none. the rosewill arc 650 and thermaltake smart 650 should both be around $65, but neither are what I'd call a "best" bargain. the cheapest really good 650 watt is the XFX TS 650 bronze for $70. in this situation it's important to examine your needs again, because if you don't actually need a 650 watt psu, get a better, lower watt psu.
Well..i will oc my gpu (390) and i think it needs at least a 650watts psu
I'll agree there. with a power hungry gou it's even more important to buy a quality psu.
None, there aren't any good 650 watt psu's for $65 or under.
You can choose this one