That's an Intel Desktop Board D510MO. It has a single chip, dual-core with Hyperthreading Intel Atom Processor D510. (Here's a direct link to the large PDF Product Guide.) It's an ultra-simple little board, but it does its job well.

The processor is 1.66 GHz; and has two physical cores, each of which, via the magic of Hyperthreading, pretends to be two cores; so it appears to the OS as if it is four cores.

I have the predecessor to that, the D945GCLF2; as well as your board's single-core little brother, the D410PT. (Wow, finding all those links makes me despise what Intel did with their support website. Back when I worked there doing motherboard support, it was full of nice clean, simple HTML pages.)