Intel Atom z520
Here are some things about it:
My rating of it: 6/10
Andres rating: 3/10
Schlompi rating: 8/10
A very low-power notebook cpu. Supports up to 2GB of ram. It's typical power dissipation is 0.22W. It operates at 1.1V. It's very small.
Contact me on discord: gemmebacon