40mm Fan Selection

[JokerProduction]

I'm sure I'm not the first to replace the noisy fan in their NVR so what is everyone using.

 

Stock fan is a Delta Electronics EFB0412HHD

12v, 9.9CFM,30.5dB, 8200RPM

https://www.digikey.ca/product-detail/en/delta-electronics/EFB0412HHD/603-1397-ND/2560521?utm_adgroup=Fans+%26+Thermal+Management&mkwid=s2HCSXBpQ&pcrid=267488347852&pkw=&pmt=b&pdv=c&productid=&slid=&gclid=Cj0KCQjw4fHkBRDcARIsACV58_Ed3ALEjClhQb3SzsITs_VIT9XgPuPk_QkdcRvWcjbehOD1BhumIAwaAu4OEALw_wcB

 

 

The only fan noctua has that will work is the NF-A4x20 FLX

12v, 5.5cfm, 14.9db,5000RPM,  19$

 

These fans are all over amazon and seem to be a good competitor. 

https://www.amazon.ca/Quiet-Gdstime-Brushless-Cooler-Cooling/dp/B078K55H8T/ref=sr_1_8?keywords=40mm+fan&qid=1553812778&s=gateway&sr=8-8

12v, 8.3CFM, 22dB,5800RPM 13$

 

 

Not sure if the noctua would cool the power supply enough.... Thoughts?

 

[Electronics Wizardy]

If you just want it quieter, id just put a reistor in series with the fan. Then it will spin slower and be quieter.

[Enderman]

A lower performing fan wouldn't be ideal for the PSU's lifespan, and possibly let it overheat.

There's a reason such high rpm loud fans are necessary for those compact 1U power supplies.

[JokerProduction]

31 minutes ago, Enderman said:

A lower performing fan wouldn't be ideal for the PSU's lifespan, and possibly let it overheat.

There's a reason such high rpm loud fans are necessary for those compact 1U power supplies.

 

Thats why I didn't immediately just grab the Noctua fan as I feel its under powered.  Its just this stock fan is so loud and obnoxious it has to go.  It is louder than my system with 9 120mm Fans.  I'm just hoping someone can give some feedback on other fans.

 

I ordered the 13$ fan I think it should suffice considering the fan moves 84% of the flow and the powersupply is designed to process signals from 16 cameras and provide POE for 8 and power 3 hard drives and I only have 6 POE cameras and one hard drive pulling from it.  If I have to I can always add another fan on the back side.