It’s pretty incredible how well it works. I installed Arch with Plasma 6 on a 2015 T450 thinkpad and it was so crazy how fast everything was.
Felt like a brand new machine, almost a decade old, and bottom of the line specs for that model, but it still ran cutting edge Linux like it was meant to.
My other desktops are even older, but it’s the same with Debian 12 and Plasma, they are super responsive and stable. It’s pretty wild to see a desktop that’s over 10 years old feel smoother and snappier than Windows 11 on a 3 year old, enterprise grade laptop.