Radxa ROCK 3C

Benchmarks, specifications, and real-world performance data

Tested by Bret Weber Last updated 21 September 2026

$40.00Buy on Amazon Buy on AliExpress Buy from Radxa Official product page

7-Zip

4,755 MIPS

multi-core combined

Power draw

4.3W load

2.3W idle

Price

$40.00

Performance Summary

The Radxa ROCK 3C is an ARM single board computer built around the Rockchip RK3566, pairing 4 CPU cores with 2GB of RAM in this configuration. In our testing it reached 4,755 MIPS in multi-core 7-Zip compression. Raw floating point throughput came in at 8.20 GFLOPS in Linpack. We measured 2.3W idle and 4.3W loaded power consumption.

Specification	Radxa ROCK 3C 2GB RAM
Basic Specifications
Price	$40 AMZALIOFF
RAM	2GB
SoC	Rockchip RK3566 Mali-G52 2EE NPU (1 TOPS)
Architecture	ARM
CPU Cores	4 cores 4× Cortex-A55 @ 1.8GHz

Connectivity
USB Ports	4× USB ports 3× USB-A 2.0, 1× USB-A 3.0
Display Ports	1× HDMI 2.0
Ethernet	1.0Gbps (PoE via HAT)
WiFi	802.11ac
Bluetooth	5.0, BLE
Storage & Expansion
SATA Ports	None
M.2 Slots	M-key PCIe 2.0 x1 (2230)
PCIe Support	N/A
Power & I/O
Power Requirements	5.1V
Power Inputs	GPIO, PoE+ HAT, USB-C
GPIO	40-pin RPi compatible
Features
Real-Time Clock	No
Power Button	Yes
Fan Header	Yes
Mainline Linux	No
Armbian Support	Community

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Price History

$40.00 at Allnet China, unchanged since 12 September 2026. Checked daily.

Official store · Allnet China$40 Out of stock
AliExpress$44.33

Out of stock at that pricePrices are before tax and shipping.

Environment	Radxa ROCK 3C 2GB RAM
Last Tested	13 September 2025
System Configuration
OS Version	Armbian 25.11.0-trunk.180 trixie
Kernel Version	6.12.47-current-rockchip64
CPU Governor	performance
Hardware Setup
Boot Device	Crucial P5 Plus 1024GB (M.2 NVMe)

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.

Radxa ROCK 3C (2GB)

CPU Performance

Processor performance across single and multi-core workloads

7-Zip Benchmark

Higher Scores are Better

Single-Core Combined

Radxa ROCK 3C (2GB)1,373 MIPS #64 of 118

1,373 MIPS #64 of 118

Multi-Core Combined

Radxa ROCK 3C (2GB)4,755 MIPS #65 of 113

4,755 MIPS #65 of 113

High Performance Linpack

Higher Scores are Better

Performance

Radxa ROCK 3C (2GB)8.2 GFLOPS #66 of 80

8.2 GFLOPS #66 of 80

Performance/Watt

Radxa ROCK 3C (2GB)1.37 GFLOPS/W #60 of 74

1.37 GFLOPS/W #60 of 74

UnixBench

Higher Scores are Better

Single Core

Radxa ROCK 3C (2GB)403 #62 of 118

403 #62 of 118

Multi Core

Radxa ROCK 3C (2GB)1,345 #65 of 109

1,345 #65 of 109

PassMark CPU

Higher Scores are Better

CPU Score

Radxa ROCK 3C (2GB)682 #58 of 96

682 #58 of 96

CPU Mining (cpuminer-multi)

