for full nodes i highly recommend mini pc's

they don't need to be very performant, 4gb is enough even, just the disk needs to be decently fast and big - most of the data processing happens in one thread by necessity of the way the chain structure works

it's been a while since it was remotely practical to use a HDD, though probably a loud screaming 10k RPM 5.25 might almost do it

but for basics, just a 2.5" SATA SSD and a second one to dump the chain onto once in a while so if it has a failure like nostr:nprofile1qythwumn8ghj7un9d3shjtnwdaehgu3wvfskuep0qythwumn8ghj7un9d3shjtnswf5k6ctv9ehx2ap0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qgwwaehxw309ahx7uewd3hkctcpzdmhxue69uhhqatjwpkx2urpvuhx2ue0qy2hwumn8ghj7mn0wd68ytn00p68ytnyv4mz7qgawaehxw309ahx7um5wghxy6t5vdhkjmn9wgh8xmmrd9skctcqyqpk2v724perw62x6nj0m6jvrgzyrmdr3j3dnk2p0wekqpkt42l4s3v0jrr is talking about you don't have to wait forever to have it come back online