Will a 400W PSU be sufficient for these specs.

I just wanted to know if a 400W psu would be sufficient to power this build, if not, what would?




SAMSUNG DVD Burner SATA Model SH-224BB - OEM

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HGST HDS721050CLA362 (0F10381) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

GIGABYTE GA-78LMT-S2 AM3+ AMD 760G Micro ATX AMD Motherboard

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SAPPHIRE 100358L Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 CrossFireX Support Video Card

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Crucial Ballistix Sport 8GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model BLS8G3D1609DS1S00

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W Quad-Core Processor HDZ965FBGMBOX

http://www.newegg.com/Product/Product.aspx?Item=N82E168...