Slip Stream 140mm fan 1200 RPM, SM1425SL12M Discontinued
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Scythe Slip Stream 140mm fan 1200 RPM, SM1425SL12M

Replaces the Scythe Kaze Maru 140mm Cooling Fan, 1200RPM

The popular Slip Stream fan range has now been increased to include a 140mm version. After installing the new Slip Stream 140 mm fan, a wider area can be cooled compared to a 120 mm fan while keeping noise down to the minimum but maintaining a high airflow rate. The fan’s screw holes are cleverly designed so they fit 120mm fan mountings - this is due to the special rounded corners used.

Remember you can reduce the noise of this fan by using it in conjunction with a [fan controller](/?q=fan controller), like the FANAMTE2 or even a simple resistor.

Features

Massive 140mm fan for high airflow
Designed to perform
3-pin and 4-pin Molex compatible
65.2 CFM / 23.2 dBA / 1200 RPM

Review

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As everybody knows, the larger the fan, the quieter the noise as the fan doesn’t have to spin so fast to shift the airflow through it.

Scythe’s Slip Stream range of 140mm fans may just be the answer as not only do they run quieter than most standard case fans, they come in a range of varying speeds and most cleverly of all have 120mm mounting holes so you don’t even have to drill new holes to fit them.

Specifications	SM1425SL12M
Model Name	Slip Stream 140
Model Number	SM1425SL12M (1200 rpm / DC12V / 0.20A)
Dimensions	140 x 140 x 25 mm
Fan Speed	1200 (±10%)
Noise Level	23.2 dBA
Air Flow	65.2 CFM
Weight	141 g
Connector	3-Pin (4-Pin Molex Adapter included)
Bearing Type	Sleeve Bearing
MTBF	20,000 Hours
Warranty	24 months
EAN barcode	4571225045627

Specifications	SM1425SL12M
Model Name	Slip Stream 140
Model Number	SM1425SL12M (1200 rpm / DC12V / 0.20A)
Dimensions	140 x 140 x 25 mm
Fan Speed	1200 (±10%)
Noise Level	23.2 dBA
Air Flow	65.2 CFM
Weight	141 g
Connector	3-Pin (4-Pin Molex Adapter included)
Bearing Type	Sleeve Bearing
MTBF	20,000 Hours
Warranty	24 months
EAN barcode	4571225045627

Product Resources

Scythe website

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.