NVidia is a name you directly relate to video cards and has been so for quite a while. The company has been dominating the graphics market ever since 3Dfx expired but during the latest months nVidia has shown up more and more in another context. The nVidia’s follow-up of the promising nForce-chip has proven to be very popular and we have seen the great performance of the nForce2-chip here in our test lab. Even if nVidia does not have the same influence on the motherboard market as it has on the video card market the majority of all motherboard manufacturers introduced a motherboard based on the nForce2-chip.

NVidia is a name
you directly relate to video cards and has been so for quite a while. The
company has been dominating the video market ever since 3Dfx expired but
during the latest months nVidia has shown up more and more in another context.
The nVidia’s follow-up of the promising nForce-chip has proven to be very
popular and we have seen the great performance of the nForce2-chip here in
our test lab. Even if nVidia does not have the same influence on the motherboard
market as it has on the video card market the majority of all motherboard
manufacturers introduced a motherboard based on the nForce2-chip.
The first of it’s kind we looked closer at was a card from Chaintech which
we were very pleased with. Now it is time again and this time around it’s
a board from a very well known manufacturer: EPoX.

Since many years
EPoX has been a sparring partner for among others ABIT on the enthusiast market
and the company’s products have not seldom been very appreciated.
And this time it’s an AMD-motherboard based on nVidia’s nForce2-chip. EPoX
8RDA+ is the name of the motherboard and it will be very interesting to se
how well of a fight it can put up against Chaintech 7NJS Zenith. Before we
look closer at Epox 8RDA+ we will make a quick briefing of nVidia’s powerful
nForce2 APU (Audio Processing Unit), which was not used on the card from Chaintech.

Nvidia introduced
it’s powerful APU (Audio Processing Unit) already during the introduction
of the gaming console Xbox. The two nForce chipset which followed after this
introduction have used just about the same APU and it still performs outstandingly.
The audio processor in the nForce2 chipset which is placed in the south bridge
(MCP-T) of the chipset is for example the only sound circuit on the market
which offers realtime encoding of the Dolby Digital-format. That the whole
APU fits in the already well filled south bridge does not make it less impressive.

Block diagram over the nForce2 APU

One word which
is often connected to the nForce chipsets is SoundStorm, which however is
a bit of a woolly concept. SoundStorm is simply nVidia’s specifications that
motherboards should fulfill to fully support the powerful features of the
audio processor. In these specifications everything from analog to digital
sound outputs are included to in the best possible way make use of, among
other things, the Dolby Digital-support.
Unfortunately EPoX 8RDA+ doesn’t offer all these sound outputs in it’s original
version, but it is possible to order a panel for digital sound output (SPDIF)
to get a clean digital source to for example a home video receiver.
Since the nForce2 APU only handles the digital sound source, an external DAC-encoder
(Digital-to-Analog Converter) is required to get an analog sound from the
motherboard. It’s up to the motherboard manufacturers themselves to choose
DAC-circuit and unfortunately most DAC-circuits that are being used on the
nForce2 boards today are clearly inferior to the nForce2 APU which makes a
small bottleneck for the analog sound. For most people though the sound quality
is more than enough even with these circuits.

: Specifications

chip :
XP Socket-462, 200/266/333MHz FSB
200/266/333/DDR400MHz DDR
6 x 32-bit bus master PCI
units, ATA 100/66/33
RTL8201BL 10/100Mbit (nForce2 LAN)
circuit :
ALC650 Controller (nForce2 APU)
ports in I/O panel (NVIDIA MCP-T)

Aswe can see
in the specifications EPoX 8RDA+ isn’t the best equipped motherboard on the
market. The card does neither have a usual ATA133 RAID-controller nor a SATA-controller
as we for example saw on the Chaintech 7NJS Zenith. However the nForce2 chipset
offers many interesting features which the motherboard manufacturers very
easily could make use of. Before we go on with more information about the
card’s accessories and features we will look closer at the price for EPoX

and Accessibility

EPoX has for
a long time been a great actor on the enthusiast market and has also acquired
a big network of retailers. The accessibility isn’t a problem for EPoX and
that goes for 8RDA+ too. We have heard from EPoX that the motherboard has
sold very well and that the stocks are even empty from time to time but luckily
that hasn’t been any greater problem.
Concerning the price EPoX 8RDA+ has been very well placed and for the moment
the card has a price of about $100 which clearly is competitive. If you can
manage without 6-channel sound, LAN and firewire the cheaper 8RDA-model fits
the bill. But this model only costs about $10 less than 8RDA+ so we see no
point in not buying EPoX 8RDA+ if you’ve decided to buy an nForce2 board from
$100 is a very good price for EPoX 8RDA+ but it is possible to get a nForce2
motherboard for about $80 so it’s not the cheapest one out there.

compare the price to equal products and even the accessibility among retailers.

