Phoronix: ARCTIC Accelero Xtreme Plus II

If you're a Linux desktop user on an open-source graphics driver that lacks proper fan management and power management support, you may want to consider an after-market graphics card cooler that is more efficient and also quieter. One of the high-performance after-market GPU cooling solutions is the ARCTIC Accelero Xtreme Plus II, which boasts three fans but is very quiet and does an incredible job at keeping NVIDIA and ATI/AMD graphics processors operating at quite low temperatures.

http://www.phoronix.com/vr.php?view=16732