The 760's I bought have 4Gb VRAM EACH! . Furthermore, there are no new 780's being made. What's left is what's being sold so in 6 months time there may very well be no more 780's left and judging from the fact that in a few days the AMD R9 290X will be released, it will drive Nvidia prices down even further thereby making the 780 Extremely attractive and before you know it, no more 780's left and you would not get your second card to SLI. If there's anything I've learned about using dual card solutions it's Always buy local, NEVER mix different brands together and always buy both cards at once. It just saves so many headaches down the road. I learned my lesson trying to crossfire two identical AMD GPU's and VRAM cards from different brands. Never again! For me it's buy it all at once or accept the single card solution.