Following rumours of the upcoming GTX 460 being a 336 SP part, the odd core count sparked some discussion about the nature of the GTX 460. As we suspected earlier, GF104 is indeed a reworked GF100, rather than a direct derivative. It feature 16 SMs, just liked the GF100. However, each SM consists of 24 SP, rather than 32 for the GF100. This means, the top GF104 part is a 384 SP, 256-bit product. Long rumoured to be “half of GF100″ or 256 SP, this puts it much closer to the GF100. In fact, both GF100 and GF104 are now expected to compete in the same segment.

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Following rumours of the upcoming GTX 460 being a 336 SP part, the odd
core count sparked some discussion about the nature of the GTX 460. As we
suspected earlier
, GF104 is indeed a reworked GF100, rather than a
direct derivative. It feature 16 SMs, just liked the GF100. However,
each SM consists of 24 SP, rather than 32 for the GF100. This means, the
top GF104 part is a 384 SP, 256-bit product. Long rumoured to be “half
of GF100″ or 256 SP, this puts it much closer to the GF100. In fact,
both GF100 and GF104 are now expected to compete in the same segment.

The first GF104 product, the GTX 460, will be crippled to 336 SP (2 SM disabled) and 192-bit. It will be priced around $230, with a TDP of under 150W. It is a direct attack at ATI’s HD 5830 – which is clearly the weak link in the ATI cannon. There’s a good chance it will outperform the HD 5830, and ATI will have to take action. We could finally see HD 5850 dropping back to its original MSRP – $259.

The second is the 455 product, which Fudzilla are now reporting would be GTS 455. While earlier rumoured to be GF106, it might just be a further crippled GF104. The GTS 455 is expected to take on the HD 5770.

Finally, a fully enabled GF104 might be released at some point as the GTX 475 – though we are not sure how close a 384 SP / 256-bit product could get to a 448 SP / 320-bit GTX 470, unless it can be clocked above 750 MHz. Certainly, we can expect a full GF104 to offer a better power/performance/price ratio.

One might suggest that GF104 is the GF100 that should have been released back in 2009. Realizing GF100′s weaknesses, Nvidia is wisely following ATI. It is a balance between power consumption and performance, as well as the possibility of a dual-GPU product. However, it is too early to determine if GF104 is a true Cypress killer. Even if it is, it will be releasing three quarters late, with ATI preparing Southern Islands.

Reference: Fudzilla