I am building a new computer and pretty much that last part I'm deciding on is the GPU. I was originally going to go with the Nvidia GTX 760 SC but i saw some reviews of the new 280x and it obviously does really well. I am on a budget so I'm wondering is it really worth the extra 55 bucks to go the 280x, or its just paying more to get more? My main use is for HD video editing with some 3d work in there but of course i do spend a lot of time gaming. Thanks!