Be Quiet! 140mm SW1 Case Fan Review

Be Quiet! 140mm SW1 Case Fan Review


So this is the follow up to my review of my Be Quiet 120mm Case fan, of which you can find the link here. These fans are even quieter than the 120mm counterpart as the fans only go up to 1000rpm. This means that that the same amount of air is going to be moved, as the fan is bigger, but the RPM doesn’t need to be as high, as the blades have more surface area. This results in even more silencing for your PC. If you don’t mind paying a bit more for these, then they are a must.

Performance And Experience

The fan is right on display when you open the box as you can see from the pictures below, and the rivets for installation come in the top and bottom halves of the box. Be Quiet! were so confident with their picture at the back of the box will help any user install this product into their case.

Installation was done in less than 2 minutes. Simply put the washer on top of the pre installed screw holes from your case, and insert the rivet into the case fan.  In regard to controlling the fans, that’s where this product shines. You can control the speed of this fan using you motherboard’s bios or by using SpeedFan.

The range is from 250rpm -1000rpm.  At the lowest setting, you have to put your ear next to your case to be able to perceive the sound, which is really impressive, somehow more so than the previous smaller version I reviewed. At full RPM, they are significantly quieter than the 120mm counterparts at just 18dB.

Availability And Specs

This is currently off Amazon for a premium £14 and isn’t available in the US from Amazon, and I also couldn’t find any other link on the Web for the US.

Amazon (UK Only):

Specs can be found below:

Air flow @ 12V (cfm, m3/h)
Air pressure @ 12V (mm H2O)
Noise level @ 12V (dB(A))
60.4 / 101.9
Product Dimensions 14 x 14 x 2.5 cm
Wattage 1 watt
Max RPM 1000rpm


Pros And Cons

In terms of the pros and cons, i have the same criticisms as in my other review:


  • Really quiet operation
  • Premium quality
  • Screwless mounting
  • PWM controlled
  • Larger surface area


  • Very pricey for a fan
  • The range of RPM could be higher


Definitely go for these fans instead of the 120mm case fans if your case supports it, which most new cases do (2013-). You get the added benefit of more surface area for cooling performance, meanwhile keeping the fan speed nice and low, which is great. However, like with the other set(120mm), I do wish that they weren’t so expensive. If you can’t justify the price, you may give up some quality, but the temperatures will remain relatively the same.


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