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Installed 6850 - now GTA IV only uses 2 cores?!

M

mazeroth

Golden Member
My computer is as follows:

AMD X4 630 @ 3.5 ghz.
4 Gigs DDR2
GTX 260 192

I ran the Unigine benchmark with DX10, High, 16 AF and 4xAA. My score was 24.0 fps at 604 points.

I then ran the GTA IV built-in benchmark with relatively high settings and scored 47 fps while using 87% CPU utilization.

Then, I uninstalled my GTX 260 drivers, removed the card and installed my new HIS 6850 and the newest Catalyst drivers.

I reran Unigine and increased to 34.0 fps with 865 points, an increase of 42%. I then loaded up GTA IV and whoa, it plays worse than before. WTF? I decided to run the benchmark and yes, it does. I scored 37.7 fps (was 47) with only 50% CPU utilization. I then went back into the non-benchmark mode, upped car density, view distance etc. to the max and ran around a bit. I then alt+tabbed to my desktop with Task Manager opened and sure enough, it looks like it's hovering around 45-50% CPU, with each of my 4 cores around 50%. What the #*c%??? I play the crap out of GTA IV and it was a huge motivator for getting the new card as I just got the 2 expansions for it, and also wanted to try MLAA.

Any ideas? I checked the affinity for GTA IV while it's running and it's set to all cores and each core is checked.

I appreciate any help!
 
Run driver sweeper and get rid of ALL video card drivers and the physx driver and start over using just you Catalyst drivers.

In short your Nvidia drivers are conflicting with your Catalyst drivers.

You are using less cpu because your video card is underperforming, because of the driver conflicts.
 
I tried Driver Cleaner and got this:

"c:\windows\microsoft.net\framework64\v2.0.50727\mscorwks.dll could not be loaded"

Lovely. I have been getting crazy error messages lately and I think this about does it. Time for a clean install of Win 7 64-bit.

For my 40GB Intel X-25 SSD, do I need to do a quick format before reinstalling Win 7?
 
happy medium said:
Run driver sweeper and get rid of ALL video card drivers and the physx driver and start over using just you Catalyst drivers.

In short your Nvidia drivers are conflicting with your Catalyst drivers.

You are using less cpu because your video card is underperforming, because of the driver conflicts.
Click to expand...

Sounds like he's not playing it the way it was meant to be played.
Don't upgrade to AMD kids, would be a shame if something...happened...and you weren't able to play games as well as before...
 
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