120mm Fan Testing on an MCR120 Radiator Round 6

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As far as the higher speed GTs...I have no idea. I know some folks on OCNs air cooling forums managed to find them by special order through some Japan sites, but it looks like they are paying $60+ a piece for them and their subjective tests seem to indicate they were fairly loud... So until they become readily available, not much sense in testing them.

Yes, they're damn expensive like this "MEAN"-Typhoon.



Shot with ordinary GT1850.

D1225C12BBZP-00 with rectifier ring at the blades for high speed.

Max speed : 5400 rpm , 150.1CFM , 1.14 Amp , 150 Pa / 0.6 inH2O , 50.5 dB,
Its the PWM version (4 wires) with minimum speed 1000 rpm at 0% duty cyle.

Non PWM part no is D1225C12BBAZ-00

It has the beastie CFM, imo one of the most powerful 120x25mm, 12volt fan and also has a very wide range from silent at 1000 rpm up to max speed at 50db that covers from mid to high cfm range while at 25mm thick.