What is so impressive then about this linux based pc? The amount of power available in such a small size.
For a machine at best twice the size of your mouse, it hosts some impressive hardware.
In a space roughly twice the size of a raspberry pi, this machine comes with a quad-core Apollo-Lake Intel Celeron J3455 processor with embedded Intel HD Graphics 500, 4 gb of ram, available up to 8 gigs if you get the pro version.
Here is an "exploded" image to show you the construction:
The top heatsink is slightly taller than before for the all-metal black housing to provide better passive cooling for the upgraded specs. The small size of the unit is still very impressive." -https://blog.linuxmint.com/?p=3528
Here it is next to a cup of coffee:
If you like the novelty of a ultra small pc, or if desk space is at a premium, this machine is an excellent buy. For $299 you can pick one of these up, but with double the hard drive space and double the ram, I would spend the extra 46 dollars and get the pro model.
There is quite a bit more information available at Linux Mint's blog, https://blog.linuxmint.com/?p=3528.