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Depends on price difference really. Quad is much preferable, a lot of games are now using multi cores. Bbc2 for example, you can see a lot of activity across all 4 cores.

- Which one is better and why?
- E8400 vs Q6600
- For gaming such as COD4 MW2, TF2, CSS etc.

I shall be looking into buying a new processor as I have lost complete confidence in buying used

I will not be overclocking

I shall be looking into buying a new processor as I have lost complete confidence in buying used. I will not be overclocking, thou I have Corsair H50 cooler ready to used on the chipset.