I just bought a new i5-14500 for my pc and boinc is not using it all ... I had no problem with the old processor I had the i5-12400 . I can see that boinc is using only like 30 % of the new Processor . I had Boinc version 7.24.1 and I just tried the new beta 8.0 and the problem is the same ... I am also working on Windows 11 23h2 and boinc is not as a service..

Can you help me ...?

BOINC by default will only use the "P"-Performance Cores, of which your processor only has 6.

Some of the limitations are also Operating System (Windows, Linux) and software (BOINC in this instance) dependent.

I'm not a programmer/developer so I'm going to post some reading material below to help you understand the current limitations.

See official CPU specs:
Intel® Core™ i5 processor 14500 SPECS

CPU Specifications
Total Cores
14

# of Performance-cores
6

# of Efficient-cores
8

Total Threads
20

In layman's terms that is 6 real cores, 6 hyper thread cores & 8 Efficient-cores.

How to Geek explanation of the various core definitions:
What Are P-Cores and E-Cores on an Intel CPU?

Early-Adopter Problems
Since mixing different CPUs is a relatively new thing for x86 CPUs, there are some rough edges to be aware of in the early days. Developers of PC software previously haven't had reason to expect more than one type of CPU in a computer, so their software isn't aware of the difference between a P- and E- core. In general, this isn't an issue because the operating system assigns software threads to CPUs as needed, but there have been reports of some software (such as Denuvo) crashing or behaving strangely on these new CPU designs.

...

To sum it all up, here are the key facts you should know:

* Hybrid-architecture CPUs have both high-performance and high-efficiency cores.

* The efficiency cores save power and free up performance cores to concentrate on the most demanding tasks.

* PC software designed for traditional CPUs may get a little confused by hybrid CPUs until software patches arrive.

* You'll need the latest version of Windows to make the most of these CPUs, at least until older operating systems are updated

.

I have also disabled Asus enhancement 3.0 in the bios setting to keep the intel processor limits instead of asus limits because asus is pushing to hard on the processors ...

I think the problem is solved... ! My pc works 100% since 5 days ...!

Thank you for your help ..!