Avoid that PSU at all costs, look at something like the PSU below.
http://www.overclockers.co.uk/showproduct.php?prodid=CA-013-PP&groupid=701&catid=123&subcat=2179
Also what are your system specs?
http://www.overclockers.co.uk/showproduct.php?prodid=CA-013-PP&groupid=701&catid=123&subcat=2179
Also what are your system specs?