warlock_dthpunch :
If you can spend $500 and want a Crossfire in the Future and want to overclock then go for this build I also add 2x8GB memory sticks...
http://pcpartpicker.com/user/warlock_dthpunch/saved/2rb0
You cannot corssfire on that board. The second card will only run at 4x which will give no performance increase. Also, that board has no MOSFET cooler and has been shown alot of times to overheat. DO NOT get it.
Also, the cx500 is WAY worse than the antc vp-450 because the cx line from corsair uses inferior capacitors an should be avoided.