Earlier, I talked about the best slim 120mm fans for SFF cases, low-profile CPU coolers, and radiators in this blog. However, if you want to increase the airflow further in your SFF PC Case or Radiators/CPU Heatsinks, you need a slim 140mm fan, given that your PC Case/Radiator/CPU Heatsink can support it. 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 is almost identical. So, if your low profile, SFF, or normal PC case has enough room for a 140mm fan, it is generally better to install a 140mm slim fan instead 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 slide or fit in tight places. It is comparatively easier to find thin 120mm fans compared to thin 140mm fans. So, in this post, I will list the best slim 140mm fans for use in low-profile cases, radiators, and heatsinks.
Must Read: Best RGB Fans for Building a Fancy Gaming PC
Best Slim 140mm Fans [Low Profile Fans]
Here are the best low-profile 140mm fans for small form factor slim cases, radiators, and maybe CPU or GPU heatsinks. Some of the slim 140mm fans below use 120mm mounting holes or patterns, and they cannot be used with 140mm mounting holes.
Cryorig XT140 PWM Slim 140mm Fan
Cryorig XT140 is one of the best and slimmest 140mm fans you can get on the market now. This 140mm fan is only 13mm thick, which is even thinner than the regular slim fans that have a thickness of 15mm. This high-performance fan 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, and 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 an airflow of 65 CFM, and has a static pressure of 1.49 mmH2O. The fan has 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 it in computer cases, CPU Coolers, or radiators that do not support 140mm mounting holes or patterns.
| 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 more fan blades (17 fan blades). This is, again, a good low-profile 140mm fan, and it comes with double ball bearings and a 4-pin PWM connector. The fan spins at relatively lesser speeds in the range of 300 to 1000 RPM, and due to this, it is very quiet in operation. The rated airflow is 98 CFM, which I 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 has 120mm mount points and it does not support 140mm mounting holes. I would not recommend using this as the main fan on the CPU cooler 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 with a thickness of only 13mm. The fan comes with sleeve bearing and a 4-pin PWM connector. It has a speed in the range of 800 to 1300 RPM and generates an airflow of 74.6 CFM. It also offers a decent amount of static pressure at 1.252mm H2O at full speed. The fan comes with a blue frame and white fan blades that look 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 CPU coolers and Radiators with 120mm fan mounts. Overall, it’s a decent 140mm slim fan for the price but is not a silent performer.
Check out: Top Static Pressure Fans for Radiators and heatsinks
| 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
AeroCool 140mm Streamliner Fan UV BLUE
[Supports both 120mm & 140mm mounting]
This is a pretty special slim 140mm fan because it is the only fan here that comes with both 140mm and 120mm mounting holes, and is compatible with almost all water-cooling radiators. The fan is 20mm thick and has a translucent blue body, fan blades, and four blue LED lights. It comes with sleeve bearing and a 3-pin connector. It spins at a constant speed of 1000 RPM and generates airflow of 54.7 CFM and static pressure of 0.92mm H2O, which are pretty decent figures for a lower RPM fan.
The quality of the fan is pretty decent and does provide adequate performance for most of the tasks. It is one of the silent thin 140mm fans with a maximum noise level rating of 19 dBA only. A fan adaptor comes included with it for 120mm mounting. It can be used with radiators and as a case fan. The fan is also available in silver and black color variants.
| AeroCool 140mm Streamliner Fan UV BLUE Specifications | |
| Fan Size | 140mm |
| Bearing Type | Sleeve bearing |
| Fan Speed | 1000 RPM |
| Connector Type | 3-Pin |
| Maximum Airflow | 54.7 CFM |
| Noise Level | 19.6 dBA |
Buy AeroCool 140mm Streamliner Fan UV BLUE
Buy AeroCool 140mm Streamliner Fan BLACK
Raijintek Aeolus α 140mm Slim Fan
[Only 13mm Thick, Decent Performance for the Price]
Raijintek Aeolus α is one of the thinnest 140mm fans, having a thickness of only 13mm. The fan offers good performance and can be mounted on 120mm fan holes. It may not be the best 140mm slim fan, but if you don’t have other options available, then it can do the job well in keeping the temperatures in check of your heatsink, radiator, or SFF PC Case. The fan comes with a sleeve bearing and a 4-pin PWM connector. It generates airflow of 56.55 CFM and static pressure of 1.24mmH2O. The fan’s maximum speed is 1400 RPM, and the noise level rating is 28 dBA. Practically, the fan is slightly noisier, which may be an issue for some users. Overall, a good budget slim 140mm fan that you can get if the above-mentioned better options are not available in your area.
