Due to severe yield issues with the GF100 chip at launch, NVIDIA have only released a 480 SP version at most, which, as we know, is present as the GeForce GTX 480. The GTX 480 features 15 of the 16 SMs enabled. A fully enabled GF100, with 512 SP, has been rumoured ever since.

Expreview have gotten hold of a fully enabled GF100 card, and performed some benchmarks on it. The 512 SP GF100 is clocked identically to the GTX 480 – 700/1400 MHz for Core/Shaders respectively, and 924 MHz GDDR5. The only change is a 6.25% increase in Shaders and TMUs. As one would expect, the performance increases are only minor, with an average boost of 5%-6%.

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Due to severe yield issues with the GF100 chip at launch, NVIDIA have only released a 480 SP version at most, which, as we know, is present as the GeForce GTX 480. The GTX 480 features 15 of the 16 SMs enabled. A fully enabled GF100, with 512 SP, has been rumoured ever since.

Expreview have got hold of a fully enabled GF100 card, and performed some benchmarks on it. The 512 SP GF100 is clocked identically to the GTX 480 – 700/1400 MHz for Core/Shaders respectively, and 924 MHz GDDR5. The only change is a 6.25% increase in Shaders and TMUs. As one would expect, the performance increases are only minor, with an average boost of 5%-6%.

The 512 SP GF100 scores 10072 in 3DMark Vantage Extreme preset, a 5.8% increase over 9521 for the 480 SP GTX 480. As expected, the extra TMUs also boost the pixel fillrate. Similar boosts are indicated in Crysis Warhead, where the 512 SP card runs at 34.72 fps, with the GTX 480 at 32.96 fps.

Expreview has also attached GPU-Z caps of the 512 SP version. The Revision has been blurred. Most other details remain the same as the GTX 480, including the Pixel Fillrate, which should be more on the 512 SP version. This could simply be attributed to a GPU-Z error.

When, or if at all, the 512 SP card will release remains to be seen. Certainly, it is likely NVIDIA will be looking at a dual-GPU GF104 as the next performance flagship, rather than a souped up GF100 variant.

Reference: Expreview