Question New PC CPU Idle Instabilities?

[Reefles]

Hi there I recently built a new PC and have been having spikes in-game as well as at idle. I reseated my CPU cooler a second time removing the thermal paste with isopropyl alcohol.
When placing the cooler down there was thermal paste on the CPU and I put it up and down a few times on the contact of the cooler just to realize the cpu cooler mounts weren't on. Originally before replacing the thermal paste I was getting similar temperatures but higher and the thermal paste seemed to be almost all gone on the CPU. Eventually seating down the face fully on the CPU. Could this have displaced the thermal paste, causing air bubbles or any other problems? For example I could be sitting at 48C then spike to 58C idle just for it to go down again a couple degrees at a time. Sometimes idle just stays stable. In game it can spike from 72C-81C on a tick as well just to go down after a bit. Sometimes after clicking a video link it takes a couple seconds too, or just 1 second to unpause a youtube video. Alt tabbing in game causes a 1 second sudden scary stuttering sometimes but rarely happens.


https://pcpartpicker.com/list/TLybrv

https://imgur.com/a/kiC06BO

View: https://imgur.com/a/kiC06BO


As you see above it is spiking from idle (47-51C) to (66-69C) for no reason whatsoever while I'm watching youtube videos? Wondering why this is happening?
Sometimes after games or in general the browser becomes very slow, even going as far as white screening for 1-2 seconds before loading, or just freezing a bit. Or if I scroll it takes a sec. Even on the desktop screen when right clicking it can be delayed. I disabled AMD EXPO. Wondering if this would help? The spikes above still occured after disabling EXPO. In a certain game (the finals) I was spiking at 80-83C but it usually held around 76C (with EXPO on).

https://imgur.com/a/aIGDy9p

View: https://imgur.com/a/aIGDy9p

https://imgur.com/a/pAqqIqs

View: https://imgur.com/a/pAqqIqs

https://imgur.com/a/NEsUedR

View: https://imgur.com/a/NEsUedR


Game actually froze and shut off after gaming for 1.5 hrs. Bluetooth also enabled in the bottom right randomly after the freeze.

 

[CountMike]

Hi there I recently built a new PC and have been having spikes in-game as well as at idle. I reseated my CPU cooler a second time removing the thermal paste with isopropyl alcohol.
When placing the cooler down there was thermal paste on the CPU and I put it up and down a few times on the contact of the cooler just to realize the cpu cooler mounts weren't on. Originally before replacing the thermal paste I was getting similar temperatures but higher and the thermal paste seemed to be almost all gone on the CPU. Eventually seating down the face fully on the CPU. Could this have displaced the thermal paste, causing air bubbles or any other problems? For example I could be sitting at 48C then spike to 58C idle just for it to go down again a couple degrees at a time. Sometimes idle just stays stable. In game it can spike from 72C-81C on a tick as well just to go down after a bit. Sometimes after clicking a video link it takes a couple seconds too, or just 1 second to unpause a youtube video. Alt tabbing in game causes a 1 second sudden scary stuttering sometimes but rarely happens.


https://pcpartpicker.com/list/TLybrv

https://imgur.com/hk4ta4Z

View: https://imgur.com/hk4ta4Z

https://imgur.com/qGtiVcZ

View: https://imgur.com/qGtiVcZ

https://imgur.com/a/BPxHZB6

View: https://imgur.com/a/BPxHZB6

https://imgur.com/a/V6WJgN4

View: https://imgur.com/a/V6WJgN4

https://imgur.com/a/uS4GtHC

View: https://imgur.com/a/uS4GtHC

Those are perfectly good temperatures and normal behavior. As load changes so do voltages and power requirements which in turn cause temperature changes. Even at (seemingly) idle, OS does stuff in background causing same effects. There is resistance to path heat transfers from cores to cooler and it takes some time for heat to transfer to cooler and to air so some sudden changes are normal although it takes longer to stabilize.
If you are not sure about cooler mounting and paste, redo it properly this time by cleaning off both surfaces and replacing paste in one go, taking cooler off and replacing it causes uneven spread of paste and quite possibly air baubles which are insulators. Since you have an air cooler, proper placement and case ventilation also ply big role.

 

[Reefles]

Those are perfectly good temperatures and normal behavior. As load changes so do voltages and power requirements which in turn cause temperature changes. Even at (seemingly) idle, OS does stuff in background causing same effects. There is resistance to path heat transfers from cores to cooler and it takes some time for heat to transfer to cooler and to air so some sudden changes are normal although it takes longer to stabilize.
If you are not sure about cooler mounting and paste, redo it properly this time by cleaning off both surfaces and replacing paste in one go, taking cooler off and replacing it causes uneven spread of paste and quite possibly air baubles which are insulators. Since you have an air cooler, proper placement and case ventilation also ply big role.

I updated my pictures. Those pictures were not accurate. They just showed one small spike. Thank you for your input. I am considering redoing the thermal paste again.

 

[CountMike]

I updated my pictures. Those pictures were not accurate. They just showed one small spike. Thank you for your input. I am considering redoing the thermal paste again.

Those pictures show GPU yet you are asking about CPU, which one ?
You could use program like HWinfo to see all and in detail.

 

[Reefles]

Those pictures show GPU yet you are asking about CPU, which one ?
You could use program like HWinfo to see all and in detail.

Take note of the CPU temperature near the bottom. The waves are the CPU's fluctuations from 49-70C. Each wave that goes up peaks around 68-70C. I'll try HWinfo.

 

[CountMike]

Take note of the CPU temperature near the bottom. The waves are the CPU's fluctuations from 49-69C. I'll try HWinfo.

Those CPU temps are too broad, CPU has sensors in multiple places and each one has different meaning.Not sure which exact it shows, could be just a hottest core but whole CPU could be running much cooler.

 

[Reefles]

Those CPU temps are too broad, CPU has sensors in multiple places and each one has different meaning.Not sure which exact it shows, could be just a hottest core but whole CPU could be running much cooler.

Updated it with 3 different sections scrolling down) Game froze after a 1hr-1.5. I noticed after the game too it was slow on the browser etc at first. In game no signs of slowing, sometimes micro stutters that will go away and not come back.