I just realised that the game does not support sli which a big turn off to me.

I cant reach 60 fps in many places with my gtx 580 sli on a 21:9 monitor so i really need that sli support otherwise the game plays like [censored]

Erm not to sound mean but sli/xfire is just a marketing thing so ppl buy 2 cards

Really? For those on very high resolution SLI is needed.

Wrong.... People really are brainwashed with technology.. I tested BF4,Crysis with two 660 GTX's everything on high, highest resolution..took one card out and there was no change in FPS, no change in anything.... Ya don't need two cards....

Disable one card, Once you do that you should see a performance bump playing ESO. Due to how SLI shares loads between cards, it takes a huge performance hit on games that don't support it.