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Windows 7: Big loss of FPS after Seven migration

01 Feb 2012   #1

Seven PRO SP1 32bits
Big loss of FPS after Seven migration

I've just migrated my old PC to Windows 7-Pro-SP1, and now: 3DMark2001SE score is 12000pts.
I had 17000pts when running WinXP-Pro-SP3.
Of course, I ran before migration, the "Microsoft Windows 7 migration advisor" and it just told me all will be fine.
All the windows update did run OK.
I've tried to replace the video-driver with the last nVidia, score is lower: 11000pts.
Of course, no anti-virus during the test; and task-manager is calm.
So I think I encounter a problem, but where to search ??
P4 3.2GHz HT
2500MB DDR1 in dual-channel
video AGP 8x 7600GT
all hardware exactly the same as under WinXP

Thanks in advance,

My System SpecsSystem Spec

01 Feb 2012   #2

Seven PRO SP1 32bits

New try: I've disabled Hyper-Threading, and score is the same
Other test: in BIOS setting "AGP aperture size", was 256MB, tried with 64MB, exactly the same.
I am sure there is one "big" reason to low score 17000pts to 11000pts, this test that performance are quite identical with WinXP !
My System SpecsSystem Spec
01 Feb 2012   #3

Microsoft Windows 8.1 Professional

The video card driver is not optimized anymore for such and old application, try a newer version of 3DMark, or go back to XP?
My System SpecsSystem Spec

02 Feb 2012   #4

Seven PRO SP1 32bits

You're right, probably no more optimized for DirectX 8 ...
I also notice severe lost of graphical ressources in OpenGL game (Ennemy Territory, a Quake3 engine-based), just 25 fps in maps where having 70 and more on XP
So thanks for smart advice "go back to XP"
Bye all
My System SpecsSystem Spec

 Big loss of FPS after Seven migration

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