Radxa ROCK 3C vs Radxa ROCK 5B

Benchmarks, specifications, and real-world performance data

Specification
Basic Specifications
Price
RAM2GB8GB
SoC
Mali-G52 2EE
Mali-G610 MP4
Rockchip NPU 3.0 (6 TOPS)
ArchitectureARMARM
CPU Cores
4 cores
4× Cortex-A55 @ 1.8GHz
8 cores
4× Cortex-A76 @ 2.4GHz
4× Cortex-A55 @ 1.8GHz

Legend

Best value in category
Key performance metric
*Manufacturer's RRP
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Detailed Reviews

Read our comprehensive reviews from bret.dk featuring data and benchmarks from sbc.compare:

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Radxa ROCK 3C (2GB)
Radxa ROCK 5B (8GB)

CPU Performance

Processor performance across single and multi-core workloads

Geekbench 6

Higher Scores are Better

Single-Core
Radxa ROCK 3C (2GB)
No Data
Radxa ROCK 5B (8GB)
849
Multi-Core
Radxa ROCK 3C (2GB)
No Data
Radxa ROCK 5B (8GB)
3,043

7-Zip Benchmark

Higher Scores are Better

Single-Core Combined
Radxa ROCK 3C (2GB)
1,373 MIPS
Radxa ROCK 5B (8GB)
3,113 MIPS
Multi-Core Combined
Radxa ROCK 3C (2GB)
4,755 MIPS
Radxa ROCK 5B (8GB)
16,486 MIPS

High Performance Linpack

Higher Scores are Better

Performance
Radxa ROCK 3C (2GB)
8.2 GFLOPS
Radxa ROCK 5B (8GB)
41.58 GFLOPS
Performance/Watt
Radxa ROCK 3C (2GB)
1.37 GFLOPS/W
Radxa ROCK 5B (8GB)
2.17 GFLOPS/W

UnixBench

Higher Scores are Better

Single Core
Radxa ROCK 3C (2GB)
403
Radxa ROCK 5B (8GB)
1,376
Multi Core
Radxa ROCK 3C (2GB)
1,345
Radxa ROCK 5B (8GB)
6,340

PassMark CPU

Higher Scores are Better

CPU Score
Radxa ROCK 3C (2GB)
682
Radxa ROCK 5B (8GB)
2,911

CPU Mining (cpuminer-multi)

Higher Hashrates are Better

Single Core
Radxa ROCK 3C (2GB)
1.63 kH/s
Radxa ROCK 5B (8GB)
3.7 kH/s
Multi Core
Radxa ROCK 3C (2GB)
6.51 kH/s
Radxa ROCK 5B (8GB)
21.76 kH/s

Memory Performance

Memory bandwidth and throughput benchmarks

PassMark RAM

Higher Scores are Better

RAM Score
Radxa ROCK 3C (2GB)
564
Radxa ROCK 5B (8GB)
1,402

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
Radxa ROCK 5B (8GB)
0.21 tok/s
Tokens/Watt
Radxa ROCK 3C (2GB)
0.44 tok/W
Radxa ROCK 5B (8GB)
0.02 tok/W
Tokens/Dollar
Radxa ROCK 3C (2GB)
0.07 tok/$
Radxa ROCK 5B (8GB)
No Data

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
Radxa ROCK 5B (8GB)
No Data
4K Random Write
Radxa ROCK 3C (2GB)
7.8 MB/s
Radxa ROCK 5B (8GB)
No Data

fio Storage Performance - eMMC

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

4K Random Read
Radxa ROCK 3C (2GB)
29.5 MB/s
Radxa ROCK 5B (8GB)
No Data
4K Random Write
Radxa ROCK 3C (2GB)
37.9 MB/s
Radxa ROCK 5B (8GB)
No Data

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
Radxa ROCK 5B (8GB)
No Data
4K Random Write
Radxa ROCK 3C (2GB)
81.6 MB/s
Radxa ROCK 5B (8GB)
No Data

Network Performance

Ethernet and WiFi throughput measured with iPerf3

iPerf3 Network Performance

Higher Speeds are Better

Ethernet Up
Radxa ROCK 3C (2GB)
942 Mbps
Radxa ROCK 5B (8GB)
2,352 Mbps
Ethernet Down
Radxa ROCK 3C (2GB)
941 Mbps
Radxa ROCK 5B (8GB)
2,358 Mbps

Power & Thermal

Power consumption at idle and under various workloads

Power Consumption

Lower is "Better"

Idle Power
Radxa ROCK 3C (2GB)
2.3W
Radxa ROCK 5B (8GB)
4.5W
Load Power
Radxa ROCK 3C (2GB)
4.3W
Radxa ROCK 5B (8GB)
9.5W
Ollama Max
Radxa ROCK 3C (2GB)
6.1W
Radxa ROCK 5B (8GB)
14.7W
Linpack Max
Radxa ROCK 3C (2GB)
6W
Radxa ROCK 5B (8GB)
19.2W

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