My power supply fan is noisy as all get out when I turn on my computer each day, and after about two minutes it quiets right down and works and sounds great. I'd like to get a new fan to have on hand when this one quits. Are these fans one size fits all? And where's a good place to buy one? Thanks. Walt Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com