Hi RT,
I run my machine on a dual core Atom Mini-ITX single board PC. It has only the built-in on-chip Intel graphics. The graphics
have been described as awful but they are entirely fine for Mach CNC. Fitted with 4Gb RAM and a 64G mSSD. Note that I've
used a 32 bit Windows 7 Embedded OS. As a consequence of the 32 bit OS only 3Gb of RAM can actually be addressed and because
the graphics share the memory the actual practical memory available to the CPU is 2.25Gb
All-in-all the wee Atom 'couldn't pull the skin off a rice pudding' and yet it runs Mach4 and the ESS seamlessly and it ran Mach3
and two parallel ports seamlessly prior to that.
The only time I notice the Atom struggling is when I load a PCB isolation routing file of 5Mb or more, its slow to load and very slow
to draw the initial toolpath. Thereafter it runs likes a dream and as far as I'm concerned the graphics are perfect.
Smurh has posted in the past about using a 'Mud' board, a slightly higher spec version of my Atom and he describes similar results,
ie Mach4 runs fine but struggles, or rather is slow, to load big files.
Craig