Need help what psu???

[CRUMPLYPORK]

I want to add a second 560ti but what psu?

Current specs

Striker II extreme
Q9550 3.2 gig
Wd vraptor 150gig
8gig ram
1 x ASUS GTX 560ti TOP CU 2
Edit I currently have a 650w psu

Please help

 

[RJC]

You should be fine with the PSU below:

http://www.overclockers.co.uk/showproduct.php?prodid=CA-117-AN&groupid=701&catid=123&subcat=1088