System Completed -- How can I reduce idle noise?

twizzlybear

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May 10, 2015
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I completed a wonderful build thanks to all the help here:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Xeon E3-1231 V3 3.4GHz Quad-Core Processor ($255.48 @ Newegg)
CPU Cooler: Scythe Kotetsu 79.0 CFM CPU Cooler ($41.04 @ Amazon)
Motherboard: ASRock H97 PRO4 ATX LGA1150 Motherboard ($89.66 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($60.99 @ Newegg)
Storage: Samsung 850 EVO-Series 500GB 2.5" Solid State Drive ($177.99 @ Amazon)
Video Card: MSI GeForce GTX 970 4GB Twin Frozr V Video Card ($348.89 @ Amazon)
Case: Fractal Design Define R5 w/Window (Black) ATX Mid Tower Case ($99.99 @ Newegg)
Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($83.98 @ Newegg)
Wireless Network Adapter: TP-Link TL-WN725N 802.11b/g/n USB 2.0 Wi-Fi Adapter ($9.89 @ Amazon)
Total: $1167.91
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-03 12:58 EDT-0400

Now completed, the build had 2 case fans, 2 GPU fans and the CPU fan. The CPU would idle around 37 deg C. I was a bit irritated by the noise (I'm very sensitive), so I tried unplugging the front case fan and the CPU now idles around 38-39 deg C. I don't see this as problematic (am I nuts?).

So I'm trying to figure out what I can do to bring the noise down further. The Kotetsu seems to have a very low db per pcpartpicker (5-28db). The fans that came with the Fractal R5 seem to be very quiet per fractal's site (19db). Not sure what else I can do here. I've been told the GPU I picked was quiet so...

Are there aftermarket fans that would be quieter for the case? Any ideas? Thanks so much!

 
Solution
If you are noise sensitive, I sure hope you didn't built this for gaming because is gonna get louder.

The noise numbers they sold you are for the component only, the fan, all by itself, suspended in mid air, the noise generated by the bearing, that's it. Now of course once you have mounted in the case, the motor's vibration is gonna be transmitted to the case (add noise), the pushed air is hitting the protective grill (more noise), hitting other components (more noise). So... you gotta deal with these issues individually. Another option is go for more complex and potentially more maintaince-required water cooling.
If you are noise sensitive, I sure hope you didn't built this for gaming because is gonna get louder.

The noise numbers they sold you are for the component only, the fan, all by itself, suspended in mid air, the noise generated by the bearing, that's it. Now of course once you have mounted in the case, the motor's vibration is gonna be transmitted to the case (add noise), the pushed air is hitting the protective grill (more noise), hitting other components (more noise). So... you gotta deal with these issues individually. Another option is go for more complex and potentially more maintaince-required water cooling.
 
Solution


Hopefully the vendor has a utility where you can hit one button to put it into quiet/green mode as needed.