Problem with x1900 512MB crossfire / slow graphic after upgrade

Hi there
I hope you guys can help...
I upgraded from x800xl 256MB to x1900 512MB and have problems running games
I mean graphics get choppy same here with dxdiag when I run DX test I see the cube spinning but it seems to lag every few seconds.

System spec

Abit IL9 PRO mobo
Pentium 4 HT cpu
2 x 1 GB Corsair Twinx ram
hdd & dvd burner at IDE

When I had x800 everything worked fine and I could run Counter Strike at 300fps, and now I can't run SimCity 4 cuz it's choppy

At first I thought it's a power supply problem but I upgraded to Ultra 600W delivering 35A at 12V, way more than requirements
also upgraded directX

I checked several different drivers: original and modified, no effect

System works well, youtube videos full screen too.
I have XP pro, and windows detects card as it should

I got this card for free, maybe it's just defected

Drawing a blank, please HELP
2 answers Last reply
More about problem x1900 512mb crossfire slow graphic upgrade
  1. Try running ATITools and run their artifact scanner. If it finds artifacts it could be bad memory.

    And look at the CCC information page and se what the clock speeds are set at. If its too low might just be a bad card and you might want to go back to your old one.
  2. Did you bother cleaning out the drivers first?
    Use driver cleaner pro first.
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