Not ITX, but if you are willing to accept a custom form factor (which are even smaller) check out ServeTheHome's Project TinyMiniMicro, they are great bang/buck

Not ITX, but if you are willing to accept a custom form factor (which are even smaller) check out ServeTheHome's Project TinyMiniMicro, they are great bang/buck for that kind of thing. If you can wait for some company to go through an upgrade and dump a load up on ebay or whatever, you can get particularly good deals. https://www.servethehome.com/tag/tinyminimicro/ https://www.servethehome.com/tag/tinyminimicro/ They aren't going to be quite as small or efficient as a Raspberry Pi or equivalent, but instead you get full x86-64 cores, and they are still pretty small and efficient.