hi everyone. i need to change the noisy power supply fan on my nvr and seen a few suggestions for Noctua NF-A4x20 5V for the case and the 10mm one for the psu. do i need the 3 pin ones or the 4 pin with PWM?
Dahua 4208 nvr fan change
- Thread starter aj1soad
- Start date
Had a look at my fans now and the case fan is Sunon dc12 0.8w and my psu fan is a delta electronics fan dc12 0.15a. so I take it I need the 12v ones not the 5v as suggested in most guides
DWinters1979
Getting the hang of it
You need a 12v indeed and if you buy Noctua you get one or two silencers which make the fans spin slower. It's definitely not quiet after this upgrade as the design of the case implies fan noise but it is an improvement:
Be sure to measure + and - as mine were reversed on my Dahua NVR
Be sure to measure + and - as mine were reversed on my Dahua NVR
Do I need the 3 pin one or 4 pin with PWM? I was thinking of cutting the grill off the PSU to try and reduce the noise as well. At the moment I e just got the case off the NVR and it's not that loud
DWinters1979
Getting the hang of it
when i just replaced the fan i noticed the housing was coole than before. But i have to admit i havent measured the temperature of the chips on the board etc.i swapped the fan more than a month ago and it has been running fine since, even after adding a other harddisk.