9950X core temp differences

[zippos]

Hi all! I have tuned and stabiled curve optimizer and curve shaper for my 9950X and think I have found good stable settings performance wise. I am using PBO MB limits and all core load CPU stress test such as Cinebench 2024, the temperatures of the CPU cores are quite varying although the operating voltages and frequencies are almost identical.

I would appreciate some feedback on how normal a finding this is? See the attached image below for HWinfo on the voltages, freqs and temps during the load.

Based on the above, the performance is clearly limited by temperature. Nevertheless, the benchmark scores are quite good which would suggest that overall the cooling with a 360 AIO is adequate for the around 250 W the CPU is pulling. I am just wondering if there is a way to lower the temp of those few cores to get even more performance out. Somehow, I do not feel the issue is the contact between the integrated heatspreader (IHS) and the water block where I am using Thermal Grizzly Conductonaut liquid metal. Maybe it is the cores and their contact with the IHS? I am hoping that perhaps someone here has experience on the matter.

Below you can find some benchmark results.

3D Mark CPU Profile:

Cinebench 2024:

Cinebench 2023:

 

[zippos]

Anyone? It seems a bit odd to see only two cores above 90 degrees at 95 and 92 degrees, but the CPU and CCD temps being 95.