Cool Pi 4B

Benchmarks, specifications, and real-world performance data

Tested by Bret Weber Last updated 10 October 2026

$140.00Official product page

Geekbench 6

3,002

multi-core · 872 single-core

Power draw

7.9W load

2.5W idle

Price

$140.00

Performance Summary

At the heart of the Cool Pi 4B sits the Rockchip RK3588S, giving this ARM board 8 CPU cores alongside 4GB of memory. In our hands-on testing it scored 3,002 multi-core and 872 single-core in Geekbench 6, plus 15,988 MIPS in multi-core 7-Zip compression. It also delivered 38.13 GFLOPS in our Linpack run. We measured 2.5W idle and 7.9W loaded power consumption.

Specification	Cool Pi 4B 4GB RAM
Basic Specifications
Price	$140
RAM	4GB
SoC	Rockchip RK3588S Mali-G610 MP4 Rockchip NPU 3.0 (6 TOPS)
Architecture	ARM
CPU Cores	8 cores 4× Cortex-A76 @ 2.4GHz 4× Cortex-A55 @ 1.8GHz
Hardware Video Decode	H.264, HEVC, HEVC 10-bit, VP9, VP9 10-bit, MPEG-2, MPEG-4 Part 2, MJPEG Up to 4K60 · AV1 (partial) · AV1 10-bit (partial) Tested formats and drivers

Connectivity
USB Ports	4× USB ports 2× USB-A 2.0, 2× USB-A 3.0
Display Ports	1× micro-HDMI 2.1
Ethernet	1.0Gbps (PoE via HAT)
WiFi	802.11ax AIC8800
Bluetooth	5.0, BLE AIC8800
Storage & Expansion
SATA Ports	None
M.2 Slots	N/A
PCIe Support	N/A
Power & I/O
Power Requirements	N/A
Power Inputs	PoE+ HAT, USB-C
GPIO	40-pin RPi compatible
Features
Real-Time Clock	No
Power Button	Yes
Fan Header	No
Mainline Linux	No
Armbian Support	No

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Environment

Cool Pi 4B

4GB RAM

Last Tested

13 September 2025

System Configuration

OS Version

Ubuntu 22.04.5 LTS

Kernel Version

5.10.66

CPU Governor

performance

Video Hardware

Jellyfin Hardware Path

Rockchip MPP

Hardware Decoding Tested With

FFmpeg for Rockchip (MPP)

Video Decoder Driver

Rockchip MPP

Drivers Installed by the Test

None: the image had everything

Hardware Decoder Support

Format	1080p30	1080p60	4K30	4K60
H.264	Works	Works	Works	Works
HEVC	Works	Works	Works	Works
HEVC 10-bit	Works	–	Works	–
VP9	Works	–	Works	–
VP9 10-bit	Works	–	Works	–
AV1	Partial	–	Partial	–
AV1 10-bit	Partial	–	Partial	–
VP8	Fails	–	–	–
MPEG-2	Works	–	–	–
MPEG-4 Part 2	Works	–	–	–
MJPEG	Works	–	–	–
H.264 Encode	Works
HEVC Encode	Works

Hardware Setup

Boot Device

CoolPi 64 64GB (eMMC)

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.

Cool Pi 4B (4GB)

CPU Performance

Processor performance across single and multi-core workloads

Geekbench 6

Higher Scores are Better

Single-Core

Cool Pi 4B (4GB)872 #19 of 72

872 #19 of 72

Multi-Core

Cool Pi 4B (4GB)3,002 #18 of 72

3,002 #18 of 72

7-Zip Benchmark

Higher Scores are Better

Single-Core Combined

Cool Pi 4B (4GB)3,144 MIPS #21 of 118

3,144 MIPS #21 of 118

Multi-Core Combined

Cool Pi 4B (4GB)15,988 MIPS #15 of 113

15,988 MIPS #15 of 113

High Performance Linpack

Higher Scores are Better

Performance

Cool Pi 4B (4GB)38.13 GFLOPS #21 of 80

38.13 GFLOPS #21 of 80

Performance/Watt

Cool Pi 4B (4GB)2.23 GFLOPS/W #33 of 74

2.23 GFLOPS/W #33 of 74

UnixBench

Higher Scores are Better

Single Core

Cool Pi 4B (4GB)1,436 #13 of 118

1,436 #13 of 118

Multi Core

Cool Pi 4B (4GB)6,206 #9 of 109

6,206 #9 of 109

PassMark CPU

Higher Scores are Better

CPU Score

Cool Pi 4B (4GB)3,192 #13 of 96

3,192 #13 of 96

CPU Mining (cpuminer-multi)

