Overclockers Online posted a review on the GELID Silent 12 TC & PWM Fan

I was extremely pleased with the GELID Silent 12 TC and PWM. They seem to be designed very well and perform exceptionally. The performance to noise ratio is also excellent, making these fans worthy of having "Silent" in their names. The installation is easy, thanks to the rubber mounting posts which I prefer over screws. Even the MSRP for these fans is attractive at $10.80 for the TC and $10.50 for the PWM.

GELID Silent 12 TC & PWM Fan Review