New CPU having random temperature peaks

[Horkos]

Hello everyone,

 

I'm having trouble with my new CPU (well it hasn't caused anything nasty yet but I'm worried) : idling, it stays between 51°C and 57°C - kind of normal - but it randomly peaks to 70°C without me doing anything (neither gaming nor photoshop).

 

The airflow in my case isn't optimal (you can barely fit a cigarette rolling paper between my GPU and the case), but considering it's only peaks, and then the temperature decrases back to ~52°C, I don't think it has something to do with my issue...

 

What could cause that?

 

Thanks a lot!

***

BUILD

* CPU: AMD Ryzen 9 7900 12-core processor (original cooler replaced by COOLER MASTER Hyper G412R)

* GPU: MSI AMD Radeon RX 6750 XT 12g

* MB: ASUS Prime B-650 plus

* RAM: CORSAIR Vengeance DDR5 32gb (2*16) 7000MHz CL40 Intel XMP (I learned too late that the mb couldn't handle 7000mhz)

* STORAGE: M.2 CRUCIAL P3 plus 2To

* POWER: GIGABYTE P750GM 750w

* CASE/ Spirit of gamer Clone III (yes, it fits) - no additional fans 

* OS: Windows 11 home x64

* Tool used to check temperature: AMD Adrenalin

[Hinjima]

42 minutes ago, Horkos said:

Hello everyone,

 

I'm having trouble with my new CPU (well it hasn't caused anything nasty yet but I'm worried) : idling, it stays between 51°C and 57°C - kind of normal - but it randomly peaks to 70°C without me doing anything (neither gaming nor photoshop).

 

The airflow in my case isn't optimal (you can barely fit a cigarette rolling paper between my GPU and the case), but considering it's only peaks, and then the temperature decrases back to ~52°C, I don't think it has something to do with my issue...

 

 

Hey there! Welcome to the Forum!  
This is completely normal behaviour from the Ryzen 7000 series, they do spike quite a bit in temperature.  I helped someone with a similar question and I am going to link that thread so you can read through it.
It will also explain how the Ryzen 7000/ AM5 CPU's work.

There are also 2 videos in this thread I advice you to watch.

 

TLDR: Ryzen 7000 WANTS to boost to 95c before anything else, they are designed to hit a thermal limit before anything else. Thats why they spike a bit, they have no power limits until 95c.