Comparison of current ARM cores
http://en.wikipedia.org/wiki/Comparison_of_current_ARM_cores
RasppberryPi
SoC: Broadcom BCM2835 (CPU + GPU. SDRAM is a separate chip stacked on top)
CPU: 700 MHz ARM11 ARM1176JZF-S core
GPU: Broadcom VideoCore IV,OpenGL ES 2.0,OpenVG 1080p30 H.264 high-profile encode/decode
Memory (SDRAM):256 MB / 512 MB
MK802 II
Main Chip: Allwinner A10/ 1GHz Cortex-A8
Memory: 1GB
Storage: 4GB, Micro SD 2-32GB Memory
GPU: Mali400
Radxa Rock
SOC Rockchip RK3188
CPU ARM Cortex-A9 quad core @ 1.6Ghz
Memory 1GB / 2GB DDR3 @ 800Mhz
Storage 4GB / 8GB NAND Flash, Micro-SD SDXC up to 128GB
GPU Mali400-mp4@533Mhz, OpenGL ES 2.0
