Thermal Issues, Case Migration

[Andrew213]

I have a fully built water-cooled system in a Cooler Master NR600P but unfortunately I have serious thermal issues due to the lack of radiator space and proper ventilation.

I have a Gigabyte x299 WU8 - https://www.gigabyte.com/Motherboard/X299-WU8-rev-10, and I am considering a migration to Lian Li O11 Dynamic EVO - https://lian-li.com/product/o11-dynamic-evo/ while replacing the front glass panel with the add-on mesh panel to allow 3x360 radiators (up, side and front), which in principle should be sufficient for my setup.

I navigated quickly to the PCPart Picker's System Builder to double check the compatibility but my MOBO isn't listed if the case is selected? can someone please confirm especially when I found (gigabyte x299x designare 10g) compatible and it's wider and longer than my MOBO?

Thanks for taking the time looking into this

 

[AsRock]

So your only trying to solve the issue by getting a new case ?.

 

[sneekypeet]

So your only trying to solve the issue by getting a new case ?.

Would make sense if he was planning to run a pair of 360 rads, but otherwise, not all cases are created equal when it comes to airflow.

 

[Andrew213]

I have tried everything for 2 months now, my coolant idls at 36C (with delta exceeding 18C) and under load the coolant exceeds 55C in less than 5 minutes. This is a 30 series multi-GPU setup along with Intel i9-10900K. Cooler Master NR600P allows for a single 360 rad and a single 240 rad! You can't even dual 360 rads on that case due to the front hot swap disks slot.

Note: I am glad @AsRock that you finds my problem funny, I came here for a professional advise from smart individuals, not to be mocked!

 

[AsRock]

Would make sense if he was planning to run a pair of 360 rads, but otherwise, not all cases are created equal when it comes to airflow.

Aye, no details on whats currently happening and just claiming temps are bad, more details would go a long way.

Dremal that mofo and give it the air flow that's needed haha.

EDIT:

I have tried everything for 2 months now, my coolant idls at 36C (with delta exceeding 18C) and under load the coolant exceeds 55C in less than 5 minutes. This is a 30 series multi-GPU setup along with Intel i9-10900K. Cooler Master NR600P allows for a single 360 rad and a single 240 rad!

Your complaining about CPU hitting 55c ?, while doing what ?. And is this just about the CPU how about the GPU\VRMS as it's a multi card setup ?.

More details please, then more people might be up for helping you in fixing some thing that sounds like aint broken.

 

[sneekypeet]

Aye, no details on whats currently happening and just claiming temps are bad, more details would go a long way.

Dremal that mofo and give it the air flow that's needed haha.

Cant argue if the dremel in in hand, but it is like half the cost of a case just for the tool.

@Andrew213 I fail to see the issue if its all in the same loop

 

[Andrew213]

I never mentioned any components temps, really don't know where you got CPU hitting 55C, I was explicitly talking about the coolant temperature which is boiling.

Both GPUs are throttling, core exceeding 65C, VRAM exceeding 115C.
CPU temperatures aren't looking good neither 80C+ on almost all cores.

I modded the case with dual side panel 120 fans as intake then later exhaust, temps on GPUs VRAM decreased by 3C and 1-2C respectively.

I use this computer for work, mostly rendering with AutoCAD, Revit, 3D MAX and Maya.

The case has a total of 5 radiator mounted fans, 2 on the front 240 rad as intake, 3 at the 360 rad top as exhaust.
single rear mounted fan as exhaust and 2 moded filtered side panel fans as intake.

Both GPUs and CPU are underwater! and since I built this workstation I had zero successful renders as I have a rule that says (if coolant temp exceeds 55C shut down) to prevent tubes deformation and pump damage. Temperatures creep up extremely quickly on all hardware and coolant which trips this rule in less than 5 minutes.

 

[eidairaman1]

Whats the room temperature, you need to purge the loops of air bubbles or find out if a pump is bad. Check to ensure you are not flexing boards.

 

[joemama]

Both GPUs are throttling, core exceeding 65C, VRAM exceeding 115C.
CPU temperatures aren't looking good neither 80C+ on almost all cores.

65C is really not a high temperature for the GPU, you should check your cooling on the VRAM area because that might be the reason its throttling.
Since you're seeing the coolant heat up, the issue should be the heat dissipation, I would recommend to check 1. If the pump is properly pushing the coolant through the loop 2. If there are large volumes of air in the loop (and also how the radiators are installed) 3. If there are enough air flow through the radiators

 

[maxfly]

It sounds like you may benefit from mounting your rads externally. Try something similar to a mora rad stand to mount all 3 of your 360s outside of your case rather than trying to house them all inside. Otherwise your looking at a server class case like a Corsair 900d or the like.

