Nvidia has one last graphics card to introduce before rounding off the Geforce 600 series. This graphics card is GTX 650 Ti, which has now been detailed and looks better than expected.
The first rumors of GTX 650 Ti spoke of a seriously crippled version of GK106 that is used in GTX 660. While this is still true in a way the graphics card will get four SMX clusters instead of three, which means in total 768 CUDA cores at 925 MHz and 64 texture units.
| Model | GTX 650 | GTX 650 Ti | GTX 660 | GTX 660 Ti | GTX 670 |
| Circuit | GK107 | GK106 | GK104 | ||
| Node | 28 nanometer | ||||
| CUDA cores | 384 | 768 | 960 | 1 344 | 1 344 |
| SMX units | 2 | 4 | 5 | 7 | 7 |
| GPC clusters | 1 | 2 | 3 | 4 | |
| Clock frequency | 1 058 MHz | 925 MHz | 980 MHz | 915 MHz | 915 MHz |
| GPU Boost | – | – | 1 033 MHz | 980 MHz | 980 MHz |
| FLOPS Single precision |
813 GFLOPS | 1 421 GFLOPS | 1 882 – 1 983 GFLOPS | 2 460 – 2 634 GFLOPS | 2 460 – 2 634 GLFOPS |
| FLOPS double precision (1/24) |
33.8 GFLOPS | 59.2 GFLOPS | 78.4 – 82.6 GFLOPS | 102.5 – 109.8 GFLOPS | 102.5 – 109.8 GFLOPS |
| Texture units | 32 | 64 | 80 | 112 | 112 |
| ROPs | 16 | 16 | 24 | 24 | 32 |
| Memory bus | 128-bit | 128-bit | 192-bit | 192-bit | 256-bit |
| Memory buffer | Up to 2 GB GDDR5 | 1 GB GDDR5 (tup to 2 GB?) | 2 GB GDDR5 | 2 GB GDDR5 | 2 GB GDDR5 |
| Memory frequency | 1 250 MHz (5 000 MHz effectively) |
1 350 MHz (5 400 MHz effectively) | 1 502 MHz (6 008 MHz effectively) | ||
| Memory bandwidth | 80 GB/s | 86,4 GB/s | 144 GB/s | 144 GB/s | 192 GB/s |
| TDP | 64W | 110W | 140W | 150W | 170W |
| Price | $109 | ? | $229 | $299 | $399 |
Besides fewer CUDA cores than GTX 660 Ti the memory bus has been limited and stays at 128-bit instead of 192-bit. Also memory freqencies have been reduced from 6 008 to 5 400 MHz, which results in much lower bandwidths. The graphics card looks substantially better than GTX 650 and should be an interesting and affordable alternative in games with 1 920 x 1 080 pixel resolution. We expect performance to be slightly better than with AMD Radeon HD 7770.
The price of the new card is still uncertain, but should be around 149 – 179 dollar. The launch is slated for 9th October.
Source: Hermitage Akihabara
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