Well, the results are really not conclusive or even worth me wasting time on. The cards do run a few degrees cooler, but not much. Here are screenies (note, full size they are 1920x1200):
Idle, no fan:
Load, no fan:
Then, I had a 120mm Thermaltake blowing on both video cards directly..
Idle, with fan:
Load, with fan:
I noticed it was just a few degrees cooler at full load, but nothing to really worry about. The big difference was just in the temps of my video cards. And that was with the fan running at about 1000RPMs to keep the system quiet. I think I'll leave it the way it is.
Gaming System: Windows 7 x64 Ultimate, Intel Core i7-2600k @ 4.7GHZ, Swiftech Apogee XT waterblock with custom watercooling kit in Corsair Obsidian 800d case, 8GB Corsair XMS3-1600 RAM, Asus P8P67 Pro MB, 2xEVGA GTX460 1GB FTW in SLI (900/2075), 2x150GB WD Velociraptor 10,000RPM 3.0gb/s 16mb cache in RAID 0, Coolermaster Real Power Pro 850W PSU
HTPC System: Windows 7 x64 Ultimate, AMD Athlon64 X2 5400+, 4 GB OCZ PC6400 RAM, EVGA GeForce 9600GSO, 320GB Seagate SATA HD, ECS GeForce 8200 MB