Need advice - Upgrading computer.

Both, and the Q8400 is not slower than the E6700, it's actually slightly faster (per-core)

 

I actually heard from a friend, that even if you have a quad-core processor, it only uses two cores of the four to plays game. :S.

Although I know that some games do require quad-core processors.

Anyway, thanks for your help. .
Decided to buy the Q8400. XD.

Thanks ddp for the help with cases/cooling problems. .

 

As a blanket statement it's completely false. Most games only use one core, some use two, but incresingly many (and arguably, the ones that matter, where your CPU actually affects performance) are using 4 or more cores.

 

Well, the main reason I wanted to buy a faster Dual-Core was just to play Black Ops on my PC. I bought the game but my processor wasn't fast enough to play it. :S.

That's why I was debating whether to buy a dual-core or quad-core for gaming. XD.

 

Quads are being used increasingly in games, and they are a borderline necessity with crossfire due to additional CPU load created by the drivers, and the fact that you're going for higher performance, which means you need a faster CPU to keep up.

 

Hmm, yeah, my CPU is uber outdated, quite stunned that I was actually able to play MW2, but Black Ops just required a power-up in CPU speed. Guess I could've overclocked it but I don't know how, and I don't really have any cooling solutions right now for my rig.

Anyway, I'll probably build a completely new rig next year when I get enough money, for now, this is enough.