Advice on my build

Hi, I'm new 

When the last Xbox 360 came out I got it as a gift. Now as I was a kid I obviously liked it. But, I've wanted to get a decent gaming PC now instead of going for next gen consoles. So, I'm older and have saved up some money and come up with this part list. I just wanted your thoughts on it, if it is good value or not and if there is a bottleneck issue. My budget is 600$ and this seems to come just under this. If you guys think there is a part I should strech for I'll scrape together 20-30$ more. Here it is:

CPU: AMD FX 6100

Motherboard: MSI 970A-G46 ATX AM3+

Memory: 8 GB (2x4) DDR3-1600 Corsair Vengance

Storage: WD 1TB Caviar Blue 7200RPM

Video Card: Asus Radeon HD 7770 2GB video card

PSU: Seasonic 620W 80+ Bronze

Case: Corsair 200R

Thanks in advance!

Try to get a 7870.  It will destroy the 7770.  Give me a second, I will put together a build.

this is it