Intel Atom PCs are normally poor deals. For the same price the OP can build a full AM3(+) PC that is just as small, has over 10x the CPU power, and similar or better graphics horsepower. Or if low power consumption is a real big concern, then a build based on the C-Series or E-Series APU would provide much better CPU capability and have lower power consumption compared to the Atom + dedicated ION GPU.
Using up the entire $600 budget (perhaps a good idea to complement the rest of the parts choice would be an SSD for ultra fast boot times?) the result could be way, way better.
What else are you concerned with, turtlesftw? Do you like a PC that is small form factor and out of the way (I love SFF PCs), or lower power consumption? Are you interested in solid state drives for fast boot or is a regular HDD just fine with you? Do you need PC only (i.e. use existing monitor, kb, mouse) or start anew and get new peripherals, monitor, OS, etc.?
My thinking is that the perfect PC for you would utilize the AMD socket FM1 platform and the new Llano AMD APUs, for $600 or under.Edited by xd_1771 - 7/25/11 at 7:26pm