Date: Thu, 1 Jan 2004 15:29:30 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: cracauer@cons.org Cc: freebsd-hackers@FreeBSD.org Subject: Re: Power consumption in desktop computers Message-ID: <200401012329.i01NTU7E000615@gw.catspoiler.org> In-Reply-To: <20031225224609.A5326@cons.org>
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A few more data points:
System 1 (FreeBSD 4-STABLE)
Pentium II 400
Asus P2B-LS motherboard (fxp + aic7890 Ultra2 SCSI on board)
384 MB ECC RAM
Matrox G20
Floppy
Seagate ST336737LW
Seagate ST39173LW
Plextor PX-R412C CD-R
Tandberg SLR-5
Floppy
Supermicro Case with lots of fans
Idle: 72W / 112VA
Active: 88W / 134VA
System 2 (FreeBSD 4-STABLE)
Aopen AX34-U motherboard
1 GHz Celeron underclocked to 668 MHz (66 MHz FSB instead of rated 100
MHz)
256 MB ECC RAM
cheap PCI video card
IBM IC25N010ATDA04 10 GB laptop drive
1x sis ethernet
1x fxp ethernet
no floppy
90 W (?) power supply
Active(?): 39 W / 57 VA
System 3 (FreeBSD 5-CURRENT)
Gigabyte GA7-DX+ motherboard
Athlon XP 1900+
1 GB ECC RAM
Adaptec 19160B SCSI controller
Seagate ST336706LW
ancient NEC CD-ROM drive
fxp ethernet
g-force 2mx video
floppy
Antec True Power 330W supply
Idle: 135 W / 198 VA
Active: 153 W / 223 VA
The power measurements were made with a Radio Shack "Kill A Watt" meter.
System #3 is my second fastest machine. My 1.5 GHz Pentium-M laptop is
slightly faster on the "make buildworld" benchmark. I haven't gotten
around to measuring its power consumption yet, but it runs a whole lot
cooler than the Athlon and its power supply is rated at 72 W.
The newer Athlon processors would be interesting, except that I haven't
found a motherboard that supports them with ECC RAM. About the only
Athlon motherboards that support ECC RAM use the AMD 761 chipset, which
is getting rather dated.
Has anyone done power consumption measurements on amd64 systems?
There are some Pentium-M motherboards available now that support ECC
RAM. They are targeted at the embedded market and are fairly pricey,
but I would expect them to perform well and have low power consumption.
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