On Mon, Nov 8, 2010 at 5:45 PM, Robert Arkiletian <[email protected]> wrote: > On Mon, Nov 8, 2010 at 2:55 PM, Jordan Erickson > <[email protected]> wrote: >> Robert, >> >> I agree with you on your points, but I think you're missing a couple of >> things in regard to the bigger picture - >> >> 1) Thin clients run at 8-30W of power. Your version of a "power >> efficient and fast desktop system" will consume much more than the >> average thin client, even if the box says "green" all over it. >> > > Hi Jordan, > > I think you are correct and this is a valid point. The cost of > electricity is important. This is something I would like to definitely > investigate further. I have a kill-a-watt device I will take to work > tomorrow. My clients are Dell Optiplex 760 with Intel Celeron E1400 > (dual core 2.0 Ghz Allendale cores) with Intel Q43 chipset ( X4500 > video chip). I will measure power consumption at the login prompt > (*not* including monitor) and post back. But I'm wondering if someone > with a true thin client system (Dual core Atom) can do the same and > post back. >
Got some numbers from my kill-a-watt meter: Dell Optiplex 760 (running DRBL client) e1400 dual core Celeron (Allendale 65nm) 2.0Ghz Q43 Intel chipset 2 GB ram gnome desktop + FF(google.ca) = 45W gnome desktop + FF(youtube 720p fullscreen) = 60-65W (fluctuates) A real dual core Atom thin client running LTSP ~ 19W (I don't have an Atom based thin client to test. This is from some googling ymmv) Assume average usage is 49W for the Dell over a work day. 49-19= 30W difference (omitting monitor) 30W * 8hrs/day * 190 work days/school year = 45.6 KWh for 1 system/year Assume a large school has 180 systems. 180 systems * 45.6 KWh/system/year = 8208 KWh/year for 1 school At $0.08/KWh for electricity for public sector K-12 schools (this varies where you live) (see http://www.eia.doe.gov/electricity/epm/table5_6_a.html) 8208 KWh/year * $0.08/KWh = $656.64 / year/ school savings using fat diskless vs thin client Oh course this will vary depending on your own systems but it gives a ball park. If a district has say 15 schools of this size that's almost $10,000 savings per year for a district. But that's assuming you have 100% homogeneous systems (rarely the case). If I have made any errors or omissions please correct me. -- Robert Arkiletian Eric Hamber Secondary, Vancouver, Canada -- edubuntu-users mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
