as other have said don't get a cheap power supply if it goes pop so can your board and numerous other components.
don't put too much pressure on anything if u have to push to hard it probably not in the right way round etc.
amd cpu's can be a bugger but they do give better value that u can spread across ur other components.
can't think of anything else other than what people have already said, other than remember everyone here is giving you their own opinion u could find 10 people all with exactly the same hardware all with different opinions and problems with that same hardware
