"20+4" gives the option for either 20 or 24.

This looks great for what you want:

Newegg.com - Antec earthwatts EA380 380W ATX12V v2.0 Power Supply 100 - 240 V UL, CUL, FCC, TUV, CE, CB, C-tick, CCC - Power Supplies

Sweet! Thanks Jerphee! The old PSU I have @ home is only 1 12V rail with 10a on the 12v side. Not good. Thanks again bro