[Rafael] just made a little library that allows you to interface these modules to the Atmega328p-based Arduino UNO in order to gain some memory space.

The 86Duino Zero features, of course, an x86 Vortex86EX processor running at 300 MHz. This board also features 128 MB of RAM, 8MB of Flash and the usual compliment of Arduino pins in a Leonardo ...

The Arduino Nano and Uno are equipped with very similar processors (the chip that essentially serves as the brain of the board). The Nano features an ATmega328, while the Uno sports an ATmega328P.