Processor Swapping

[[TC]»Elmo«]

P4s are the hottest running CPUs ever made. If you've already got a 3.4, there's no point getting a faster P4, it won't make enough difference to be worth it (8% max).
If you have a socket 775 motherboard, you may be able to get a core2 for it, although being a dell who knows what'll actually work in the thing.

(2012-08-24 22:19)Tommer Wrote:  I suspect that they are the same motherboards, since the PC's are quite similar

It's a Dell, don't count on it. The same model number will sometimes have different motherboards depending on the age and the original spec. The same case will often have very different specs. If the cases are visibly different, there's a good chance that the motherboards will also be different.