I've got only one OpenBSD-powered machine. It's modified thin client, Neoware EON2000.
CPU: AMD Geode GX1 300MHz
RAM: 128Mb SDRAM (without swap)
HDD: 2GB PQI 120x Compact Flash
NET: integrated + PCI network cards, unfortunately both with Realtek 8139 chip
O/S: OpenBSD 4.6/i386
task? home server. IRC client, torrent client, Apple Filing Protocol, soon maybe VPN client etc. everything without graphical interface