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TravisBickle |
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TravisBickle World Chat Champion
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UncleFester |
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UncleFester World Chat Champion
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Posted: 06:50 - 27 May 2021 Post subject: |
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40 is quite warm at idle. I wonder if you've got a fooked CPU or a knackered cooler.
I'd be expecting high 20s / very low 30s at idle and a max of 75/80 under load. Stress tests will send it higher but you shouldn't be running anything in normal operation that hits it that hard.
If it's cooking the paste into crust then either too much paste / not making good connection with cooler base or cooler simply isn't taking the heat away effectively.
What cooler are you using? *AIO 360
https://forum.corsair.com/forums/showthread.php?t=190710
I'd say still too high. ____________________ Module 1 and 2 passed - October 2014. Happy owner of a 2017 Z1000SX, ex owner of a YBR125 / CB500 / VFR800. |
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xX-Alex-Xx |
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xX-Alex-Xx World Chat Champion
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Posted: 17:41 - 27 May 2021 Post subject: |
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My 9900K is 18 degrees, idle on a Z390 board also, but under water.
https://www.bikechatforums.com/files/cpu_158.png
Under load (well, running Destiny 2 at max@1440p whilst streaming)
https://www.bikechatforums.com/files/cpuwarm.png
Its gonna be a cooling/airflow issue, or a fucked CPU... likely the former, make sure your BIOS max speeds the AIO if you are running one, don't let it be smart, just full send, every time.
Before I changed to full water, I used to see 60+, running it full time at 60 would be fine, but that is too warm for me.
Check airflow, should really leave from the back and top, drawin from bottom and front, but your case may have specifics. |
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Fat Angry Scotsman |
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Fat Angry Scotsman World Chat Champion
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Easy-X |
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Easy-X Super Spammer
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Posted: 22:43 - 27 May 2021 Post subject: |
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So you went from a 9600K with a TDP of 95 Watts to a 9900KS with a TDP of 127 Watts.... hmmm..... How old is this cooling system? Sealed systems don't last forever. I mention this as the thermal compound does go crumbly but it takes a while.
When you're at the white-hot end of PC performance you have to take a bit more care with all the variables. Have you got the cooler pump on a fixed 12V output and the fans on mobo-control? Did you clean the CPU and heatsink surfaces adequately? Are you using decent thermal compound and not something that's been sat in the back of a drawer for 5 years... etc. ____________________ Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter |
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 23:30 - 27 May 2021 Post subject: |
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Paddy. wrote: | My 9900K is 18 degrees, idle on a Z390 board also, but under water. |
What's your room temperature? 18°C, I presume, as you can't cool stuff under the ambient temperature without refrigeration.
Anyway, OP, a desktop PC should not thermal throttle. There's either something wrong or the CPU cooler is insufficient.
You say you use a AIO cooler, is the pump working/plugged in properly? It does sound like the pump is not moving the coolant around. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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TravisBickle |
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TravisBickle World Chat Champion
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Posted: 03:40 - 29 May 2021 Post subject: |
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Thank you all for you input and helpful comments. Sorry I didn't want to seem ungrateful by not responding but it's been a manic few days at work!
UncleBFester wrote: | If it's cooking the paste into crust then either too much paste / not making good connection with cooler base or cooler simply isn't taking the heat away effectively. |
I'm gonna have to disagree with you there. The temps were acceptable before I swapped the CPUs, so the issue about the thermal compound being crusty certainly wasn't causing any major problems before. It's only now I've cleaned everything up and reapplied normal paste I'm getting the problems. Adding too much paste wouldn't cause it to overheat from what I've seen on YouTube, it simply splurges out the side.
xX-Alex-Xx wrote: | How's the airflow through the case? Same number of fans blowing out as there are pulling in?
Other thing could be it's not tensioned equally across the heatspreader on the CPU. Stupid question = the pump for the cooler is connected and working? |
Case airflow is excellent, it's a Corsair 750D airflow edition with 10x ML case fans fitted (5 intake, 5 exhaust). I have to be honest my first thought was the same as you and maybe the coldplate of the cooler wasn't making good contact as the temps would ramp up instantly the second you put it under load. If it were a fan related issue surely the temp would gradually climb over time. So my thoughts were with the coldplate not disapating from the IHS, which turned out to be true but for different reasons, more on that later...
Paddy. wrote: | Its gonna be a cooling/airflow issue, or a fucked CPU... likely the former, make sure your BIOS max speeds the AIO if you are running one, don't let it be smart, just full send, every time. |
Yep done that. I reset the BIOS settings back to default and put all fans on max. No change! Temp still spikes from 40c to 100c almost instantly when initiating a load pointing at the cooler coldplate. I later found out though that the pump speed is not controlled by the PWM headers. More on that later...
