a pallet of 4th gens? i have a dozen left here from around that era that i can't get rid of without literally giving them away. they're 'tolerable' for a gui linux or win10 with an ssd, but the 'performance per watt' just isn't there with hardware this old. i used a few of them (none in an always-on role, though), but the rest just sit in the corner, without home nor purpose.
these 800 g1s are, iirc, 12vo, so upgrade or reuse potential is a bit limited. most users would want windows, and win10 does run 'ok enough' on 4th gen, just make sure they're booting from ssd (120gb minimum). but they'll run into that arbitrarily-errected wall-of-obsolescence with trying to upgrade or install win11 when win10 retires in ~ 18 months (you can 'rufus' a win11 installer, but there's no guarantee that you will be able to in the future). that limits demand and resale value of pretty much all the pre-8th gen hardware.