What PSU would I need for this certain build?

[e-coli]

I am planning to build a computer with a Gigabyte, B75M-D3H motherboard, a Intel 3770 i7 processor, ASUS GTX660 DirectCU II, 2GB GDDR5, 3.5 inch seagate 500GB 7200rpm hdd and 3x 120mm fans, 2x4gb ddr3 1600mhz what PSU would I need?

 

[jonoj96]

This psu will be fine
http://pcpartpicker.com/part/antec-power-supply-hcg620m

 

[zared619]

A 650 watt would be more than enough. You could probably get away with the 550 watt version of this PSU, but I always like to over-compensate when it comes to your PSU. XFX is almost the best you can buy, Seasonic being the best.
http://www.ncixus.com/products/?usaffiliateid=1000031504&sku=59616&vpn=P1650SNLB9&manufacture=XFX&promoid=1230