Radxa ROCK 3B
Benchmarks, specifications, and real-world performance data
Tested by Bret Weber Last updated
7-Zip
4,683 MIPS
multi-core combined
Power draw
6.0W load
3.4W idle
Price
$51.00
Performance Summary
At the heart of the Radxa ROCK 3B sits the Rockchip RK3568, giving this ARM board 4 CPU cores alongside 2GB of memory. In our testing it reached 4,683 MIPS in multi-core 7-Zip compression. Raw floating point throughput came in at 8.07 GFLOPS in Linpack. It sips 3.4W when idle, rising to 6.0W under full load.
| Specification | Radxa ROCK 3B 2GB RAM |
|---|---|
| Basic Specifications | |
| Price | $51 |
| RAM | 2GB |
| SoC | |
| Architecture | ARM |
| CPU Cores | 4 cores 4× Cortex-A55 @ 2.0GHz |
| Hardware Video Decode | H.264, HEVC, HEVC 10-bit, VP9, VP9 10-bit, MPEG-2, MPEG-4 Part 2, MJPEG Up to 4K60 |
Price History
$51.00 at Allnet China, unchanged since 2 October 2026. Checked daily.
- Official store · Allnet China$51 Out of stock
Every figure above comes from hardware run in-house by Bret Weber, on the exact OS build, kernel, firmware and boot device listed here. Boards are tested to a fixed procedure so results stay comparable between them: see our testing methodology for how each benchmark is run.
CPU Performance
Processor performance across single and multi-core workloads
7-Zip Benchmark
Higher Scores are Better
High Performance Linpack
Higher Scores are Better
UnixBench
Higher Scores are Better
CPU Mining (cpuminer-multi)
Higher Hashrates are Better
Memory Performance
Memory bandwidth and throughput benchmarks
Storage Performance
Disk I/O throughput measured with FIO
fio Storage Performance - microSD
Higher Speeds are Better • Raspberry Pi 64GB (64GB microSD)
fio Storage Performance - eMMC
Higher Speeds are Better • Radxa eMMC (32GB eMMC)
fio Storage Performance - M.2 NVMe
Higher Speeds are Better • Crucial P5 Plus (1024GB M.2 NVMe)
Network Performance
Ethernet and WiFi throughput measured with iPerf3
iPerf3 Network Performance
Higher Speeds are Better
Media & Video
Jellyfin transcoding and FFmpeg video decode and convert speed
Jellyfin Transcoding
Simultaneous real-time streams, more is better
2 more scenarios and the CPU and hardware stream counts are in the benchmark table · every board ranked
Video Decoding
Software decoding on the CPU, higher fps is better
8 more workloads and the hardware decode speeds are in the benchmark table · every board ranked
Power & Thermal
Power consumption at idle and under various workloads
Power Consumption
Lower is "Better"
Frequently Asked Questions
How much power does the Radxa ROCK 3B use?
We measured the Radxa ROCK 3B drawing 3.4W at idle and 6.0W under sustained CPU load.
How much does the Radxa ROCK 3B cost?
The Radxa ROCK 3B sells for $51 at the official store (Allnet China) as of 25 October 2026 for the 2GB RAM configuration, although it was out of stock at the last check. The price has not changed since we began tracking it on 2 October 2026. Prices are in USD before tax and shipping.
See how the Radxa ROCK 3B stacks up against another board, side by side.