Yeah, i was referring to the CPU, my bad, what would be the more affected section / hardware from the switch?
IMHO overclocking for emulation is really not worth it, its a good thing that it exist, but not for the emulation, as there are even lower devices that can handle N64 such as the Xperia Play, that was using a Single Core MSM8255 running a 1GHz, and even more devices with literally 800mhz processors.
Dynarec would be cool if it comes at his time, overclocking could really improve thing for games that lag spikes, or suffer from slowdows, but IMHO, not for PSP / N64 emulation, in long term speaking.