[Z590] Asus ROG Maximus XIII Hero - PCH High Temperature

[EncodeGR]

My PCH temperature is fairly high, which concerns me. I'm used to everything else in my system being pretty chilly, usually around 28-30 C. The airflow is also really good. The *only* thing that gets hot is the PCH, and i don't understand why.


-- Some Backround Info, Setup --

Intel Pentium G6400 4.0GHz (Lol, well... until i get my Rocket Lake chip)

MSI GTX 1070Ti Gaming X (Until i actually manage to find a 3080/3070, if ever...)

HyperX DDR4 32GB 3600Mhz XMP CL17 (4 x 8 GB)

Asus ROG Maximus XIII Hero (Z590)

Asus ROG Thor 850 Plat

Samsung 980 Pro M2. NVMe PCIe 4.0 500GB (installed in M2.2_2, cpu bound)

Noctua NH-U12A

Noctua NF-A14 PWM (x6)



-- Things i've tried --

• Updated Drivers. Updated ME FW. Updated BIOS.
  
• Inspected PCH heatsink and thermal pad and resit. No change.
  
• Removed M.2 NVMe drive and GPU. No significant change.
  
• Checked the PCH 1.8v VCCIN voltage, stable 1.8v.
  
• Made sure nothing is "overclocked", using XMP, or enhanced in any automatic way.
  
• Lowered VCCIO and VCCSA to 1.10v, since automatic was pushing both to 1.40 for some reason !! (CPU weak memory controller ?). No change.
  

** I need to mention i couldn't find the PCH Core Voltage, anywhere in the settings. No idea why.


-- PCH Temperature --

PCH temperature starts at 35-38 C, during a cold boot. During the next 5 minutes it climbs and stabilizes at 56 - 62 C, while IDLING.

And that's with a system without GPU, or M.2 NVMe drive. Just the CPU and its iGPU which stay at 24 C, cooled by a Noctua NH-U12A. With a fully assembled system and under load it goes up to 70 - 80 C.


Now... The only thing i have not tried yet, is to completely remove the plastic ROG-logo cover, on top of the PCH, as it may be severely suffocating the heatsink, restricting the airflow towards it.

That would explain the temps under load, but i'm not sure if that explains the initial fast-climbing temperatures while idling. And honestly, without the cover the LEDs underneath it are blinding, so the Aura lighting needs to be completely disabled. Could this be a flawed design ?? I doubt.

I don't understand what's wrong. I've seen people reviewing this mothereboard, while reporting PCH idle temps at 35C and 55C under load. I know that right now, it's not gonna cause any sort of damage. I am however concerned about the longevity and a possible degredation over time, thinking that my PCH is at 75-80 C while gaming.

Sorry for the long post, had to make sure everythong's covered.

Any help would be appreciated 🙂

-- HWInfo & HWMonitor -> 3 minutes after cold boot --
-- Bios Monitor -> 10 minutes after cold boot --

[TasmaN]

Hi, everyone! Found some options: if set options like on my screenshot temperature of PCH is around 45-50C at idle. By default all of them are disabled...so no need to set a fan toward it. Maybe, ASUS should look this part of UEFI...

[3dw4rdTm]

TasmaN wrote:
Hi, everyone! Found some options: if set options like on my screenshot temperature of PCH is around 45-50C at idle. By default all of them are disabled...so no need to set a fan toward it. Maybe, ASUS should look this part of UEFI...

that really works for me!! thank you everything!

[radvitaly]

TasmaN wrote:
Hi, everyone! Found some options: if set options like on my screenshot temperature of PCH is around 45-50C at idle. By default all of them are disabled...so no need to set a fan toward it. Maybe, ASUS should look this part of UEFI...

Spasibo! Posledoval dannym nastroykam, temperatura upala gradusov na 10. Poka testiruy v dannom rezhime.
Thanks! That works!

[PeterK77]

Thank you TasmaN . Definitely it helped a lot. Regarding my higher ambient temp - 30C. Temperature went down again. But still I removed plastic cover and installed additional ventilator and now I see there 45C. without your solution and everything else I had temp. 56-60C and at the beginning with no arrangement PCH had 83C during idle load.

I don't know how it works these days, but I used to assemble computer for myself once per 8-10 years. I've never bought cheapest components. On the contrary I like quality and if possible I am paying for it, otherwise I don't buy it. But, now I see there are led lights for nothing and stupidly used covers. It is not cheap MOBO I'd say and such mistakes shouldn't be there.

Hey Asus! Can you please send at least drawings, so I can use existing holes on MOBO to make my own heat sinks? I am not interested in led lights. I am pretty disappointed too. After such long time I bought wrong MOBO. You know MOBO can have tons of great features, but if it dies after 2-3 years just because of cooling it is everything for nothing. Thank you, for drawings, but probably, this is the last time I bought MOBO from ASUS unless there is very good explanation why it is happening this way.

