Menu Energy Efficient Computing
 

Energy use by ICT devices

Updated: august 13 2005
 
Here I will gather data on the electricity use of ICT devices, mainly monitors and PC's.
All models European versions; 215-230 volt, 50Hz AC
Everything measured with Prodigit Electronics Model 2000Mu power meter, which is not absolute. A friends power meter measured 2,5 watts more in comparison.

Boyd Noorda, Socia Media

Energy use CRT monochrome monitors in watts run under DOS unless other stated
Year and model
white screen
black screen
(DOS prompt)
no signal
(PC off)
1984 Taxan KX-1203E, 12" amber, composite video
(factory rated 25 watt)
16
14
16
1984 IBM Personal Computer Display 5151, 12" green
25
23
7
1985 Philips BM 7522/00G, 12" amber, composite video
Onboard small audio amp. and speaker
24
23
22
1988 ASI model HMM-1200, 12" amber
22
19
6
1989? TRL, 13" 'paperwhite'
21
18
19-20
1989 LCD Philips PM11211 & AVQ100 controller, monochrome 10" EGA monitor
10
10
5
(light source switches off)
1989 IBM PS/2 Monochrome Display 8503, 12" VGA 640x480
32 (Windows)
28-29
30


Energy Use VGA CRT color monitors in watts at 32 bit colors unless other stated.
DOS = 640x480 black screen and prompt.

14 inch, year and model
white desktop
gray desktop
black desktop
DOS
Standby
Sleep
1996 Compaq 140 Monitor, 800x600, 75 Hz, 24 bit 71
62
56
47
2

1998 Funet 1454GD, 800x600, 75 Hz
(factory rated 75 watt)
65
59
53
44
4

15 inch, year and model
white desktop
gray desktop
black desktop
DOS
Standby
Sleep
1997 Tulip XVGA, 800x600, 75 Hz, 16 bit
74
65
61
55
8
3
1997 Highscreen MS 1595P, 800x600, 85 Hz
63
58
54
46
3

1999 Highscreen MS 1590P,
800X600, 72 Hz
64
54
48
41
9
0,5
1999 Acer AcerView 57c, 800x600, 75 Hz, 16 bit
53
47
43
36
< 0,5
< 0,5







17 inch, year and model
white desktop gray desktop black desktop DOS
Standy
Sleep
1994 ADI MicroScan 5EP, 1024x768, 75 Hz
87
72
63-64
57
5

1997 Iiyama Vision Master 17, MF-8617T, 1024x768, 85 Hz
94
83
75
61
3

1998 CTX 1769SE, 1024x768, 75 Hz
77
66
58
47
9

2002 Liteon xx, 1280x1024, 60 Hz
60
51
44
35
1

2002 Liteon xx, 1025x768, 75 Hz
58
48
42
35
1

2003 Trust Pro Visual 17", 800x600 75 Hz
61
56
45
41
0,5

2004 Philips 107T5, 800x600 85 Hz
'Light frame' setting not measured
56
48/49
46
40
1



Energy use LCD/TFT color monitors in watts
19 inch monitors 2005
Going price june 2005
in The Netherlands
Watt
Acer AL1921HS
€ 469
32-33
Benq FP9375S+
€ 499
31-32
Eizo L767
€ 699
30-31
Fujitsu Siemens C-19-3
€ 349
26-27
HP VS19
€ 359
30
Iiyama ProLite 481S-S
€ 419
28
Samsung Syncmaster 912N
€ 389
28
Samsung Syncmaster 913N
€ 289
24
LG  L1950G
€ 399
28
LG 1980
€ 699 28-29
Neovo F-419
€ 329
27-28

Energy use DOS PC's in watts
Year and model
Extra's
idle (prompt)
stress
1985 Home/office MSX2 computer Philips VG-8235, Zilog Z80, 64 Rom, 128 Ram, 3.5 360 Kb floppy, MSX-DOS and MSX Basic
can run software from insertable cardridges
9

