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Advantages to three-pin vs four-pin fans - AnandTech Forums
Apr 13, 2013 · Power on the Swiftech comes from the PSU -- not from the motherboard. A single connection to either a CPU 4-pin fan header or a 4-pin "case fan" header will then supply the single signal to control up to eight PWM fans. One might say "Well, sure -- but I want to control several fans differently."
Delta fan 5 pin to 4 pin Fan Controller - AnandTech Forums
Mar 8, 2018 · A 4-pin fan HUB can solve that because it draws fan power from the PSU directly and avoids the limit of the mobo header. HOWEVER, ALL such fan HUBS require a PWM signal from a mobo header to provide CONTROL of fan speed. Normally in 4-pin fan systems this signal is merely shared out to the fans on the Hub.
Fan Controller for Silent Wings 3 - AnandTech Forums
Mar 25, 2019 · You get good cooling but no way to slow the fan down. Of you plug a 4-pin fan into a 3-pin header, the fan gets no PWM signal to use so it cannot modify current flow. BUT it receives from Pin #2 the VARYING voltage, and hence its speed IS controlled in this manner. OP needs a simple fan controller that uses only the older Voltage Control Mode.
Question USB Fan controller with 2+ amp support per head?
Apr 30, 2018 · The Hub unit will get fan power from the PSU via Molex, and the PWM control signal from a mobo header. But you cannot use a 3-pin fan like the Bgears unit with a Hub like that. IF you want to control the fan yourself as you are used to, but using a software interface rather than a front panel then the Aquacomputer OCTO unit probably will do ...
RGB fan that can be controlled by motherboard?
Jan 25, 2018 · Basically, I took the 6pin connection from each fan, split it into two parts, (1)Fan motor control and (2) addressable LED control (which is just 3 pins, 5V, Data and ground), slapped some new 3 pin JST connectors on each and bang, I'm able to control the addressable LEDs in the Aigo fans with ANYTHING that can control typical 5V, 3 pin ...
Question - Building a simple 4-pin PWM-controlled to 3-pin …
Jan 3, 2021 · Typical frequency of this is 20 to 22 kHz. So yes, it simply switches the current flow through the motor on and off. However, which way it works is important. The design of this system allows for connecting this fan to a 3-pin mobo header that is using the old Voltage Control Mode, and the 4-pin fan WILL work under controlled speed.
Question - Please advice on fan connections and ... - AnandTech …
Apr 12, 2018 · Mechanically, this connector is almost the same as the older 3-pin one, so you can always connect any 3- or 4-pin fan to any 3- or 4-pin mobo header and it will work within some limits. Electrically, the connections are similar - Ground and Speed lines are the same. Pin #2 now carries a constant +12 VDC, and Pin #4 carries the new PWM signal.
Help. Trying to control non-PWM fan speeds. - AnandTech Forums
Aug 7, 2014 · 3-pin (sometimes called DC) fan speed is controlled by voltage. The third wire (yellow) can report the RPM, but does not control it. AFAIK, you cannot mix PWM and DC fans off of the same header with a Y-adapter due to how the voltages are applied for each. There are fan controllers you can buy. 3-pin fans generally run on 12v.
Question RGB Fans Working but not lighting up - AnandTech …
Jun 23, 2004 · Fan Headers: Pro has 3 CHA_FAN headers vs. 1 on yours CPU power : Yours has 4-pin, Pro has 8-pin to allow more power for heavier CPU IF your PSU has this output USB ports : Yours has USB2 and USB 3.2 Gen1 ports, Pro has those plus additional USB3.2 Gen2 ports.
What is the difference in 3-pin vs. 2-pin fan headers?
Aug 29, 2001 · The only difference between a two and three pin connector is that the third pin (assuming that your mother board has a three-pin connection as well) allows you to monitor the fan's rotation speed. Another connection that you might see is the two/three pin header going to something that looks like the connectors on your computer's power supply.