[jrwhit]

I made the changes TasmaN suggested in the Misc. Configurations in BIOS 0902 and it works! I have a Maximus XIII Code with an Intel i7-11700k proc. and I was getting PCH readings of 81 when idle. That may well be within its range according to ASUS, but it is still damned high. I now have a reading of 66 - much better and everything else seems fine with those changes. I had tried to turn off Thunderbolt and it did reduce the temp to 71, but I lost the speed on both of the USB C ports that were one of the reasons for buying this motherboard. A backup to a portable SSD took 25 minutes instead of 5 minutes. With Thunderbolt enabled again i am now back to the fast speed. Thanks for the suggestion TasmaN!

[MCube74]

TasmaN wrote:
Hi, everyone! Found some options: if set options like on my screenshot temperature of PCH is around 45-50C at idle. By default all of them are disabled...so no need to set a fan toward it. Maybe, ASUS should look this part of UEFI...

I tried the settings you suggested but the PCH temps didn't change in the bios. It stays about the same at 80 degree C to 85 degrees C.

Did you remove the plastic protection on the chipset heatsink?

Wondering if we can install a Noctua 4cm fan over the heatsink??

[PeterK77]

MCube74 wrote:
I tried the settings you suggested but the PCH temps didn't change in the bios. It stays about the same at 80 degree C to 85 degrees C.

Did you remove the plastic protection on the chipset heatsink?

Wondering if we can install a Noctua 4cm fan over the heatsink??

Actually you have to remove this cover and yes, temperature is bit higher in bios, or when it is booting. But, when you return to the windows, after a while you can see temperature of PCH will drop. If you have 30°C ambient temperature, it won't help as desired, so I added ventilator mounted to the same openings as original cover once was.

[MCube74]

PeterK77 wrote:
Actually you have to remove this cover and yes, temperature is bit higher in bios, or when it is booting. But, when you return to the windows, after a while you can see temperature of PCH will drop. If you have 30°C ambient temperature, it won't help as desired, so I added ventilator mounted to the same openings as original cover once was.

You installed a noctua fan over the pch heatsink (cover)? Isnt there the ROG RGB logo there?
How did you manage to install the fan? *What’s holding the fan?

Currently in Windows 10 the PCH temp stays around 68 degrees c to 71degrees C in most cases.
Still pretty high. * My ambient temp is 24 degrees C.

[PeterK77]

MCube74 wrote:
You installed a noctua fan over the pch heatsink (cover)? Isnt there the ROG RGB logo there?
How did you manage to install the fan? *What’s holding the fan?

Currently in Windows 10 the PCH temp stays around 68 degrees c to 71degrees C in most cases.
Still pretty high. * My ambient temp is 24 degrees C.

Apology for late response, but I am not visiting this page too often. It is easy to install fun over heatsink, when you disassemble original heatsink cover. Next you need to measure original cover and according to dimensions new modified model needs to be made. Of course, new model already contains intended fun attachment shape. Hardest part was to measure all dimensions with "home" tools such as caliper. The rest is to print new holder on some 3D printer (I used Prusa). As you can see in picture I used original screws to attach this holder to PCB. Fun itself is under angle to get higher volume of air to cool. I know it looks horrible everything, but what I need most, is this board to be reliable. Everything else is second. Probably noctua fun can be bought in black color, so it would look better. My case doesn't have any transparent covers, so I basically don't care about appearance :D.

[HSteinway]

TasmaN wrote:
Hi, everyone! Found some options: if set options like on my screenshot temperature of PCH is around 45-50C at idle. By default all of them are disabled...so no need to set a fan toward it. Maybe, ASUS should look this part of UEFI...

Man, it's incredible! It works! Thanks a lot! We had 70-80c on PCH on our XIII Hero at IDLE, tried everything: bios updating etc. But it didn't help. You did!

I'll repeat in text what people have to do to resolve this real problem:

BIOS - Advanced - Platform Misc Configuration:

PCI Express Native Power Management: Enabled
Native ASPM: Disabled
---
[PCH - PCI Express]
DMI Link ASPM Control: Auto
ASPM: Auto
L1 Substates: Disabled
---
[SA - PCI Express]
DMI Link ASPM Control: Disabled (I have this option in the first line on 1007 Bios)
DMI Gen3 ASPM Control: Auto
DMI Gen3 ASPM: Auto
PEG - ASPM: Auto

Save & Exit

Now we have 45-50c at idle, <55c at hard playing).


Thanks, TasmaN!

PS.: I forgot to mention that the temperature was going down from 75 to 50 slowly, within 30 minutes maybe, so it's not a sensor bug.