01-31-2024 10:33 PM
Hello,
I have a 13900K cooled by a 360mm AIO. I currently also have an ASUS ROG Z790-H paired with 32 GB (16X2) G.Skill F5 DDR5 6400 Ram.
So I am not sure if this is normal behavior but by default P-Core #6 and #7 overclock to 5800 while P-Core 1-5 maxes out at 5500.
However if I overclock P-Core 0 and 1 in BIOS to 5800, the system becomes unstable, boots and loads to windows but applications just start crashing. Is there something funky with my 13900K where the primary cores are #6 and 7 instead of 0 and 1?
01-31-2024 11:04 PM - edited 01-31-2024 11:06 PM
Hi @sekinpetr P core frequency depends on the load and the assigned cores. Intel Turbo Boost will assign the "best cores" the CPU's maximum frequency.
If you load up the CPU with high current all core workload such as Cinebench, you should see that in an all core workload the frequency on all cores is fixed.
Raising all cores to operate at 5800MHz may require additional tuning. You can try using Intel Velocity Boost 2+ Profile which will boost the all core frequency 200MHz if thermal margins allow, however, you will need to test stability.