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murakume

Newbie

Questions About Air Temperature Placement

Saturday, May 10th 2025, 7:47am

Hello everyone. I've got two open spots for temp sensors on my Octo and one on my motherboard and was thinking the best way to go would be to grab intake, exhaust, and case ambient somewhere. Open to suggestions there keeping in mind I have three sensor spots. I could get two more if I wanted to hunt down the tiny connector style that works with high flow next sensors and get them to the US, but five total seems like a lot in an already "a lot" build.

Next is how would one attach the intake and exhaust? I'm push in the front and pull out the top.

Case is a Corsair 9000D with two Alphacool xt45 400mm radiators that have two 200mm Noctua Chromax fans each and 120mm Noctua Chromax fans filling the back and side. The front, side, and rear are intake and the top is exhaust in hopes of trying to get this near positive pressure. The loop order is GPU, CPU, rad, rad; and I have a temp sensor going into GPU, a high flow next inbetween CPU and first rad, and finally the second high flow next after the radiators before the pump. The loop is likely to get re-done as much as I really don't want to move this thing around as I mistakenly wasted a water temp sensor directly before the second high flow next, but the actual order won't change.

Thanks for any help.

SgtSixpack

Junior Member

Saturday, May 10th 2025, 11:24pm

I would try to get a sensor poking outside of the case for ambient temperature if you can. Nice to see another Noctua fan (pun not intended). I've got two water temp sensors, one high flow next at one side of the gpu+ cpu block and an aquacomputer sensor at the end of the radiators/before cpu block. This way I can calculate power dissipated.

I could not find the motherboard air sensor when I connected it last, so many temperature sensors it just gets lost.

murakume

Newbie

Sunday, May 11th 2025, 5:23am

The noctuas were the best bet for 200mm compatibility and at that point I stuck with them for the rest lol. The are definitely good fans though. The 120mm ones can be heard at full tilt but the 200mm fans are mouse fart territory.

Speaking of power dissipated I thought I had seen someone on here talking about that while lurking. Is that done through a virtual sensor function?

SgtSixpack

Junior Member

Monday, May 12th 2025, 1:15pm

murakume

Newbie

Monday, May 12th 2025, 5:39pm

Thank you! I had dug around some after replying and found one to import, but your post of the ethylene glycol specific heat was useful since I'm using DP Ultra. I was using the value for straight distilled water; it's close but nice to know.

I'm still waiting on the two temperature sensors to come in and I've also bought a plain utilitube reservoir lid. I'm running a leakshield right now, but it's kinda driving me nuts. The usual fill level detection seemingly way off, but I do suspect there to be air in my system still just from the size and likely how I have the radiator in the front. I'm going to throw the non-membrane lid on and move the system around to see if I can work anything out of it. For now though the leakshield is just going to sit in "release". I also have a couple spare membranes coming, but it'll be a while.

I have played around quite a bit with the datalogging and charting features now. This is cool stuff lol. I've logged and charted CPU, GPU, water into loop, out of loop, and out of rads, along with pump flow to see what pump setting does what.

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