Gentle Typhoon D1225C12B7AP-29 (with the KÜHLER 620) – there is nothing Gentle about that airflow NOR noise

Ever since I bought the fan controller, I had been considering buying the Gentle Typhoon AP29 fan for the Antec KÜHLER 620 radiator. The fan I was using, the Scythe Kama Flow 2 1900RPM model, was reasonably quieter and slightly underperforming compared to the stock Antec fan. But I wanted to see if I could improve the KÜHLER 620’s performance by adding a high speed fan. Tests performed at SilentPCReview was showing that the KÜHLER 620 was only 1C warmer than the 920 if same fans were used. KÜHLER 920 has two fans and  those fans ran at a very high RPM (hence intolerable noise at full blast). So my idea was to buy fans that were on par or better than the stock 920 fans.

I started with one AP29 fan. The noise rating meant that the AP29 was only 3dB louder than the Kama Flow 2. That means, a single AP29 should be as loud as two Kama Flow 2’s. (+3dB means doubling noise, in case you were wondering)