How much do I need?

[JoshTheJoker]

So, before I pull the trigger on this build, http://pcpartpicker.com/p/DDLDWZ , I wanna know how much wattage I really need. I do not plan on SLIing, since this will be a Mini ITX build, and I only plan on lightly OCing the CPU

 

[RababNoor]

A Good Quality (Tier 1 or 2) PSU of 550~650W is enough
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

 

[ChumP]

That's a low quality PSU.
650 W should be enough for you.
Here's my recommendation.

EVGA SuperNOVA GS 650W - 79.99$
http://www.ncixus.com/products/?usaffiliateid=1000031504&sku=107146&vpn=220%2DGS%2D0650%2DV1&manufacture=eVGA