Higher Hashrates are Better

Fastest Thread

Radxa ROCK 3C (2GB)1.63 kH/s #65 of 108

1.63 kH/s #65 of 108

Total

Radxa ROCK 3C (2GB)6.51 kH/s #65 of 104

6.51 kH/s #65 of 104

Memory Performance

Memory bandwidth and throughput benchmarks

PassMark RAM

Higher Scores are Better

RAM Score

Radxa ROCK 3C (2GB)564 #59 of 87

564 #59 of 87

AI & LLM Performance

Large Language Model inference performance

Ollama LLM Benchmark

Higher Scores are Better

Tokens/sec

Radxa ROCK 3C (2GB)2.69 tok/s #49 of 66

2.69 tok/s #49 of 66

Tokens/Watt

Radxa ROCK 3C (2GB)0.44 tok/W #53 of 64

0.44 tok/W #53 of 64

Tokens/Dollar

Radxa ROCK 3C (2GB)0.07 tok/$ #12 of 59

0.07 tok/$ #12 of 59

Storage Performance

Disk I/O throughput measured with FIO

fio Storage Performance - microSD

Higher Speeds are Better • Raspberry Pi 64GB (64GB microSD)

4K Random Read

Radxa ROCK 3C (2GB)11.4 MB/s

11.4 MB/s

4K Random Write

Radxa ROCK 3C (2GB)7.8 MB/s

7.8 MB/s

fio Storage Performance - eMMC

Higher Speeds are Better • Radxa eMMC (16GB eMMC)

4K Random Read

Radxa ROCK 3C (2GB)29.5 MB/s

29.5 MB/s

4K Random Write

Radxa ROCK 3C (2GB)37.9 MB/s

37.9 MB/s

fio Storage Performance - M.2 NVMe

Higher Speeds are Better • Crucial P5 Plus (1024GB M.2 NVMe)

4K Random Read

Radxa ROCK 3C (2GB)136.3 MB/s

136.3 MB/s

4K Random Write

Radxa ROCK 3C (2GB)81.6 MB/s

81.6 MB/s

Network Performance

Ethernet and WiFi throughput measured with iPerf3

iPerf3 Network Performance

Higher Speeds are Better

Ethernet Up

Radxa ROCK 3C (2GB)942 Mbps

942 Mbps

Ethernet Down

Radxa ROCK 3C (2GB)941 Mbps

941 Mbps

Power & Thermal

Power consumption at idle and under various workloads

Power Consumption

Lower is "Better"

Idle Power

Radxa ROCK 3C (2GB)2.3W #39 of 74

2.3W #39 of 74

Load Power

Radxa ROCK 3C (2GB)4.3W #44 of 105

4.3W #44 of 105

Ollama Max

Radxa ROCK 3C (2GB)6.1W #18 of 64

6.1W #18 of 64

Linpack Max

Radxa ROCK 3C (2GB)6W #18 of 75

6W #18 of 75

Benchmark	Radxa ROCK 3C 2GB RAM

7-Zip Single-Core Combined	1373 MIPS
7-Zip Multi-Core Combined	4755 MIPS
7-Zip Single-Core Compression	972 MIPS
7-Zip Multi-Core Compression	2823 MIPS
7-Zip Single-Core Decompression	1773 MIPS
7-Zip Multi-Core Decompression	6688 MIPS
Linpack Performance	8.203 GFLOPS
Linpack Performance/Watt	1.37 GFLOPS/W
UnixBench Single Core	403
UnixBench Multi Core	1345
PassMark CPU Score	682
CPU Mining Single Core	1.63 kH/s
CPU Mining Multi Core	6.51 kH/s

PassMark RAM Score	564

deepseek-r1:1.5b
Tokens per Second	2.69 tok/s
Tokens per Watt	0.44 tok/W
Tokens per Dollar	0.07 tok/$
Max Power	6.1W

Raspberry Pi 64GB (64GB)
Sequential Read 4K	13.2 MB/s (3398 IOPS)
Sequential Read 64K	21.2 MB/s (339 IOPS)
Sequential Read 1M	23.8 MB/s (23 IOPS)
Sequential Write 4K	5.9 MB/s (1521 IOPS)
Sequential Write 64K	10.8 MB/s (172 IOPS)
Sequential Write 1M	22.3 MB/s (21 IOPS)
Random Read 4K	11.4 MB/s (2921 IOPS)
Random Read 64K	20.4 MB/s (326 IOPS)
Random Read 1M	23.8 MB/s (23 IOPS)
Random Write 4K	7.8 MB/s (2021 IOPS)
Random Write 64K	18.6 MB/s (298 IOPS)
Random Write 1M	23.4 MB/s (22 IOPS)

