Graphics Cards and Video Cards

radeon hd 5770 newegg

is this a big enough power supply for my computer?

im considering getting this power supply to power my system but is it enough.

http://www.newegg.com/Product/Product.as…

heres my system

CPU: AMD Athlon™II X4 620 Quad-Core CPU w/ HyperTransport Technology

HDD: Single Hard Drive (500GB SATA-II 3.0Gb/s 16MB Cache 7200RPM HDD

MOTHERBOARD: Asus M4A78 Plus AM3/AM2+ AMD 770 Chipset DDR2/1066 SATA RAID Mainboard w/ GbLAN

MEMORY: 4GB (2GBx2) PC6400 DDR2/800 Dual Channel Memory

SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO

XFX HD-577A-ZHFC Radeon HD 5770 1GB 128-bit GDDR5

Dont know! your link doesnt work! post the wattage