Trendnet 5-Port Gigabit Green Switch - Performance and Energy Consumption

Article Index
Trendnet 5-Port Gigabit Green Switch
Closer Look and Product Specs
Performance and Energy Consumption

Testing the TEG-S50G:

When it comes to testing out networking equipment, there are many ways to get performance numbers. 90% of the time network performance looks very poor due to Operating System restrictions and overhead as well as hard drive bottlenecks.  It's not every system that can dish out 1000mbps (125MB/sec) read speed from a hard drive, let alone write data at that speed to the destination drive.  It's for this reason that we use iPerf for our network performance testing.  This little command-line program allows the network performance to be measured in terms of what the hardware is capable of.  In real life, you'll never see data transfer at 110+ MB/sec, but that doesn't mean the hardware is not capable.  We often find that iPerf shows incredible performance potential in networking hardware as much as it shows where networking hardware fails.

In the chart below we show iPerf performance numbers that are gained while we run several other GB file transfers on different machines on the network.  In the tests shown below, the switch has five active ports - with three of those ports transferring files over a GB connection.  iPerf is tested on the other ports to see how well the switch, er, switches and how performance is sustained on a busy network.  During these bandwidth tests, we also measured the power consumption for comparison.  The two "Green" switches did okay, but the TEG-160WS WebSmart switch didn't fare so well.  It is in a different class and costs almost 6x as much.



As you can see above, the performance of the switches is nearly identical showing about 94% of maximum possible bandwidth.  This is very good performance for all the products.  Because we don't have a lot of excessive traffic, we don't see any benefit to the TEG-160WS.  What we do see is that the Trendnet TEG-S50G only uses 3W of power, while the D-Link DGS-1005D "Green" switch uses 5W of power.  The difference is only 2W and will probably cost you in the neighborhood of $0.25 per month extra to run, but the Trendnet switch is "Greener" as it does indeed use less power than the competition.  Not only that, it is also cheaper to buy than the D-Link competitor.


Final Thoughts:

The Trendnet TEG-S50G GREENnet 5-Port Gigabit switch is a bargain at $35 and it offers the convenience and speed of Gigabit for those with small networks.  The 5-Port size is great for those that want to get started with 10/100/1000 networking without laying down a lot of cash.  It supports Auto MDIX, Jumbo Frame support and more - just like more expensive products and it does this all for a very attractive price.  Trendnet claims that it uses up to 70% less power than other switches and we've seen that it indeed uses less power than a competitive "Green" product from D-Link.  The reality is that it will only save you about $0.25 per month on your power bill.  However, if Trendnet's "Green" products can save an average of $0.05/port, imagine how much money you'd save every month in a large office building using 5000 networked computers - $250 a month or $3000 a year.  That's a nice little bonus and it saves on the environment.


  • Compact 5-Port Switch
  • Sturdy Metal Case
  • Excellent Network performance
  • Consumes a mere 3W!



  • Nothing



 Editors Choice

I'd like to thank Trendnet for shipping us this handy switch to test.  If you have any questions or comments regarding this review, please feel free to post those in the forum at the "Comments" link below.