low power 48 port gigabit switch?

[matg]

Looking a low power as possible 48 port budget switch, any suggestions?

 

[thiggins]

Gigabit and low power don't go together. The main thing you can control is the power of unused ports.

Most switches today use "green" switch chipsets. These power down ports that aren't in use and also reduce power to ports that have shorter cables attached.

This technology is used in most switches today. Just look for references to the above features.

 

[azazel1024]

Well...it kind of depends. An unmanaged switch is most likely to be your lowest power option. You deffinitely want "green" to be in there, specifically referencing power management on cable length and unused ports.

My Trendnet 8 port GbE switch (unmanaged) uses 1.5w with nothing connected and increases by .5-1w per port as devices connect to it.

My managed TP-Link SG2216 uses around 5-6w with nothing connected to it and goes up by around .5-1w per port connected with an active device on it. I think my current rough "base" power consumption with 2 ports being in use by my server all the time, 2 ports set in 10Mbps mode by my desktop that is normally off, but S5 wake enabled, 2 gigabit routers each using a port and Moca to Fast Ethernet bridge as the baseload it runs around 9w or so. I don't actually have enough devices to have every port up at once, but I do have 14 of the 16 ports connected (most of the LAN drops sit empty, but are there for future expansion or the times I need to plug in instead of using wireless with the laptop in some room of the house).

Best guess, an unmanaged 48-port gigabit switch with nothing connected is probably going to run 4-10w just for the basic switching fabric and stuff to be up and then add in .5-1w per port populated.

You can probably look around at some numbers, but manufacturers are crap about actually displaying this information. I THINK DLink and TP-Link often give you the rough power consumption. A lot will at best tell you the maximum power consumption of their product, not the base and max.

Assume max for the device is every port populated and on with max length cables (IE 100m). It is somewhat telling between products with otherwise identical stats if one has higher maximum power consumption than another, though it doesn't tell you how good power management is with port shut down and cable length Tx power management and stuff.