Changes between Version 5 and Version 6 of PowerConsumption

Timestamp:

Jan 8, 2008 5:58:44 PM (5 years ago)

Author:

dkg

Comment:

switched measurements to power (Watts), so that it's independent of voltage (Volts)

PowerConsumption

@@ -1 +1 @@
 = Power Consumption of computing equipment =
 
-[wiki:jrollins] recently got a [http://www.thinkgeek.com/gadgets/travelpower/7657/ kill-a-watt], a device which sits in-line with the 120VAC mains power, and measures RMS current consumed.  Sadly, it uses a shitty LCD readout instead of an RS-232 machine-readable interface.  Also sadly, it can't be used to monitor machines without detaching their power lines first.
+[wiki:jrollins] recently got a [http://www.thinkgeek.com/gadgets/travelpower/7657/ kill-a-watt], a device which sits in-line with the mains power, and measures the power consumed.  Sadly, it uses a shitty LCD readout instead of an RS-232 machine-readable interface.  Also sadly, it can't be used to monitor machines without detaching their power lines first.
 
 || '''machine''' || '''specs''' || '''no load''' || '''CPU burn'''[[BR]] (`dd if=/dev/urandom of=/dev/null`) || '''disk read load'''[[BR]](`dd if=/dev/hda of=/dev/null`) ||
-|| crusty || Pentium I 90MHz, 80MB RAM, 1G PATA disk ||580mA || 610mA || 650mA ||
-|| splat || [wiki:embedded/alix alix] AMD Geode 500MHz, 256MB RAM, 2G CF || 70mA || 90mA || ?? ||
-|| squeak || thinkpad X30 12" screen, P3 1.2GHz, 512MB RAM, 40GB PATA laptop HD || 240mA || 410mA || 330mA ||
+|| crusty || Pentium I 90MHz, 80MB RAM, 1G PATA disk ||41W || 43W || 46W ||
+|| splat || [wiki:embedded/alix alix] AMD Geode 500MHz, 256MB RAM, 2G CF || 5W || 7W || ?? ||
+|| squeak || thinkpad X30 12" screen, P3 1.2GHz, 512MB RAM, 40GB PATA laptop HD || 17W || 31W || 24.5W ||
 
 There are obviously other interesting things that could affect power measurements.  These would be worth measuring at some point, for the devices which support them.