the windows index score is a really bad benchmarking... anyone that knows anything completely ignores it.
Oh the graphics benchmark for example tests stuff like texture load, alu performance and whatnot, so not much worse than other synthetic benchmarks (which is to say still completely useless? oh well), you only have to look at the actual numbers and not the index windows produces in the end:
> Assessing DirectX Constant Buffer Performance
> Run Time 00:00:05.71
> Direct3D Batch Performance 1186.29 F/s
> Direct3D Alpha Blend Performance 1178.66 F/s
> Direct3D ALU Performance 544.77 F/s
> Direct3D Texture Load Performance 511.54 F/s
> Direct3D Batch Performance 1162.80 F/s
> Direct3D Alpha Blend Performance 1153.31 F/s
> Direct3D ALU Performance 493.33 F/s
> Direct3D Texture Load Performance 509.93 F/s
> Direct3D Geometry Performance 984.12 F/s
> Direct3D Geometry Performance 1795.86 F/s
> Direct3D Constant Buffer Performance 812.67 F/s
> Total Run Time 00:01:19.92
Actually quite fun to play around with what the tool actually can measure, imho the real problem isn't that it's worse/better/whatever than other synthetic benchmarks, but that it's as useful as any other synthetic benchmark out there. So my alu performance is 544.77 F/s? That's great I assume.. if I'd only had any idea how that influences a real game :/
PS: My 4870 gets a 7.4 so I'd assume that a 7.7+ is feasible.