CFturbo Contra-rotating Fan Demo - Empowering Pumps and Equipment
My most powerful Fan I have. This is the Delta GFM0812DU, a counter rotating fan which is insane. It Spins at 13800rpm in the front (Intake) and 13200rpm in the back. i
Supermicro 40mm Counter-Rotating 20.5k-17.6k RPM Fan (FAN-0141L4)