I want the FTW and may end up with the 2GB version. If I did get the 4 GB version the extra VRAM isnt going to be for more performance with a single monitor even for 3D Vision so it'd be just for the Epeen overkill that Overclock.net brings out of me.
I may just SLI next year instead of upgrade to 780 and it will leave the door open for the longer run going into a two year + run if I should choose. I have a 850 Watt Gold PSU and I know it can run two if these cards but not sure if I can with two 780's when they release. So if I did go 4 GB it's more for open road options and perhaps resale than any performance gains currently on single monitor.
Yes the EVGA reference versions are the Vapor Chamber cards that is with the blower fan in the enclosed shrouded chamber. This traps the air and forces it out the rear flow air bracket and out of the case. I stated the reasons in my orevoius post why I like it. It's a preference thing. 680 - vanilla, SC, signature, and FTW versions are vapor chamber cooling. The only one that is a dual fan option is the Signature 2 by EVGA.
Some prefer non-reference coolers with open casing. Open cases GPU's dissipate the heat quicker off the PCB and allows the fan to keep it slightly lower temps. Lower temps may allow for slightly higher over clocks. The heat immediately exhausts inside the case and in a poor ventilated case raise ambient temps and can increase the CPU temp. Higher CPU temp may effect the CPU over clocking capability. Well ventilated cases it's a non issue for the most part.