Question R7 5800X3D normal single core spike temp while doing light tasks/youtube?

[jalvez]

Hello everyone,

Sometimes I get a single random spike in temps in one of the 8 cores (average temps are normal like in the other cores) while doing light tasks like watching YouTube for example, like random, 61ºC, 67ºC, 74°, not constant, just a random spike then goes back to 32ºC or 24ºC. Average temp of the core that gets the spike are fine like the other ones and it's not always the same core. I have the Arctic Liquid Freezer 280 AIO.

If I am gaming it never goes further than 58°/60° and does not spike at all which kind of tells that under real load it averages as it should.

I do really think that this is normal, because I had a 3600x that sometimes had this behaviour but just not as hot.

I just want to have peace of mind.
Thanks!

 

[TerryLaze]

Yeah with the recent news about 3xd CPUs having issues there is not going to be anybody that is going to tell you if this is ok or not...
Just disable exo if it's enabled and make sure to have Vcore locked to a low value.

 

[GarrettL]

Yeah with the recent news about 3xd CPUs having issues there is not going to be anybody that is going to tell you if this is ok or not...
Just disable exo if it's enabled and make sure to have Vcore locked to a low value.

Wrong. The issue with the AM5 socket and the 7800x3d was due to EXPO and SoC voltages that were not locked as they are on the AM4 5800x3d's.

The AM4 and 5800x3d's have never had this issue. Ever.

AMD Ryzen 7000 Burning Out: EXPO and SoC Voltages to Blame (AMD Responds)

Impacts all motherboard makers and all Ryzen 7000 chips.

www.tomshardware.com

Intel and AMD cpu's now use chiplet designs and all experince this bursty behavior. Temp spikes do occur as the cpu's reach the max boost frequency for short duration. This is NORMAL for AMD and Intel cpu's. Please see all the threads regarding the 13700K and especially the 13900k that struggle to stay under their throttling limit. What is important with today's cpu's is keeping them cool enough to prevent thermal throttling.

Now, as someone that owns a 5800x3d your cpu is behaving normally jalvez.

 

[TerryLaze]

Oh ok, 5800x3d, my mistake.

 

[hotaru.hino]

Single core spiking has been a thing since at least Zen+

I've owned a Zen+, Zen 2, and Zen 3 processor. They all do this. At some point (at least since Zen 2), AMD made Ryzen report preferred cores, which biases Windows to schedule cores on those first. At least that's what's supposed to happen. Intel since 2021 uses the same approach (https://www.tomshardware.com/reference/intel-favored-cpu-cores-turbo-boost-max-technology-3.0)

The thing to explain this is there'll always be idle tasks to do. Windows likes to shove them all onto one or two cores because from a power consumption and/or latency sensitive standpoint, this is the most efficient way to do it.