Whea Internal Parity Error on 10850K stock

Hi my pc:

108500K stock 4800mhz

2x16 GB DDR4 GSKILL 3000mhz XMP

Seasonic Tx-850 Ultra Titanium

Gigabyte Rtx 3090 Gaming OC

Aorus Z490 Pro Gaming

1 TB SSD

My pc i have 6 months,never had any WHEAS. I tested Control, Quake 2 rtx, Metro Exodus,3dmark port royal,battlefield 5,Serious Sam 4 and other games. No Wheas during 6 months,no bsods,no crashes.

My system is updated to newest Win 10 H20.

Today i run again Metro Exodus Enhanced Edition for 6 hours. After exiting game i check event logs and saw 1 WHEA Internal Parity Error.

The exact WHEA 19 was like this:

error source: unknown error source error type: internal parity error processor ir: 3

And my question is why one single WHEA appeared after 6 months on stock cpu?!

I have only XMP on. But memtest no errors. Rma cpu then?

MciStat0x9000004000010005

It just popped after 7 hours in Metro Exodus.

I run Metro Exodus again for 10 hours no whea. Then again for 15 hours and no whea. So no worries about that once fluke?

@sew333: But do you have Windows or game related crashes? getting error in even viewer doesn't mean anything at all, there're a lot of false positive logs over there. You check them errors only if you have any sort of problem.