1987 Home build PC XT, Nec V20 12 Mhz (2.5-3x IBM PC speed), 1024 Kb Ram, 20 Mb HD, 5.25" 360 Kb floppy, MS-DOS 3.3
memory above 640Kb for printerspooler and RAMdisk, 3.5" 720Kb floppy, Hercules videocard, ISA V22 card modem
38-39
38-39
1989 Laser PC XT/3-8086, Intel 8086 10 MHz (2.5-3x IBM PC speed), 640 Kb Ram, 20 Mb HD, 5.25" 360 Kb floppy, MS-DOS 3.3 3.5" 720Kb floppy, ISA V22 card modem
4.77 MHz: 40-41
10 MHz: 42
burn-in test hangs





Energy use Windows PC's in watts
'Stress' = 100% processor load, running Prime95 or other heavy stuff. This is without disk activity however. Therefor peak values may be up to 20 watts higher, or even more when extra cooling kicks in.
'NIC' = network card, 'Off' = switched off, but still connected to mains.
Year and model
Extra's
idle
stress standby
hybernate
DOS idle
'Off'
1994 Fast barebone 486, AMD486 80 MHz, 12 Mb Ram, on board video, floppy only
2 x NIC
(no HD)




20 running Linux firewall

1994 Fast budget 486, AMD486 80 MHz, 32 Mb Ram, floppy, video card, CDRom, 365 Mb HD, Windows 95 OSR2

1 Gb HD, NIC

38,
hardware clock stop (from BIOS): 30 watt with HD's on
38
32
(both HD's off)

36
clock stop: 29 w. HD's on, 24 w. HD's off

0
1996 Office PC Compaq Deskpro 4000 5133, Pentium 133 MHz, 32 Mb Ram, floppy, 1 Gb HD, NIC, custom PSU, Windows 95 OSR2
(no CDRom)
37
41
 24 'interrupted' (onderbreken) w. HD on

36

1997 Office PC Tulip Vision Line dt 5/200, Standard, Pentium 200 MHz, 64 Mb Ram, floppy, on board video, CDRom, 1,6 Gb HD, NIC, custom PSU, Windows 95 OSR2

37,
26 with PM
41
21
(HD off)

37
0
1997 Office PC Tulip Vision Line dt 5/200, Upgraded, Pentium 200 MHz, 64 Mb Ram, floppy, CDRom, 3,2 Gb HD, NIC, custom PSU, Windows 98SE
1997 videocard Matrox MGA Mystique 4 Mb,  2004 USB flashcard reader (1 watt)
29
41


36
0
1997 Dyme PII Portland, upgraded, Pentium 266 MHz, 128 Mb Ram, floppy, 2002 10 Gb HD, CDRom, CD-RW, Windows 98SE
2000 32 Mb video, NIC, SCSI card, 2002 40 Gb HD
48
77
36; does not wake up

73
1
Year and model
Extra's
idle
stress
standby
hybernate
DOS idle
'Off'
1998 Home build, AMD K6 233 MHz, 64 Mb Ram, floppy, 8 GB HD, CDRom, Windows 98SE
1999 32 Mb video, NIC, PCI ATA100 HD controller, PCI USB adaptor
70
76-77
25 (HD stays on)

70
0
1999 Compaq Proliant 400 (small server), Pentium 350 MHz, 64 Mb Ram, 4.3 Gb SCSI HD, CDRom, Windows 2000
SCSI CD-RW, PCI ATA 100 HD controller, 40 Gb IDE HD, PCI sound card
50
66
peaks: 69
one HD off: 47
(SCSI does not spin down)
crashes
61-62
2-3
2002 Dell Dimension 4500, Pentium 2 GHz, 512 Mb Ram, floppy,  40 Gb HD, DVD Rom, CD-RW, Windows XP Home

