I seen a used i5-750 for £70 to you US people that is good. anyway this is almost half the price of the new one. is it a good idea to buy the used one as I am on a budget
I often buy used, so nothing wrong with doing so in some cases. If you are looking to just upgrade the CPU only, and have everything else, that is a good move. If starting from scratch, spend a little more and get an FX 6300. http://uk.pcpartpicker.com/part/amd-cpu-fd6300wmhkbox