Hi guys, recently nVidia released theirs new mid-range card GTX 660Ti. I was thinking about changing my current GTX 480 to GTX 660Ti. I have saw quite a few reviews but I cant really see much GTX 480 in there so I couldn't compare both cards. I could sell my card for £180 so the change would cost me about £65. What do you think about the change, is it worth my while??