If you want to test the full load, use Prime95. Google for it, i think Majorgeeks hosts a copy. Let that run for about 10 mins (as much as an AMD CPU really needs to plateau) and check the temps. If it's under 63ish, you'll be fine. And as someone said, if it's stable, it's good enough for the mean time. Trust me, I went to a Hyper 212+, and despite it not being the best on the market, the difference in noise is incredible. And for ~$40, there's really no excuse to wait it out.