Low fps in bf3 and low 3dmark11 physics scores

[Sebbo90]

System specs:
amd phemon ii x4 955 @3.2Ghz
4gb Ram
amd 6950 2gb
gigabyte 990fxa-ud3
SSD

In July I was running this setup fine on bf3 with no lag at all. However I didn't use my pc over the summer and about 3 weeks ago installed windows 8 on it (clean install) re installed everything fresh and now i'm hitting 22fps on battlefield so i decided to run 3dmark11 basic edition. Here are my scores:

SCORE
P3373 3DMarks
GRAPHICS SCORE
4840
PHYSICS SCORE
1798
COMBINED SCORE
1724

Which are way to low. Is my cpu holding back my graphics card? Or is it a graphics related matter?

Thanks

 

[twelve25]

Do you have the latest Catalyst drivers?

Are you positive you are using the same quality and resolution in bf3 compared to before?

 

[Sebbo90]

Yes latest catalyst drivers taken off amd website (version 12.10). And just auto-detect settings as I have always done and looking at them they are detecting the same settings I used on windows 7. Also I just overclocked my cpu to 3.6 and still getting low scores on 3dmark11.

 

[Sebbo90]

UDPATE tried latest 12.11 beta driver and saw no improvement

 

[Sebbo90]

UPDATE 2: Ran gpu-z and taskmanager to see cpu and gpu usage and on the last test of 3dmark11 that utilizes both cpu and gpu the gpu load is about 35% whilst the cpu is on 90%.

 

[ikmal2129]

revert to window 7?

 

[ikmal2129]

revert to window 7

 

[ikmal2129]

revert to window 7