"Ok, I may be exaggerating a bit, but power supplies are many times that last thing on the list to order. A necessary evil. But you should spend some time researching your options - even if you are just upgrading an aging unit. I am certainly a big fan of modular power supplies. The more modular, the better. And you can't get any more modular than the MWE Gold 750 Fully Modular. With a five year warranty and a 80+ Gold rating, you can be sure that you aren't wasting a ton of energy heating up your room. Well that might not be so bad in the winter, but your electric bill will thank you the rest of the year."