Building a PC, have everything chosen but PSU

Here's my system:

CPU: Intel - Core™2 Quad Processor Q6600 2.4GHz w/ 2x4MB Cache

Video Card:eVGA - e-GeForce 8800 GT 512MB PCI-E w/ Dual DVI, HDTV-Out

Mobo:Asus - P5QL PRO w/ DualDDR2 1066, 7.1 Audio, Gigabit Lan, PCI-E 2.0 x16 (review on newegg said it was linux compatible )

HDD - Western Digital - 640GB Caviar SE16 7200rpm SATA II w/ 16MB Cache

RAM - Corsair - 4GB XMS2-6400 TWIN2X Dual Channel DDR2 Kit (2 x 2GB)

Case - ANTEC - Nine Hundred (6 stock fans)
Keyboard - Logitech - Internet 350 USB Keyboard, OEM

Mouse - Logitech - RX250 Optical Mouse, Black, OEM

Monitor - Acer - X193Wb 19n Widescreen LCD w/ 5ms, Black

Optical Drive - Samsung - SH-S223Q 22X SpeedPlus™ Serial ATA Internal DVD-Writer, Black

Would the VX450 be enough? Or would I need more?

I might overclock, or I might not. I havn't really decided yet. I probably won't.

And I'll never bother with SLI.

I'll be buying corsair, or maybe PC power and cooling.

Thanks.

Check out this website:
http://www.extreme.outervision.com/powercalc.jsp

It might help you decide what's best. I wouldn't take the number it gives you at its face value. If it tell ya you need a 430W PS then maybe getting a 500W one is a good solution.

It's worth checking out.

Hope that helps

Hmm... reviews on that PCP&P don't seem to be too good.

How much A on the +12v rail do you think I'll need?

The 450vx and the PC Power and Cooling 500w would be fine for the initial system, in fact excellent. They would also handle the single 4870. The 4870x2 would be too much for them. The minimum i'd go with your system and the 4870x2 is the PC Power and Cooling 610w, Corsair 650w and i'd be more comfortable with the 750 Corsair or PC Power and Cooling Silencer 750w.

Also, say I was running a single 4870 with my CPU overclocked to 3.4 Ghz, would the 450 handle it?

Okay thanks, I may go with the 650 then, just so I have some head room for upgrades.

The HX520 has (3) +12v rails. Each of them has 18a on it.

+1 ^ lunyone!!!