55
100, peaks: 118



1
2003 Paradigit Enforcer, Pentium 2,4 GHz, 512 Mb Ram, floppy, 80 Gb HD, Combo DVD Rom CD-RW,  Windows XP Home
PCI modem card.
Win: Needs 2 stress programs to reach 100% CPU, throttles to 50% with one.
Linux Prime: 116
peaks: 123

64
105
peaks: 117

5
3
86
3
2003 Vobis Celeron 1,7 MHz, 256 Mb Ram, 40 Gb HD, DVDRom, CD-RW, Windows XP Home SP2

60
101
peaks: 106
43 (HD off)
3
80
3
2004 Budget PC, Kompukoos 2600, Celeron 2,6 GHz, 256 Mb Ram, floppy, onboard video, 40 Gb HD, DVDRom, CR-RW, Windows XP Home
PCI modem card
48
88
peaks: 100
3

70
3
2004 Dell Dimension 4600, Pentium 2,8 GHz, 512 Mb Ram, 80 Gb HD, combo DVD CD-RW, Windows XP Home
(no floppy)
52
114
peaks: 127
2
1

1
Year and model
Extra's
idle
stress
standby
hybernate
DOS idle
'Off"
2005 HP Pavilion, AMD Athlon 64 3500+, 512 Mb Ram, 200 Gb HD, DVDRom, DVD-RW, Windows XP Home SP2
modem, 801b/g wireless, USB floppy
N.B. No power options and hibernate configured in HP install!
65
135/136
prevented by HP printer driver/interface!
prevented by HP printer driver/interface! 113
1








Still have to find some power houses, like Pentium 3,8 GHz PC's :)








Energy use laptops in watts (on AC power, full battery)
'Stress' = 100% processor load, running Prime95 or other heavy stuff. This is without disk activity however.
'Off' = full battery, power supply connected to mains. Standby = screen and HD off (+ hidden extra's?).

Year and model
extra's
idle
stress
standby
hibernate
DOS idle
'Off'
1989 Triumph-Adler L 21 (Olivetti), 80C286 16 MHz / 8 MHz , 1 Mb Ram, 256 Kb Video Ram, 20 Mb HD,  monochrome LCD 640x400, MS-DOS 3.3
(pre Windows)
manual switch for 16 or 8 MHz
16 MHz: 18
8 MHz: 17
16 MHz: 19 peaks: 21
8 MHz: 18 peaks: 20
16 MHz: 12
8 MHz: 11

DOS only laptop
4
charging: 12-14
1995 Acer AcerNote 760iC, Cirix 486DX2/66 66 MHz, 20 Mb Ram, floppy, (newer) 777Mb HD, 256 color LCD 640x480, Windows 95 OSR2, not customized
PCMCIA modem
(no fan :)
16
(with/without PM)
16
peaks: 18
(with/without PM)
screen off: 10-11
HD also off: 10
2
14
2
charging: 27-32
2000 Toshiba Portégé 7220CTe, Mobile Pentium III 650 MHz, 128 Mb Ram, 12 Gb HD, 13.3" 1024x768 TFT, Windows 98SE, Toshiba customized
docking station:
DVD Network Dock II with NIC,  speakers, DVDRom, floppy
undocked:
max power saving: 17

performance: 18


docked:
max power saving: 20

performance: 21
undocked:
max power saving: 19
peaks: 21
performance and fan max: 36-37
peaks: 39
docked:
max power saving: 21-22
peaks: 23
performance and fan max: 40-41
peaks: 42
2-3
2

35-36, fan stays on
2
charging: 7-13
2005 Apple iBook G4 1.2 GHz, 768 Mb Ram, 60 Gb HD, 12" 1024x768 TFT, MacOS 10.4
Combo CD-RW DVD-R
'Better  performance' : 11
Better  performance': 27
1

Single user mode: 11
1


watt graph

(The light green dot is Boyd's energy efficient PC)

More on this graph: see the menu