We begin with
the accessories EPoX sends with the motherboard.

EPoX 8RDA+: Accessories

ATA133-cable, one Floppy cable
manual for the motherboard
CD-rom with device drivers and programs
with two USB2.0-ports
Panel with two FireWire-ports (IEEE-1394)
Panel with gaming port
sheet, manual for Magic Flash and USDM

You don’t get
any impressive amount of accessories with the motherboard but it’s far better
than other packages we’ve seen. Compared to Chaintech 7NJS Zenith, EPoX unfortunately
doesn’t have very much to offer on this aspect but at least we get the most
important accessories with the board. Despite the fact that the board actually
has four USB2.0-ports in the I/O-panel EPoX sends an extra panel with two
USB2.0-ports and also a panel which houses two firewire-ports.

Game port, USB2.0, Firewire.

The included
manual is well made and goes through the physical parts of the motherboard
but also the installation of programs and device drivers. The included CD
contains a multiple number of device drivers and programs. Magic Flash and
USDM (Unified System Diagnostic Manager) are two small programs which comes
with the motherboard. Magic Flash automatically seeks through the EPoX BIOS-server
after the right bios version and then it’s very easy to flash the bios step
by step. USDM is a monitoring program for temperature, voltage and speed of
the fan’s rpm and so on.
There is even two fullversion programs on the disc: Norton Ghost 7 och PC-cillin
2002, at least Norton Ghost is a very usable backup-program.


EPoX 8RDA+ is
as we mentioned earlier not the most feature filled motherboard on the market
but the nForce2 MCP-T (the south bridge) has support for a great variety of
things. EPoX hasn’t used the support for double Ethernet-controllers but at
least one of them has been paired together with a network PHY chip from Realtek.
What is also very interesting with the nForce2 south bridge is it’s generation
of heat. During regular usage the south bridge gets very warm and it is almost
as if it stings a bit if you hold your finger for a while on the chip. There
doesn’t seem to be any problems with stability but it is actually so bad that
even the south bridge could benefith from a heatsink, at least a passive one.

nVidia nForce2 MCP-T

Realtek RTL8201BL 10/100Mbit

MCP-T also has
support for firewire which EPoX also has used with a circuit from Realtek.
The circuit offers two firewire-ports which are connected to the included
panel. EPoX 8RDA+ is even equipped with what we would call an underestimated
feature, trouble-shooting LED. It’s about a two digit display which shows
different number and letter combinations during the booting process. If there
is anything wrong it is easier to find what the problem is with the help of
the combination. We saw an external model of this on the CBox2-unit which
was sent with Chaintech 7NJS Zenith. Even if this is a feature which might
not be used very often it can be very useful when problems actually arise.

Realtek RTL8801B PHY (FireWire)

trouble-shooting LED

Even if EPoX
8RDA+ might not impress with a lot features we think that what is offered
clearly is good enough. The accessories you get with the card are more or
less what is needed to use the card, device drivers and several small programs.
To lighten up the software package you also get two full version titles which
are more or less useful. The included panels gives the user access to both
extra USB2.0 and firewire ports which is very good considering that these
two interfaces are only getting more and more popular.

If we look at the integrated features the card offers the powerful sound processor
is the one to extinguish itself. The nForce2 APU is one of the most powerful
on the market, but the sound codec which is used from Realtek could prove
to be a bit of a bottleneck. This combination however is quite usual on today’s
nForce2 motherboards (nForce2 APU + Realtek ALC650).
As we said earlier EPoX 8RDA+ does not use the support for both Ethernet controllers
that exists in the nForce2 MCP-T. But most users manage without two Ethernet-controllers
and then the lone Realtek-controller is good enough. The integrated trouble-shooting
LED is a small bonus which we hope to become standard on motherboards within
a close future.

