I’m having a difficulty on my pc and I don’t recognize what’s wrong with it. I’m getting 18fps only on left 4 dead here’s my computer specifcations please assist.

Intel Pentium D 3.0 GHz (overclocked to 3.3 GHz)
Sparkle GeForce 9600gt 1gb
4gb Kingston ram

I don’t recognize if my processor is busted or my video card is. I require discovering what’s the difficulty one way or another.