The Raspberry Pi Model B 2/3 is a popular, low cost, credit card–sized single-board computer using a quad core ARM Cortex-A7 or ARMv8 Broadcom SoC with 1 GB DDR2 RAM.
Featuring an AllWinner A20, it contains 2 ARM Cortex-A7 MPCore CPUs and 1 GB DDR3 RAM.
Featuring an ARM Cortex-A8, it has 512 MB of DDR3 RAM, a processor clock of 1 GHz, and also includes 4 GB of internal eMMC flash memory.
Written in the resource friendly language Go, it's feature list as a Git service is impressive. Visit the project website to learn more.
When you need a heavily customized, minimal, embedded Linux build, Buildroot is right there knocking at the doorstep. Buildroot does the heavy lifting to compile the kernel and all of userspace into a final uSD card image.
In 10 minutes you can have your own full featured git server running in the closet consuming very little power.