The biggest disadvantage with EPoX 8RDA+ if we look at features is the small
number of IDE-channels which the motherboard offers. As the card is neither
equipped with any ATA133 RAID-controller nor SATA-controller you can only
use four IDE-units before you have to purchase external controller cards.
Today it isn’t unusual to have more than one harddrive, CDRW and DVD-rom which
quickly makes use of all theses IDE-units.
Other than that, there are no direct flaws we can find, but there had been
room for a "Deluxe-model" in EPoX’s sortiment to push in some more
accessories and features.

look at the amount and usefulness for included accessories and integrated

is one of the few manufacturers who still stick to the old classical scheme
of colors which once was used by most manufacturers. Even if I personally
think that the colors are a bit boring, that won’t be anything that effects
the outcome of this review. After all, it’s just a matter of taste. 😉

A very positive
aspect of the EPoX 8RDA+ is the big space around the socket. This is never
a problem on Intel-systems as Intel’s special attachment device are included
in their chipset specifications and in that way is used by all manufactured
motherboards. On AMD-systems it is however worse since the manufacturers themselves
control the design of the motherboard. On EPoX 8RDA+ there is a lot of free
space around the base which enables the user to install really big heatsinks
like for example Alpha PAL8045. On a motherboard which directs itself towards
the enthusiast market this is a very important detail which EPoX hasn’t missed.
The chipset cooler on the motherboard is of a bit unusual design and of a
passive kind which unfortunately proved to have a multiple number of flaws.

We made some
quick tests with EPoX 8RDA+ when it showed up in the test lab and especially
during our overclocking tests the passive chipset cooler proved to become
very hot. After only a couple of minutes mild usage at high FSB-speeds (190MHz+)
the cooler became really warm. Even during original clock-frequencies the
cooler got very hot which shows that the nForce2 SPP chip generates quite
a lot of heat.
After we discovered this we determined to take a closer look at the cooler.
And it wasn’t a pretty sight that met our eyes as we dismounted the chipset
cooler. EPoX does not use thermal paste to transfer the heat to the heatsink,
but instead double stitched TIM (Thermal Insulating Material). Honestly speaking
we got surprised over the fact that any heat at all could be conducted with
such a bad contact surface. We cleaned the chip and the cooler with some alcohol
and applied some thermal paste instead. This is actually something we recommend
all owners of EPoX 8RDA+ to do, especially if you’re planning on running high
FSB-speeds. Then it might even be best to change the whole cooler to a more
efficient one.

we see that EPoX hasn’t found any optimal localization for the ATX contact
which forces the ATX cable to be pulled around the processor cooler in the
case. This can both stop the air flow and be in the way of other things in
the case. The motherboard has three memory slots which together give support
for up to 3GB DDR400-memory. Memory slot three (furthest away from the CPU
socket) has it’s own memory controller while memory slot one and two share
a controller. For DualDDR to be activated there must always be a memory module
installed in dimm slot three.

On several motherboards, we have seen the memory slots being placed way to
closely to the AGP-port which has made the changing of memory very difficult
when a long AGP-card is installed. Unfortunately we have to admit that EPoX
8RDA+ is the worst motherboard in this aspect we have ever seen. When we installed
our video card on the motherboard it was almost as if the attachment hooks
scratched the back of the card. Our test system uses an Albatron Ti4200 video
card which is one of the longer ones in it’s class (almost the same size as
Ti4600) so users with shorter cards might make it without problems.
We have actually heard reports of users who during the installation of their
Ti4600 video card scratched of a circuit which then killed the card. This
is of course unacceptable and everyone who have a long AGP card should be
very careful during installation. And with the video card installed it is
impossible to change memory module if you do not physically bend the video
card which we, of obvious reasons, do not recommend. This is big mistake by
EPoX and we hope that this is only an isolated phenomenon.

On the I/O-panel
we see four USB2.0-ports, RJ45-contakt (LAN) and the other connections we
are used to. Unfortunately EPoX offers no digital sound output which makes
it impossible to use the Dolby Digital support for the card. Even if the motherboard
didn’t have to be equipped with more sound connections we had been glad to
se a possibility for this with, for example, external cables/panels. The motherboard
is equipped with six PCI-slots which is the maximum we’ve se on motherboards
these days, so there is nothing to complain about in that aspect. The IDE-connections,
trouble-shooting LED and CMOS-jumper are a few of the things we find on the
lower side of the motherboard.