 

[Fangio1951]

hi m8 - some pics of your setup would go a LONG way for people to help you

 

[nguyen]

I never mentioned any components temps, really don't know where you got CPU hitting 55C, I was explicitly talking about the coolant temperature which is boiling.

Both GPUs are throttling, core exceeding 65C, VRAM exceeding 115C.
CPU temperatures aren't looking good neither 80C+ on almost all cores.

I modded the case with dual side panel 120 fans as intake then later exhaust, temps on GPUs VRAM decreased by 3C and 1-2C respectively.

I use this computer for work, mostly rendering with AutoCAD, Revit, 3D MAX and Maya.

The case has a total of 5 radiator mounted fans, 2 on the front 240 rad as intake, 3 at the 360 rad top as exhaust.
single rear mounted fan as exhaust and 2 moded filtered side panel fans as intake.

Both GPUs and CPU are underwater! and since I built this workstation I had zero successful renders as I have a rule that says (if coolant temp exceeds 55C shut down) to prevent tubes deformation and pump damage. Temperatures creep up extremely quickly on all hardware and coolant which trips this rule in less than 5 minutes.

You should keep coolant temp below 50C if you want your pump to live a long life that is, even though the spec for most pumps say max coolant temp is 60C.

What is your pump and radiator fans? If you are using a D5 pump it might not have enough head pressure to push water through 2 radiators and 3 Waterblocks (DDC might be better choice here), D5 vs DDC Pump is explained here

As for radiator fans, use high static pressure fans and not case fans, here are best ones to use on radiator, Check out TPU Review for more info

 

[Andrew213]

The pump is barley used and it works fine as per the flow indicator, it's a D5 pump and I am using Corsair's QL120, the loop is completely bleed and I don't want to have external rads, additionally I have 2 coolant sensors, one inline before the coolant enter the rads and another after the it exits the rads, delta there is 7C.

Do you guys think that a single 360 and 240 rads are sufficient for 2 OCed 3090 and OCed 10900K because this looks like a heat dissipation issue to me?

 

[nguyen]

The pump is barley used and it works fine as per the flow indicator, it's a D5 pump and I am using Corsair's QL120, the loop is completely bleed and I don't want to have external rads, additionally I have 2 coolant sensors, one inline before the coolant enter the rads and another after the it exits the rads, delta there is 7C

Well there are your problem, Corsair QL fans are the bottom performing fans there.

7C difference between entering and exiting water through the Rad means the water flow is very very slow, typically it should only be 1-1.5C, try running your pump at max speed

I have 9900K + 3090, 2x 360mm rads with 6x Noctua NF-A12x25 fans, delta temp between Ambient and Coolant during max load is ~12C

 

[Andrew213]

I did try running the pump and fans at max speed and you are correct, the delta changes to 2C but again it doesn't solve the boiling coolant problem which keeps creeping up extremely quickly passing 55C triggering a shutdown.

 

[nguyen]

I did try running the pump at max speed and you are correct, the delta changes to 2C but again it doesn't solve the boiling coolant problem which keeps creeping up extremely quickly passing 55C triggering a shutdown.

Run you pump at max speed and replace your radiator fans (also run them at max speed too), it would make a big difference.

Oh and run the AirCon too, 2x 3090 and the 10900K can output ~1000W of heat which can warm up your room fairly quickly

 

[Andrew213]

I have some old Noctua NF-P12 fans, almost replaced all the exisiting fans, will test and report shortly.

Result:

QL120 were replaced with NF-P12, tested pump and fans at 100% while disabling the shutdown rule. Additionally, I have removed all dust filters on the intake fans.
I have tried rendering a scene and coolant temperature hit 62C and going up before I manually shutdown the computer.

GPUz reported GPU VRAM temps of 115C+ on both cards with GPU core of 80C+ and CPU cores averaging 85C+

Note: in regards to AirCon, I was able to control the coolant (lower 50 C) and components temps but it needs to be on 16C which can become quite chilly and expensive to maintain.

 

[nguyen]

I have some old Noctua NF-P12 fans, almost replaced all the exisiting fans, will test and report shortly.

Result:

QL120 were replaced with NF-P12, tested pump and fans at 100% while disabling the shutdown rule. Additionally, I have removed all dust filters on the intake fans.
I have tried rendering a scene and coolant temperature hit 62C and going up before I manually shutdown the computer.

