Which CPU?

[[TW]Fox]

Wondering if it might be time for a new CPU.

I've currently got a Core2Duo E4300 @ 3Ghz in an Abit IP35-Pro with 4Gb of OCZ Platinum. I've just ordered a GeForce GTX280 and am wondering if a CPU upgrade would be prudent so I can max out all my games for the next year.

Don't really want to spend a lot. Say 100 quidish? Dont mind a used CPU. What are my options? Is it worth spending more? I'm out of touch with the CPU market.

My PC is used for arguing on the internet and playing games.

 

[[TW]Fox]

What sort of money do they fetch, what could I expect out of it and what sort of performance increase would I see?

Thanks!

I'm using an Arctic 7 Freezer Pro thingybob whatsamajig.

 

[[TW]Fox]

Is it worth doing or will my 4300 still be sufficient @ 3Ghz?

 

[[TW]Fox]

No, I literally browse the web and play games. I game at 1680x1050 with max details and high AA and AF hence the choice of graphics card, but gaming is the most exotic thing I do.