Im not sure which one to get is the 6950 worth the difference?
Sapphire hd 6850
http://www.amazon.co.uk/Sapphire-11180-00-20R-HD6850-GDDR5-Graphics/dp/B0048027IQ/ref=sr_1_1?s=computers&ie=UTF8&qid=1339771503&sr=1-1
XFX radeon hd 6950
http://www.amazon.co.uk/XFX-Radeon-HD6950-Graphics-Display/dp/B004LB5AT0/ref=cm_cr_pr_pb_t
Sapphire hd 6850
http://www.amazon.co.uk/Sapphire-11180-00-20R-HD6850-GDDR5-Graphics/dp/B0048027IQ/ref=sr_1_1?s=computers&ie=UTF8&qid=1339771503&sr=1-1
XFX radeon hd 6950
http://www.amazon.co.uk/XFX-Radeon-HD6950-Graphics-Display/dp/B004LB5AT0/ref=cm_cr_pr_pb_t