Question about changing windows 11 preferred core.

[electronicworld]

Hello everyone, i have a question. I have noticed both windows 11 OS and the games utilize mainly the same core of my 5600x, which is core 0.

I would like to ask if its possible to force windows to use the second best core as the main one to lift the load across 2 cores ? When I go for multicore benchmarks, my cpu averages at about 55-58 degrees celsius, but if its single core it goes up to 70 degrees celsius.

It really annoys me when single core processes slow down the computer noticably since both the process and the OS tries to utilize the same core.

 

[Mussels]

The temperature spikes are normal for modern hardware, mostly because of changes to how the temperatures are recorded in the first place (hottest core, not an average of all of them)

you're trying to mess with something you shouldnt, these CPU cores are meant to burst higher for milliseconds at a time and they cant do their job if you interfere and lock processes to threads and cores.

 

[eazen]

It really annoys me when single core processes slow down the computer noticably since both the process and the OS tries to utilize the same core.

That’s a assumption you made but it’s wrong. If one program needs a whole core for itself you can bet on it, it will use the whole core for itself and windows will either use nothing (more or less while benchmarking) or a different core. Generally Ryzen core management is very good, and it will balance itself well according to what’s needed.

 

[ThrashZone]

Hi,
As far as I know you have to disable that core 0 in bios
Then bios will assign the next best core as 0

You could try disabling hyper threading in bios often that will releive some stress on a single core and force more cores to be used instead of both threads on a single core.

But amd is not my thing so not sure if that is possible

 

[tabascosauz]

Hello everyone, i have a question. I have noticed both windows 11 OS and the games utilize mainly the same core of my 5600x, which is core 0.

I would like to ask if its possible to force windows to use the second best core as the main one to lift the load across 2 cores ? When I go for multicore benchmarks, my cpu averages at about 55-58 degrees celsius, but if its single core it goes up to 70 degrees celsius.

It really annoys me when single core processes slow down the computer noticably since both the process and the OS tries to utilize the same core.

AFAIK it is not possible to change this. Ryzen 3000/4000/5000 basically handshake between the OS and AGESA, with a predetermined core hierarchy that ranks the cores based on "quality". This is not open to the user to change, and disabling cores does not change the CPPC ranking.

Some programs do not care, but other programs can have their core affinities manually set using Task Manager or Process Lasso, to utilize the specific core you want it to. But this doesn't always work (e.g. CPU-Z), and you cannot change what core Windows uses. For example, on my 5900X Cores 6,8,9,10,11 are rarely used, so I offload Opentrack onto the CCD2 cores to bring temps down a little, as DCS will want to hammer Cores 0 and 1.

The high single core temps are not because two processes are using the same core. Ryzen 5000, at stock power limits, usually runs hottest on ST loads. This is especially evident for CPUs that run cool in MT, like 5600X and 5950X.

It is frustrating, as after undervolting the best core I have is by far Core 2 - but only Core 0 (much worse) and 1 (worse) are CPPC Preferred, so ST benchmarks never reflect what Core 2 can do, if they don't cooperate with process lasso.