I tried to reply to an older thread, but they're all posted too long ago. Yes, I know there are other threads on it, but I just want to add something. Maybe it's useless info that's already been said. *shrug* I believe this runs on the same 624MHz ARM (Advanced RISC (Reduced Instruction Set Computing) Machine) that is found on things like the ipaq HX 4700 and the Dell Axim x30/x50/x50v/x51. It's very much underclocked and is easily capable of the full 624mhz without worries of overheating. It would get warm, but that's about it. Processors like this are designed to run in conditions where active cooling is hard to come by, even passive cooling. Battery life I'm sure would be an issue, though, which is probably why it was underclocked in the first place.