My XFX Radeon HD 5870 is performing bad


I just got a new video card. A XFX Radeon HD 5870. And its only some games i can run on highest settings.
In games like WoW, Team Fortress 2, Left 4 Dead 2 and Killing floor the framerate is on 10 and 20 most of the time. What is going on?

My system looks like this.

Motherboard Asus P5E3 Pro
CPU Intel Core 2 Quad Q9300 2.5 Ghz(Overcloked to 3.2)
GPU XFX Radeon HD 5870
PSU Chieftain 850 Watt
RAM Kingston HyperX 8 Gb 1600 Mhz

My question is: Why are the framerate so bad in the games?
2 answers Last reply
More about radeon 5870 performing
  1. Try the latest driver and make sure all the cables connector are properly inserted...
  2. @knbsk8 please start your own thread instead of hijacking someone else's.
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