Higher Hashrates are Better

Fastest Thread

Cool Pi 4B (4GB)4.42 kH/s #11 of 108

4.42 kH/s #11 of 108

Total

Cool Pi 4B (4GB)24.7 kH/s #10 of 104

24.7 kH/s #10 of 104

MAME: Street Fighter II: The World Warrior

Higher Speed is Better

Emulation Speed

Cool Pi 4B (4GB)1,103.47% #4 of 22

1,103.47% #4 of 22

Memory Performance

Memory bandwidth and throughput benchmarks

TinyMemBench

Higher Bandwidth is Better

memcpy

Cool Pi 4B (4GB)10,753.9 MB/s #11 of 65

10,753.9 MB/s #11 of 65

memset

Cool Pi 4B (4GB)28,908.3 MB/s #6 of 65

28,908.3 MB/s #6 of 65

PassMark RAM

Higher Scores are Better

RAM Score

Cool Pi 4B (4GB)984 #37 of 87

984 #37 of 87

AI & LLM Performance

Large Language Model inference performance

Ollama LLM Benchmark

Higher Scores are Better

Tokens/sec

Cool Pi 4B (4GB)8.15 tok/s #27 of 66

8.15 tok/s #27 of 66

Tokens/Watt

Cool Pi 4B (4GB)0.7 tok/W #36 of 64

0.7 tok/W #36 of 64

Tokens/Dollar

Cool Pi 4B (4GB)0.06 tok/$ #18 of 59

0.06 tok/$ #18 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

Cool Pi 4B (4GB)8.2 MB/s

8.2 MB/s

4K Random Write

Cool Pi 4B (4GB)8.8 MB/s

8.8 MB/s

fio Storage Performance - eMMC

Higher Speeds are Better • CoolPi 64 (64GB eMMC)

4K Random Read

Cool Pi 4B (4GB)21.2 MB/s

21.2 MB/s

4K Random Write

Cool Pi 4B (4GB)26 MB/s

26 MB/s

Network Performance

Ethernet and WiFi throughput measured with iPerf3

iPerf3 Network Performance

Higher Speeds are Better

Ethernet Up

Cool Pi 4B (4GB)941 Mbps

941 Mbps

Ethernet Down

Cool Pi 4B (4GB)940 Mbps

940 Mbps

Media & Video

Jellyfin transcoding and FFmpeg video decode and convert speed

Jellyfin Transcoding

Simultaneous real-time streams, more is better

1080p HEVC → 720p

Cool Pi 4B (4GB)31 #2 of 13Rockchip MPP

31 #2 of 13Rockchip MPP

4K HEVC 10-bit → 1080p

Cool Pi 4B (4GB)8 #2 of 4Rockchip MPP

8 #2 of 4Rockchip MPP

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

HEVC 1080p

Cool Pi 4B (4GB)162.61 fps #3 of 21

162.61 fps #3 of 21

AV1 4K

Cool Pi 4B (4GB)61.5 fps #3 of 19

61.5 fps #3 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"

Idle Power

Cool Pi 4B (4GB)2.5W #43 of 74

2.5W #43 of 74

Load Power

Cool Pi 4B (4GB)7.9W #84 of 105

7.9W #84 of 105

Ollama Max

Cool Pi 4B (4GB)11.7W #47 of 64

11.7W #47 of 64

Linpack Max

Cool Pi 4B (4GB)17.1W #59 of 75

17.1W #59 of 75

Benchmark	Cool Pi 4B 4GB RAM

Geekbench 6 Single-Core	872
Geekbench 6 Multi-Core	3002
7-Zip Single-Core Combined	3144 MIPS
7-Zip Multi-Core Combined	15988 MIPS
7-Zip Single-Core Compression	3039 MIPS
7-Zip Multi-Core Compression	14715 MIPS
7-Zip Single-Core Decompression	3249 MIPS
7-Zip Multi-Core Decompression	17261 MIPS
Linpack Performance	38.125 GFLOPS
Linpack Performance/Watt	2.23 GFLOPS/W
UnixBench Single Core	1436
UnixBench Multi Core	6206
PassMark CPU Score	3192
CPU Mining Single Core	4.42 kH/s
CPU Mining Multi Core	24.7 kH/s
MAME: Street Fighter II: The World Warrior	1103.47%

TinyMemBench memcpy	10753.9 MB/s
TinyMemBench memset	28908.3 MB/s
PassMark RAM Score	984

deepseek-r1:1.5b
Tokens per Second	8.15 tok/s
Tokens per Watt	0.7 tok/W
Tokens per Dollar	0.06 tok/$
Max Power	11.7W

Raspberry Pi 64GB (64GB)
Sequential Read 4K	48.9 MB/s (12518 IOPS)
Sequential Read 64K	63.8 MB/s (1020 IOPS)
Sequential Read 1M	65.2 MB/s (64 IOPS)
Sequential Write 4K	28.6 MB/s (7335 IOPS)
Sequential Write 64K	55.5 MB/s (889 IOPS)
Sequential Write 1M	56.0 MB/s (55 IOPS)
Random Read 4K	8.2 MB/s (2109 IOPS)
Random Read 64K	38.2 MB/s (612 IOPS)
Random Read 1M	65.1 MB/s (64 IOPS)
Random Write 4K	8.8 MB/s (2275 IOPS)
Random Write 64K	42.8 MB/s (685 IOPS)
Random Write 1M	59.6 MB/s (59 IOPS)