GPUz reported GPU VRAM temps of 115C+ on both cards with GPU core of 80C+ and CPU cores averaging 85C+

Yeah try undervolting your 3090s and 10900K, use MSI Afterburner to set the 3090s Power Limit to 70% (core clock +150Mhz to offset the performance loss), set 10900K to 4.7Ghz all-cores 1.15Vcore

 

[maxfly]

What rads are you using Andrew213?

 

[Andrew213]

I will try this now for the sake of the experiment but I want to highlight that both GPU cards and the CPU are optimised and slightly OCed for compatibility and performance with my work programs, undervolting here will impact performance as it will render my current profiles unstable.

@maxfly I am using Corsair's XR5 240 and 360, unfortunately can't go with thicker rads due to clearance issues.

Result:

I undervolted as suggested and now the GPUs VRAM ranging between 90-100C with a core temp around 70C, CPU cores around 75C.
The NF-P12 are pushing hot air inside the case through the front 240 rad which is noticeable now via the case's heat prob, 8C+ difference with QL120.
The coolant temp is still creeping up and exceeded 60C before I manually shutdown, not as fast but it doesn't stabilise and seems will easily hit 70C if I didn't manually intervene.

 

[maxfly]

I will try this now for the sake of the experiment but I want to highlight that both GPU cards and the CPU are optimised and slightly OCed for compatibility and performance with my work programs, undervolting here will impact performance as it will render my current profiles unstable.

@maxfly I am using Corsair's XR5 240 and 360, unfortunately can't go with thicker rads due to clearance issues.

Those are hardwarelabs L series that Corsair uses. They are good rads but need really high h20 fans to shine. Your loop is to put it simply, severely over saturated. You need more capacity. At least twice what you have currently(if you stay with xr5s). Ideally for your loop, I would suggest running 3x hwlabs gtx 360s, ek 360xes, alphacool ut60 360s or something similar. You could probably get by with another xr5 360 along with your 240/360 but you would need high h20 fans and you would likely have to run them at very high speeds due to their high fin count. Which is what makes them such good rads.

 

[Andrew213]

I totally agree ^^ but this case is very jammed ATM, restrictive with no place for any rad expansion whatsoever.

I am aware that my MOBO is SSI-CEB and I was wondering whether Lian Li O11 Dynamic EVO case is compatible - please refer to my first post.

My plan is to have at-least 3x360 XR5 but will try to push for 60MM 360 rads as per the clearance and if applicable. Additionally, do you think a single XD5 pump could push through 3x360 rads and exisiting loop, I don't mind running the pump at 100%

 

[maxfly]

Being that the Evos max mb size listed is eatx. I don't think your mb will fit even tho its only an inch or so bigger. It looks as if you will run into the rad/fan mount in the side. That's why I mentioned the server class case.
The xd5 pump... I hate to be the bearer of bad news. I don't have any idea why Corsair did this but they specifically designed their version as basically a 1/2 powered version of the normal laing,xylem,lowara d5. The lph is only 800 and head pressure is only 2.1 vs 1500 and 3.9 of an original d5. So no I don't think one of them would do the job with 3x360s 2 gpu blocks and a cpu block. Tbh I wouldn't pair them up either due to such poor performance. You would need either at minimum an original d5 or ideally a swiftech mcp50 or mcp35x

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Personally anything mission critical I always require dual pumps for redundancy. Whether ddc variants or d5s.

 

[Andrew213]

Thanks @maxfly for your comprehensive and detailed response, really appreciate it.

You are right, Lian Li recommends a MOBO max width of 280mm and my MOBO is 300mm so yeah, 2cm.

Although (gigabyte x299x designare 10g) is compatible with EVO and it's wider and longer than my MOBO do you have any idea why?

I really like this case, low profile, neat, sufficient rad space and good airflow, customizable and most importantly not ugly nor looks like a space shuttle or a car.

 

[Chrispy_]

I was cooling a 2070S and 3900X last year using 1x360 and 1x140 radiator (Alphacool) and found that although it was running fine it probably could have done with more radiator.

Rule of thumb for my next build will be 120mm of standard-thickness radiator per 75W of peak load and that's based on the fact that a radiator is magic, it must obey the same laws of physics as a slim 120mm tower CPU cooler would. Yes, a slim 120mm tower can cool a 105 or 125W CPU without issue, but that's allowing the temperature of the CPU to hit 80C+ If you wanted that tower to run at 55C (so only 30C over ambient) you'd need to drop the CPU down to a 65W TDP, most likely.

In your scenario, you have a pair of 350W GPUs and a CPU with a 250W PL2. You need 950W of heat dissipation and by my rule of thumb above that means you should be looking at 12x120mm of radiator, or 6x120mm of double-thickness radiator - so realistically you need two 360mm x 50mm radiators, in order to keep your temperatures where you want them.