EPoX 8RDA+ does
not have especially many drawbacks considering layout and design. The problem
is that there is at least one big disadvantage. We are of course speaking
of the problem caused by the lack of space for AGP and memory. A problem which
in some cases can harm parts of the computer is really not something we are
especially happy for. The positive is however that it doesn’t effect all systems
as the card that seems to take the worst beating is the nVidia GeForce4 Ti4600.
So all owners of Ti4600 should be very careful while installing their video
cards on EPoX 8RDA+.
Another smaller disadvantage is the weak chipset cooler. For those who use
the motherboard at it’s default speeds there shouldn’t be any greater problem
but since the card is directed to the enthusiast market we had expected a
better solution. We recommend that you at least equip the cooler with a small
fan if you consider using high FSB-speeds. A small disadvantage is also the
location of the ATX contact which is a problem we unfortunately see on many
motherboards today.
The positive aspects of the board is the large space around the socket, the
six PCI-slots and the four USB2.0-ports directly on the motherboard.

have considered the physical but also the esthetical aspects of the card’s
design. User-friendliness is also an important factor.

EPoX 8RDA+ is
equipped with a Phoenix-based BIOS and as usually EPoX has been good at implementing
many settings in the BIOS to satisfy the most demanding users.
Advanced chipset features is the menu most often used as it is the one with
the most interesting settings. Here you have the possibility to set everything
from FSB speed to AGP frequency. The nForce2 chipset has very generous memory
settings which enables you to optimize the system very well no matter how
good the quality of the memory is. What’s in the integrated features menu
isn’t very hard to understand. Here you have the possibility to disable and
activate the integrated features on the motherboard and make some general
settings for the system.

Phoenix BIOS

Advanced Chipset Features

Integrated features

PC Health is
the built-in monitoring software which keeps an eye on temperature, voltage
and rpm of the system fans. There is also the possibility to get this information
shown during boot sequence which can be a good assistance. Power Bios is the
menu which together with Advanced chipset features stand for the overclocking
possibilities of the motherboard. In power bios you handle the voltage to
CPU, AGP and memory which we will look closer at soon.

PC Health

Power BIOS

EPoX has for
as long as I can remember been one of the manufacturers who encourage overclocking,
perhaps not officially but without a doubt if you look at how their products
are designed. EPoX 8RDA+ is really no exception and there are many overclocking
possibilities on this motherboard which we will show later on.

Unlike Chaintech 7NJS Zenith which didn’t offer higher FSB speeds than 200MHz,
EPoX doesn’t reach it’s limit until 250MHz (1MHz intervals). That was not
the case when the board was released, but in later bios versions 250MHz FSB
is enabled. The bios version which we had on our test example had support
for 250MHz FSB from the start. This will be enough for the most demanding
overclockers and to get close to these high FSB frequency’s you without a
doubt will have to modify the card physically. EPoX 8RDA+ offers just like
Chaintech 7NJS Zenith a great number of settings for adjusting the memory
speed (the picture doesn’t show it but it’s also possible to lower the memory
speed by 50 %). For those who use the nForce2 chipsets DualDDR support the
100% setting is the only thing that will do, asynchronous speeds only give
worse performance.

Power bios also
gives the user the opportunity to change the voltage for parts of the motherboard,
which is very important for serious overclocking. We have gathered the settings
here in a chart below.

1.40v – 2.20v (0.025V intervals)
2.63v, 2.77v, 2.90v
– 1.8v (0.1V intervals)

The CPU-voltage
is increasable to 2.2v which is very good and actually a tiny bit higher than
what Chaintech 7NJS Zenith allows (2.15v). DIMM and the AGP voltage is a small
disappointment however if we compare with Chaintech 7NJS Zenith. The DIMM
voltage can "only" be increased to 2.9v and unfortunately not in
0.1v intervals either (Chaintech, maximum 3.2v). Even the AGP-voltage is a
bit lower than what Chaintech allowed but that’s not quite an equally big
loss. Not EPoX nor Chaintech allow changes of the voltage to the chip which
we can understand, considering the already large generation of heat. But higher
chipset voltage seems to be the key to high FSB frequency’s on the nForce2
EPoX 8RDA+ has a good bios with a lot of nice settings. There are no revolutionizing
settings but we can’t really think of anything that’s missing. The possibilities
to overclock are very good, but unfortunately there is also a setback here.
The voltage settings for DIMM and AGP are not as impressive as on the card
from Chaintech, which we think is too bad. Perhaps this only effects the serious
overclockers, but still it is worth mentioning.

