- #1
I'm about to ascent both parts on my PC, especially the temperature reduction/randomness reduction.
I'm gonna buy a Fractal Define S, which has 2x 140mm 3-pin fans, I also have 2x 140mm 3-pin fans AND 4x 140mm 4-peg PWM fans laying around.
So in that location are 4x 3-pin and 4x 4-pin fans. Since no MoBo has so many connectors I bought a Lamptron SP105 adapter. It sais in its description that it can drive 3-pin fans, kinda frank I think. But what isn't stated anywhere is if information technology can also controll the belt along of said 3-pin fans. In my understanding, that is not so obvious. 3-stick fans are controlled via voltage altering, and since the adapter is SATA/MOLEX-powered, I seize that the VCC happening the 4-pin headers of the adapter are fixed to 12V, that of course would mean that the 3-pin fans would run at 100%.
If the adapter is designed a trifle smartish, it would alter the VCC reported to the PWM-input from the MoBo, merely on the pictures I can't find out any kinda IC or so much that could be accounted for that...
Has anyone an educated guess operating room first-hand experience on the Lamptron adapter? Can't find much information approximately it...
Any facilitate is desired.
Cheers, Leic
- Oct 19, 2006
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- #2
HOWEVER, almost is not all. In that respect is one unit called the Phanteks PWM Hub that can do exactly A you wish. Like past Hubs IT connects to a PSU power output for fan power, and to a mobo fan header that MUST be victimization the revolutionary PWM Mode so IT can get the PWM control point. But it is assorted therein it does convert from the PWM Mode to the elder 3-immobilize Voltage Control Mode for altogether its eight outputs. Its max load specs are 1A (12 W) max per output larboard, but 2.5 A (30W) max in total. All output ports are 3-pin.
3-pin fans can have got their speeding regimented only when away the older Voltage Mastery Modality. 4-pivot fans are outflank controlled using the young PWM Modal value, but they CAN glucinium controlled also by the experient Mode because they were fashioned with this backwards compatibility feature. Just in that location is a small problem using 4-bowling pin fans with this Hub. The spacing of the outturn ports does not really provide the wider connector of a 4-bowling pin fan to fit on. Only there's an easy solution to that, too. The Hub comes with cardinal small Splitters to allow you to relate cardinal fans for each one on a couple of its outputs. You can employment those to connect two of your 4-pin fans to for each one of two Hub ports, so information technology whole caboodle!
A mobo header lavatory deal with a speed pulse indicate coming spine to it from only if ONE fan. So this Hub, like all others, will base back to the host header the speed of alone the fan plugged into its WHITE port wine #1, and ignore all the others. That's what it should do. This has no effect on velocity control. But it does mean that your system cannot monitoring device the speeds of ALL your fans for FAILURE. So from time to time YOU must check that all the fans are still working.
I recommend you do Non do one of the pedagogy details with this unit of measurement. Its instructions say to connect the Hub to the CPU_FAN header, and then to connect the actual C.P.U. cooler to the white Port #1. That is for one reason only - connected some earlier mobos the only rooter header that you could depend on to use the new PWM Mode of control was that CPU_FAN header. Just now nigh mobo SYS_FAN or CHA_FAN headers can be configured to use either PWM Musical mode operating room Potential difference Control Mode (aka DC Mode). So you should plug the Hub into matchless of those, and NOT connect your CPU ice chest to the Hub. Fair-minded connect that cooler to the CPU_FAN header of the mobo. Then be sure to colligate one fan to the colourless port #1 so it does get a speed signal to return to the host header. Past be predestined that the SYS_FAN or CHA_FAN header you are uisng is set to utilize PWM Mode. Too assert in BIOS Setup that the guide for the eccentric fans connected to the header is the temperature sensor on the mobo, and non the single inside the CPU chip.
Sol that can suffice what you need. But we deliver non up to now dealt with how to do this without that fussy Hub. You have not told us what mobo you have, and we deman that maker and exact posture routine to see whether there is an easy response. Since many mobos practice allow you to specify the Fashion of control each header uses, you may be able to configure to keep in line the 3-stick fans from one header jell to DC Mode, and the 4-pin fans from another set to PWM Fashion. IF you prat ut that, you may equal able to do it with SPLITTERS, sooner than a Hub. A Splitter is a simpler (and cheaper) device that merely connects all its fans in parallel to one header. But that means that every the exponent for that rooter group must come from the header, and the header normally is limited to a max 1.0 A current flow. So you need to get the max current consumption specs for wholly your fans, and add up all the fans in one proposed group to see if they all toilet be connected to one cope within that limit. Since almost all Hubs (except the Phanteks PWM Hub as above) spread out power and control signals to their fans only in PWM Mode, they can NOT control the speeds of 3-PIN number fans. Thus, a Splitter and a rooter coping that uses DC Mode is the common way to control a group of 3-pin fans. To tell the remainder between Splitter and Hub, note that a Hub MUST have an weapon that plugs into a force end product from the PSU, whereas a Splitter has nobelium much connecting cable. Act up NOT rely happening the "name" of the device you consider - sellers often confuse the use of "Divider" and "Hub". Although the most commons Splitters induce two outputs, you can find ones with many.
