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ColdWing 120mm PWM Switch Performance Fan High/Low 500-2000
Discontinued
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Reeven ColdWing 120mm PWM Switch Performance Fan High/Low 500-2000

Reeven Fans - Premium quality, high performance and low noise. Introducing the ColdWing 120mm Switching PWM fan, 500 - 2000 rpm.

The Reeven philosophy is “Tools for Professionals”. The professionals never compromise in quality, performance or beauty and the new fans in the ColdWing range are no exception. Featuring an 11-blade impeller design that achieves large improvements in airflow/noise efficiency, this ColdWing 120 mm PWM fan combines outstanding quietness with excellent performance and a distinctive colour scheme.

Features

  1. PWM fan with dual speed settings
  2. Switch caps maximum RPM
  3. Starts at a low 500 RPM
  4. 27.0 dBA, 69.1 CFM at 1300 RPM - low setting
  5. 36.6 dBA, 106.7 CFM at 2000 RPM - high setting
  6. PCI bracket for manual speed adjustment

Manual PWM Speed Adjustment

For greater adjustment users can change the PWM bandwidth manually by sliding the switch on a PCI bracket. This allows the fan to be optimised for quiet operation or highest performance depending on the users preference but the PWM function is still maintained as the general feature.

The low settings limits the range of fan speeds to between 500 and 1300 RPM for quiet operation while on the high setting the speed can vary between 500 and 2000 RPM for greater airflow and increased cooling performance.

There are a range of different fan speeds to choose from within the ColdWing range which meets the demands from a wide variety of users in the market. Silent users to power users now have more choice when it comes to choosing a suitable, high quality CPU or case fan.

SpecificationsColdWing 12 PWM-SW
Model NumberRM1225S20B-PS
Dimension WxHxD (mm)120 x 120 x 25 mm
Fan Connector4-pin PWM
Rated Voltage12v
Rated Current0.52A
Fan Speed (HIGH SETTING)500 (± 250) - 2000 (± 10%) RPM
Fan Speed (LOW SETTING)500 (± 250) - 1300 (± 10%) RPM
Noise Level (HIGH SETTING)4.3 - 36.6 dBA
Noise Level (LOW SETTING)4.3 - 27.0 dBA
Air Flow (HIGH SETTING)27.6 - 106.6 CFM
Air Flow (LOW SETTING)27.6 - 69.1 CFM
Bearing TypeSleeve Bearing
Weight167g
MTBF30000hrs
Warranty24 months
EAN barcode4571225049366
SpecificationsColdWing 12 PWM-SW
Model NumberRM1225S20B-PS
Dimension WxHxD (mm)120 x 120 x 25 mm
Fan Connector4-pin PWM
Rated Voltage12v
Rated Current0.52A
Fan Speed (HIGH SETTING)500 (± 250) - 2000 (± 10%) RPM
Fan Speed (LOW SETTING)500 (± 250) - 1300 (± 10%) RPM
Noise Level (HIGH SETTING)4.3 - 36.6 dBA
Noise Level (LOW SETTING)4.3 - 27.0 dBA
Air Flow (HIGH SETTING)27.6 - 106.6 CFM
Air Flow (LOW SETTING)27.6 - 69.1 CFM
Bearing TypeSleeve Bearing
Weight167g
MTBF30000hrs
Warranty24 months
EAN barcode4571225049366

Product Resources

FAQ

  • How do I measure fan size?

    The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm. This isn’t really dictated by customer preference, but more by recent designs of PC cases.

    As for the thickness (depth) of the fan, generally 25mm (1 inch) is by far the most common depth, although smaller fans can have shallower depths such as 15mm or even 10mm. All our fans are 25mm thick unless otherwise stated. If you have any questions about which fan you should order, please don’t hesitate to get in touch.

    If you know the distance between the fan mounting screw holes but don’t know what fan size to order, please see the following table. Note that the mounting hole measurements shown below are taken horizontally or vertically between the holes and not diagonally.

    Screw hole spacings and fan sizes

    Space Between Screw Holes Fan Size
    32mm 40mm
    40mm 50mm
    50mm 60mm
    60mm 70mm
    72mm 80mm
    83mm 92mm
    105mm 120mm
  • I received a small cable (resistor) with my fan; what is it for?

    The resistor cable (also called Ultra Low Noise or ULN cable) is designed to allow the fan to run slightly slower for even quieter operation. The benefit in lower running noise is significant. Although the airflow will be reduced slightly, this usually has minimal effect on PC temperature. We would generally recommend using the ULN resistor cable for best results in almost all circumstances.

  • How can I tell which way the air blows through the fan?

    Hold the fan so that the round fan sticker is facing you. You are looking at the rear of the fan. When you plug the fan in, the air will be blowing towards you. If you want a fan to act as an air intake, then the fan sticker will be facing the inside of the case. Some fans also have two small arrows moulded into their plastic housing - one arrow shows the direction of airflow, and the other (at 90°) shows the direction of blade rotation.

  • Is it possible to use a 4-pin PWM fan or CPU cooler with a motherboard which has only 3-pin fan headers on it?

    Electrically, there is no problem doing this - the fourth pin on the fan cable is used purely for PWM control and is not needed in order for the fan to run. So you can plug the 4-pin fan connector onto the 3-pin motherboard fan header, leaving the fourth pin not connected to anything. The fan will potentially run at full speed, so if you would like to reduce the speed of the fan you will need to adjust the fan speed setting in your BIOS or use fan control software such as SpeedFan in Windows.

    The only other problem to consider is that occasionally, components immediately adjacent to the motherboard fan header can get in the way of the larger 4-pin fan connector, physically preventing connection. This problem also occurs if you try to use an in-line fan speed controller such as the one made by Gelid.

    Another avenue to explore is the possibility of using a bay-mounted fan controller. Several models are available now which provide 4-pin fan headers, so this is an easy way to use 4-pin PWM fans in a PC system which has only 3-pin fan headers on its motherboards. When using this method, you may find it necessary to disable any fan warning settings in your motherboard BIOS, since the motherboard may incorrectly believe that its CPU fan has failed when the fan is connected to a fan controller rather than directly to the motherboard itself.

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