HD7850 running around 70% on my Win XP?

[tomohiko]

________My Spec _____________
-Core2Duo E6750 2.7GHz
-Sapphire Radeon HD7850
-P5K-PRO Motherboard
-Earthwatts EA-380 Powersupply

-Heaven Benchmark 2.5 (DX9.0)
-Watt Checker (Sanyo)


________Sapphire HD7850 on Windows XP_____

DX 9.0 815
OpenGL 1010
observed max.power 190Watt

________Sapphire HD7850 on Windows 7______

DX 9.0 1532
OpenGL 1291
observed max.power　220Watt


omg, After I got Windows 7(trial), score is doubled !


is it common issue ?
Only my Windows XP got this issue ?
Or AMD Catalyst Driver cause this issue ?

 

[tomohiko]

I know CPU may be a bottleneck.


I wonder how Windows 7 increases Score and Max.power ?
If CPU is a bottleneck, Bench. Score must goes down on Windows 7.

 

[tomohiko]

Windows 7 is a better gaming os... no surprises really..

CPU must be upgraded to feel the worth of that card

Really ?
I thought newer OS put pretty much load on my CPU.

Soon, I buy CPU and M/B.

 

[tomohiko]

Get catalyst 12.6 alpha hotfixes update and reply then...

12.6 is worth to try ?

nvm.
I will try later.