High cpu temps on 0 cpu load. Need help :(

[sajidalimudassar]

I am having relatively higher temps, ~55c with 0% cpu utilization. Ambient is 33.3c.
Using Ryzen 9 3900x, with Arctic liquid freezer II 280 in Aorus C300G case. Radiator mounted on front with push config to push room air to radiator into the case and three 120 exhaust fans 1 rear and 2 on top.

Core performance boost enabled, cpu vcore set to normal with dynamic vcore(DVID) set to -0.126v, precision boost overdrive is set to auto, xmp profile applied

Any serious advice to improve the temps would be appreciated.

 

[UPDATE]
AS it turned out, idle temps are fine, currently investigating load temps with this CPU+AIO in the thread now.

PCPartPicker Part List

Type	Item	Price
CPU	AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor	$429.99 @ Amazon
CPU Cooler	ARCTIC Liquid Freezer II 280 72.8 CFM Liquid CPU Cooler
Thermal Compound	Noctua NT-H1 3.5 g Thermal Paste	$7.90 @ Amazon
Motherboard	Gigabyte X570 AORUS ELITE WIFI ATX AM4 Motherboard	$199.00 @ B&H
Memory	G.Skill Trident Z RGB 32 GB (2 x 16 GB) DDR4-3600 CL16 Memory	$174.99 @ Newegg
Storage	Samsung 860 Evo 500 GB 2.5" Solid State Drive	$74.98 @ Amazon
Storage	Samsung 970 Pro 1 TB M.2-2280 NVME Solid State Drive	$349.99 @ Amazon
Video Card	Sapphire Radeon RX 5700 XT 8 GB NITRO+ Video Card	$428.98 @ Newegg
Case	Gigabyte AC300W ATX Mid Tower Case
Power Supply	Cougar GX-S 750 W 80+ Gold Certified ATX Power Supply	$149.99 @ Amazon
Operating System	Microsoft Windows 10 Pro OEM 64-bit	$139.88 @ Other World Computing
Keyboard	Razer Cynosa Chroma RGB Wired Gaming Keyboard	$59.99 @ Amazon
Mouse	SteelSeries Rival 3 Wired Optical Mouse	$28.99 @ Dell
	Prices include shipping, taxes, rebates, and discounts
	Total	$2044.68
	Generated by PCPartPicker 2020-10-07 10:03 EDT-0400

 

[Kilrah]

12 minutes ago, sajidalimudassar said:

~55c with 0% cpu utilization. Ambient is 33.3c.

Sounds just fine. 

Look at load temps, those are the only ones that matter.

[AndreiArgeanu]

It's pretty normal for ryzen to have higher idle temps, especially considering your high ambient temperatures.

Like mentioned above, load temps is all you should worry about.

[Stahlmann]

55°C idle is not high at all. It's about what i'd expect. My 3700X was the same while using a NH-D15. For 33°C ambient you can't really expect much better. For reference my 3700X now idles at ~45°C when cooled with 5x 120mm worth of fans/rads and 21°C ambient.

 

TLDR: You're good.

[Energycore]

Hey there!

 

Considering your high ambient temperature, I would not be too worried about high idle temps like this. The higher the ambient temperature, the higher the temperature of your components will be, and your CPU is idling around 20C over ambient, which is pretty good.

 

If you teleported your computer as is to a place where the ambient was 10C, temps would be 30C on the CPU at idle, which is incredibly cool.

 

Make sure your radiator is placed above your pump, or if it's in front that it's oriented with the tubes down. This will ensure that there's no air bubbles stuck in your pump that might hurt performance.

[sajidalimudassar]

Thank you all for confirming 20C above ambient is fine.

 

I have changed the cpu vcore to auto, it gets cpu max vcore temps to 4.88.
Now I am idling to roughly between 55-58c. and under full stress load, it immediately jumps to ~94C, where it gets thermally throttle I guess.

[sajidalimudassar]

@Energycore > Make sure your radiator is placed above your pump, or if it's in front that it's oriented with the tubes down. This will ensure that there's no air bubbles stuck in your pump that might hurt performance.

Yup, saw the gamersnexus video, and somehow achieved that inside my case. :)

[Energycore]

4 minutes ago, sajidalimudassar said:

it immediately jumps to ~94C, where it gets thermally throttle I guess.

This is where we should start looking for problems. AIOs should take forever to reach max temp, not immediately jump to Tmax.

 

I would say there are two main suspects: not enough thermal paste and not enough mounting pressure. Reseat and repaste the block, see if that changes temperature. If not, let us know.