| Raijintek Aeolus α 140mm Slim Fan Specifications | |
| Fan Size | 140mm |
| Bearing Type | Sleeve Bearing |
| Fan Speed | 1400 RPM |
| Connector Type | 4-pin PWM |
| Maximum Airflow | 56.55 CFM |
| Noise Level | 28 dBA |
Buy Raijintek Aeolus α 140mm Slim Fan
Thermaltake Luna 14 Slim LED Blue Fan
[Supports 140mm Fan Mounting Points, Quiet, LED Lighting]
Thermaltake Luna 14 Slim LED Blue is one of the rarest slim 140mm fans to support 140mm mounting points. It is also a very quiet 140mm slim fan with a thickness of 15mm and comes with blue LED lighting. It is a 140mm version of the Thermaltake Luna 12 Slim LED fan. Thermaltake Luna 14 Slim LED uses double-curved nine fan blades and has hydraulic bearings for quieter operation. The maximum speed of the fan is 1200 RPM, and it generates airflow of 38.593 CFM and static pressure of 0.703 mm-H2O. For connectivity, the fan uses a 3-pin connector. The fan uses in-mold injection anti-vibration rubber pads at four corners to reduce noise and vibrations. The maximum noise level for the fan is 23.6 dBA, which is on the quieter side. Due to the lack of a 4-pin PWM connector and lower static pressure, it is better to avoid this fan for use in CPU heatsinks and radiators. It should only be used as a chassis fan in PC cases where there is space restriction. The fan is also available in red and white colors with red/white LED lighting.
| Thermaltake Luna 14 Slim LED Blue Fan Specifications | |
| Fan Size | 140mm |
| Bearing Type | Hydraulic Bearing |
| Fan Speed | 1200 RPM |
| Connector Type | 3-pin PWM |
| Maximum Airflow | 38.593 CFM |
| Noise Level | 23.6 dBA |
Buy Thermaltake Luna 14 Slim LED Blue Fan
Arctic P14 Slim PWM PST Fan
[Good Performance, Quiet, Zero RPM Mode, 140mm mounting points]
Arctic P14 Slim PWM PST Fan is a pressure-optimized slim 140mm fan for use in radiators and heatsinks. It can also be used as a case fan in small factor builds. The fan has a thickness of 16mm and supports 140mm mounting points. The fan comes with Fluid Dynamic Bearing and uses a 4-pin PWM connector. The speed of the fan ranges from 150 to 1800 RPM and can be throttled down to a standstill (0 RPM) if the PWM signal goes below 5%. The fan generates airflow of 52 CFM and static pressure of 1.55mm H2O, which are very good figures for a 140mm slim fan. It is also a very quiet fan and has a maximum noise level rating of 22.5 dBA. Overall, it is a very good, slim 140mm fan that can also be used as a Chassis fan for both Intake and Exhaust.
