ODROID-C4 vs Radxa Rock 3A
Side-by-side comparison of features, pricing, ratings, and alternatives.
The ODROID-C4 is a compact single-board computer powered by an Amlogic S905X3 quad-core ARM Cortex-A55 processor running at up to 2.0 GHz. Designed for developers, hobbyists, and tech enthusiasts, it offers significant performance improvements and lower power consumption compared to its predecessors, making it an ideal choice for home servers, retro gaming consoles, and embedded projects. Featuring 4GB of DDR4 RAM, Gigabit Ethernet, and four USB 3.0 host ports, the ODROID-C4 provides reliable connectivity and data transfer speeds. It supports up to 4K UHD video output via an HDMI 2.0 interface and utilizes an eMMC socket along with a MicroSD slot for flexible operating system storage options.
The Radxa Rock 3A is a versatile single-board computer designed for developers, IoT enthusiasts, and makers seeking robust computing power in a compact form factor. Equipped with a quad-core ARM Cortex-A55 processor and up to 8GB of LPDDR4 RAM, it delivers reliable performance for edge computing, media streaming, and home automation projects. Featuring comprehensive connectivity options including M.2 NVMe SSD support, Gigabit Ethernet, and multiple USB ports, the board bridges the gap between desktop-class utility and embedded hardware flexibility. It supports various Linux distributions and Android, making it an adaptable platform for prototyping and custom industrial deployments.
- High performance-to-price ratio
- Four native USB 3.0 ports
- Efficient thermal design with low power consumption
- Robust community support and documentation
- High-speed NVMe SSD support via M.2 slot
- Reliable quad-core ARM performance
- Dual display capabilities up to 4K
- Extensive operating system support
- No built-in Wi-Fi or Bluetooth adapter
- Limited availability of official accessories compared to Raspberry Pi
- Power supply sold separately
- Requires separate purchase of power supply and storage
- Limited community documentation compared to older Raspberry Pi models
- Wi-Fi and Bluetooth require an optional module
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The Verdict
AI-generated from listing dataIf you need a low‑cost, well‑supported board with strong USB‑3.0 and Ethernet out‑of‑the‑box, the ODROID‑C4 is the safer default; choose the Radxa Rock 3A if you require NVMe storage, PoE Ethernet, or dual‑display capability and are willing to buy extra modules.
Key differences
- •Storage: Rock 3A offers an M.2 M‑Key slot for NVMe SSDs; ODROID‑C4 relies on microSD/eMMC only.
- •Ethernet: Rock 3A supports Power‑over‑Ethernet, ODROID‑C4 does not.
- •USB: ODROID‑C4 provides four native USB 3.0 ports; Rock 3A has a mix of USB 3.0, USB 2.0 and USB‑C.
- •Display: Rock 3A has dual HDMI/DSI outputs; ODROID‑C4 has a single HDMI 2.0 port.
- •Price range: ODROID‑C4 fixed MSRP $55; Rock 3A varies $35‑$75 depending on RAM.
Performance
Rock 3A’s Cortex‑A55 runs up to 2 GHz, slightly higher than ODROID‑C4’s unspecified clock.
Build quality
Both boards have similar dimensions and weight; no data on chassis robustness.
Connectivity
Rock 3A adds PoE Ethernet, optional Wi‑Fi/Bluetooth, and a USB‑C port; ODROID‑C4 lacks these.
Power & efficiency
ODROID‑C4 is AC powered and marketed for low power consumption; Rock 3A is USB powered.
Compatibility
ODROID‑C4’s 40‑pin GPIO and four USB‑3.0 ports give broader immediate peripheral support.
Price & value
ODROID‑C4 has a single MSRP $55; Rock 3A can cost up to $75 plus extra storage and power modules.
Warranty & support
Both offer a 1‑year warranty; community support is stronger for ODROID‑C4.
Choose ODROID-C4 if…
Ideal for hobbyists needing cheap, ready‑to‑run SBC with strong USB and Ethernet.
Choose Radxa Rock 3A if…
Best for developers needing fast NVMe storage, PoE, or dual‑display setups.
Common questions
Which board is cheaper overall?
ODROID‑C4 has a fixed MSRP of $55; Rock 3A ranges $35‑$75 and requires extra purchases for storage and power.
Can I use Wi‑Fi or Bluetooth without extra hardware?
No; both boards need optional modules for Wi‑Fi/Bluetooth.
Do both boards support 4K video?
ODROID‑C4 supports 4K @ 60 Hz via HDMI 2.0; Rock 3A also supports up to 4K on its HDMI 2.0 output.