[Energycore]

When remounting the Block, tighten in a cross pattern, one corner at a time. Tighten it until it's hard to keep tightening, then about 1/8th of a turn more.

[sajidalimudassar]

10 minutes ago, Energycore said:

This is where we should start looking for problems. AIOs should take forever to reach max temp, not immediately jump to Tmax.

 

I would say there are two main suspects: not enough thermal paste and not enough mounting pressure. Reseat and repaste the block, see if that changes temperature. If not, let us know.

Aha, so there was an issue. great help, will remount CPU block next day and post back results here, after following all the guidelines so graciously provided by you. Thank you so much.

[VeganJoy]

4 minutes ago, Energycore said:

This is where we should start looking for problems. AIOs should take forever to reach max temp, not immediately jump to Tmax.

my buddy's kraken x63 with a 10600k/10900k takes like 20-30 secs to heat soak, if its even that long. seems weird to me but he can run p95 small ffts overnight and temps will be the same between 20 seconds in and 20 hours in

[Energycore]

Just now, VeganJoy said:

my buddy's kraken x63 with a 10600k/10900k takes like 20-30 secs to heat soak, if its even that long. seems weird to me but he can run p95 small ffts overnight and temps will be the same between 20 seconds in and 20 hours in

That's interesting. Most other AIOs take a long time to hit Tmax

[VeganJoy]

10 minutes ago, Energycore said:

That's interesting. Most other AIOs take a long time to hit Tmax

i thought it was a general feature of aios as they have more volume to absorb heat, is the kraken specifically an exception?

[sajidalimudassar]

@Energycore I opened the case and only just tightened the screws on cpu block which were a bit loose. top 2 were pretty tight, but bottom 2 were a little loose. I have tightened them up, bottom right one was kept going and I was feeling that the bracket provided by arctic is getting bent, but I kept going till I felt that it is pretty tight.

Turned on machine, ran cpu stress test, monitored the temps. started with same ~55c with ~33c ambient. Applying full stress to cpu spiked temps to ~81c within seconds, and then it kept rising slowly, after 15 min, it reached around 90c, and stopped rising after I hit 91.4c, I have stressed the cpu for 25min, and the temps maxed out at 91.4c and stayed there for last 5 minutes.

Question 1: I guess I don't need to reapply the thermal paste, and it was only cpu block retention issue, please confirm if I should also try to reapply paste given above results, I am guessing the issue is solved.

 

Question 2: As the cpu temperature under load is improved, should I apply full auto boost (Core performance boost enabled, with cpu vcore also set to auto), which will allow cpu to boost to max it can. I have noticed it applies cpu vcore 1.488v maximum, with avg of vcore 1.26v-1.3v, is this fine, or should I continue to offset the vcore voltage to -0.126v, which reduces the max vcore that can be applied automatically to cpu with that offset.

 

HUGE BUNDLE of THANKS for your AWESOME HELP.

[Energycore]

35 minutes ago, sajidalimudassar said:

@Energycore I opened the case and only just tightened the screws on cpu block which were a bit loose. top 2 were pretty tight, but bottom 2 were a little loose. I have tightened them up, bottom right one was kept going and I was feeling that the bracket provided by arctic is getting bent, but I kept going till I felt that it is pretty tight.

Turned on machine, ran cpu stress test, monitored the temps. started with same ~55c with ~33c ambient. Applying full stress to cpu spiked temps to ~81c within seconds, and then it kept rising slowly, after 15 min, it reached around 90c, and stopped rising after I hit 91.4c, I have stressed the cpu for 25min, and the temps maxed out at 91.4c and stayed there for last 5 minutes.

Question 1: I guess I don't need to reapply the thermal paste, and it was only cpu block retention issue, please confirm if I should also try to reapply paste given above results, I am guessing the issue is solved.

 

Question 2: As the cpu temperature under load is improved, should I apply full auto boost (Core performance boost enabled, with cpu vcore also set to auto), which will allow cpu to boost to max it can. I have noticed it applies cpu vcore 1.488v maximum, with avg of vcore 1.26v-1.3v, is this fine, or should I continue to offset the vcore voltage to -0.126v, which reduces the max vcore that can be applied automatically to cpu with that offset.

 

HUGE BUNDLE of THANKS for your AWESOME HELP.

Hey!

 

Considering the max temps I would personally not apply full boost. 91C is the territory where your CPU can start aging rapidly as the silicon is stressed. I'm glad to know your temps are better though!

 

I suggest creating a CPU Fan Curve that puts the fans at 100% when the temp reaches 85. You should be able to do this in the BIOS or with a program.

