---
title: "W55RP20 Ethernet Performance Measurements"
url: "https://maker.wiznet.io/louis_m/projects/w55rp20-ethernet-performance-measurements/"
markdown_url: "https://maker.wiznet.io/louis_m/projects/w55rp20-ethernet-performance-measurements/md"
type: "WCC: WIZnet Created Content"
author: "Louis"
original_author: "Louis"
published: "2025-05-12"
language: "en"
hardware: ["WIZnet W55RP20"]
likes: 0
views: 1191
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# W55RP20 Ethernet Performance Measurements

> Utilizes the W55RP20 microcontroller Ethernet chip to test high-speed Ethernet communication performance.

Original author: Louis

## Components

- **WIZnet W55RP20** x 1 ([docs](https://wiznet.io/products/ionic-chips/w55rp20))

## Article

Utilizes the W55RP20 microcontroller Ethernet chip to test high-speed Ethernet communication performance.
Designed to operate the board as an iperf3 server using the iperf3 tool to measure upload and download throughput between PC and board.

## **W55RP20-EVB-Pico environment**

![](https://maker.wiznet.io/upload/ckeditor5/34014442%5F1747041372%2Epng)

## **Performance**

| **Item** | **Details** |
| --- | --- |
| Board | W55RP20-EVB-Pico |
| MCU | RP2040 (Dual-core Cortex-M0+) |
| Interface | PIO SPI |
| Network Tool | iperf3 |
| Network Mode | TCP Client (PC) → TCP Server (Board) |
| Test Duration | 10 seconds (-t 10 option used) |
| Measurement Method | Measure both upload and download |

- speed measurement using iPerf3 at the C level

- W55RP20<->PC TCP Result

- 100 times at 2-second intervals

![](https://maker.wiznet.io/upload/ckeditor5/34014442%5F1747041197%2Epng)

**MCU Clock: 90 MHzSPI Clock: 45 MHzIPERF Max: 39.2 MbpsIPERF Average: 38.3 Mbps**

---

- speed measurement using iPerf3 at the C level

- W55RP20<->PC TCP(LWIP) Result

- 100 times at 2-second intervals

![](https://maker.wiznet.io/upload/ckeditor5/34014442%5F1747041248%2Epng)

**MCU Clock : 90MHzSPI Clock : 45MHziperf Max: 10.4 Mbpsiperf Average: 9.76 Mbps**

---

- speed measurement using iPerf3 at the C level

- W55RP20<->PC Micropython Result

- 100 times at 2-second intervals

![](https://maker.wiznet.io/upload/ckeditor5/34014442%5F1747041312%2Epng)

**SPI Clock : 31MHziperf Max: 1.05 Mbpsiperf Average: 683 Kbps**

---

Source: https://maker.wiznet.io/louis_m/projects/w55rp20-ethernet-performance-measurements/