Hey guys, currently I have:

EVGA X58 Motherboard
EVGA GTX 780 ti
Intel i7 975 @ 4.1 Ghz
Generic 1000 Watt Power Supply
2X6 Gb of Ram GDDR3
Windows 7

I want to add another 780 ti and maybe upgrade the ram. My question is would adding another 780 ti bottle neck my rig or would its performance be bottle necked by the old-ish Motherboard? Could my rig handle it as far as power consumption? What type of ram should I get? Thanks for any help/advice you can give.

-DarkSilhouette