Put this into my brother's build a couple months ago. 49A on a single 12v rail, and has both 4-pin AND an 8-pin power plug to accomodate most mobos. The older ones used to ship with 2x 6-pin PCIe but the one I got 2 months ago came with 1x6-pin + 1x6+2 pin, FYI.
PCP&C 610W -- $60 AR @ Newegg
PCP&C 610W -- $60 AR @ Newegg