I could have sworn SLI meant one graphics card rendered one half of the screen while the other rendered the other half of the screen and then the primary GPU uses a very small amount of it's power to stitch the two together rather than rendering alternate frames.

---------- Post automerged at 18:11 ---------- Previous post was at 18:07 ----------

Frankly in terms of getting best use of graphical memory they should be using Split Frame Rendering not Alternate Frame Rendering.

 

Actually, they've fixed the 840 as well with a firmware update. Some are saying that a similar problem, though not as major, is creeping back up, but I've not had any problems with mine since I installed the update.