Please rate my proposed build for gaming.

Blorp Kola

Distinguished
Oct 27, 2011
152
0
18,680
Phenom II 960t
Gigabyte GA-970A-D3 Socket AM3+ 8 Channel Audio ATX Motherboard
8gb 1333 ram
Powercolor 1gb 6850
450w Powersupply
500gb harddrive
1080p Monitor

This is for a friend and I have a similar system.
How will it perform with skyrim, Deus ex, Portal2 etc.
Thanks