| Arctic P14 Slim PWM PST Fan Specifications | |
| Fan Size | 140mm |
| Bearing Type | Fluid Dynamic Bearing |
| Fan Speed | 150 – 1800 RPM (0 rpm below 5% PWM) |
| Connector Type | 4-pin PWM |
| Maximum Airflow | 52 CFM |
| Noise Level | 0.3 Sone ~ 22.5 dBA |
Buy Arctic P14 Slim PWM PST Fan
SilverStone Air Slimmer 140 Slim Fan
[High Airflow and Static Pressure, 140mm mounting points]
SilverStone Air Slimmer 140 is a high airflow and high static pressure slim 140mm fan. The fan is only 15.5mm thick and suits systems with tight spaces or clearance. It features nine scimitar fan blades designed to enhance air pressure and achieve a high airflow rate. Each fan blade has a Shark Force fan blade pattern (resembles a shark-skin surface). This unique pattern guides the air smoothly, enhancing airflow and significantly reducing noise. The fan delivers an airflow of 82 CFM and air pressure of 2mmH2O, which are commendable figures for a slim fan. The fan speed ranges from 0 to 1700 RPM and uses an All-copper Fluid Dynamic Bearing (FDB). The noise levels of the fan is acceptable at 33 dBA at full speed. At lower speeds, the fan is relatively silent, and the anti-vibration rubber pads help to reduce the noise and vibrations. For connectivity, the fan uses a 4-pin PWM connector.
Because of its high airflow and high static pressure, the fan can be used as a PC Case fan or in Radiators and CPU Heatsinks. It uses 140mm mounting points and comes in black color. The exact model number of the fan is SST-AS140B. Overall, it is one of the best slim 140mm fans that delivers the performance of a good regular 25mm thick 140mm fan.
| SilverStone Air Slimmer 140 Slim Fan Specifications | |
| Fan Size | 140mm |
| Bearing Type | Fluid Dynamic Bearing (FDB) |
| Fan Speed | 0 – 1700 RPM |
| Connector Type | 4-pin PWM |
| Maximum Airflow | 82 CFM |
| Static Pressure | 2mm H2O |
| Noise Level | 33 dBA |
Buy SilverStone Air Slimmer 140 Slim Fan
See also:
- Best High CFM Airflow Fans for PC Case
- Best Quiet Fans for PC Cases, Radiators, and Heatsinks
- Slim AIO Liquid CPU Coolers for SFF & Mini-ITX Cases
- Best Case Fans for PC Cooling [80mm / 120mm / 140mm Fans]
- Best 92mm Fans for Computer Cases and Heatsinks
- Best 40mm / 60mm Fans for PC, 3D Printers & other devices
- Best 140mm Reverse Blade Fans for Radiator, PC Case and CPU Heatsink
Final Words
So, if you want something better than slim 120mm fans, those mentioned above slim 140mm fans are worth trying out. They deliver better performance and cost almost the same as their 120mm counterparts. If you have any doubts or queries regarding these low-profile 140mm fans, please ask me by leaving a comment below.
(*This post may contain affiliate links, which means I may receive a small commission if you choose to purchase through the links I provide (at no extra cost to you). Thank you for supporting the work I put into this site!)
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> Hi Graphiccardshub.
>
> I am trying to get a little bit of help with my build
>
> I have a Fractal design core 500 case
>
> I am going to watercool my GPU and CPU with a HW labs gts 280
> radiator,
>
> an Alphacool Eisbear Solo CPU block/resevoir/pump, some fittings and
> tubing probably from primochill
>
> https://www.primochill.com/collections/retail-tubing-3-8-x-5-8/products/primoflex-advanced-lrt-flexible-tubing-3-8in-id-x-5-8in-od-retail-bundle-10ft-pack-elegant-white
>
>
> and a fullblock for GPU from alphacool as well.
>
> My main worries are will tubing and CPU block fit with the narrow
> space and
>
> can I mount the XT140 mm fans from Cryorig in any good way in a push
> configuration on my radiator since they are only 120mm mountable.
> thinking about a bracket of somekind that will not make the fans to
> thick and will not require screws that that will eventually end up
> confliction with the radiator fins.
>
> Hope you are willing to help or maybe even put me in contact with
> someone who can
I think you will not face any problem in fitting these components, and you can use standard 140mm fans with the HW labs gts 280 radiator as Fractal design core 500 allows up to 100mm clearance for (Radiator + Fan thickness) which in your case translates to 54.6mm only (29.6mm + 25mm for fan). Just check this https://support.fractal-design.com/support/solutions/articles/4000064855-core-500-water-cooling-radiator-options