pwm fan splitter
- Thread starter kale007
- Start date
No. Non pwm fans that are controlled by the motherboard are controlled by voltage. As you will be using a pwm fan splitter with molex, the fan splitter will provide the full 12v to the fans running them at full speed. It will also try to send along the pwm signal telling them to slow down but this will of course fail, as they aren't pwm fans, and they will continue to run at full speed. If you post exactly what you have and what you are trying to do, we can more than likely tell you how to do it.
Well you didn't say exactly what you have, but you can most likely control them all directly by fan headers. Those fans draw something like 2.5 watts, so you should be able to put two on each case fan header. Most decent motherboards have 3 case fan headers (at least) so you should be all set. Purchase 3 fan splitters (3 or 4 pin, doesn't matter which but make sure they do NOT supply power directly from the PSU) and you should be fine.
The other option of course is a fan controller but then you would be controlling them manually.
Well you can put as many as you want on one fan header but remember they are drawing their current from the motherboard. Draw too much current, and you will burn out the fan header. Two is safe for sure. You can probably do more but you will want to look up whatever motherboard you have, see what the fan headers are rated for. Typically, it is something around 10-12 watts, or around one amp. Then see what your fans are rated for, and do the math. You can convert amps to watts using the formula amps*voltage=watts.
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