yea but a quality 400w is way different from a 400w masquerading as a 600w,
example we all know the older CX 430 from corsair could handle gpus easily even if your forced to use an adaptor but it had a solid 12v rail,
the psu in this rig 15amps 12v1 and 14 amps 12v2 6pin power comes off the 12v2, and from the looks of things with a 125w cpu, he would hit the limit on 12v1,
FSP is a solid brand
4850 also has a board power of 110w vs a 4870 at 150w for the 512mb versions
basically put this looks to be a prime example of a cheapo unit not able to push the power rating i mean come on its a 600w unit that only puts out 348w on the 12 v rails lol the most important rail only pushes half the psu rated wattage.