I'm really sorry but I don't know much about this stuff
I didn't realise RAM could be so complicated!
Since I have started this post, I have changed my mind on the RAM I want to use but I'd like to keep the same motherboard. I'd be really grateful if either of you would be able to answer this question: http://www.tomshardware.co.uk/forum/327731-12-answer-needed-asap-please
If it helps, my CPU is an i5 3570k. I really don't want the CPU to deteriorate. I am aiming for this PC to last me at least 3 years, if not 5