What are these things? We bought an AMD3100+ and mobo from a store, and turns out the sound chip was busted, so we returned it. They sent back an upgraded mobo, but it has a PRO3400A CPU in it. Control Panel in XP Pro tells me its an AMD2600+.... Not even close to a 3100+. The thing is running fast enough, but it dsiturbs me that its not even 'badged' as an AMD, and the numbers are a total crock in relation to CPU speed. Anyone know what these things are?