So, feed us your mobo specs and we can facilitate advise on those simpler possibilities.
- Oct 19, 2006
- 9,861
- 613
- 57,240
- 2,284
- #2
HOWEVER, almost is non complete. In that location is one unit called the Phanteks PWM Hub that dismiss arrange on the dot as you wish. Like other Hubs it connects to a PSU power output for sports fan power, and to a mobo sports fan header that MUST exist using the new PWM Mode so it can get the PWM control signal. But it is antithetic therein it does commute from the PWM Modal value to the older 3-pin Electromotive force Restraint Mode for all its eight outputs. Its soap load specs are 1A (12 W) max per production larboard, just 2.5 A (30W) max in total. All output ports are 3-pin.
3-pin fans john have their speed controlled only by the older Voltage Control Mode. 4-pin fans are second-best regimented using the new PWM Mode, but they CAN be controlled besides by the experienced Mood because they were designed with this backwards compatibility feature. But at that place is a midget problem victimization 4-flag fans with this Hub. The spacing of the output ports does not really allow the wider connector of a 4-pin fan to acceptable happening. But there's an easy solution to that, too. The Hub comes with two small Splitters to allow you to connect two fans apiece on a few its outputs. You can use those to connect cardinal of your 4-pin fans to each of deuce Hub ports, and then it works!
A mobo header throne dole out with a speed pulse signalise orgasm back to IT from only Uncomparable fan. So this Hub, like completely others, will send back to the host header the speed of only the fan obstructed into its WHITE port #1, and disregard all the others. That's what it should do. This has no effect on speed control. But it does imply that your system cannot monitor the speeds of Every last your fans for FAILURE. So from time to time YOU essential determine that all the fans are still working.
I advocate you do NOT suffice one of the instruction details with this building block. Its instructions say to connect the Hub to the CPU_FAN heading, and past to connect the actual CPU cooler to the white Interface #1. That is for one reason merely - on some earlier mobos the single fan header that you could rely on to use the new PWM Mode of control was that CPU_FAN header. But nowadays near mobo SYS_FAN or CHA_FAN headers can be designed to utilize either PWM Mode OR Voltage Control Manner (aka Direct current Mode). So you should plug the Hub into one of those, and Non connect your Central processor cooler to the Hub. Honorable link up that cooler to the CPU_FAN header of the mobo. Then make up sure to connect one fan to the white porthole #1 so it does get a speed signal to return to the host lintel. Then be sure that the SYS_FAN operating room CHA_FAN header you are uisng is set to role PWM Mode. Also verify in BIOS Setup that the guide for the case fans connected to the header is the temperature sensor on the mobo, and non the same inside the CPU chip.
So that can do what you need. But we have not yet dealt with how to do this without that particular Hub. You stimulate not told us what mobo you have, and we need that maker and exact fashion mode act to see whether there is an available resolve. Since many mobos do allow you to specify the Mode of control each header uses, you may be able to configure to see the 3-pin fans from unmatchable header set to DC Mode, and the 4-pin fans from another set to PWM Way. IF you behind do that, you may be able to jazz with SPLITTERS, rather than a Hub. A Splitter is a simpler (and cheaper) device that simply connects all its fans in parallel to one header. But that agency that altogether the power for that sports fan chemical group must come from the header, and the header normally is limited to a max 1.0 A current flow. So you need to get the max contemporary consumption specs for entirely your fans, and add up all the fans in one proposed group to see if they all can be connected to one header within that limit. Since almost all Hubs (demur the Phanteks PWM Hub every bit above) distribute power and control signals to their fans only in PWM Mode, they stool Non control the speeds of 3-pin fans. Thus, a Splitter and a fan header that uses D.C. Modality is the common way to ascertain a group of 3-pin fans. To tell the difference between Splitter and Hub, bank bill that a Hub MUST have an arm that plugs into a power output from the PSU, whereas a Splitter has no such connecting cable. Do NOT depend on the "name" of the device you consider - sellers often confuse the use of "Rail-splitter" and "Hub". Although the most common Splitters have two outputs, you derriere find ones with much.
And so, give United States your mobo specs and we can facilitate advise on those simpler possibilities.
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Case Fan 3-pin to 4-pin Converter for Pwm
Source: https://forums.tomshardware.com/threads/3-pin-fans-on-4-pin-pwm-controlled-adapter.3541834/