look at the design of BIOS and it’s settings, both for regular use and

Athlon XP 2100+ (266MHz)
x 256MB Corsair TWINX3200
Athlon XP 2100+ (266MHz)
KT400 Dragon Ultra
x 256MB Corsair TWINX3200
hardware which was used in all testing systems
GeForce 4 Ti4200 128MB @ 270/570MHz
XP Professional SP1
drivers :
DirectX 8.1
NVIDIA nForce2 v2.00
VIA Hyperion 4in1 v4.45
programs :
3:Arena v1.32
Unreal Tournament 2003 demo v.1080
3Dmark2001 SE 330
Comanche 4

Winace v2.20
Audioactive Production Studio 2.04j (Fraunhofer II encoder)
SiSoft Sandra 2003

We have made
some changes in the test system since the review of Chaintech 7NJS Zenith
and therefore we do not use the results from that board in the tests. Even
if we did some changes in our test programs too, our order of operation remains
the same. Before the performance tests in this review we experimented a bit
extra with memory timing and especially tested some with 4-2-2-2 settings
instead of the usual 5-2-2-2. However we couldn’t see any direct differences
between the two settings so in this review we have also used 5-2-2-2-timings
on both the nForce2 and the KT400 board.
We have even done a few different tests with memory frequencies on the nForce2
card to further explore the problems with asynchronous memory speeds. First
of all we have run the tests in the recommended setting where the memory bus
is synchronized with the FSB. We have used this setting both with single channel
(SC) and double channel DDR (DR). We have also tested the system with asynchronous
bus speeds on CPU and memory. This setting was made in DDR400-speed which
can be seen below.

FSB, 2 x DDR266
FSB, 1 x DDR266
FSB, 1 x DDR400

tests on the KT400-motherboard have all been done with DDR333 memory speeds
and 5-2-2-2-timings.
Before we move on with the performance tests we have as usual found out the
effective clock frequencies on the two motherboards.

KT400 Dragon Ultra has a minimal advantage compared to EPoX 8RDA+ but that’s
nothing that will effect the results of the tests.

our earlier motherboard reviews we have used both SiSoft Sandra and Cachemem
but after the big problems we’ve had with Cachemem we have decided only to
use SiSoft Sandra. To give a better picture of the memory bandwidth of the
motherboard we have instead used two memory tests in SiSoft Sandra. The two
tests are Buffered Memory Bandwidth and Unbuffered Memory Bandwidth
and here below a short explanation follows about what the difference
between the two is.

Buffered memory benchmark is the test which is default in SiSoft Sandra 2003
and includes different instruction optimizations and depends more or less
only on the memory frequency. The frame below has in default mode all the
squares filled in, but if you uncheck the squares as shown below the test
is free from all SSE/SSE2-optimizations etc. so even the timing of the memory
does a lot for the performance. This is called ’unbuffered’ and is a better
indication of the real performance of the system.

start with the Buffered Memory Bandwidth test.

we see that Soyo KT400 Dragon Ultra actually draws the longest straw, even
if it only wins by the least possible margin. According to the memory bandwidth
EPoX 8RDA+ doesn’t have any bigger problems with asynchronous speeds in SC-mode
while the memory bandwidth in the DDR400-system is marginally better than
on the DDR266-system. Despite it’s massive memory bandwidth the Dual DDR-system
can not take the lead in this test and the reason is simply the processor
bus which is a real bottleneck for the system. Let’s continue with the
Unbuffered Memory Bandwidth.

we see an interesting turning point for the EPoX card which delivers impressive
bandwidth even compared to the well performing KT400 card from Soyo. Only
the SC DDR266-system can get past Soyo KT400 Dragon Ultra in this test and
the SC DDR400-system still tags along very well.

compression is one of the more usual jobs the computer gets to carry out and
it is a very memory demanding application.

it’s not only about memory bandwidth but also much about latency. The problems
with asynchronous bus speeds between memory and processor has often been related
to latency problems which our tests strengthen. Apart from the fact that EPoX
8RDA+ with DualDDR266 is equal to Soyo KT400, we see that the SC DDR400-system
for the first time gets behind the SC DDR266-system despite it’s massive overweight
in memory bandwidth.

