Earlier I have talked about best slim 120mm fans for SFF cases, low profile CPU coolers and radiators in this blog. But if you want to increase the airflow further then you need a slim 140mm fan. A 140mm slim fan will generate more airflow than a slim 120mm fan and will be a bit quieter too. Also, the power consumption of both 120mm and 140mm fans are almost identical. So, if your low profile, SFF or normal PC case has enough room for a 140mm fan then it is generally better to install a 140mm slim fan in place of a slim 120mm fan.
Low profile 140mm fans are generally used in standard and slim form factor PC cases and with radiators. A regular or standard 140mm fan is 25mm thick but a slim 140mm fan is only 15mm thick and can really slide or fit in tight places. It is comparatively easier to find thin 120mm fans compared to thin 140mm fans. So, here in this post I am going to list down the best slim 140mm fans for use in low profile cases, radiators and on heatsinks.
Important Note: All the below mentioned slim 140mm fans uses 120mm mounting holes or pattern and they may not be used with 140mm mounting holes.
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Best Slim 140mm Fans [15mm Thin Fans]
Here are the best low profile 140mm fans that can be used in small form factor slim cases, radiators and may be with CPU or GPU heatsinks.
Cryorig XT140 PWM Slim 140mm Fan
Cryorig XT140 is the one of best and slimmest 140mm fan that you get in the market right now. This 140mm fan is only 13mm in thickness which is even thinner than the regular slim fans that have thickness of 15mm. This is a high performance fan that comes with Cryorig’s HPLN (High Precision Low Noise) bearing for eliminating noise and vibrations. It also has Acoustic Vibration Absorbers (available in three colors red, black, white) on corners to keep vibrations and noise to minimum levels.
This is a slim PWM fan and spins at speeds in the range of 700 to 1300 RPM. It is very quiet in operation and moves quite of bit of air with airflow of 65 CFM and has static pressure of 1.49 mmH2O. The fan has got great build quality and is best for use on radiators, computer cases and heatsinks. It can also be used as a front intake fan in regular and slim PC cases because of its good air pressure. One thing to note is that this fan comes with 120mm mounting holes and it cannot be used with 140mm mounting holes. This can be an advantage or disadvantage for some users but this may also allow you to use in computer cases, CPU Coolers or radiators that does not support 140mm mounting holes or pattern.
| Cryorig XT140 PWM System Fan Specifications | |
| Fan Size | 140mm (120mm mounting holes) |
| Bearing Type | HPLN (High Precision Low Noise) bearing |
| Fan Speed | 700 – 1300 RPM |
| Connector Type | 4-Pin PWM |
| Maximum Airflow | 65 CFM |
| Noise Level | 20 – 24 dBA |
Buy Cryorig XT140 PWM Slim 140mm Fan
Prolimatech Ultra Sleek Vortex 14 Slim Fan
Prolimatech Ultra Sleek Vortex 14 Slim Fan looks much like the above mentioned Cryorig XT140 PWM fan but it is 15mm thick and has got more fan blades (17 fan blades). This is again a good low profile 140mm fan and it comes with double ball bearing and 4-Pin PWM connector. The fan spins at relatively lesser speeds in range of 300 to 1000 RPM, and due to this it is very quiet in operation. The rated airflow is 98 CFM which I have to disagree with because of its much lower fan speed. I think the maximum airflow it can generate is around 60 CFM. The static air pressure is rated at 0.9 mm H2O at full speed which is 1000 RPM.
The build quality is decent and the fan is quite lightweight. Also, just like the Cryorig XT140 fan this fan also has 120mm mount points and it does not support 140mm mounting holes. I would not recommend this as a main fan on CPU coolers because of its lower fan speed but it is good to use with slim PC cases and radiators. It can also be used on passive GPU coolers and as an extra fan on CPU coolers. This slim 140mm fan is available in two colors which are black and white.
| Prolimatech Ultra Sleek Vortex 14 Slim Fan Specifications | |
| Fan Size | 140mm (120mm mounting holes) |
| Bearing Type | Double Ball Bearing |
| Fan Speed | 300 – 1000 RPM |
| Connector Type | 4-Pin PWM |
| Maximum Airflow | 98 CFM |
| Noise Level | 18 dBA (Max.) |
Buy Prolimatech Ultra Sleek Vortex 14 Slim Fan (Black)
Buy Prolimatech Ultra Sleek Vortex 14 Slim Fan (White)
SilverStone FW141 Slim 140mm Fan
SilverStone FW141 is a super slim 140mm fan having thickness of only 13mm. The fan comes with sleeve bearing and 4-Pin PWM connector. It has speed in the range of 800 to 1300 RPM and generates airflow of 74.6 CFM. It also offers decent amount of static pressure at 1.252mm H2O at full speed. The fan comes with blue frame and white fan blades that looks very cool.
This thin 140mm fan is on the noisier side and it uses 120mm mount holes. It can be used as a front intake fan in SFF cases or in CPU coolers and Radiators with 120mm fan mounts. Overall a decent 140mm slim fan for the price but is not a silent performer.
| SilverStone FW141 Slim 140mm Fan Specifications | |
| Fan Size | 140mm (120mm mounting holes) |
| Bearing Type | Long Life Sleeve |
| Fan Speed | 800 – 1300 RPM |
| Connector Type | 4-Pin |
| Maximum Airflow | 74.6 CFM |
| Noise Level | 34.2 dBA |
Buy SilverStone FW141 Slim 140mm Fan
Final Words
So, if you want something better than slim 120mm fans then these above mentioned slim 140mm fans are really worth trying out. They deliver better performance and costs almost the same as their 120mm counterparts. Also, they can be used on 120mm mounting points so compatibility will not be that of a major issue. If you have any doubts or queries regarding these low profile 140mm fans then please ask me by leaving a comment below.
