Since getting my asus 4850 I have logged a handful of benches under different settings in Crysis and thought I might as well post them here and share the list. Yes I know there are tons of review sites with crysis+4850 benchmarks, but another couldn't hurt 
***XP PRO x32***
------------XP DX9 - High (stock) - 8.6 hotfix
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 45.36
------------XP DX9 - "Very High" (stock) - 8.6 hotfix
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 31.20
------------XP DX9 - "Very High" (690/1133) - 8.6 hotfix
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 34.33
***VISTA x64 8.6 driver***
------------VISTA DX10 - High (stock) - 8.6 hotfix
DX10 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 43.75
------------VISTA DX10 - Very High (stock) - 8.6 hotfix
DX10 1280x1024 AA=No AA, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 26.84
------------VISTA DX10 - Very High 2xAA (stock) - 8.6 hotfix
DX10 1280x1024 AA=2x, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 22.65
***VISTA x64 8.7 driver***
------------VISTA DX9 - High (Stock) - 8.7
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 45.13
------------VISTA DX9 - High (690/1138) - 8.7
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 48.66
------------VISTA DX10 - High (Stock) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 43.38
------------VISTA DX10 - High (690/1138) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 46.24
------------VISTA DX10 - Very High (Stock) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 27.3
------------VISTA DX10 - Very High (690/1138) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 29.4
NOTES:
Specs are in the sig, using Vista x64 with 32bit Crysis because Crysis64 is ~3 fps slower. This might be because I have to use the dvd for Crysis64 as there isn't a nocd patch like for Crysis32.
XP is brief as I wanted to try dx10
The overclock used was only stable after changing the profile voltage to 1158 from 1046 (couldn't even go past 665/993 @1046)
Vista stutters much more on dx10 than dx9
DX10/9 High - is smooth and playable (with more hitching in dx9).
Very High settings are playable yet not always smooth
Hitting that ~30fps average @Very High from the overclock smoothed out the experience immensely on those settings.
Crysis is an unoptimized pos and is never as stutter free as games like COD4 (COD4 FTW!).
***XP PRO x32***
------------XP DX9 - High (stock) - 8.6 hotfix
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 45.36
------------XP DX9 - "Very High" (stock) - 8.6 hotfix
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 31.20
------------XP DX9 - "Very High" (690/1133) - 8.6 hotfix
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 34.33
***VISTA x64 8.6 driver***
------------VISTA DX10 - High (stock) - 8.6 hotfix
DX10 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 43.75
------------VISTA DX10 - Very High (stock) - 8.6 hotfix
DX10 1280x1024 AA=No AA, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 26.84
------------VISTA DX10 - Very High 2xAA (stock) - 8.6 hotfix
DX10 1280x1024 AA=2x, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 22.65
***VISTA x64 8.7 driver***
------------VISTA DX9 - High (Stock) - 8.7
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 45.13
------------VISTA DX9 - High (690/1138) - 8.7
DX9 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 48.66
------------VISTA DX10 - High (Stock) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 43.38
------------VISTA DX10 - High (690/1138) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: High ~~ Overall Average FPS: 46.24
------------VISTA DX10 - Very High (Stock) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 27.3
------------VISTA DX10 - Very High (690/1138) - 8.7
DX10 1280x1024 AA=No AA, 32 bit test, Quality: VeryHigh ~~ Overall Average FPS: 29.4
NOTES:
Specs are in the sig, using Vista x64 with 32bit Crysis because Crysis64 is ~3 fps slower. This might be because I have to use the dvd for Crysis64 as there isn't a nocd patch like for Crysis32.
XP is brief as I wanted to try dx10
The overclock used was only stable after changing the profile voltage to 1158 from 1046 (couldn't even go past 665/993 @1046)
Vista stutters much more on dx10 than dx9
DX10/9 High - is smooth and playable (with more hitching in dx9).
Very High settings are playable yet not always smooth
Hitting that ~30fps average @Very High from the overclock smoothed out the experience immensely on those settings.
Crysis is an unoptimized pos and is never as stutter free as games like COD4 (COD4 FTW!).