Originally Posted by phantomphenom
I'm asking this question since I learn everything on this forum......so sorry for all the questions. Google search for these types of answers were kind of bias, so I trust your guys experience with graphics cards set ups ^.^'
1) So theoretically having 2 x 4gb 680's in SLI mode will be able to play with the ultimate max settings including all AA types in the Nvidia control panel as well as the games options while maintaining a good amount of fps?
2) If i wasn't able to go ultra max on all graphics settings even with 1 4gb 680, if i had 2 of them, would that extra 4gb of memory allow me to take my settings higher than with only 1 card alone? How would this work? Would all of the data be split between the two 4gb cards?
3) Is the performance of 2 4gb 680s better than 3 2gb 680s?
1) Probably, for now, unless you play at a really massive resolution in 3D or something.
2) The extra 4GB of memory won't do ****. The extra processing power will. The same data is added to both cards, so you still only have 4GB usable memory. But you have one more GPU to do the work, so things go a lot faster. If the game and drivers support SLI, of course.
3) Can be, but only if you play games that use a lot of VRAM (so much that 2GB is not enough). Otherwise, no. Tri-SLI doesn't always scale very well, but should pretty much always be faster than dual SLI.
If you play a game like Skyrim, add some mods and AA, you can easily use more than 2GB of VRAM. In that case 2 4GB 680s would be faster. Same goes if you play on very high resolutions. Higher resolutions use more memory.