Lets see I have several old ones not sure if I should say my Viao is old yet listed with no concern to performance
Intel Celeron, 256 RAM, and a Mobo
AMD K8N or K8 (I forget), 48 RAM (upgraded), mobo
Pentium II, 32 RAM, Mobo with ethernet expansion card
Two Apple II Plus's
Of these I have the Celeron and the and Pentium II networked and working. The AMD K8/K8N is at my upstairs, and the Apple II Plus's are in the darkness of my basement. I keep my Computers till they catch fire or die of old age.