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Vivid Unit – Does the Ethernet port support Gigabit (1000 Mbps)?

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(@rodriguezmiguel1625)
Posts: 1
New Member Customer
Topic starter
 

Hi everyone,

I’m considering buying a UUGear Vivid Unit for a network testing project, but I haven’t been able to find clear information about the Ethernet port speed.

Does anyone know if the built-in RJ45 port supports Gigabit Ethernet (10/100/1000 Mbps)?

More importantly, has anyone tested the actual Ethernet throughput using iperf3 or a similar tool? I need the device to be capable of around 900+ Mbps TCP throughput, since I plan to use it for wired Internet speed tests.

If anyone owns a Vivid Unit and could run an iperf3 test, that would be extremely helpful.

Thanks!

 
Posted : 02/09/2026 8:52 am
(@admin)
Posts: 828
Member Admin
 

Yes, the built-in RJ45 port on Vivid Unit supports Gigabit Ethernet (10/100/1000 Mbps). The hardware uses an RTL8211E Gigabit Ethernet PHY connected to the RK3399 via RGMII.

We also ran an iperf3 test specifically for your question.

Test setup

  • Vivid Unit ↔ Gigabit router/switch ↔ Raspberry Pi
  • Both devices connected via wired Ethernet
  • Both Ethernet links negotiated at 1000 Mbps, full duplex
  • Wi-Fi disabled on both devices during the test
  • Single TCP stream
  • 30-second test
  • Standard MTU 1500

Vivid Unit → Raspberry Pi

iperf3 -c 192.168.1.42 -t 30

0.00-30.00 sec 3.29 GBytes 942 Mbits/sec 0 sender
0.00-30.00 sec 3.29 GBytes 941 Mbits/sec receiver

Raspberry Pi → Vivid Unit

iperf3 -c 192.168.1.42 -t 30 -R

0.00-30.00 sec 3.29 GBytes 942 Mbits/sec 0 sender
0.00-30.00 sec 3.29 GBytes 941 Mbits/sec receiver

So in our test setup, Vivid Unit sustained approximately 941 Mbps TCP throughput in both directions using a single TCP connection, which is essentially full practical throughput for a 1 Gigabit Ethernet link.

Therefore, for your requirement of around 900+ Mbps wired TCP throughput, Vivid Unit should be capable of meeting it.

 
Posted : 02/09/2026 11:03 am
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