Btw i wouldn't pay $50 for that OZC.
Why you might ask?
OCZ StealthXStream 2 500W - $55.79 http://www.bestdirect.ca/products/230163/OCZ_Technology/OCZ500SXS2/
Then head over to NCIX pricematch it and get a $20 mir.http://www.ncix.com/products/index.php?sku=53965&vpn=OCZ500SXS2&manufacture=OCZ%20Technology
It's not worth $50 imo from some guy on Craiglist.
Much better deal for a better unit that has semi-modular cables.
OCZ ModXStream Pro 500W http://www.ncix.com/products/index.php?sku=33040&vpn=OCZ500MXSP&manufacture=OCZ%20Technology&promoid=1366
I have two OCZ ModXStream Pro 600W units they are very easy to install and quiet.
Don't know your exact budget but here's some other top quality units that would be fine with your gear.
They aren't semi-modular they have fixed cables.
XFX 450W Core Edition Single Rail - $49.99 CAD/$29.99CAD after mirhttp://www.ncix.com/products/index.php?sku=63238&vpn=P1450SX2B9&manufacture=XFX&promoid=1366
Antec High Current Gamer 400W - $34.99 CADhttp://www.ncix.com/products/index.php?sku=56786&vpn=HCG-400&manufacture=Antec&promoid=1366
The ModX 500w is great deal if you can swing that.
You'll be glad you did.