S Samar421 Reputable Dec 20, 2014 1 0 4,510 Dec 20, 2014 #1 Does an sli of a gtx660 and a gtx980 work and does it increase performance.
jimthenagual Splendid Apr 8, 2012 4,005 16 29,365 Dec 20, 2014 Solution #2 No, unfortunately they must be the same GPU for SLI. Upvote 0 Downvote Solution
C chenw Honorable Oct 25, 2014 1,665 0 12,460 Dec 20, 2014 #3 You can however use the 660 for PhysX, but not great many games use PhysX Upvote 0 Downvote