The days until Nvidia Refresh the GT200 called GT200b incentives can be counted. Sometime in September or even August, Nvidia the start signal. Except for the general info, 240 shader units, 80 TMUs, 32 ROPs, 512-bit memory interface, etc. However, nothing more known and even less secure. Even the name - GTX 280 + GTX and 290 are in the discussion - is still a secret clock frequencies would grow.
The latter, we have about detours recently tried to find out. We are on some interesting details gestoßen: The top version of the GT200b is supposed to just under 1200 Gflops shader performance on the balance lay the shader ratio of 2.15 to 2.5 restored. In addition, the chip again as more transistors GT200. This, however, seem merely to serve the internal clock frequencies höherzusetzen, especially the shader clock, and otherwise no other new feature in the chip here.
The additional transistors would also fine with recent rumours cover the chip have 470 mm ², which was as something hochgegriffen was because with a good shrink around 420-440 mm ² possible.
Where we consider that both G80/G92/GT200 chip clock frequency usually in the 27 MHz steps through the shader performance just below 1200 Gflops, and the shader ratio of 2.5 is again, it seems a clock frequency of 656 / 1640 MHz a very realistic option. This combination would be the 27 MHz steps of the Chiptaktes comply with the ratio figures Shader 2.5 and Shader performance with the 1180 Gflops nearly 1200 Gflops.
And at this point, nor to construct thermal this: once comparing 9800 GTX (65 nm) and GTX + (55 nm) or its power under load, it can calculate that same stroke the 55-nm variant about 8 percent genügsamer works. The chip cycle at the possible GT200b would be 9 percent higher, the shader clock 26 percent. The TDP would also compared to the current 236 watts very likely again last.
Whether we ultimately zusammengeschusterten information in accordance with the facts, it must still out. We can at this point is difficult to estimate how reliable the re anonymous sources. Possible and at the same time, they are realistic too.
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