Idle consumptions

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This page reports the minimal consumptions of Thinkpads when idle. This means, in principle: minimum brightness, CPU and GPU at lowest speed, no wifi, hard drive spun down, no pcmcia cards inserted (see details of each entry).

This kind of information has several uses: comparing one's consumption with that of other people's setups, knowing which model to use as a gateway/file server, etc.


Model OS Remarks consumption
600E PII/366 Debian Lenny/2.6.21 gnome back light off, laptop-mode-tools enabled, fan on, idling, measured with powertop 6W
600E PII/366 Debian Lenny/2.6.21 gnome Min brightness, laptop-mode-tools enabled, fan on, idling, measured with powertop 7.5W
600E PII/366 Debian Lenny/2.6.21 gnome Max brightness, laptop-mode-tools enabled, fan on, idling, measured with powertop 9.2W
600E PII/366 Debian Lenny/2.6.21 gnome Max brightness, laptop-mode-tools enabled, fan on, 100% cpu utilisation, measured with powertop ~22W
600E PIII/450 Archlinux 0.8/xfce 9W
R50e Gentoo (linux-2.6.22-rc4 force_HPET, fluxbox) With Networking, USB, firefox, thunderbird 11.1W
R50e Gentoo (linux-2.6.22-rc4 force_HPET, fluxbox) Fluxbox + shell (+fan) 10.5W
R50e Gentoo (linux-2.6.22-rc4 force_HPET, fluxbox) Blank Screen after 20min idle (+fan) 7.1W
R52 Gentoo (linux-2.6.22-rc6 + phc + hrt) Min brightness, tp-fancontrol, ipw2200 with power_save 5, undervolted, ondemand, laptop_mode, rovclock -c 100 -m 100
virtual console (idle kde desktop adds about 0.2W)
12.1W
R61 Ubuntu 7.04 Wireless on 16.4W
T23 Ubuntu 7.04 10.7W
T40 Gentoo (2.6.23-rc6-hrt2) Bg-timer patch, HPET-patches, radeon, rovclock -c 105 -m 122, no DRI, sound power_save = Y, min. brightness, no networking, with USB, Laptop-Mode, X & 1x URxvt 7,4W
T41p Ubuntu 7.10 Undervolted, fglrx, no dri; fan->+0.5W, powerstate=2->+0.7W, HD->+1.5W, no usb 7.7W
T42 (2373) Debian 4.0 Etch Kernel 2.6.21_rc5 + hrtimer, rovclock -c 100 -m 120 (Radeon M10), no DRI, min bright. (+3W max), no wifi (+1W if idle) 9.4W
T43 (1871) Debian (Linux 2.6.21, fluxbox) DRI, alsa (power_save=1), with usb, no networking 10.1W (12.0W with HD)
T43 (2669) Gentoo (2.6.20-gentoo-r5) Undervolted, fglrx (powerstate=1), DRI, no alsa, no usb modules, no networking 12.7W
T43 (2686) Fedora Core 6 (2.6.19.x patched) Undervolted, radeon, rovclock -c 125 -m 130, no DRI, ALSA power_save=1, no usb modules, no networking, min brightness, HDD spun down 15W
T60 (2007) Fedora Core 6 Wireless kill switch on, 1400x1050 panel @ min brightness, fglrx (powerstate=1), HDD spun up (~1W saving without) 16W
T60 (2007) KUbuntu 7.04 Wireless on, 1680x1050 panel @ medium brightness, fglrx (powerstate=1) 16W
T60 (2623D6U) Debian testing (linux-2.6.21-1-686) 1400x1050 14" min-bright, iwpriv wlan0 set_power 7, VESA driver 12,7W
X21 Kubuntu 7.04 Minimal consumption with kde loaded. 5.5W
X31 Debian Etch 2.6.22rc6+hrt1 patch+radeon patch ~ 8 W
X31 (2672-C2G) Debian Etch vanilla 2.6.23rc8 tickless kernel, wireless rf-kill on, min brightness, hdd idle but spinning ~ 9.6 W
X60 Ubuntu 7.04 Wireless kill switch on, min brightness 10.2W
X60s Debian Etch 2.6.21 tickless kernel, processes tweaked with powertop, usb/fw unloaded, hd spun down, min brightness, ipw3945 set to powersave mode 7 8.3W
X60s Debian Etch 2.6.21 tickless kernel, processes tweaked with powertop, usb/fw unloaded, hd spun down, min brightness,ipw3945 unloaded 9W
X60s Debian Lenny(testing) 2.6.22 tickless kernel, hrt-patch, alpm-patches, almost everything unloaded (wifi,pcmcia,ethernet,usb,firewire,sd,snd) and stopped (no X11,only cron/syslog), no vesa-fb, min brightness, 5 min idle, measured with powertop 1.7 (ACPI) 7.7W
X60s Debian Lenny(testing) 2.6.22 tickless kernel, hrt-patch, alpm-patches, almost everything unloaded (wifi,pcmcia,ethernet,usb,firewire,sd,snd), with X11 (latest intel-xorg-driver, DRI enabled) and one x-terminal running, min brightness, 5 min idle, measured with powertop 1.7 (ACPI) 8.3W
X61 Tablet Ubuntu Gutsy(tribe6) 2.6.23-rc6-hrt1 x86_64, everything unloaded & stopped, lcd backlight off, hd powered down, powertop 1.8 8.5W