I own a D. 4700. It previously had a x300 that ran well but I still decided to upgrade to an x800PRO. Before I upgraded I reformatted my computer and my x300 seemed to have decreased in performance. So when I upgraded I expected a huge difference however.. I am having prblems. I play Counter-Strike Source very frequently, and I notice that when I see 5-8 players on my screen at once, my frames per second will go down to 15-20fps, which is unbearable for that game.

 

I was wondering wether reformatting may have affected my computer... possibly I do not have the best drivers for my motherboard? The problem does not lie within the video card drivers beacuse i've already reinstalled and did everything possible with the drivers. Now i'm thinking it's the pci-e slot that is causing me some problems. Where can i get motherboard drivers for my dell? Also could it be other problems? It's not heat because heats affect gradually slow down your video card, it's not the power supply, because it would just freeze/shutdown.