New PC?

[looqas]

Also, if you have a top-of-the-line graphics card, you'll need a faster processor to take full advantage (not neccessary to have more cores, but faster) - Something to do with the Core freq + FSB + PCI clock rates.
Usually higher end graphics cards perform best at full options+reso when cores are doing around 3Ghz+.

FSB also dictates the data transfer rate to and from RAM to CPU to Vid card. The CPU is the middle man who dictates the pace. Oversimplifying the thing: all the data transfers goes through the CPU at some point. That's why you need to have a fast CPU to feed the fast vid card with instructions what to do.

Q6600 is not a bad choice if that's the only choice of quads you can make. I just had a disticnt recollection that you can get one of those newer quads for the same price. I need to check my local price grabber (even though it does not help you since you Turkish are limited to one supplier.)

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Flying under radar.