Having used hundreds and hundreds of Tyan boards over the past year working in DC Operations, I'll toss in my two cents to say I don't look up that highly at Tyan much anymore. Their QC is pretty lacking. I've seen tons of boards that simply don't have the NIC showing up period, won't turn on, turn on and turn off, etc. Whereas Supermicro, I've probably seen about one or two hundred so far as we started using those, and they are much more reliable. Now mind you, when the Tyans work, they do work well (assuming no problems), but they're not the bullet proof solution I thought they were before working with thousands of servers.