Radxa eMMC (16GB)
Sequential Read 4K	35.4 MB/s (9076 IOPS)
Sequential Read 64K	79.0 MB/s (1264 IOPS)
Sequential Read 1M	177.2 MB/s (176 IOPS)
Sequential Write 4K	43.5 MB/s (11157 IOPS)
Sequential Write 64K	53.6 MB/s (857 IOPS)
Sequential Write 1M	54.2 MB/s (53 IOPS)
Random Read 4K	29.5 MB/s (7552 IOPS)
Random Read 64K	127.2 MB/s (2034 IOPS)
Random Read 1M	170.6 MB/s (170 IOPS)
Random Write 4K	37.9 MB/s (9704 IOPS)
Random Write 64K	51.7 MB/s (828 IOPS)
Random Write 1M	53.2 MB/s (52 IOPS)

Crucial P5 Plus (1024GB)
Sequential Read 4K	141.7 MB/s (36281 IOPS)
Sequential Read 64K	407.7 MB/s (6523 IOPS)
Sequential Read 1M	408.1 MB/s (407 IOPS)
Sequential Write 4K	84.7 MB/s (21694 IOPS)
Sequential Write 64K	395.1 MB/s (6321 IOPS)
Sequential Write 1M	395.7 MB/s (395 IOPS)
Random Read 4K	136.3 MB/s (34900 IOPS)
Random Read 64K	407.7 MB/s (6523 IOPS)
Random Read 1M	408.1 MB/s (407 IOPS)
Random Write 4K	81.6 MB/s (20897 IOPS)
Random Write 64K	395.1 MB/s (6321 IOPS)
Random Write 1M	395.6 MB/s (395 IOPS)

Idle Power	2.3W
Load Power	4.3W
Ollama Max Power	6.1W
Linpack Max Power	6W

Ethernet Upload	942 Mbps
Ethernet Download	941 Mbps

Frequently Asked Questions

How much power does the Radxa ROCK 3C use?

We measured the Radxa ROCK 3C drawing 2.3W at idle and 4.3W under sustained CPU load.

How much does the Radxa ROCK 3C cost?

The Radxa ROCK 3C sells for $40 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 12 September 2026. Prices are in USD before tax and shipping.

See how the Radxa ROCK 3C stacks up against another board, side by side.

Radxa ROCK 3C

Performance Summary

Price History

Test Environment

CPU Performance

7-Zip Benchmark

High Performance Linpack

UnixBench

PassMark CPU

CPU Mining (cpuminer-multi)

Memory Performance

PassMark RAM

AI & LLM Performance

Ollama LLM Benchmark

Storage Performance

fio Storage Performance - microSD

fio Storage Performance - eMMC

fio Storage Performance - M.2 NVMe

Network Performance

iPerf3 Network Performance

Power & Thermal

Power Consumption

Benchmark Data

Frequently Asked Questions

How much power does the Radxa ROCK 3C use?

How much does the Radxa ROCK 3C cost?

Radxa ROCK 3C

Performance Summary

Price History

Test Environment

CPU Performance

7-Zip Benchmark

High Performance Linpack

UnixBench

PassMark CPU

CPU Mining (cpuminer-multi)

Memory Performance

PassMark RAM

AI & LLM Performance

Ollama LLM Benchmark

Storage Performance

fio Storage Performance - microSD

fio Storage Performance - eMMC

fio Storage Performance - M.2 NVMe

Network Performance

iPerf3 Network Performance

Power & Thermal

Power Consumption

Benchmark Data

Frequently Asked Questions

How much power does the Radxa ROCK 3C use?

How much does the Radxa ROCK 3C cost?

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