All the P/Ss mentioned so far are excellent choices. I've used them all with great results....just make sure you get the higher end stuff. You might also consider a Seasonic....quiet, tough, and dependable....only downside is the cost....but with what's going into this unit, that doesn't seem to be an issue. http://www.computergate.com/products/item.cfm?prodcd=P4ZO40KI@ http://www.seasonic.com/product/pc_atx.jsp Michael Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://freepctech.com/pcbuild.shtml