[sajidalimudassar]

@Energycore

Got it, not keep cpu at 90c. max should be around 85c. My fan curve is already set to aggressive in BIOS for liquid cooler fan connection.

I can try to move my machine to air conditioned room, which is usually at ambient of 26c, that might help. but will reduce the vcore with some offset, as I think frequent 1.488v can also degrade cpu life.

[Energycore]

2 minutes ago, sajidalimudassar said:

@Energycore

Got it, not keep cpu at 90c. max should be around 85c. My fan curve is already set to aggressive in BIOS for liquid cooler fan connection.

I can try to move my machine to air conditioned room, which is usually at ambient of 26c, that might help. but will reduce the vcore with some offset, as I think frequent 1.488v can also degrade cpu life.

1.488v does sound unrealistically high. Where are you getting this number? Is it the BIOS?

[sajidalimudassar]

HWiNFO64 and CPUID HWMonitor.

[sajidalimudassar]

HWiNFO64 and CPUID HWMonitor.
See last comment too... @Energycore

[LogicalDrm]

-> Moved to Air Cooling

[sajidalimudassar]

@LogicalDrm   You might have missed the conversation or may be mistaken by my higher temps/vcore. I am on liquid cooling. Using Arctic Liquid Freezer II 280 as shown in pc parts list too.
Correct me if I am wrong, but I think at moving to liquid cooling would make more sense.

 

@Energycore have you saw the last 2 screenshots, where I am reading the vcore values, please correct me if I am using right place to look at the cpu vcore.

[LogicalDrm]

3 hours ago, sajidalimudassar said:

@LogicalDrm   You might have missed the conversation or may be mistaken by my higher temps/vcore. I am on liquid cooling. Using Arctic Liquid Freezer II 280 as shown in pc parts list too.
Correct me if I am wrong, but I think at moving to liquid cooling would make more sense.

 

@Energycore have you saw the last 2 screenshots, where I am reading the vcore values, please correct me if I am using right place to look at the cpu vcore.

You were talking about fans and CPU settings more than which AIO to pick. AIO cooled things where AIO itself isn't the main point don't go to Liquid cooling if I'm deciding. If you want, this can be moved to CPUs, Motherboards and Memory which I think is the next best thing.

[narrdarr]

I haven't seen anyone mention pump speed.

Is the pump speed of the aio at @ max speed? It should be.

 

Second you should remount the block and repasted. You should tighten in a cross pattern. Not doing this can cause issues.

 

Then there is another issue the case and it's lack of air flow through the front.

 

If you can top mount the aio it would help alot. With 3x intakes 

 

If you can't second best would be front as high as you can get with tubes down. 3rd best same tube up tho.

 

 

Also since the aio is on the front have you tested with no front panel?

 

[Jeppes]

Test temps without that front panel blocking 99% of airflow.

[sajidalimudassar]

3 hours ago, LogicalDrm said:

You were talking about fans and CPU settings more than which AIO to pick. AIO cooled things where AIO itself isn't the main point don't go to Liquid cooling if I'm deciding. If you want, this can be moved to CPUs, Motherboards and Memory which I think is the next best thing.

Sure, CPUs, Motherboards and Memory might be best place. AIO is already selected and in use, and you are correct, my issue is temps and cpu settings which can utilize this AIO in proper way.

 

1 hour ago, narrdarr said:

I haven't seen anyone mention pump speed.

Is the pump speed of the aio at @ max speed? It should be.

 

Second you should remount the block and repasted. You should tighten in a cross pattern. Not doing this can cause issues.

 

Then there is another issue the case and it's lack of air flow through the front.

 

If you can top mount the aio it would help alot. With 3x intakes 

 

If you can't second best would be front as high as you can get with tubes down. 3rd best same tube up tho.

 

 

Also since the aio is on the front have you tested with no front panel?

 

Pump and radiator fans speed is at max when temp hits >60c. Arctic liquid AIO comes with single PWM controller header, which controls pump and both radiator fans with one connector.

Thank you for suggestion on remound of block with repaste. As I explained in my recent comment, JUST tightening the screws on AIO cpu block improved temps (bottom 2 screws were little loose) and cpu is now heated up gradually instead of jumping to Tmax within seconds. Please confirm even with this improvement, should I move forward with remount and repaste?

 

Case Air flow does not seem to be issue here. Also I have 3 x 120mm exhaust fans, 1 rear 2 top.

 

TOP does not have clearance for this AIO, mounted on front with radiator higher than cpu block and tubes down.

Yes, I have tested with front panel removed also.

1 hour ago, Jeppes said:

Test temps without that front panel blocking 99% of airflow.

Yes, did that, very small different, almost negligible.