Ryzen 9 5900x temperature spikes - normal?

[rotexen]

Hi, I'm having temperature spikes all the time with my ryzen 9 5900x, going from the sub 40Cs to 70, 75C in a second or two, and then back to idle temps. That happens even if I open a couple youtube videos, or close their tabs.

Is this normal? This is specially annoying when you have an AIO cooler that is hard coded to ramp up their fans to 100% after reaching 60C, which happens all the time with those temp spikes.

 

[BetteBalterZen]

Pretty sure it's normal behavior. 

The new Ryzen CPU's actually use more voltage at idle than under load, because the CPU needs to be ready for the high single core boost clockspeeds, that is why you see these kind of high temp spikes. And 75c is nothing to worry about. 

Do a cinebench run or something to actually see your load temps. 

And what AIO do you have? 

[FliP0x]

When you open an app, the CPU boosts to open it quickly and the AIO cannot keep up quick enough for the sudden spike in clock speed. That's normal.

 

If you did not do it already, I recommnd optimizing your PBO curve, which helps to keep temperatures in check even under full load.

[HiyaRaven]

From my experience, this is normal.

While it is most likely normal, I recommend checking your cooling solutions. Just a slight movement can make quite the difference. 

[rotexen]

5 hours ago, BetteBalterZen said:

Pretty sure it's normal behavior. 

The new Ryzen CPU's actually use more voltage at idle than under load, because the CPU needs to be ready for the high single core boost clockspeeds, that is why you see these kind of high temp spikes. And 75c is nothing to worry about. 

Do a cinebench run or something to actually see your load temps. 

And what AIO do you have? 

i have the Asus rog Lc 360 rad 

i saw few vedios on youtube about PBO and undervolting

my mobo is Asus rog strix x570 gaming F

[rotexen]

5 hours ago, FliP0x said:

When you open an app, the CPU boosts to open it quickly and the AIO cannot keep up quick enough for the sudden spike in clock speed. That's normal.

 

If you did not do it already, I recommnd optimizing your PBO curve, which helps to keep temperatures in check even under full load.

been watching vedios on youtube on how to undervolt and PBO i'm on the latest bios 

not sure how to do it 

[FliP0x]

16 minutes ago, rotexen said:

been watching vedios on youtube on how to undervolt and PBO i'm on the latest bios 

not sure how to do it 

Look for Precision Boost Overdrive (likely in Advanced settings), then look for Curve Optimizer and start with -10, test it, if everything works great increase the offset by -5 until it either becomes unstable or you notice a decrease in boost clock.

 

Offsets of -15 to -20 should in general work most of the time.

[rotexen]

10 hours ago, FliP0x said:

Look for Precision Boost Overdrive (likely in Advanced settings), then look for Curve Optimizer and start with -10, test it, if everything works great increase the offset by -5 until it either becomes unstable or you notice a decrease in boost clock.

 

Offsets of -15 to -20 should in general work most of the time.

Do i set the offset negative 20 per core or all cores?

[FliP0x]

1 hour ago, rotexen said:

Do i set the offset negative 20 per core or all cores?

All cores.

Keep PBO at Auto and only adjust the Curve Optimizer. Stress test for 10-15 minutes after each offset change.

 

Don't just look for stability, but monitor your core clocks as well. If you push the negative Curve Optimizer too high (actually, low), you lose a couple hundred MHz from your max boost clock.

If you set your CO just right, you might actually get a few more MHz than you had before at much lower temps.

[An0maly_76]

Mine is air cooled (Scythe Mugen 5 / 120mm x 6, Corsair 4000X case with iCUE Commander Core, custom fan curve). I see 38C-42C at idle, 57C-65C with nominal load, Cinbench R23 peaks at 76C (PBO off) and 87C (PBO on). Fans never kick over 70%-75%, and don't kick 50% until around 55C. However, while I see rapid rising, I don't quite see what you're describing, normal or not. I also see rather rapid returns to idle temp (within 2-3 minutes or less) from peak concluding full load. Time frame of idle temp to full load temp is similar. AMD does say the 5900X is safe to 90C, however.

 

I see you used the Asus X570F, which appears to meet the Zen3's need for sufficient / substantial VMR cooling. How much thermal paste was used? How much ventilation does the case provides? The usual suspects. It may be as simple as tweaking a custom fan curve to better suit your setup. Specs on case / fans / rads (if any), etc. might help us to help you.

