Hwan, PTR
I'm running a PNY Quadro 1300. I needed dual DVI and I've seen the 1200 run, so I went that way instead of the 6600GT. It's GPU is very far back, more so than any 6600 or other card I've seen. You shouldn't have any problems with a GPU further away.
I was having both VF700 Fan and fins touching, but dorking with the angle of the NB47 fixed both. As a side note, I am running the VF700 off the Chipset fan power. It is spinning that at about 2812 RPM (quite fast) but here are the specs:
CPU: 39C
MB: 37C
GPU: 36C
Ambient: 32C
I've been working on exchanging fans on my SwiftTech CPU heatsink, of which the SilenX 80mm 14db rocks all over a Papst 80mm I have dropping the CPU 5C spinning 400 more RPM quieter. The reason I bring this up is I think with the added airflow, I might move the VF700 power back to the GPU power.... Choices.
Thanks,
Skinner