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          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">Using a service like [https://en.wikipedia.org/wiki/XPL_Protocol xPL]  requires a computer that is always switched on.
This poses the question of power consumption and speed.

= Comparison =

The power consumption has been measured with the SBC running the installed OS with no particular program running.

The delay has been measured by sending a given xPL message which was parsed by the [[install central|central xPL device]]
on a 300 lines XML rules file (with &lt;code&gt;xpl-monitor.pl -vfd&lt;/code&gt;).
The parsing of the rules is quite lengthy and does not reflect the basic xPL message receiving and sending.
Other basic xPL clients who just react on a message and send another one, such as the [[install EIB|EIB / KNX interface]] do this within 0.01 second, even on the slower computers.

{| class=&quot;wikitable&quot; style=&quot;text-align: left; margin-left:50pt&quot; 
|-
! model
! Processor
! OS
! power&lt;br /&gt;DC
! power&lt;br /&gt;AC
! delay
|-
| [http://beagleboard.org/Products/BeagleBone BeagleBone] white || 720 MHz ARM Cortex-A8 (AM335x Sitara) || Ubuntu
| align=&quot;center&quot; | 0.75 W || align=&quot;center&quot; | 1.8 W || align=&quot;center&quot; | 3 s
|-
| [http://beagleboard.org/Products/BeagleBone+Black BeagleBone Black]  || 1 GHz ARM® Cortex-A8 (AM335x Sitara) || Ubuntu
| align=&quot;center&quot; | 1.5 W || align=&quot;center&quot; | 1.9 W || align=&quot;center&quot; | 0.5 s
|-
| BeagleBone Black with 7&quot; display || || || align=&quot;center&quot; | 3 W || align=&quot;center&quot; | 3.6 W ||
|-
| [https://store.gumstix.com/ Overo EarthSTORM]  || 1 GHz ARM Cortex-A8 (AM3703 Sitara) || Ubuntu
| align=&quot;center&quot; | 1.1 W || align=&quot;center&quot; | 2.8 W || align=&quot;center&quot; | 0.35 s
|-
| [https://www.raspberrypi.org/blog/raspberry-pi-zero/ Raspberry Pi Zero]  || 1 GHz ARM 11 (Broadcom SOC) || Ubuntu
| align=&quot;center&quot; | 0.57 W
|-
| Raspberry Pi zero with GUI || || Raspbian || align=&quot;center&quot; | 0.64 W
|-
| [http://www.raspberrypi.org Raspberry Pi Model B]  || 700 MHz ARM 11 (Broadcom SOC) || Rasbian
| align=&quot;center&quot; | 2 W || ||
|-
| [https://www.raspberrypi.org/products/raspberry-pi-3-model-b/ Raspberry Pi 3]  || quad core 1.2 GHz ARM 11 (Broadcom SOC) || Ubuntu
| align=&quot;center&quot; | 1.64 W
|-
| Raspberry Pi 3 with GUI || || Ubuntu Mate || align=&quot;center&quot; | 1.75 W
|-
| [https://www.olimex.com/Products/OLinuXino/A10/ OLinuXino A10]  || 1 GHz ARM Cortex-A8 (Allwinner A10) || Debian
|  || align=&quot;center&quot; | 2.7 W || align=&quot;center&quot; | 0.3 s
|-
| [https://www.intel.com/content/www/us/en/products/boards-kits/nuc/kits/nuc8i7beh.html Intel NUC NUC8i7BEH] with GUI || 2.4 GHz Intel Core i7-8559U Processor || Ubuntu
|  || align=&quot;center&quot; | 3 W || align=&quot;center&quot; | 
|-
| [http://www.pcengines.ch/alix1d.htm alix1d]  || 500 MHz AMD Geode LX || Voyage
| align=&quot;center&quot; | 3.75 W || align=&quot;center&quot; | 4.7 W || align=&quot;center&quot; | 0.15 s
|-
| [http://www.pcengines.ch/apu.htm apu1d]  || 1 GHz AMD T40E APU || Ubuntu
| || align=&quot;center&quot; | 6.5 W || align=&quot;center&quot; |
|-
| [http://boundarydevices.com/products/sabre-lite-imx6-sbc/ SABRE Lite] || 1 GHz Quad-Core ARM Cortex-A9 || Ubuntu
| align=&quot;center&quot; | tbd || align=&quot;center&quot; | 5.3 W || align=&quot;center&quot; | 0.1 s
|-
| [https://www.zotac.com/us/product/mini_pcs/ci327-nano ZOTAC ZBOX CI327 nano] || 1.1GHz quad-core Celeron N3450 || Ubuntu
| align=&quot;center&quot; | tbd || align=&quot;center&quot; | 5.2 W || align=&quot;center&quot; | 0.03 s
|-
| [http://www.via.com.tw/en/products/embedded/artigo/a1000/ VIA ARTiGO A1000 Pico-ITX] || 1 GHz VIA C7 || Ubuntu
| align=&quot;center&quot; | 11 W || align=&quot;center&quot; | 12.7 W || align=&quot;center&quot; | 0.1 s
|-
| VIA ARTiGO A1000 Pico-ITX with lightDM || || || align=&quot;center&quot; | 11.5 W || ||
|}

The column ''power DC'' provides values that have been displayed by a DC power supply, without the AC adapter coming with the SBC. 

It is to be noted that bright LEDs consume more then 20&amp;nbsp;mA, which makes 0.1&amp;nbsp;W on a 5&amp;nbsp;V power supply.
In other words the LED indicators are a nice feature for the debugging but could be soldered away once the product is functional.

[[Category: all]]</rev>
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      <page pageid="22" ns="0" title="Work in progress">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">::&lt;html&gt;
&lt;a title=&quot;By Dsmurat (+) [LGPL (http://www.gnu.org/licenses/lgpl.html)], via Wikimedia Commons&quot; href=&quot;http://commons.wikimedia.org/wiki/File%3AUnder_construction_icon-blue.svg&quot;&gt;&lt;img width=&quot;512&quot; alt=&quot;Under construction icon-blue&quot; src=&quot;//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/Under_construction_icon-blue.svg/512px-Under_construction_icon-blue.svg.png&quot;/&gt;&lt;/a&gt;
&lt;/html&gt;

[[Category: all]]</rev>
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