Originally posted by: mooncancook
Ok I ran 3Dmark05 last night and here's the result. Everything stock and default.
Leadtek 6600GT ........ 3264
ATI X800XL ............... 4674
Summary: Basically a 50% more in cost for a 40% gain in performance, which is really good. It's not quite 1:1 but it's close enough for me to justify. only if X800XL would' came out couple weeks earlier then i wouldn't have to sell my 6600GT at a loss...
The stock X800XL turbine fan is not loud, but still too noisy for me, so I took the Zalman VF700 from my 6600GT and installed it on X800. Now it is whisper quiet
X800XL really shines with AA/AF or at higher resolutions, where the 6600GT doesn't have the fillrate or RAM to complete. Here are some Techreport HL2 benchmarks:
10x7 - X800XL approximately 25% faster
12x10 - X800XL approximately 57% faster
16x12 - X800XL approximately 64 % faster
add some AA/AF, and the differences become larger
10x7 4XAA/8XAF - X800XL approximately 54% faster
12x10 4XAA/8XAF - X800XL approximately 78% faster
16x12 4XAA/8XAF - X800XL approximately 109 % faster
So yeah, I'd say that performance gap is worth the 50% price premium