I'm about to buy all the parts for a new pc to play sims, and especially to play pCARS (and AC, rF2). I've already got three monitors for this too. I'd really like to hear how pCARS performs with two GPUs. I can't decide whether I should get one GTX 780ti or two GTX 780s. What will give the best results with pCARS? Your thoughts, experiences on this subject will be most welcome.