Power comsumption problem

Plenty of power.
My estimates:
CPU: about 8 amps @ 12 volts, my Q6600 OC'd to 3.6 GHz pulls 9.5 amps (measured)
Video card : about 9 amps @ 12 volts
RAM: 3 amps @ 3.3 volts (measured)
3 HD's: no more than 3 amps @ 12 volts, 3 amps @5 volts
Motherboard: no more than 5 amps @ 5 volts and 2 amps at 12 volts
Fans: 1 amp @ 12 volts unless you have a lot of fans.

Actually something like a 450 watt Corsair PSU will be plenty.

If you were a hardcore gamer, seriously overclocking, and had mutiple high end video cards then it would be a different matter.

With just one video card you'll be fine even when overclocking. The psu can handle it. Just increase the overclocking a little bit at a time.

Good Luck!

Just a comment:
Hmmm. 4 Rails - 12V @ 18A. 4x12x18 = 864W and thats not counting the 3.3 & 5V rails. Some 600 W PSU. The PSU can not even supply 3 12V rails @ 18A. Wish they would provide more realitic spec.

Here's a link to a technical review of the OCZ GameXtreme 600 watt power supply:

http://www.hardwaresecrets.com/article/451/1

I also went over to the OCZ web site looking for info about their 700 watt version. Turns out the GameXtreme series are for mainstream users. They have two other series for high performance.

NOT knocking PSU - Just the marketing!

WR2. Read between the lines, and I repeat No way in H will you be able to get 18A on four rails - Not even 3 Rails @ 18A, and do not use forth Rail - Just a marketing ploy
cji
I dought you could get a usable 580, more like approx 550W, could be less. And that is at close to 100%. The 580 includes the +3.3 and +5V rails. This would equate to an average of approx 11.5 A if load was equally divided. Or say 15A on V1&2 leaving only 8A each for V3&4. They could very easily set it up for 18 Amps each on V!&2 and then lower the current limit to a more realistic value. But then that hurts advertizing

WR2
Don't think I'm confused. It is advertized as having 4 x 18 Amp rails. Which is correct AS Long as you do not try to use at that load. Almost all PSU's manuf do this. You then have to look at the full specs, ie it's only 600 W total and only 580 W total for +3.3/+5/+12. The majority will not exceed the REDUCED limitations; However, I would prefer to have a spec like 18A, 18A, 8A, 4A (combination to equal realistic Values. But alas also has drawbacks - the used would have to know which goes where and "left over (like roll over min)" would not be available to another rail.

I have one that uses three different current regulator in its 3 x +12V rails and all three rails can be run at their Max listed Rating.

WR2
MY POINT is that the PSU can not Repeat CAN NOT provide 18A on all 4 12V rails.
enough said, Bye.

It does not confuse me.