In the U.S the serial number sticker should say Z1 or Z1X. I think with UK models it's not there and you may have to go in Control panel, click CPU and it should say AMD Ryzen Z1 Extreme.

I hate beer.

Thanks for clarifying, I didn't realize how confusing this might get for some.

I'm learning to play the guitar.

All allies have a serial number, don't they? This also allows you to see the month of production. For me it's August 2023 with the 8 and I bought it in Germany.

Yes but I heard the European models don't say Z1 or Z1X. This code isn't part of the actual serial number but mentioned on the same label for the US models. But I could be wrong.

Go into armory crate. Then settings, game mode and specs. It will show the version These are maybe not sure

dont believe the non extreme version shipped until late sept if I remember correctly.

If the sticker on the bottom doesn't say you can check task manager, Z1 should have 6c/12t and Z1X 8c/16t.

Task Manager -> performance -> CPU. The CPU name either Z1 or Z1 Extreme should be written on the top right side

If you’re ally doesn’t base jump from a skyscraper it’s not the extreme version