Radxa

Radxa Zero 3W

Expert rating7.5 / 10

Processor:: Rockchip RK3566, Quad-Core ARM Cortex-A55 @ up to 1.6GHz
Memory:: Up to 8GB LPDDR4
Wireless:: WiFi 6, Bluetooth 5.4
USB:: 1x USB 3.0 host (Type-C), 1x USB 2.0 OTG (Type-C)
Price:: Starting at $15

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Manufacturer: Radxa Last updated: 2026-10-10

Radxa Zero 3W Review

The Radxa Zero 3W packs a genuinely current RK3566 chip with WiFi 6 and Bluetooth 5.4 into the same ultra-compact 65mm x 30mm footprint as our Raspberry Pi Zero 2 W, starting at just $15, with configurations scaling up to 8GB of RAM, well beyond the Pi Zero 2 W's fixed 512MB ceiling.

Enthusiasts specifically search this out as a Pi Zero form-factor alternative when a project needs more memory or newer wireless standards than the Pi Zero 2 W offers, without stepping up to a larger board.

WiFi 6 in a Board This Small

Most ultra-compact SBCs in this size class still ship with older WiFi standards. Built-in WiFi 6 and Bluetooth 5.4 on the Zero 3W is a genuinely current wireless spec sheet, meaningful for projects that benefit from lower latency or better performance in congested WiFi environments even at this small scale.

USB 3.0 Where Competitors Often Cut Corners

A USB 3.0 host port alongside a USB 2.0 OTG port gives genuinely fast peripheral and storage connectivity in this tiny form factor, many ultra-compact competitors, including the Pi Zero 2 W, top out at USB 2.0 only.

Comparison to Alternatives

Against our Raspberry Pi Zero 2 W, the Zero 3W's higher RAM ceiling, WiFi 6, and USB 3.0 port are real practical advantages, offset by the smaller Radxa community and documentation base compared to the Raspberry Pi ecosystem. Against our Orange Pi Zero 3, both compete in the same ultra-compact tier, the Zero 3W's WiFi 6 and USB 3.0 give it a wireless and connectivity edge, the Orange Pi Zero 3 counters with built-in Gigabit Ethernet that the Zero 3W lacks.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating7.5 / 10

The ultra-compact WiFi 6 pick for Pi Zero-form-factor projects needing more RAM or newer wireless.

Best for

Pi Zero-form-factor projects needing more RAM headroom, WiFi 6, or USB 3.0 than the Raspberry Pi Zero 2 W offers.

Not for

Buyers who specifically want the Raspberry Pi ecosystem's community size and documentation depth, Radxa's support base is smaller.

Specifications

What these specs mean

Identity

Brand	Radxa
Model Number	Zero 3W

Processor

SoC Model	Rockchip RK3566, Quad-Core ARM Cortex-A55 @ up to 1.6GHz

Graphics and AI

GPU Model	Mali-G52 2EE

Storage

Onboard Storage	Onboard eMMC, microSD

Display

Video Outputs	1080 outputs

Expansion

Camera Interface	22-pin MIPI CSI

Memory	Up to 8GB LPDDR4
Wireless	WiFi 6, Bluetooth 5.4
Price	15 USD

Measured results

sbc-bench results

7-Zip MIPS, multi-threaded	4,000 MIPS	sbc-bench run · Radxa Zero 3W (RK3566); 1600 MHz; kernel 5.10; Jammy arm64 · Source
7-Zip MIPS, single-threaded	1,155 MIPS	sbc-bench run · Radxa Zero 3W (RK3566); 1600 MHz; kernel 5.10; Jammy arm64 · Source
OpenSSL AES-256-CBC, single thread	750,970 KB/s	sbc-bench run · Radxa Zero 3W (RK3566); 1600 MHz; kernel 5.10; Jammy arm64 · Source
Memory copy bandwidth (tinymembench memcpy)	2,400 MB/s	sbc-bench run · Radxa Zero 3W (RK3566); 1600 MHz; kernel 5.10; Jammy arm64 · Source

The author states these are not pure hardware numbers: they depend on kernel, distro and settings, and openssl (AES) numbers should be taken with a grain of salt. Single run, as listed in sbc-bench Results.md.

Retrieved 23 Sept 2026

sbc-bench by Thomas Kaiser (github.com/ThomasKaiser/sbc-bench, Results.md). Copyright (c) 2018, Thomas Kaiser. All rights reserved. Redistributed under the BSD 3-Clause License; full notice, conditions and disclaimer: github.com/ThomasKaiser/sbc-bench/blob/master/LICENSE

FAQs

What are the key specifications of the Radxa Zero 3W (Single-Board Computer/Rockchip RK3566/Quad-Core Cortex-A55 1.6GHz/Up to 8GB LPDDR4/Ultra-Compact WiFi 6 Pick)?

Key specs for the Radxa Zero 3W: GPU Mali-G52 2EE, Storage Onboard eMMC, microSD, Video Output Micro HDMI, 1080p60, Processor Rockchip RK3566, Quad-Core ARM Cortex-A55 @ up to 1.6GHz, Memory Up to 8GB LPDDR4, Wireless WiFi 6, Bluetooth 5.4.

Will the Radxa Zero 3W (Single-Board Computer/Rockchip RK3566/Quad-Core Cortex-A55 1.6GHz/Up to 8GB LPDDR4/Ultra-Compact WiFi 6 Pick) work with my current setup?

The Radxa Zero 3W (Single-Board Computer/Rockchip RK3566/Quad-Core Cortex-A55 1.6GHz/Up to 8GB LPDDR4/Ultra-Compact WiFi 6 Pick) lists Processor is Rockchip RK3566, Quad-Core ARM Cortex-A55 @ up to 1.6GHz. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Radxa Zero 3W (Single-Board Computer/Rockchip RK3566/Quad-Core Cortex-A55 1.6GHz/Up to 8GB LPDDR4/Ultra-Compact WiFi 6 Pick) best suited to?

Best suited to: Pi Zero-form-factor projects needing more RAM headroom, WiFi 6, or USB 3.0 than the Raspberry Pi Zero 2 W offers.

What are the drawbacks of the Radxa Zero 3W (Single-Board Computer/Rockchip RK3566/Quad-Core Cortex-A55 1.6GHz/Up to 8GB LPDDR4/Ultra-Compact WiFi 6 Pick)?

Not the best fit for: Buyers who specifically want the Raspberry Pi ecosystem's community size and documentation depth, Radxa's support base is smaller.