On Sun 05 Jul 2020 at 23:44:09 (+0200), Thomas Schmitt wrote: > David Wright wrote: > > > > My 650MHz Pentium III (Coppermine) [...] > > consumes ~50mA idling, ~300mA when busy. [...] at 220V > > 11 to 66 Watt. That's unusual for a full size PC of that time. > I knew some which issued 10 Watts already by noise power and could > heat a small sized office room in winter.
Sorry, "idling" is probably not the best term—I extracted the line from a spreadsheet of power consumptions for a multitude of different electronics and electrical appliances. For this PC, it means switched on, but with only the NIC waiting for a wakeup call. So the disks, fan and, I assume, the CPU, are not running. The ability to wake it up is not something I currently use on this machine because of its convenient location; though after shutdown, I don't rush to turn off the wall switch. > Google ... > https://en.wikipedia.org/wiki/Pentium_III > 22.41 Watt of TDP. That's about the same as with one 3.5 GHz Xeon core. > But i'd say the Xeon core is about 20 times more powerful (64 vs. 32 bit, > factor 5 of frequency, two hyperthreads). Sure. But my Pentium III's CPU (perhaps not the OP's) is not the issue. Rather, it's the ability of the mobo and box to host several PATA disks. Here for comparison are some figures for a 2013-vintage Dell AiO 3011, which is permanently on at the wall except when big storms threaten. It runs off a dirty great brick supplying, I assume, the usual 19V. These very approximate mA currents are obviously measured on the 110V side: Powering on at wall switch 200 two second surge Power connected, waiting for NIC wakeup 30 Powering on with its switch 350 one second surge Running, at login prompt 200-250 Unlocking encrypted /home 500 one second surge Starting X 300 Running X 200-250 Starting firefox 300-325 Compiling the linux kernel I no longer do it :) Cheers, David.
