Question Can I install Windows 10 on this system ?

I was under the impression when I first built my old 12th gen system I was only able to install win 11?

12700k
ddr5 6000
6950xt
850 psu
asus z690 mobo

am I able to do a clean install of win 10?
 
I was under the impression when I first built my old 12th gen system I was only able to install win 11?

12700k
ddr5 6000
6950xt
850 psu
asus z690 mobo

am I able to do a clean install of win 10?
Yes.

Assuming your hardware is in working order and you have a valid Windows 10 installer and license.

What exactly gave you the impression you could not?
 
I remember reading it somewhere
You can install windows 10 but windows 10 is worse at handling the two different core types so it could have worse performance under some conditions.
Also windows 10 is going end of life in less than a year so you will be left with an unsupported OS.
It's not that you can't, it's that it's not worth it.