Hello Tom's Hardware! First off, this site has been an amazing help for most of my computer issues, but I've just run into a problem that I can't seem to figure out, so I thought I'd post it.
I just recently upgraded my computer's graphics cards to two HIS IceQX Radeon HD 6870, Each having 1GB of GDDR5 RAM, and I crossfire them for most games (assuming they support it), but for some reason all of my games are running 30FPS or lower, including Left for Dead 2, Dead Space 2 and even Diablo 3. I tried dropping all of the video settings in each game, but the framerate is unaffected. With my old card, which was a Sapphire (and only 1 at that) I could run everything under the sun with max settings and hitting well over 60 FPS. Could it be the drivers? I've heard that the latest AMD drivers are really crappy, but I'm not sure what to do at this point... 15FPS is killing me in Inferno mode in D3... please help!
Well first with Crossfire you still only have access to 1gig of ram. Even though each card has 1gig the system will only be able to use 1gig in a Crossfire setup. As for the 6870 with a Crossfire setup it should be running better than that. What card did you have before that? And did you make sure you removed all traces of the old drivers especially if you were running Nvidia before that. As far as drivers go I am running the latest AMD/ATI drivers and have not had one problem with them so I do not think it is the drivers alone that is the problem.
first thing i would do is uninstall the drivers(5000 and 6000 may be different).
Now I know everyone will tell you to use driver sweeper blah blah.me,never have,never will,i just uninstall through ADD/remove programs in the control panel,uninstall caps also.(been running AMD/ATI for over 10 yrs,never had a driver issue myself)
download the latest drivers and install those WITH the latest Cap profiles(12.7 CAP3).