H150i elite coolant temps

[Alexein9]

Hi everyone,

 

I recently swapped my custom water cooling loop with the H150i elite rgb from corsair :

 

While playing cpu heavy games in this specific case Baldurs gate 3 my cpu temperature (i912900ks)stabilize around 60-75 degrees which im okay with, i have a little bit of concern regarding liquid temperature since icue states that is goes to 45-49 degrees and stabilize at that temperature in about 2 hours of gaming.

 

Im sitting in a room with more or less 25-28 degrees. Can i consider this temperature normal considering the heat produced from the 12900ks? I reapllied also thermal paste couple of times and nothing changes.. airflow should be good im on a corsair obsidian 1000d with a good intake. Im a bit paranoid regarding temps so maybe im overthinking it.

Also the gpu im running is a 4070ti rog strix oc so its kinda hot

 

Thank u for your answers!

[c-attack]

I’m guessing the H150i is up top as exhaust since the hoses probably don’t reach the front. 

How does the coolant temp compare to the case internal temperature?  From cpu load only, you’d only expect an increase of +4-5C for the coolant at medium fan speeds. In a warm 28C room, you likely idle around 35C H150i Temp on the desktop, so that should still be 40C or under. 

That case is so large I would not expect a lot of GPU heat to make it up top. Anything restricting the radiator like a dust filter?

Edited July 21 by c-attack

[Alexein9]

Yes its top mount due to the reason you mentioned with a pull push configuration as exhaust, 6xAF elite fans, there is a dust filter on the top of the case.

The intake consist of 8LL fans , also have 2 supplementary exhaust fans on the back of the case

I idle at around 35 degrees.

Regarding the case internal temp i dont really know how to mesure it.

Attached setup picture

[LeDoyen]

you don't need dust filters to keep the dust inside on exhaust fans, you can tae that one out, and see how the water temps look.

[Alexein9]

hi,
so small update, i've removed the dust filter on the top of the case... my temperature now under the same load as before dropped from 48-49 to 42.5, did not realize that dust filter could have such a huge impact, i still have the intake dust filter but that i'd like to keep i have a dog which brings a ton of dust in my room.

i feel like this temp is to be expected since my 12900ks outputs 250W , is it fine now in your opinion as per coolant temp?

 

thank you

[c-attack]

Yeah, that is more like it.  Are you really seeing 250W gaming loads?  Some users with high overclocks might see a peak value on some loading screen or map load with a high object count, but typically you don't sustain that kind of wattage.  A 150W average CPU output is more common, so if you are outputting a consistent 250W, you might want to figure out why.  An extra 100W would certain increase the coolant another 2-3C.

 

The glass on the 1000D is not sealed tight light some cases, but dust filter + glass + radiator is usually trouble --- even with push-pull.  As mentioned, you won't need it when running and the top glass should keep normal room circulation from accumulating too much.

 

Final component is fan speed.  Coolant delta is certainly a function of that.  I assumed medium speeds between 1000-1300 rpm when gaming.  If you are running under that, then the temps are are pretty good.  If you are running maxed out at 1800 rpm, then that is a bit puzzling still.  There is no need to be running maxed out with 6 fans.  If anything, it could pull in some GPU heat that would normally exit out the back.  

[Alexein9]

Yeah no 250w was worst case scenario i assumed its not being pulled constantly.

regarding fans i run them at balanced preset which forces them to run at 1800 rpm over 40 coolant temp, did not try to lower them, im going to make a test at 1300rpm as you mentioned to see if hot hair is being pulled in, in fact when i put my hand near the radiator i can feel a lot of warm air so i'll try that in some minutes and get back with results.

 

Thank you !

[Alexein9]

Ok, so after some further testing with fan speed

Fan speed fixed 1300 rpm -> 44.5 degree

Fan speed fixed 1500 rpm -> 43.5 degree

Fan speed balanced 1800 rpm-> 42.5

Let me know what u think,

 im not seeing any great improvment for the max speed on fans maybe some heat from gpu is being drawn in as you mentioned, still a bit colder But i think ill lower rpms just for noise.

I dont think there is much else i can do to improve temps further without playing with volt/w but id prefer not to do that. Or well if u have any other suggestions are really appreciated

Im still in a much better spot than the 48/50 degree i had earlier which made me a lot more concerned

Can this be considered a good spot to be in?

Thank you

[c-attack]

-2C of coolant temp is only -2C of CPU temp, so you should decide based on noise.  I don't see any clear trends in the data and it seems like GPU waste heat is mostly not a factor.  You can compare the coolant temp to something like the "motherboard temp" to get a general idea of case air temp. Commander Core should have one 2 prong temp sensor if you have any 10K thermistor air temp probes lying around.  

[Alexein9]

Thanks i should have those ill give it a shot, i was mainly worried to compromise my aio/pump since i was close to 50° mark and i dont know exacly how much this aio can witstand.

 

[c-attack]

60C is the AIO limit, but that's out of reach unless you have mechanical or flow issues.  It also puts you into the CPU throttle zone with random tasks, so that is the effective end.  Nothing fantastic happens at T=60C, but if you are lingering there daily you'll accelerate the coolant breakdown and be unhappy about your CPU temps.