bignastyid :
It would probably power the card, but it's a very very poor quality PSU and could damage other components in the system.
http://www.hardwaresecrets.com/cooler-master-extreme-power-plus-600-w-power-supply-review/9/
I found this answer on your analysis.. tell me what you think?. (i use google translator)
"The label specifies that the source lines support a +12 V max. 18 A and if you notice, while this specification is not violated, the source did not show any fault, and as he notes Martin was due to leave at 18A load on these lines and increase those of + 3V and + 5V respectively, to reach full power and see if it was supported. Instead + 12V lines overloaded and burned down clear source ... They wanted ?? !!
If you look carefully until no test 17 source presents no fault as it is in this last where the load on the lines of + 12V reaches its peak 18A, while the lines of + 3.3V and + 5V are just 5A loaded when the label specifies that can be loaded up to 25A and 30A respectively.
A simple mathematical exercise (which is not electrically exact) show that raising the burden on those lines, even without reaching the maximum power specified by the nameplate is reached. See ---- & gt; 600-432 = 168 - & gt; Then (arbitrarily) we divide 168 100 + 68 and it turns out 68 / 3.3 = 20A (5A below the max. Specified) and 100/5 = 20A (10A below the max. Specified).
Another point to consider is that if you look at the evidence, these were carried out with nominal voltages of 110V (American standard) and anyone who knows a little electricity knows that the yield curve is higher for 220-230 110-115 the so efficiency (at least in regard to our country) is miscalculated.
With what conclusion can be seen that the source if it produces what it promises."