CoolPi 64 (64GB)
Sequential Read 4K	93.0 MB/s (23823 IOPS)
Sequential Read 64K	114.6 MB/s (1834 IOPS)
Sequential Read 1M	261.3 MB/s (260 IOPS)
Sequential Write 4K	120.4 MB/s (30825 IOPS)
Sequential Write 64K	139.0 MB/s (2224 IOPS)
Sequential Write 1M	139.8 MB/s (139 IOPS)
Random Read 4K	21.2 MB/s (5438 IOPS)
Random Read 64K	85.7 MB/s (1371 IOPS)
Random Read 1M	270.3 MB/s (269 IOPS)
Random Write 4K	26.0 MB/s (6667 IOPS)
Random Write 64K	94.7 MB/s (1515 IOPS)
Random Write 1M	137.1 MB/s (136 IOPS)

Idle Power	2.5W
Load Power	7.9W
Ollama Max Power	11.7W
Linpack Max Power	17.1W

Ethernet Upload	941 Mbps
Ethernet Download	940 Mbps

Jellyfin: 1080p H.264 → 720p	19 streams CPU 3 streams · Rockchip MPP 19 streams
Jellyfin: 1080p HEVC → 720p	31 streams CPU 3 streams · Rockchip MPP 31 streams
Jellyfin: 1080p HEVC → 1080p	22 streams CPU 2 streams · Rockchip MPP 22 streams
Jellyfin: 4K HEVC 10-bit → 1080p	8 streams CPU 0 streams · Rockchip MPP 8 streams
H.264 1080p Decode	237 fps 9.9× real time on the CPU Hardware (Rockchip MPP): 660 fps
HEVC 1080p Decode	163 fps 6.8× real time on the CPU Hardware (Rockchip MPP): 1,011 fps
HEVC 10-bit 1080p Decode	99.8 fps 4.2× real time on the CPU Hardware (Rockchip MPP): 569 fps
VP9 1080p Decode	237 fps 9.9× real time on the CPU Hardware (Rockchip MPP): 860 fps
AV1 1080p Decode	207 fps 8.6× real time on the CPU
HEVC 4K Decode	40.2 fps 1.7× real time on the CPU Hardware (Rockchip MPP): 238 fps
AV1 4K Decode	61.5 fps 2.6× real time on the CPU
H.264 1080p Decode (One Thread)	64.3 fps 2.7× real time on the CPU
H.264 → HEVC Conversion	12.5 fps 86% smaller than the H.264 source
H.264 → AV1 Conversion	31.6 fps 82% smaller than the H.264 source

Frequently Asked Questions

How fast is the Cool Pi 4B?

In our testing the Cool Pi 4B scored 3,002 in Geekbench 6 multi-core and 872 in single-core, with 15,988 MIPS in multi-core 7-Zip compression.

How much power does the Cool Pi 4B use?

We measured the Cool Pi 4B drawing 2.5W at idle and 7.9W under sustained CPU load.

How much does the Cool Pi 4B cost?

The Cool Pi 4B is listed at $140.00 for the 4GB RAM configuration. Street prices vary by retailer and availability.

See how the Cool Pi 4B stacks up against another board, side by side.

Cool Pi 4B

Performance Summary

Test Environment

CPU Performance

Geekbench 6

7-Zip Benchmark

High Performance Linpack

UnixBench

PassMark CPU

CPU Mining (cpuminer-multi)

MAME: Street Fighter II: The World Warrior

Memory Performance

TinyMemBench

PassMark RAM

AI & LLM Performance

Ollama LLM Benchmark

Storage Performance

fio Storage Performance - microSD

fio Storage Performance - eMMC

Network Performance

iPerf3 Network Performance

Media & Video

Jellyfin Transcoding

Video Decoding

Power & Thermal

Power Consumption

Benchmark Data

Frequently Asked Questions

How fast is the Cool Pi 4B?

How much power does the Cool Pi 4B use?

How much does the Cool Pi 4B cost?

Cool Pi 4B

Performance Summary

Test Environment

CPU Performance

Geekbench 6

7-Zip Benchmark

High Performance Linpack

UnixBench

PassMark CPU

CPU Mining (cpuminer-multi)

MAME: Street Fighter II: The World Warrior

Memory Performance

TinyMemBench

PassMark RAM

AI & LLM Performance

Ollama LLM Benchmark

Storage Performance

fio Storage Performance - microSD

fio Storage Performance - eMMC

Network Performance

iPerf3 Network Performance

Media & Video

Jellyfin Transcoding

Video Decoding

Power & Thermal

Power Consumption

Benchmark Data

Frequently Asked Questions

How fast is the Cool Pi 4B?

How much power does the Cool Pi 4B use?

How much does the Cool Pi 4B cost?

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