RaspArch is a 'remaster' of Arch Linux ARM. The original compressed system is of 231 MB. After I have added the LXDE Desktop environment, Firefox, Yaourt, Pulseaudio and Gimp the system increased to 700 MB. RaspArch is a 'ready-to-go' ARM system. It can only run on a Raspberry Pi 3 or Pi 2 computer.
Raspberry Pi 3 model B was made in February 2016. It has a 1.2GHz 64-bit quad-core ARMv8 CPU and 1GB RAM.
MORE about RaspArch
When you have installed RaspArch to your Micro SD Card you can use the system like any other Arch Linux system. I.e. install new programs etc. Arch motto is KISS (Keep It Simple Stupid). RaspArch uses kernel 4.4.35-1-ARCH and the LXDE Desktop environment.
WHO should run Arch Linux/RaspArch?
My answer: The system fits the 'advanced' Linux user/enthusiast, who would be willing to run an occasional command from time to time.