vegetaleb wroteYep it's not a 150$ PowerSupply but nor a 20$ no name Chinese, just a mid level brand ;)
I haven't red any complaints on this model over internet
Yes, sorry for that, seems you're both right...it's just that Chinese brands are usually exotically named :P
@Khanem: The solution is to get a good UPS that tolerates high loads, without dipping the voltage. For example, I have a 1200VA UPS, I replaced its batteries for 70% more capacity than NEW default batteries (the batteries were dead almost, that's why I replaced). Yes the UPS will last longer, but for me, I have 2 graphics cards, once I load the secondary one, which draws 70W under load, my UPS cannot tolerate the load. It dips on electricity outage. Even though my system load hasn't risen much, it's almost 400W-450W maximum, it was already bordering on the UPS's tolerance for load. A bit more load, and it can't tolerate. Don't forget that the card idles, let's say around 20W-30W, so the difference in power consumption would be much less than 70W (40W-50W).
And of course, never skimp on a PSU, so that's taken for granted. Once you have a quality PSU, you can be sure it isn't the PSU.