Fat Angry Scotsman wrote: | TravisBickle wrote: | Stuff |
May be a bit of a redundant question, but when you reinstalled your AIO did you reverse the fan orientation by mistake and maybe it's that your PC is now trying to constantly recycle it's own hot air that is the problem? |
Nope, everything went back as it was before. Only difference was I swapped my old fan hub for one that can accept more fans than the old one but wired them all in the same way as before and fan orientation was unchanged.
Easy-X wrote: | So you went from a 9600K with a TDP of 95 Watts to a 9900KS with a TDP of 127 Watts.... hmmm..... How old is this cooling system? Sealed systems don't last forever. I mention this as the thermal compound does go crumbly but it takes a while.
When you're at the white-hot end of PC performance you have to take a bit more care with all the variables. Have you got the cooler pump on a fixed 12V output and the fans on mobo-control? Did you clean the CPU and heatsink surfaces adequately? Are you using decent thermal compound and not something that's been sat in the back of a drawer for 5 years... etc. |
I take your point. There's a good 30% increase in heat output there huh? Having said that the Corsair H150i Pro 360mm AIO should be more than sufficient to cope with even this processor. It's around 18 months to 2 years old now and was installed with liquid metal thermal compound on the IHS (not de-lidded). I knew it was overkill for a 9600K at the time but I think I knew I'd eventually upgrade the CPU at a later date so went with something that could cope with a larger thermal output. I cleaned the IHS thoroughly with IPA. I tried to do the same on the the surface of the cooler but it had to be ground down and re-buffed/polished as it had gone crusty as fuck. From what I can tell though it wasn't the thermal compound that had gone crusty. I mean that had all dried up (for some reason I was still expecting the liquid metal to still be liquid! I wasn't expecting it to be dry). But the cooler coldplate is copper, the IHS on the CPU is aluminium and god knows what metals are used in the liquid metal compound. From what I can tell it was a chemical reaction that has eaten into the surface of the coldplate and corroded/oxidised, it was very hard to remove the cooler from the IHS it's almost like it was welded onto it. Took some brute force to seperate them from one another. That's why it wouldn't come clean with simple elbow grease. Thank god I had my Dremel to hand. Thermal compound I used was from what research I done when I bought it a couple of years ago was the best on the market at the time (best thermal conductivity without going liquid metal) but yeah to be honest it has sat for 2 years unused but it seemed to spread ok when I applied it to the CPU so I'm thinking that's probably ok. ____________________ 2007 Yamaha FZ1 S Fazer
2021 Honda CMX500 Rebel S
2016 Triumph Tiger 1050 Sport |
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TravisBickle |
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TravisBickle World Chat Champion
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xX-Alex-Xx |
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xX-Alex-Xx World Chat Champion
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Easy-X |
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Easy-X Super Spammer
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Posted: 10:51 - 29 May 2021 Post subject: |
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With regards to case / fan designage (? is that a word ?) back in the day one would have case fans drawing air in and/or blowing it out. CPU & GPU fans would just be internal and merely recycle the air in the case.
The issue now is that rad fans are doing double-duty as case and CPU fans. So your CPU is hot? Ramp the CPU fan speed up, easy. Okay but what if the system temperature is hot from the GPU (assuming you haven't water cooled that as well!) but the CPU is doing okay?
As an aside I try and aim for neutral - and failing that positive - pressure when it comes to air flow so 3 fans drawing air in should be balanced by 3 or more fans to blow hot air out. On principle more air = more cooling but negative pressure means every crack and seam in the case will collect dust which looks untidy
Just things to consider as they only really affect the top end builds. ____________________ Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter |
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UncleFester |
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UncleFester World Chat Champion
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xX-Alex-Xx |
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xX-Alex-Xx World Chat Champion
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TravisBickle |
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TravisBickle World Chat Champion
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P. |
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P. Red Rocket
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UncleFester |
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UncleFester World Chat Champion
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xX-Alex-Xx |
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xX-Alex-Xx World Chat Champion
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P. Red Rocket
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TravisBickle |
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TravisBickle World Chat Champion
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P. |
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P. Red Rocket
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Posted: 15:08 - 05 Jun 2021 Post subject: |
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~80.
Anything over 65/70 I care about, even at full beans nothing hits 70.
Just felt that card was a little undercooled, took about 100ml of liquid out when taken apart, it was OK, but man it just didn't do the job, MSI responded and asked about how it was used/age, they didn't actually care, they asked questions and never responded again |
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bladerunner |
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bladerunner World Chat Champion
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Old Thread Alert!
The last post was made 3 years ago. Instead of replying here, would creating a new thread be more useful? |
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