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Completed Meshify C, 8700K - my journey to a custom loop

JD

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...but did you play Satisfactory on your Swiftech AIO? Pretty sure it's just the game 😛
 

Lysrin

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...but did you play Satisfactory on your Swiftech AIO? Pretty sure it's just the game 😛
No Sir, I did not. I think you are absolutely correct. I am going to try my other games eventually for some very scientific comparative analysis ;)
 

Lysrin

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Update here on pump noise. I finally got around to switching my PWM pump from using the water pump header on my motherboard to using a PWM chassis fan header.

On the water pump header the pump was running at over 4000 (reported in the BIOS) all the time. Although still not overly loud, it was a frequency that was very annoying. Needless to say not what I wanted from my liquid cooled, planned to be quiet, build. Regardless of what settings I tried, at least in ASUS AI Suite, I could not get it to run the pump slower or in any PWM way off that header.

However, on the chassis fan header I have been able to create profile that allows me to run the pump as I would have expected. The result is at idle, running between 20%, the pump is dead silent. It's heavenly! :) And even under load with the pump ramping up to 50% at 70C it is still a much more pleasing frequency, quiet, and has very little impact on the overall cooling. It is worse than running full out, but under load temps still stay between 70-80C.

I haven't switched my top fans to be intake rather than exhaust. I may do that but getting a screwdriver in to get those fans out with the loop now in place is no small feat.
 

sswilson

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What's full speed RPM on that pump? 4K sounds like an awful lot, and yeah... I'd imagine running it @ 20 - 30% is a major improvement over what sounds like full out... :)

I suppose it's a benefit of running so much rad for a single CPU, but I honestly don't see much temp difference between my 30(ish)% RPM and higher speeds.
 

JD

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If it's a D5 that's still powered by molex, I just leave the PWM cable not plugged in. I think that runs it at like 40%? It's quiet and works fine at all loads. At least with pastel fluids, having the pump speed too high makes it foam quite a bit and I never really liked the noise profile of the pump changing speed.
 

Lysrin

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I bought the EK-D5 PWM G2 Motor (12V DC Pump Motor) - Sleeved, iirc, and on EK's site it states:

"Default behavior: Runs at 100% duty cycle when no PWM feedback signal is present"

So that lines up with what I see. That water pump header isn't PWM it seems. I thought the 4k seemed high too. Just going by what it was reporting in the monitor from the BIOS.
 

Lysrin

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Yup, the chart for that one makes sense. Mine is the same pump, only newer, sleeved cables, etc. On the water pump header it was pegged at 100%, so 4800 rpm makes sense.

Having it on an actual PWM header, power from molex, makes it work exactly as I'd expected, and why I bought the PWM pump in the first place. It's been bugging me so I am now relieved 😁
 

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