H100, Disconnecting Fan Header

Avier

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Hey, first off, I've recently started trying to optimize a new build of mine, and I'm using a modded case...
The problem is that the sound isolation of this case is rubbish. Even using the most silent fans I own, I can hear the fans on my H100 (not H100i) as if they were sitting on the desk next to me, which is a pain when it's idling, but my fan configuration software/BIOS doesn't seem to be capable of controlling fans running off an H100 block.

My question is... can I disconnect the fan connectors from the H100 block and run them off the CPU fan header(s) and/or a controller? The H100 block itself is connected to the CPU fan header, but I don't know if disconnecting that will cause the pump to start acting inaccordingly.

The way I see it, the H100 might be reading fan voltage off the CPU headers and acting from there, or they might have their own built-in temp gauges that control the pump all independently. If the latter is true, then I should be able to run the fans separately from the H100, right?

I've only owned this H100 for about a year now, but I still have yet to tinker too much with it. I'd just really rather play it at least a little safe when there's liquid in my computer...

If it makes any difference, my mobo is an ROG Maximus VI Formula, and my fans are all 3-pins.

EDIT: Sorry I probably should have mentioned one more detail; the real problem is that my fans are at a constant 2000-3000 RPM when they're on the H100. I want to run them off something that lets me control it more.
 

Avier

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i7Baby, as I've already stated, it's the older H100, not an H100i; which I believe has built-in Corsair Link.
Corsair Link is a separate product and service which I, sadly, do not own (yet).

Are you implying I use corsair link, or should an online version of this manual contain the information I want nonetheless?
 

Avier

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Hmmm... well, I guess I'd better break out my extension cables and magnifying glass.

As for using the case headers, they are all more or less filled. I could always get a splitter, but then I would lose the ability to configure each fan individually.

I guess I'll tinker around with different configurations for now, thanks for your help!
 

Avier

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I understand what is meant by corsair link in the manual... it just doesn't mention that it requires extra peripherals that I don't own with the H100. Only the newer i-series allow you to use link without it, I believe.

In any case, a little more research and tinkering has shown me that the pump runs fine without the 3-pin motherboard cpu connector attached. I test ran it without the connector attached entirely, and with the connector(s) replaced with fans.
Running without the block connected to the motherboard prompted a CPU fan error, but I simply ignored it and went on. The pump still ran, as did the fans. The only thing I noticed that was amiss was that I wasn't getting any RPM readings; which didn't matter much, since they were always at 2000 RPM anyways.
So naturally when I plugged the fans into the CPU headers, everything seemed to check out A-Ok. At least for now.
 
Maybe you can educate me.

Does the cpu block/pump get connected to the cpu fan header normally? I though it did.

The instructions also look like the radiator fans plug into the block?

And does the block also get any power connection too? To run the radiator fans? Or does the cpu header power everything?
 

Avier

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I can only speak for the H100, but...

The block itself has two connectors. One 3 pin fan header that's supposed to go on the CPU_FAN header. All it actually does is report RPM and subsequently prevent your PC from auto shutting down (due to "no CPU fan").
Also a 4 pin molex, which is what powers the pump itself and all the fans attached to it. As far as I can observe, the pump runs at a constant delivery, and so long as it's being powered through the molex adapter, will continue to run.

The radiator fans are meant to be plugged into the block (which can connect up to 4 fans with PWM support, allegedly), however, I have opted out of this, as the H100 seems to have a habit of idling unnecessarily high. As stated before, my CPU fans were idling at 2000 RPM off the H100, while the CPU temps were clinging to around 30 degrees celcius.

To answer your final question; the CPU connector actually seems to power nothing on my H100. Unplugging it didn't seem to change anything about its operation.