I too thought only one of the pair could be in use at a time, but MP is allowed. Its unlikely for a phone to allow the "MP" mode but the tablet/netbook variants could with their larger batteries.
The performance ultimately will rely on the software switcher. The intelligence behind where the threads get assigned. Apps will have to be profiled for efficiency which is the biggest weakness.
The performance ultimately will rely on the software switcher. The intelligence behind where the threads get assigned. Apps will have to be profiled for efficiency which is the biggest weakness.