Hi Jed G.
I won the lottery, but there was no prize.
My Core Ultra 9 275HX mobile passed all stress tests without failure (XTU/diagnostic tool..etc), getting 1P-Core essentially dead (sensor failure/ISH), with a very significant drop in performance over 1 P-Core and thermal throttling overheating all over the package. During heavy taskts (98C -104C) with CPU/dGPU heavy loads, a massive thermal throttling happens and performace downs dramatically.
All measures have been taken, and there's nothing that can be done. (the notebook was already RMA and came back in the same way it was sent, they made nothing, only bench tests, even I sending video proofs of this one P-Core behavior, another warranty/RMA claim was denied, etc.)
The notebook manufacturer guarantees that the CPU is perfectly fine and will not reapply the thermal interface.
It seens the manufacturer don't follow Intel Profiles, delivering 175W PL1/PL2 and almost 1.3v hard coded by BIOS. (with all updated bios releases)
Bios it's under an overclock protection that needs to be disable to be accessed for undervolt options, also needing to turn off intel TXT, with an offset protection for just -0.030v for undervoltage. Rendering impossible to use this configuration without voiding the warranty with almost none results for just too little offset. It's a very simple BIOS with almost none configuration to tweak.
Thank you.
Best regards.
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