ARM boards25. Jun '14
Introduction
This blogpost covers most SoC boards:
Raspberry Pi
Raspberry Pi popularized the ARM board concept:

Raspberry Pi model B
The truth is that it's using Broadcom BCM2835 SoC which has louzy specs for mainstream use:
- ARMv6 with floating point and SIMD extensions clocked at 700MHz
- 512MB RAM
- 100Mbps ethernet
- HDMI video output
- 1080p h264 video decoder
- Videocore 4 GPU
- 2x USB 2.0 ports
- 3.5mm audio jack
Boot methods:
- FAT32 partition on SD card
Community is of course massive:
- https://github.com/raspberrypi/
- #raspbian @ Freenode IRC
Origenboard
Origen 4 Quad Evaluation Board is based on Samsung Exynos 4210.

Arndale board
Arndale has two boards, the latest one called Arndale Octa Board Package ships with Samsung Exynos 5420 octacore SoC:

The board seems to be manufactured by InSignal which is a Korean company. Pyrustek ships the board from Korea for 199 USD pricetag excluding VAT and customs.
Arndale Octa Board Package specs:
- Four ARM Cortex-A15 cores with max clock at 1.3GHz
- Four ARM Cortex-A7 cores
- 3GB LPDDR3e RAM
- 100Mbps Ethernet
- 1080p 60fps video decoder
- Mali T628 MP6 GPU
- HDMI 1.4a connector
- 1x USB 3.0 port
- 3.5mm audio jack output (24bit DAC @96kHz)
Boot methods:
- eMMC internal storage
- MicroSD (?)
Community:
HummingBoard
HummingBoard <http://imx.solid-run.com/wiki/index.php?title=HummingBoard_Hardware> is a Raspberry Pi compatible board oriented mainly towards developers:

HummingBoard will most probably sport following spec based on one of Freescale i.MX6 chips:
- Quad-core ARM Cortex A9
- 2GB RAM
- Broadcom BCM4329 802.11abgn wireless with Bluetooth 2.1
- Gigabit ethernet
- HDMI connector
- LVDS connector
- Coax S/PDIF digital audio output
- Infrared receiver
- MicroSD memory card slot
- mini PCI-E connector
- mSATA connector
CuBox
CuBox-i4pro is a pretty neat ARM box:

- Quad-core ARM Cortex A9 clocked at 1GHz
- 2GB DDR3
- Vivante GC2000 GPU
- Gigabit ethernet
- HDMI video/audio output
- eSATA port
- 2x USB2.0 ports
Boot methods:
- MicroSD card
Cubietruck
Cubietruck is Chinese Allwinner A20 SoC based board:

Cubietruck spec:
- Dual-core ARM Cortex-A7 @ 1GHz
- 2GB DDR2 @ 528MHz
- 8GB NAND Flash
- Mali400 MP2 GPU
- CedarX 2160p video decoder
- Broadcom BCM4329 802.11bgn wireless with Broadcom BCM40181 Bluetooth 4.0
- HDMI digital video/audio output
- VGA analog video output
- SPDIF digital audio output
- 1Gbps Realtek RTL8211E wired ethernet
- 1x SATA 2.0 slot
- 2x USB2.0 host
- 1x USB OTG
Boot methods:
- MicroSD card via on-board slot
- Internal NAND Flash
- SATA (via kernel and u-boot on internal NAND Flash)
Community is alive and kicking and among Chinese ARM SoC-s it is probably the most progressive and upstream friendly:
- #linux-sunxi and #cubieboard @ Freenode IRC
Radxa Rock
Radxa Rock is another Chinese Rockchip SoC based ARM board:

Rockchip RK3188 SoC:
- Quad-core ARM Cortex-A9, 2GB RAM
- 8GB NAND Flash mälu
- MicroSD memory card slot
- Mali400 GPU
- HDMI pesa
- 100Mbps LAN
- 150Mbps 802.11bgn
- Bluetooth 4.0
- S/PDIF heliväljund
- 2x USB2.0 host pesa
- 1x USB OTG pesa
Community:
- #linux-rockchip @ Freenode IRC