NovaTronMC :
nikoli707 :
huge difference... the 780 at least 50% faster than the 760, and the 760 is roughly 25% faster than the 660 (not gk104 oem models).
And is there a performance difference between evga, asus, Zotac, Gigabyte, MSI?
virtually no performance difference.. just different coolers, some cooler than others, some louder than others... different warranties. for nvidia it is pretty well know that evga is the best. evga sells 40% of all nvidia cards, msi 20%, gigabyte 20%, asus 10%, and the other leftover 10% is sold by the other brands you will see, zotac, galaxy, etc.