Production Studio v2.04j – MP3 encoding (Fraunhofer II codec)

have switched our testing program for MP3-encodning and now use Audioactive
Production Studio which is based on the Fraunhofer II-codec, a very demanding
codec which after all gives a good result.

is in a very large extent depending on the CPU which we clearly see in the
results. In spite of the fact that the tests went on for almost five minutes
not even a second differs between the different configurations.

has also been a change in our game tests and that is the elimination of Jedi
Knight 2 that isn’t included among the tests. Since JK2 and Quake3 use the
same graphics engine the differences between the systems get more or less
unimportant, only the numbers differ.

8RDA+ with DualDDR266 takes the lead in the two gaming tests but the differences
are not big. Here we once again see that the SC DDR400-system has big problems
with the SC DDR266-system in spite of the big advantage in memory bandwidth.

demos – Comanche 4, 3Dmark2001 SE 330

pattern is the same as in the earlier tests except for the fact that Soyo
KT400 Dragon Ultra seems to have grasped the longest straw. We can only give
VIA credit for their superb job with the new 4in1 device drivers, Hyperion
v4.45. Without these device drivers Soyo KT400 Dragon Ultra would probably
do far worse in the 3D-tests. The nForce2 chipset has obviously great potential
and we believe that there is even more performance to collect from this chipset.
Before we end our performance tests we would like to take a closer look at
the more advanced 3D-tests in SPECViewperf 7.0.

in this review we have used some more advanced tests to get a good overview
of different workstation applications and we have used SPECviewperf 7.0
which we think fulfills the purpose perfectly. SPECviewperf 7.0 is a testing
application which contains six 3D-renderers from six different programs
on the market today. The six tests/programs are the following:

  • These
    tests are run in window and could therefore be effected by the desktop’s
    resolution. During our tests we used a solution of 1280x1024x32bits and
    an update frequency of 85Hz.

    believe that nVidia has some work ahead of itself when it comes to gaming
    and office performance, but when we look at advanced 3D-performance there
    is only one king. The SPECviewperf tests show that NVIDIA has succeeded
    very well in optimizing the workstation performance on nForce2. Soyo KT400
    Dragon Ultra is in spite of the well developed 4in1 device drivers clearly
    beaten and in some tests it can’t even win against the nForce2 card with
    SC DDR266. SPECviewperf is also the only "realistic" test which
    gives an big advantage to the DDR400-system in spite of the asynchronous
    speeds. We can also say that we tested the system with DualDDR400 which
    gave worse results than DualDDR266 in most of the tests.

    thorough performance tests we can come to many conclusions. First of all
    we look at the performance during single channel. Even if asynchronous
    bus speeds sometimes can be an advantage which our tests show, often it
    doesn’t make any larger differences. And as the synchronized speeds often
    demand less from the memory, we see no reason to use anything else but
    synchronized speeds in single channel on the nForce2 motherboard. The
    same thing goes for DualDDR but here the advantages are even greater with
    the synchronized speeds. The conclusion is that the nForce2 chipset clearly
    works best with synchronized bus speeds whether the DualDDR-support is
    used or not.
    The performance delivered by the nForce2 chipset and EPoX 8RDA+ is nothing
    but impressive at DualDDR and even if VIA manages to save it’s pride to
    some extent with their new 4in1-device driver there is no doubt about
    which manufacturer makes the best performing AMD-chip. Especially the
    unbuffered test in SiSoft Sandra 2003 and the performance in SPECviewperf
    shows the enormous potential of the nForce2-chip.
    However we believe that nVidia or the motherboard manufacturers could
    improve the performance a bit more on the nForce2 chipset but we are more
    than pleased with the present performance.

    tests show how the performance of the motherboard is compared to competitive
    products on the market.

    everyone knows theory and practice can be two very different things and
    there is another expression which also might come to mind; "You can
    talk the talk but can you walk the walk?". It has happened more than
    once that you get negatively surprised after having stared at specifications
    and numbers when reality proves to be quite different. Overclocking is
    something that often needs to be analyzed through the different BIOS settings
    which exist since the days of the "jumper" are long since past.
    This isn’t in any way wrong as most motherboards, which offer rich BIOS
    settings for optimizing of the system, can also be good overclockers.
    But it isn’t always right and since overclocking has become such a large
    phenomenon in the PC market it seems to be an important aspect today.
    And this is of course another reason for us to look closer at overclocking,
    if not only to satisfy our own curiosity. 😉

    EPoX 8RDA+ is in every aspect a motherboard for enthusiasts and already
    when we looked at the BIOS settings we saw that EPoX really want to give
    the users good opportunities to overclock. There is however a couple of
    things which EPoX missed in our opinion but we already wrote about that
    in the BIOS section of the review.

