1 nvidia shader = 2.384 ati shaders

Did some crazy maths: Assuming the 4850 is 95% the performance of the 9800gtx+ and the 4870 1gb is also 95% the performance of the GTX 260 216 (a good approximation i reckon) then running at the same clock speeds the relative shader performance looks something like this:

9800GTX+ vs. 4850


9800GTX+

128 shaders x 1836 shader clock = performance index 100

4850

800 shaders x 625 shader clock = performance index 95

(Normalised 800 x 1.05 = 840 = performance index 100)

Nvidia shader clock speed divided by ATI shader clock speed: 1836 / 625 = 2.9376

840 shaders / 2.9376 shader speed disparity = 285.9478

285.9478 ATI shaders @ Nvidia 9800GTX+ speeds / 128 Nvidia 9800GTX+ shaders = 2.240

1 Nvidia G92 shader = 2.240 ATI rv770pro shaders running at same clock speeds.
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GTX 260 216 vs. 4870 1gb


GTX 260 216

216 shaders x 1242 shader clock = performance index 100

4870 1gb

800 shaders x 750 shader clock = performance index 95

(Normalised 800 x 1.05 = 840 = performance index 100)

Nvidia shader clock speed divided by ATI shader clock speed: 1242 / 750 = 1.656

840 shaders / 1.656 shader speed disparity = 507.2464

507.2464 ATI shaders @ Nvidia GTX 260 216 speeds / 216 Nvidia GTX 260 216 shaders = 2.3484

1 Nvidia GT200 shader = 2.3484 ATI rv770xt shaders
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This maths is pretty ugly and assumes and ignores alot. But what the hell.

well yeah there is that. But over at guru3d they say 5 ati shaders for 1 nvidia shader. They admit its a crap description but i wanted to try and work it our for myself. Seems with gt200 alot of the die is taken up with interconnects and control logic, at least from the die shots.

lol i OWN a 4870 dude and i love the little thing, but pretty sure the 180 drivers have tipped g92 and gt200 over the edge. Pls show me a recnt benchmark saying otherwise. The amd cards being 95% as fast is very fair. Yes its very much a "lets say" situation with my maths lol. Dont get me wrong i would rather have a 1gb 4870 over a gtx260 216 or a 4850 over a 9800gtx+, the 4850 vs. 9800gtx+ choice being the most clear cut out of the two.

http://www.bit-tech.net/hardware/g [...] 0-x2-2gb/4

good review, shows that most of the time the 4870 does come out on top at high res with AA, and when the nvidia wins its about 3% over the ATI (other than Nvdia based games )

well no argument agianst u, u kno that. just that there won't be that many benchmarks on the 4850 vs 9800 GTX directly unless there is a revamp, new cooler, new card inthe same category etc. Unless some1 does a Driver comparison or if they are behind the rest of the sites.