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Pro 4K support
The Udoo x86 is capable of supporting up to three 4K screens at once.
Pro Huge amounts of RAM
The Ultra version has 8GB of RAM, the Advanced version has 4GB and the basic version has 2GB (which is still more than most SBCs).
Pro Arduino compatible
The Udoo x86 comes with an embedded Arduino 101, with all upgrades enabled (including 6-axis accelerometer, gyroscope and Bluetooth).
Pro Decent graphics
Intel HD graphics 405 up to 700 MHz with 16 execution units.
Pro Energy efficient
Even though it sports Quad Core x86 next-gen CPUs made by Intel, it's pretty energy efficient as the complete Udoo board consumes less than 11 watts of energy at any given time.