I've recently changed my set up as per the specs below and since trying Crysis Warhead I get very noticeable drops in frame rates whether I high or low the settings. One minute the games ok and playable but then, even with no combat going on, it just drops to a slide show! The other issue I seem to have is Alien vs Predator in DX11 mode sometimes just freezes randomnly during play.
I have tested the card with Bad Company 2 at max settings with DX11 and it runs very smoothly with no problems. Same for Metro 2033 at fairly high settings. I don't understand why the huge drops with WH or the freezes with AVP? I'm fairly certain its not the PSU as BC2 at least should have problems?
Asus AM3 Crosshair IV Motherboard
AMD Phenom II X4 965 BE O'clocked to 3.8Ghz stable as per Prime 95
1 x XFX HD5870 1GB O'clocked from 800/1200 to 875/1225
1 x powercolour PCS+ HD 5870 factory clocked to 875/1225
6GB Kingston Hyperx RAM 1600OC
Corsair TX750W PSU
ATI Catalyst is most recent version. Downloaded the package from the AMD site including Drivers
, profiles etc.
Any help would be appreciated as I thought, with 2 HD5870 Crossfired, there should be a big gain. If there's something I'm missing in terms of setting up ATI Catalyst please let me know?? Crossfire is def ticked though.
Thanks in advance from a confused PC noob!!