De otra review:
The DLP650TE DMD in this projector has a native resolution of 1920 x 1080, with all those tiny mirrors pivoted four times each frame to allow sequential delivery of four sections of a full Ultra High Definition (3840 x 2160) image to the screen.

Beneath the mirrors is a two-dimensional array of 1-bit CMOS memory cells, and the deflection angles of the micromirrors are individually controlled by changing the address voltage of those cells.*

TI has long made these DMD chips in a variety of physical sizes, but the key ones for home cinema use have been either 0.47 of an inch or 0.65 (or 0.66) of an inch. Larger would be better in quality terms if it allowed a larger pixel size, which could deliver more light, and so less noise