I took a look at the Darkside GT 2150 RPM Black Edition earlier this summer, and it left me wanting for more. It was clearly a good product, but it was also clear that Nidec-Servo was playing hardball and that had an effect on the price of the fan. Darkside is back again with another Gentle Typhoon fan, this time the 1850 RPM model and in the PWM variant as well. Thanks a lot to Dazmode for sending the samples for testing.

Let’s take a look at the specs courtesy the product page:

  • Speed:  550-1850RPM +/- 10%
  • Air performance : 58.3CFM (AV max)
  • Noise: 30db (25cm from the fan, free air)
  • Power: 12VDC, 0.1A (0.44A peak max)
  • Operational voltage range: 12V 
  • Bearing: Ball
  • Expected life: 100000h/35c or 55000h/60c
  • Appearance: Full black
  • Dimensions:  119 x 119 x 25 mm / 4.68 x 4.68 x 0.98 in

The data sheet from Nidec also has more information on the material composition, the fan hole spacing, the wiring connection diagram and the P-Q curves for the fan (the 3-pin, voltage controlled version anyway). The rated speed is 550-1850 RPM (+/- 10%) and the voltage controlled GT fans in this speed range tend to go below that easily so let’s see how these fare in practice. I like the inclusion of peak current draw so customers can account for power consumption accordingly and not get a nasty surprise later. This is a standard 25mm thick, square frame fan which measured in at 120 x 120mm here even though the specs undercut an mm on each side. Ball bearings and an all black color scheme are always nice to see also! One thing missing here is warranty information which I would have liked to see on the product page. Let’s take a look at the fan now on the next page.

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