    To a great extent we direct ourselves, during the overclocking tests,
    to FSB-overclocking. During pure CPU overclocking you can for most of
    the time trust the settings of the BIOS for CPU voltage but it also greatly
    depends on which processor you get.
    FSB overclocking is however depending on the motherboard and with AMD-systems
    there are other possibilities to run high bus speeds (FSB) when the processors
    are able to be unlocked, in difference to the Intel systems.

    Even if we to a great extent direct ourselves to achievable FSB frequency’s
    at the overclocking tests we also have results from CPU overclocking where
    we push both the processor and the motherboard to the limit.

    However we start with the FSB overclocking and during all overclocking
    tests we have used an AthlonXP 1700+ with Thoroughbred B-stepping (JUICB
    0251). This CPU is like most T-Bred B-stepped CPU’s unlocked from the
    factory which makes FSB overclocking much easier. We have seen many different
    repports about EPoX 8RDA+ and it’s FSB overclocking which made our tests
    very interesting. It seems as if the nForce2 north bridge (SPP) varies
    greatly in quality and unfortunately we had undoubtedly gotten one of
    lesser quality.

    synchronized bus speeds between FSB and memory we managed to get the system
    stable at 192MHz FSB which isn’t very impressive if you look at other
    reports on the web. We however are far from alone not reaching the wondrous
    200MHz FSB limit. Even though many users have gotten FSB frequency’s up
    to 210MHz+ without modifications.
    During our inspection of the motherboard we saw that the north bridge
    was based on the A2 stepping which can add to the lesser overclocking
    potential as the A3 stepping is supposed to be a bit better. But probably
    there has been a great deal of bad luck rendering us unable to achieve
    higher FSB frequency’s. It’s too bad that luck makes such a big difference
    even with motherboards during overclocking, making the grades even harder
    to decide.

    With asynchronous bus speeds (Memory = 83% of FSB) we managed much better
    and could press the motherboard up to 225MHz FSB which proves that the
    north bridge clearly gets relieved when the memory opperates at a lower
    bus speed than the processor. However we can affirm that it isn’t due
    to the memory as it can manage over 230MHz on this motherboard with asynchronous

    last test we did was a full feathered overclocking test where both the
    motherboard and the processor was pushed to their limit. With the help
    of a ThermalTake Volcano 7+ and 2.125v we managed to reach quite a respectable
    overclockning even on the test system’s CPU.

    took the chance to run through some performance tests during this overclocking
    to se how much of an increase we could achieve.

    1700+ (1.46GHz) @ 2.2GHz (2.125v)
    x 256MB Corsair TWINX3200 @ DDR384 (5-2-2-2)
    4 Ti4200 128MB @ 270/570Mhz

    see a clear increase of performance and this in spite of the video card
    which in 3Dmark2001 becomes a noticible bottleneck.

    EPoX 8RDA+ isn’t unfamilar with overclocking in any way. Just as we are
    used to when it comes to EPoX’s products there are good overclocking possibilities
    and it isn’t hard to see this in our results. If we begin with the negative
    parts the nForce2’s north bridge lies behind a lot of these. First of
    all EPoX doesn’t give the user any possibility to change the chipset voltage
    which could have increased the overclocking potential a great deal. There
    are however very few nForce2 motherboard on the market at this time that
    offers this feature. The voltage for the memory is also a bit low, 2.9v
    is more than what most nForce2 motherboards offer but we would gladly
    have seen possibilities up to 3.2v as in Chaintech 7NJS Zenith’s case.
    The biggest problem otherwise is the nice but oh so inefficient chipset
    cooler which at high FSB-speeds gets very hot. An active cooler had been
    preferable and if you’re going to invest in high FSB-speeds we think that
    this is something to take care of directly.

