DragonSteelmods.com posted a review on the Scythe Kama-Flex 80mm Case Fan

Touting a 80000 hour life span and a fan speed clocking in at 1500, the KamaFlex looks like a great fan for keeping your case cool and quiet for quite some time. Like the 92mm version, the Kama-Flex 80mm Case Fan features the Sony developed S-FDB (Fluid Dynamic Bearing) to provide quieter and improved performance

Scythe Kama-Flex 80mm Case Fan Review