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Raspberry Pi Compute Module 4 (CM4)

Raspberry Pi Compute Module 4 (CM4)

Tested by Bret Weber Last updated

Geekbench 6

609

multi-core · 255 single-core

Power draw

4.2W load

Peak temp

76°C

stock cooling, sustained load

Price

$61.62

Performance Summary

At the heart of the Raspberry Pi Compute Module 4 (CM4) sits the Broadcom BCM2711, giving this ARM board 4 CPU cores alongside 2GB of memory. In our hands-on testing it scored 609 multi-core and 255 single-core in Geekbench 6, plus 5,170 MIPS in multi-core 7-Zip compression. It also delivered 12.46 GFLOPS in our Linpack run. Under an hour of sustained CPU stress, the board peaked at 76°C.

Specification
Basic Specifications
Price
RAM2GB
SoC
VideoCore VI
ArchitectureARM
CPU Cores
4 cores
4× Cortex-A72 @ 1.5GHz
Hardware Video Decode
H.264, HEVC, HEVC 10-bit
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Price History

£46.00 at The Pi Hut, unchanged since 12 September 2026. Shown as $61.62: we convert at the daily exchange rate and only update the dollar price when the rate moves noticeably. Checked daily.

Out of stock at that pricePrices are before tax and shipping. Non-US stores are converted at the daily ECB rate, and the dollar price only changes when the rate moves noticeably; hover a point for the store’s own price.

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.

Raspberry Pi Compute Module 4 (CM4) (2GB)

CPU Performance

Processor performance across single and multi-core workloads

Geekbench 6

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)255 #52 of 72
Raspberry Pi Compute Module 4 (CM4) (2GB)609 #55 of 72

7-Zip Benchmark

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)1,522 MIPS #57 of 118
Raspberry Pi Compute Module 4 (CM4) (2GB)5,170 MIPS #59 of 113

High Performance Linpack

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)12.46 GFLOPS #53 of 80
Raspberry Pi Compute Module 4 (CM4) (2GB)2.22 GFLOPS/W #35 of 74

UnixBench

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)493 #51 of 118
Raspberry Pi Compute Module 4 (CM4) (2GB)1,528 #58 of 109

PassMark CPU

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)518 #68 of 96

CPU Mining (cpuminer-multi)

Higher Hashrates are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)1.89 kH/s #55 of 108
Raspberry Pi Compute Module 4 (CM4) (2GB)7.54 kH/s #57 of 104

Memory Performance

Memory bandwidth and throughput benchmarks

TinyMemBench

Higher Bandwidth is Better

Raspberry Pi Compute Module 4 (CM4) (2GB)2,847.4 MB/s #33 of 65
Raspberry Pi Compute Module 4 (CM4) (2GB)3,182.1 MB/s #48 of 65

PassMark RAM

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)625 #53 of 87

AI & LLM Performance

Large Language Model inference performance

Ollama LLM Benchmark

Higher Scores are Better

Raspberry Pi Compute Module 4 (CM4) (2GB)3.46 tok/s #41 of 66
Raspberry Pi Compute Module 4 (CM4) (2GB)0.72 tok/W #32 of 64
Raspberry Pi Compute Module 4 (CM4) (2GB)0.06 tok/$ #18 of 59

Storage Performance

Disk I/O throughput measured with FIO

fio Storage Performance - eMMC

Higher Speeds are Better • Raspberry Pi CM4 (16GB eMMC)

4K Random Read
Raspberry Pi Compute Module 4 (CM4) (2GB)26.3 MB/s
4K Random Write
Raspberry Pi Compute Module 4 (CM4) (2GB)38.8 MB/s

fio Storage Performance - M.2 NVMe

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

4K Random Read
Raspberry Pi Compute Module 4 (CM4) (2GB)245.7 MB/s
4K Random Write
Raspberry Pi Compute Module 4 (CM4) (2GB)153.6 MB/s

Network Performance

Ethernet and WiFi throughput measured with iPerf3

iPerf3 Network Performance

Higher Speeds are Better

Ethernet Up
Raspberry Pi Compute Module 4 (CM4) (2GB)942 Mbps
Ethernet Down
Raspberry Pi Compute Module 4 (CM4) (2GB)941 Mbps

Media & Video

Jellyfin transcoding and FFmpeg video decode and convert speed

Jellyfin Transcoding

Simultaneous real-time streams, more is better

Raspberry Pi Compute Module 4 (CM4) (2GB)1 #7 of 13V4L2
Raspberry Pi Compute Module 4 (CM4) (2GB)0 (slower than real time)

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

Raspberry Pi Compute Module 4 (CM4) (2GB)50.48 fps #10 of 21
Raspberry Pi Compute Module 4 (CM4) (2GB)18 fps #10 of 19

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"

Raspberry Pi Compute Module 4 (CM4) (2GB)4.2W #43 of 105
Raspberry Pi Compute Module 4 (CM4) (2GB)4.8W #13 of 64
Raspberry Pi Compute Module 4 (CM4) (2GB)5.6W #16 of 75

Frequently Asked Questions

How fast is the Raspberry Pi Compute Module 4 (CM4)?

In our testing the Raspberry Pi Compute Module 4 (CM4) scored 609 in Geekbench 6 multi-core and 255 in single-core, with 5,170 MIPS in multi-core 7-Zip compression.

How much power does the Raspberry Pi Compute Module 4 (CM4) use?

We measured the Raspberry Pi Compute Module 4 (CM4) drawing 4.2W under sustained CPU load.

How much does the Raspberry Pi Compute Module 4 (CM4) cost?

The Raspberry Pi Compute Module 4 (CM4) sells for £46.00 ($61.62) at the official store (The Pi Hut) 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. Dollar prices are converted at the daily exchange rate; all prices are before tax and shipping.

See how the Raspberry Pi Compute Module 4 (CM4) stacks up against another board, side by side.