Spitfire is targeted at moving the AMD Athlon to the value space, and it will be only available in a socketed form. Thunderbird is capable of being introduced in both a cartridge and a slot, but we haven't given out any pricing details yet. Got to wait a little while. We haven't disclosed any details on any of the specifics on the Thunderbird core and whether current infrastructure products will support it. See my response above regarding Thunderbird.
Spitfire is targeted at the value PC space.
Can't really speculate on where our unannounced product will compete vs. Intel's unannounced products. Spitfire is planned to only be available in a Socket A configuration. Don't want to handicap the CPU by making it dependent on a lower performing infrastructure. We haven't disclosed that level of detail yet. Q2 will be here soon enough and I'll be able to spill all the beans at that time.