I'm using AOC I2757FH, I got a pair of these. (same results on both monitors)
I'm currently using Adata 16gig 2400 ram, also tried 4gigs of Corsair Dominator 1600 and tried 8gigs of Patriot 1600 all with the same results.
Tried my old AMD HD 5850 and no problems with display and currently using GeForce GTX 780 Ti and no problems either.