Hardkernel's ODROID line covers low-power Arm boards and x86 boards. Three representative models, per Hardkernel's product pages:
ODROID-M1S: low-power gateway with real storage
| ODROID-M1S | |
|---|---|
| SoC | Rockchip RK3566 |
| RAM | LPDDR4; sold in 4 GB and 8 GB versions (plus a 2 GB "Lite" version) |
| Storage | 64 GB eMMC soldered on board, M.2 M-key slot, PCIe only (NVMe): M.2 SATA does not work; PCIe 2.1 x1, slower than the original M1 |
| Network | gigabit Ethernet |
| GPIO | 40-pin header plus a 14-pin header |
| Power (Hardkernel's measurements) | about 1.0 W idle headless, about 0.7 W with Ethernet unplugged, about 3.2 W CPU stress test |
A strong fit for always-on IoT gateways: no SD card to wear out, low idle power, NVMe for databases or recordings.
ODROID-N2L: compact and no Ethernet
| ODROID-N2L | |
|---|---|
| SoC | Amlogic S922X, 12 nm: 4x Cortex-A73 @ 2.2 GHz + 2x Cortex-A53 @ 2 GHz |
| RAM | 2 or 4 GB LPDDR4 |
| Storage | eMMC module connector (8–128 GB modules) |
| Network | none onboard. Hardkernel removed Ethernet (and more) versus the N2+, and notes that USB 3.0-to-Ethernet adapters cannot be used reliably |
| GPIO | 40-pin header, including 2 ADC inputs (10-bit, 1.8 V max) |
Good for standalone embedded systems (kiosks, displays, local control) that don't need wired networking.
ODROID-H4: x86 in SBC size
| ODROID-H4 series | |
|---|---|
| CPU | Intel Processor N97 (x86-64) |
| RAM | DDR5 SO-DIMM (single channel, a limitation of the Alder Lake-N platform) |
| Storage | SATA ports (2–4 depending on variant) and NVMe |
| Network | 2.5GbE (up to four ports on some variants) |
Choose x86 when you need software only built for amd64, a standard PC boot flow, or SATA disks for a NAS. Note: at the time this was written, Hardkernel's product page said H4 production and sales were suspended because of Intel CPU supply issues. Check availability before designing around it.