    Except for these relatively small details there is yet great potential
    for overclocking with EPoX 8RDA+. If we begin with the FSB overclocking
    it is good enough, 192MHz was the roof we reached, but according to other
    reports on the web it seems to differ a great deal board to board, so
    higher frequency’s are probably not impossible with some luck. The problem
    with high FSB frequency’s seems to be the combination between memory bus
    and processor bus which holds back the motherboard to some extent. We
    recommend that you use synchronized speeds for optimum performance, but
    it doesn’t harm to experiment.

    During pure processor overclocking EPoX 8RDA+ is an outstanding card with
    the possibility for high voltages directly in the bios. During our final
    overclocking we increased the voltage up to 2.125v and this really was
    the limit of what is achievable when it comes to air cooling but we actually
    had no problems with high temperatures during our tests. If we had been
    limited to 1.85v as with most other motherboards the results would have
    been very different and it is a clear advantage to have such a high voltage
    for the processor, especially for those with efficient cooling.
    EPoX 8RDA+ is one of the best nForce2 motherboards for overclocking but
    there are a few flaws which can be fixed.

    the theoretical overclocking potential of the motherboard is valued
    through the use of practical tests.

    8RDA+ is the second nForce2 based motherboard we test here at Nordichardware,
    and we are impressed by nVidia and it’s work with only it’s second motherboard
    chipset in history. Our performance tests clearly show that nForce2 is
    the strongest chip on the market at the moment and then it’s other qualities
    are not even accounted for. The MCP-T on the nForce2 chipset has integrated
    support for firewire, USB 2.0, ATA133, nVidia SoundStorm and much more.
    The only thing that’s actually missing is an integrated SATA-controller,
    however at the moment there is no chipset on the market with this feature.
    The nForce2 chipset is the granted choice for AMD-systems today but as
    usual it isn’t necessary for everyone to upgrade. If you have a KT333
    or KT400 motherboard for example you’ll manage well but if it’s time to
    purchase something new we strongly recommend getting nVidia’s latest chipset
    for all AMD-users.

    If we move on with the EPoX 8RDA+ board it is as expected a motherboard
    directed to the enthusiast market. Just as EPoX usually does we must say,
    it sticks to a good price setting but this also effects some of the card’s
    features and accessories. However the nForce2-chipset has as we mentioned
    before most features integrated directly in the chipset so we see a full
    support for firewire, USB 2.0, LAN and 6 channel sound. The biggest lack
    is the ATA133 RAID-controller but also SATA-controller which is getting
    more and more useful.

    Unfortunately EPoX 8RDA+ has also had some problems with it’s motherboard
    layout and design. We are also negative to the chipset cooler which in
    itself is not especially efficient but which also has very bad contact
    with the chipset as EPoX is using a simple piece of TIM as heat conducting
    material. The biggest problem is however the problem with long AGP-cards
    and the distance between memory slots which according to some reports
    can cause physical damage to the video card. Among the positive parts
    we see that EPoX left a lot of space around the socket and the "four
    holes" which ones again shows which market the card belongs in.

    BIOS and overclocking are two words often mentioned in connection with
    one and another and even on EPoX 8RDA+ we see that these two come together.
    With several nice overclocking possibilities in the BIOS and good overclocking
    results EPoX 8RDA+ is one of the best cards for enthusiasts on the AMD
    market at the moment. However there is room for improvments even here
    and some of them we saw already on Chaintech 7NJS Zenith, higher voltage
    settings for the memory.

    We have already mentioned the performance and even though we couldn’t
    EPoX 8RDA+ with Chaintech 7NJS Zenith we see that the nForce2 motherboards
    show an even and very strong performance in all applications.

    EPoX 8RDA+ is a very qualified motherboard which to a great extent is
    directed towards the more demanding users. The card isn’t full of features
    and accessories but very good performance, high potential for overclocking
    and the low price contributes greatly to the ability to compete.


    + Outstanding performance
    + Good price
    + Very nice potential to overclock
    + Many bios settings

    – Some mistakes in design and layout
    – Only support for four IDE-units
    – No SATA-controller

    mark :


    final words we would like to say that soon there will be more nForce2
    motherboards here on Nordichardware but which ones the future will reveal…

    to EPoX
    for making this review possible!