PSU Requirements on GTX670 + i5

[microDOS]

So I'm in the process of building a pc, and I need a psu.

CPU: i5 2500k
MOBO: P8P67 rev 3.0
GPU: Gigabyte GTX 670 OC 2G
Case: Coolermaster K350

What would be the minimum requirements for a power supply, if I plan on overclocking some day?

 

[WrektGlitch]

nVidia recommends 500W for the 670, and the draw for the i5 is 95W TDP processor. I'd go with no less than 650 watts. Check the power supply tier list that's stickied at the top of this forum.