With the fast changing prices CPUs and Grapics cards, is there a right (and therefore a wrong time) to buy them? What I'm getting at here is, do the prices fluctuate as and when, on an ad-hoc basis or are the prices ammended at fix points such as monthly, quartely etc. If it is the latter then it makes sense that whatever items you're after, you buy them at the beginning of a new price period and not at the end of one. This could amount to quite a difference in price for the sake of a few days. Any ideas?