Nvidia cards of 2013 or ATI

[Slamz]

So 650 cards and up. Some 650s (according to that site) may be better then 660s?

Yeah I think so... there's the 660 or there's a 660Ti or the 660 Superclocked or the 660Ti Superclocked...

So a high end 650 (Ti Superclocked) may be better than an entry level 660 (plain). But you can probably overclock the plain one yourself. I dunno if you can overclock a "superclocked" graphics card. I have to imagine that "Superclocked" means it's already been factory set to the limits of sanity.