for CPUs, our 32bit/64bit builds are documented as:
# We assume that our x86 baseline CPU is at least an
# i686 that supports MMX, SSE, SSE2, and SSE3.
pretty sure the Intel Atom D510 supports those things, so that shouldn't be a problem
whether ChromiumOS will work "out of the box" in the complete system is a different question. driver compatibility tends to be the common sticking point (like the graphics card).
-mike