It's supposed to be possible to run normal Thunderbird processors (non-MP) in the new Tyan Tiger MP board. I am just wondering what you lose by doing this. Do you still have SMP capability for example? Are there reasons not to do this? Seems like a less expensive solution than the 1.2 GHz MP processors if you could use two 1.4 GHz Thunderbirds in their place and save $100 by doing so.