F5F Stay Refreshed Hardware Desktop Processor overheating persists despite upgraded cooler and alternative thermal paste.

Processor overheating persists despite upgraded cooler and alternative thermal paste.

Processor overheating persists despite upgraded cooler and alternative thermal paste.

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adjadam
Member
62
06-09-2022, 10:52 AM
#1
Hey everyone, I've been using an H100i pro RGB Corsair AIO for seven years with a Ryzen 5 1600x. From the start, it had trouble keeping my CPU cool—often hitting 80°C under heavy load with the default settings. At first, I didn’t give it much attention since I was pretty confident about PC builds. Recently, I switched to a new air cooler just to see if the issue was with the AIO itself.

Over the past year, I’ve experimented a lot: changed coolers, paste types, motherboard backplates, and even tried three different coolers. No matter what I did, my CPU stayed hot—running between 70-75°C at 75W power with an ambient temperature of 25°C. The AIO performed great on another system, so I realized it wasn’t the cooler that was failing.

I’ve kept everything stock BIOS, no overclocking, and only used DOCP. My case has two Corsair ML120 fans and a Phantom PH_F120SK_BBK_PWM exhaust fan. I removed the front panel because it was too tight, and I ran everything at full speed.

Here’s what I’ve tried so far:
- Ryzen 5 5500 (current)
- Another Ryzen 5 5500 from my dad’s PC
- Phanteks PH-TC12DX
- Phanteks P300 Eclipse with front cover off
- Various thermal pastes: Grizzly Hydronaut, Kryonaut, ID Cooling Paste, PH-NDC, Solar Geyser

I’ve attached a screenshot from HWmonitor during a stress test.

My questions:
- Are my motherboards compatible?
- Could the cooler or CPU mount be causing issues?
- Any other tips to keep things running cooler?
A
adjadam
06-09-2022, 10:52 AM #1

Hey everyone, I've been using an H100i pro RGB Corsair AIO for seven years with a Ryzen 5 1600x. From the start, it had trouble keeping my CPU cool—often hitting 80°C under heavy load with the default settings. At first, I didn’t give it much attention since I was pretty confident about PC builds. Recently, I switched to a new air cooler just to see if the issue was with the AIO itself.

Over the past year, I’ve experimented a lot: changed coolers, paste types, motherboard backplates, and even tried three different coolers. No matter what I did, my CPU stayed hot—running between 70-75°C at 75W power with an ambient temperature of 25°C. The AIO performed great on another system, so I realized it wasn’t the cooler that was failing.

I’ve kept everything stock BIOS, no overclocking, and only used DOCP. My case has two Corsair ML120 fans and a Phantom PH_F120SK_BBK_PWM exhaust fan. I removed the front panel because it was too tight, and I ran everything at full speed.

Here’s what I’ve tried so far:
- Ryzen 5 5500 (current)
- Another Ryzen 5 5500 from my dad’s PC
- Phanteks PH-TC12DX
- Phanteks P300 Eclipse with front cover off
- Various thermal pastes: Grizzly Hydronaut, Kryonaut, ID Cooling Paste, PH-NDC, Solar Geyser

I’ve attached a screenshot from HWmonitor during a stress test.

My questions:
- Are my motherboards compatible?
- Could the cooler or CPU mount be causing issues?
- Any other tips to keep things running cooler?

D
diamondswordjo
Junior Member
14
06-09-2022, 07:33 PM
#2
They built the chip to handle angles up to 90 degrees, which means it works well even if your temperature hits 70 during a stress test.
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diamondswordjo
06-09-2022, 07:33 PM #2

They built the chip to handle angles up to 90 degrees, which means it works well even if your temperature hits 70 during a stress test.

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LinkBoxia
Member
91
06-17-2022, 12:27 PM
#3
Are these changes impacting your results? Unmounting the cooler might reveal an irregular distribution of thermal paste or an improperly secured base.
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LinkBoxia
06-17-2022, 12:27 PM #3

Are these changes impacting your results? Unmounting the cooler might reveal an irregular distribution of thermal paste or an improperly secured base.

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CLPSGAMER
Member
176
06-18-2022, 05:22 PM
#4
I understand they're not dangerous temperatures, Im just trying to figure out why every cooler I've tried has a 15-20C increase in temperature when mounted on my motherboard. The different coolers all use their own mounting hardware which is why I also tried swapping out the backplate in case it was bent or something. I have seen that on the middle-top of the CPU the paste looks very thin sometimes and dries out in about 4 hours of use, theres almost nothing there while the rest of the paste is quite thick. There is paste there, it just really gets pressed thin. It almost looks like there is a high spot on the IHS, but when I held it up to a flat piece of metal it was slightly concave
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CLPSGAMER
06-18-2022, 05:22 PM #4

I understand they're not dangerous temperatures, Im just trying to figure out why every cooler I've tried has a 15-20C increase in temperature when mounted on my motherboard. The different coolers all use their own mounting hardware which is why I also tried swapping out the backplate in case it was bent or something. I have seen that on the middle-top of the CPU the paste looks very thin sometimes and dries out in about 4 hours of use, theres almost nothing there while the rest of the paste is quite thick. There is paste there, it just really gets pressed thin. It almost looks like there is a high spot on the IHS, but when I held it up to a flat piece of metal it was slightly concave

M
maximum215
Junior Member
49
06-22-2022, 10:06 PM
#5
It isn't overheating. It's operating according to AMD's specifications. The difference in temperature you mentioned refers to the increase from 50°C to 65°C.
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maximum215
06-22-2022, 10:06 PM #5

It isn't overheating. It's operating according to AMD's specifications. The difference in temperature you mentioned refers to the increase from 50°C to 65°C.

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ShadowdemonX5
Junior Member
43
06-23-2022, 03:13 AM
#6
I changed all the coolers I tried into my dad's PC using another 5500 and motherboard, while my brothers' PC had a 2600 and a different board. Both CPUs worked at 75W and the systems stayed around 55°C, but mine stays between 70-75°C no matter what cooler I use. Do you think it doesn't make sense that a 240mm AIO can only bring the CPU down to 70°C at 75W?
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ShadowdemonX5
06-23-2022, 03:13 AM #6

I changed all the coolers I tried into my dad's PC using another 5500 and motherboard, while my brothers' PC had a 2600 and a different board. Both CPUs worked at 75W and the systems stayed around 55°C, but mine stays between 70-75°C no matter what cooler I use. Do you think it doesn't make sense that a 240mm AIO can only bring the CPU down to 70°C at 75W?