I have a Corsair TX650m PSU, which has a Zero-RPM feature, meaning supposedly it only spins when under sufficient load. The only time I ever see it spin is during bootup for about 10 seconds, and the fan makes a strange noise: http://www.youtube.com/watch?v=2ICQmy6aYJ0&feature=yout.... It's possible that I don't place enough load on the unit, but I'm not sure.
I've been told that this isn't normal and have been suggested to RMA the unit, but my question is the following. My understanding is that PSU's become worse/less reliable as time goes by, and this PSU is relatively new. If I RMA the unit, I'm assuming that I would be given an older PSU from Corsair (same model, but probably used for a while). Is it worth it to RMA in this case? I'm slightly worried that the PSU I receive will have a shorter lifespan. Thank you for your input.