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GPU exhibiting lower performance in Windows 7 than XP.

Joined
Jun 12, 2007
Messages
4,815 (0.73/day)
Location
Wangas, New Zealand
System Name Darth Obsidious
Processor Intel i5 2500K
Motherboard ASUS P8Z68-V/Gen3
Cooling Cooler Master Hyper 212+ in Push Pull
Memory 2X4GB Corsair Vengeance DDR3 1600
Video Card(s) ASUS R9 270x TOP
Storage 128GB Samsung 830 SSD, 1TB WD Black, 2TB WD Green
Display(s) LG IPS234V-PN
Case Corsair Obsidian 650D
Audio Device(s) Infrasonic Quartet
Power Supply Corsair HX650w
Software Windows 7 64bit and Windows XP Home
Benchmark Scores 2cm mark on bench with a razor blade.
My old HD 4850 512mb seems to perform poorly in windows 7 OS compared to XP.

Playing Skryim, I notice jitter and Tribes Ascend is laggy while in XP it is not.
The strange thing about Skyrim is both XP and Windows 7 show the same average FPS of 60.
At first I thought it was from installing steam on the HDD so I installed both games on the SSD but still the same result.

Fresh install of windows, installed the drivers, same result.

I would not have expected any difference in performance over the XP.
Especially not a decrease.

Is this just down to the card not handling the overhead of windows 7 desktop running in the background?
 
Are you using Aero?
 
Maybe its from going from Dx9 to DX10
 
Are you using Aero?
Yes.
Just would not think it would be a noticeable performance hit or cause Skyrim to jitter despite having the same fps as in XP.

Maybe its from going from Dx9 to DX10
The only game I have played which is using DX10 in Windows 7 is Saints Row the Third and despite the low fps it was smooth but when playing in DX9 it was choppy.

Skyrim is DX9 so I can't figure out why it would be any different as the drivers are the same legacy drivers I am using for XP.

Resolved issue.
Bought an HD7870
 
Last edited:
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