Good to know on the psu.
As for the 580, it’s more personal preference then performance here, I’ve always liked Nvidia’s control panel more then ATI, plus I know everything I use works nicely with Nvidia, unlike ATI who in the past certain programs have been known to not work.
In addition, like this current PC I don’t intend to have to upgrade for 3-5 years, so I’d rather go with the fastest (within reason, the duel GPU cards I have no interest in at twice the price) card available. If ATI come out with something between now and November that’s reasonably better performing and similar price I might consider it.
One thing I’m not sold on yet is getting the SSD. How much of a difference does it really make? I probably will only have W7 and maybe a few games on it, and I don’t usually turn my PC off overnight (though that is partially due to current several minute boot up times, yay no formatting for 3 years…)
Edit: Also, after reading whats happening with woven with duel monitors in the chatbox, defiantly nvidia. One of the main reasons I went with the gigabyte card is it looks to have a quiet heatsink, one of my biggest complaints with my GTX280. Same reason I’m getting the U12P. Low temps = lower fan speed requirement.