GPU fans and heatsinks aren't the only options. There's also the
The Card Cooler, which got a KickAss award from MaxPC in the special Winter edition. Dual ball-bearing 80mm Sunon fans running at 2800 RPM, and it cools
both sides of the card, since it mounts perpendicular.
There's an added benefit to using this over the GPU fans: temperatures for core, heatsink and RAM all drop. From MaxPC:
The core temperature plummeted from 141 to 111 degrees. Yikes! Both the heatsink and RAM dropped to 97 degrees - that's a 44 degree drop in RAM temperature!
On the positive side, it's great for overclockers and it's only $20. On the negative side, it's kinda loud (yer adding two new case fans)
Simple to install: just take off the card screws in the first and third positions, so it also cools the card in the first PCI slot.