Engineer: Wow, thats some really stylish cluster 😀 What a waste... 😀 Anyway... these PCs are damn cute, but expensive I guess. I'd prefer something like a Dual Athlon XP based cluster, e.g. 100 Dual Athlon boards with 200 Dual Athlon XPs. The boards should have on board LAN. Then give em RAM depending on the project (how much is needed, how fast), fit a few coolers on them and stack the system together... then put it all in a conditioned room (7°C?). Connect all to a network (if possible BNC would be cool... save the cost for a router/switch and wouldn't be such a mess 😀 , and I think/hope that little traffic to boot these little boxes (Linux with client) from a server (the only system with HDD) won't be too much). Thats all I guess... and cheaper.