12600KF 20 Degree Core Temp Delta?

anthei · April 30

Core 0 and Core 5 (Cores 1 and 3 for that matter) show a temperature difference of 20 degrees when under any kind of heavy all-core load. I'm using an Arctic LF II 280mm AIO cooler, and I've reseated and repasted about five times to check for uneven pressure, but everything seemed fine. I also tried using the Thermalright contact frame and the stock ILM, but there was no change in the results. Same results with the 4.5ghz Stock config.

Then to be sure I swapped in my 12400f and overvolted it to 1.3V to check for any uneven core temperatures. As you can see this setup was completely fine.

Is my 12600KF faulty? Should I refund it? At this point I genuinely cant think of another possibility.

QuantumSingularity · May 1

If it's not crashing and burning, it's technically not faulty. Try to assign affinity to only P-core 0 of some relatively heavy process and check how it's performing. If it hits close to 100°C then nothing wrong. Not all cores are created equal, sometimes there is the opposite of silicone lottery win - lottery loss. Also check core VIDs and see if it receives less power than the others.