

Fans usually draw about 5 watts each, as do SSDs, HDDs take about 15-20 watts, and CD/DVD drives take almost as much as the mobo to run. I personally would never go under 700 watts, and I have relatively the same setup (only difference being that my mobo is from Gigabyte, and my RAM is from GSkill) The CPU needs 125 watts on its own, then the mobo usually takes almost 30-40 watts (much more so if you're using onboard graphics), a graphics card will take another 100 watts or so (if nVidia, ATI/AMD take about 50-75) so that's almost half of your entire PSU gone to just those things. With all that power, you're probably going to need a bigger PSU. It sounds to me like a PSU failure, which does make sense to me.
