Manifestor

While doing a little of my own research i came across a build somebody else thought up and was wondering if it would be good for me as well?

CPU + Mobo
X5 955 + ASUS M4A78T-E AM3 AMD 790GX
http://www.newegg.com/Product/ComboD...t=Combo.203158

RAM -
GSkillz DDR3 1333MHz
http://www.newegg.com/Product/Produc...82E16820231189

HDD -
WD Black 1TB
http://www.newegg.com/Product/Produc...82E16822136284

CASE + PSU
Antec 300 + Antec EA 650W
http://www.newegg.com/Product/ComboD...t=Combo.204132

Graphics card -
XFX HD 4870 1GB
http://www.newegg.com/Product/Produc...82E16814150394

Total - $834 not counting in Shipping and Mail-In-Rebates

Again any help is greatly appreciated.