Are these parts good for a gaming pc?

[Comsam]

I'm gonna build a computer for the first time and I was wondering if the following parts were good.

CPU: Intel Pentium G630
Motherboard: ASRock H77M
Video Card: MSI R6850 Cyclone PE/OC
Memory: Patriot Signature 4GB
Hard Drive: Hitachi Deskstar 7K1000.D (500GB)
Optical Drive: Lite-On DVD Burner iHAS124-04
Case: Rosewill FBM-01
Power Supply: Cooler Master eXtreme Power Plus 550W
I took this from PCMag

 

[CTurbo]

Not really. What is the purpose?

 

[logainofhades]

What is your budget?