keynes
Multiverse Poster
I was under the impression that as long as its the same model of NVidia card, you could SLI two cards with different amounts of VRAM, but it will then only make use of the lesser amount of VRAM.
Yes but it is not recommended and you need to use Coolbits to "force both of the cards to use the lower of the two memory sizes and operate them together in SLI mode"
http://www.geforce.com/hardware/technology/sli/faq#c19