What would you benchmark, raw CPU numbers... they are useless.

The NIT's primary goal is reasonable performance for a long lived mobile device. The CPU is not going to win any awards for speed, but in horsepower per watt. Add in DSP optimized code and it can do most reasonable things you might want to do on such a small device.

The two most constraining factors for this device have nothing to do with the main CPU at all. One is the lack of more hardware codecs like h264; the second is the lack of any video acceleration. Ram and IO constraints would come in a close third.