ahh ok sure, I guess i missread your post. So you are right the 3GB may not be a problem for running ED on full bubble.... but I fear the rest of his card will be a problem.
It also depends on his resolution and what FPS he expects to hit, i see 60fps being no problem at all maybe dipping a alittle with 1 card in a station. 2 cards in SLI (780ti) will destroy this game but again vram maybe a problem depending on resolution and Anti Aliasing.