dont get 970 sli, the 3.5gb vram issue is present more with 2 of them, right now the titan x costs wayyy to much, you can get 2 r9 295x2s for the same price or even cheaper. the titan x is the best "single" gpu, whoever mentioned about the r9 295x2 drivers clearly has no idea as theres nothing wrong with it and it still is the best "multi gpu card". id say wait for the new series of cards and see how they match up.