These 7950's are basically R9 280s - http://www.overclockers.co.uk/productlist.php?groupid=701&catid=56&subid=1673
The Superflower 550W is currently £10 less than normal - http://www.overclockers.co.uk/showproduct.php?prodid=CA-003-SF
The Superflower 550W is currently £10 less than normal - http://www.overclockers.co.uk/showproduct.php?prodid=CA-003-SF