Three GTX 760s vs Two R9 290s

Solution
two 290's would be a lot more than 3 760's. but if that's your choice then 2 290's. 3 way does not scale well, so you are getting diminishing returns.

TropicoSuarez

Honorable
Feb 4, 2014
265
0
10,960
If I were you, I would buy one 780 TI. It will perform nearly as well as 3 760's or two 290's, but it will consume less power, produce less heat, and you won't get any of the stuttering problems that you get with crossfire. Also, if you want to upgrade down the road, you can add another 780 TI in the future, which will smoke the three 760's or two 290's, and you'll will become outdated slower.