Currently running my new pc build i just finished yesterday, Specs:
Antec Nine Hundred Black Steel ATX Mid Tower Computer Case with Upgraded USB 3.0
ASUS DVD Burner Black SATA Model DRW-24B3ST/BLK/G/AS
Western Digital Caviar Black WD1002FAEX 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9D-8GBSR
CORSAIR Gaming Series GS800 800W ATX12V v2.3 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC High Performance
MSI Z77A-G45 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
GTX 560 ti 2gb
i-5 3570k intel cpu
As you can see it took around 800w. You will need 750w - 850w and use this:
http://www.thermaltake.outervision.com/ But the thing is $60 for a psu wont get you very far atleast not a very good one.
$69.99 :
http://www.newegg.com/Product/Product.aspx?Item=N82E16817339002
is the best i could find for the money.
But i recommend that you invest atleast $100 in a good psu