I would much rather recommend buying 770 SLI or buying a 780. The reason for that is most of all the heat, noise and power consumption of having Tri-SLI.
Though it is possible to run the (i expect it to be) MARS 760 from ASUS with another 760 from any brand, since all three chips are still the same. You will though be limited to 2GB vram if your extra card only have 2GB, and running Tri-SLI with only 2GB.. That's the ONLY point where i see the extra vram versions as being a "must buy".
If you already have a 760 2GB, and the money for the ASUS MARS, you should easily be able to sell your card at a price so you can afford SLI 770s instead.
what he said.. you cant cram a 760x2 in with a 760... the cards must be the same.
Why not just pickup another 760 and have a standard SLI setup that will rival a 780ti for much cheaper??
SLI can only use the amount of memory on the lowest card.
So if you SLI two 760's, you have 2gb total for both cards to share... (not 4gb)
agree with above... if you have $650 to spend plus whatever your 760 is worth use (say $200?) so you have a budget of $800ish?
for that money... the setup I have is probably the best. superclocked 770 4gbs SLI. i paid like $700 for the pair when they were on sale on newegg like 2 months ago
You're a bit wrong, you can cram dual cards with single cards, it's been done for a long time. Mostly on the AMD-side, since Nvidia limits it alot.
Since the MARS isn't a "GTX 765X2" or any other standard card, but totally custom made by ASUS, and because Nvidia allows Tri-SLI with 760s, you ARE able to do this setup for tri-SLI. They even give you a SLI bridge in the pack, which would only work in tri-SLI (single card added) because of the max SLI of 3 cards on the 760.
I know this probably doesn't work on something like the 690 + 680, but it's because they're both standard cards...
And because Nvidia is a b**ch at some of their limits.