N64 and DC will run a lot of games well, usually the more popular ones in the library. It's not about what specs the device has unfortunately, the emulators are still young and accuracy is way down so in order to improve this the emulators need to be worked on. You can brute force it with specs to a certain extent which may reduce stuttering but the glitches and crashes will still happen. Gotta say for the most part I found N64 to be really good on a dual core device though, you can certainly play a lot of games without any problems. Not sure it's using anything more than two cores though, probably just one in fact. Performance on the XD will be pretty much exactly as on the Q9, it's the same specs. I would hang fire on ordering though until proper user reviews come in, early impressions of the build quality and controls seem to be extremely good though.
