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I've been constantly checking posts here to check for updates. In a recent post regarding 13900k faulty core, intel staff tells the op to contact for RMA after a few discussions, and tells another op to email contact them in another post. I'd say they should be aware of the issue now. However, this post may be marked as closed by them so no more intel guy's attention. Maybe you should try direct RMA to catch their attention.
For now, I do recommand to use the free version of Process Lasso and set affinity rule to find the specific faulty core and ban it for good. (the process match in setting affinities uses Regular Expression, so a process match of * or *.* may apply the affinity to every single process to prevent any use of that core.)
Edit: I previosly only set affinities to heavily used applications instead of every tasks, I tried after I posted this, and it keep reporting error setting affinity to system tasks like svchost.exe (error log keeps logging). You may wish to only apply for the applications you commonly use, in that case Task Manager could be enough (I don't know if Task Manager is setting it permentantly, but Process Lasso does set it permentantly until rule being removed.) That makes my computer run without crashes eversince.