Edited May 12, 2022 by An0maly_76
Revised

[rotexen]

4 hours ago, An0maly_76 said:

Mine is air cooled (Scythe Mugen 5 / 120mm x 6, Corsair 4000X case with iCUE Commander Core, custom fan curve). I see 38C-42C at idle, 57C-65C with nominal load, Cinbench R23 peaks at 76C (PBO off) and 87C (PBO on). Fans never kick over 70%-75%, and don't kick 50% until around 55C. However, while I see rapid rising, I don't quite see what you're describing, normal or not. I also see rather rapid returns to idle temp (within 2-3 minutes or less) from peak concluding full load. Time frame of idle temp to full load temp is similar. AMD does say the 5900X is safe to 90C, however.

 

I see you used the Asus X570F, which appears to meet the Zen3's need for sufficient / substantial VMR cooling. How much thermal paste was used? How much ventilation does the case provides? The usual suspects. It may be as simple as tweaking a custom fan curve to better suit your setup. Specs on case / fans / rads (if any), etc. might help us to help you.

 

[jones177]

My 5900x was more quit running a game than it is YouTube.

 

To fix it I want into YouTube, Settings, Playback and performance and switched off inline playback.

 

[rotexen]

On 5/12/2022 at 3:16 PM, jones177 said:

My 5900x was more quit running a game than it is YouTube.

 

To fix it I want into YouTube, Settings, Playback and performance and switched off inline playback.

 

what about curve optimizer and undervolting ?

[rotexen]

On 5/12/2022 at 8:55 AM, An0maly_76 said:

Mine is air cooled (Scythe Mugen 5 / 120mm x 6, Corsair 4000X case with iCUE Commander Core, custom fan curve). I see 38C-42C at idle, 57C-65C with nominal load, Cinbench R23 peaks at 76C (PBO off) and 87C (PBO on). Fans never kick over 70%-75%, and don't kick 50% until around 55C. However, while I see rapid rising, I don't quite see what you're describing, normal or not. I also see rather rapid returns to idle temp (within 2-3 minutes or less) from peak concluding full load. Time frame of idle temp to full load temp is similar. AMD does say the 5900X is safe to 90C, however.

 

I see you used the Asus X570F, which appears to meet the Zen3's need for sufficient / substantial VMR cooling. How much thermal paste was used? How much ventilation does the case provides? The usual suspects. It may be as simple as tweaking a custom fan curve to better suit your setup. Specs on case / fans / rads (if any), etc. might help us to help you.

have you looked at the pic i posted?

[jones177]

On 5/13/2022 at 9:27 PM, rotexen said:

what about curve optimizer and undervolting ?

My 5900x uses an EK 360mm AIO. It idles in the low 30s and is in the 60s running Cinebench. 

 

It was the fans on the EK ramping up that was annoying and it only did that with YouTube so I treated it like a YouTube issue.

 

[An0maly_76]

2 hours ago, rotexen said:

have you looked at the pic i posted?

Actually, unless you @ (mention) someone when posting, there's no guarantee they'll even see a notification. This isn't the first time I've been quoted and not gotten a notification. Listing specs would be better, but the pics helps a bit. How are your fans positioned? Fronts should be pulling in, top and rear should be blowing out, meaning topside blows away from the processor and rear blows away from the processor. Also, this is the fan curve I run, perhaps it can help you to tweak yours, as I believe that is what is needed here.

 

[rotexen]

2 hours ago, An0maly_76 said:

Actually, unless you @ (mention) someone when posting, there's no guarantee they'll even see a notification. This isn't the first time I've been quoted and not gotten a notification. Listing specs would be better, but the pics helps a bit. How are your fans positioned? Fronts should be pulling in, top and rear should be blowing out, meaning topside blows away from the processor and rear blows away from the processor. Also, this is the fan curve I run, perhaps it can help you to tweak yours, as I believe that is what is needed here.

 

My pc specs are mentioned in my signature

[An0maly_76]

9 minutes ago, rotexen said:

My pc specs are mentioned in my signature

Touche. Ryzens are becoming a bit fussy with Corsair RAM as of late, BTW... Don't be surprised if you start having crashes or similar issues.

Edited June 30, 2022 by An0maly_76
Revised, more info

[rotexen]

3 minutes ago, An0maly_76 said:

Touche. Ryzens are becoming a bit fussy with Corsair RAM as of late, BTW... Don't be surprised if you start having crashes or similar issues.

Agree 

What software did you use to adjust

The curve

I used the one in the bios its similar