What do you have in your system? I highly doubt you have any need for anything anywhere near 1000W, it has 2 CPUs but only a single PCI-e 16x slot so you have zero need for anything over 650 W, it isn't possible to need more with that motherboard.
It looks like a standard case though so it should work with any standard ATX power supply.
2 xeons is at most 130 W each, for 260 W, a GTX 470 consumes about 215 W of power, thats only 475 W, about 550 W max for the whole system assuming a few hard drives. It doesn't actually consume anywhere near as much as you think, if you want to check get a kill-a-watt meter, it plugs into the wall between the wall and the computer power cord, it will tell you exactly how much power you are using, and it is rarely what you would expect.
That was wayyyy to short for a real memtest run. Let it run for at least 5 passes, i would just leave it to run overnight, its not a fast program and it takes a while to check every single block of memory repeatly
but i dont get bluescreen always, but this card run in my system 20-40 fps in high bfbc2, crysis 15-25 fps, crysis 2 20-30 fps. hmm maybe the problem is the system i have xw8200 3.6 x2 cpu, maybe it is older and when i do 3dmark test i get terrible FPS is physics test the cpu dont support it and this can be the problem