[SOLVED] i5-12400 shows only 2 cores and 4 threads, when it should be 6 cores and 12 threads.

[ferdinands]

My greetings.

It is on an MSI MAG B660M MORTAR DDR4. Before and after updating the BIOS, there have been no changes.

It is striking that when opening the Device Manager, in CPU, 12 appear (threads, I suppose). I used the Intel® Processor Identification Utility and it recognizes that it is 6 cores and 12 threads. But in msconfig only 4 cores appear.

I notice that I had an H110M-R before, with this same Windows 10, but seeing that it 'worked', I did not see the need to re-install anything when I put this MSI board on it. Sure, except for the problem I'm writing to you about.

 

[rgd1101]

for 12th gen do a fresh windows 11 install

 

[uWebb429]

Open msconfig, clear the Number of processors box and reboot. That is how you get Windows to find all of the available cores and threads.

 

[punkncat]

Using an OS install from a completely different machine is very likely to lead to a variety of issues as time goes on. The clean install advice above is solid.