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
R51e Gentoo (linux-2.6.24-gentoo-r4) KDE, min. brightness, tp-fancontrol, ondemand, laptop_mode, madwifi-ng (no powersave), wpa_supplicant, ca 60 wakeups 14.5W
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
R61 Xubuntu 7.10 custom kernel 2.6.24, Minimal power consumption with Wireless off, hdd spun down, Backlight min, laptop-mode, ondemand, echo 1 > /sys/devices/system/cpu/sched_mc_power_savings, echo 1500 > /proc/sys/vm/dirty_writeback_centisecs, ALPM on, firewire module unloaded, nvidia, hdaps (powertop 1.9) 10.8W (min) ~16.5W (usable brightness, wifi on) 39.7W (max, kernel compilation with -j3 option)
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 1400x1050 panel @ min brightness, hald killed, laptop mode enabled, wireless powersave 13.3 W
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
T61 Ubuntu 8.04 14" 1024x768 panel,intel graphics, 6% bright, wireless off, vanilla kernel 2.6.25 9.5W
T61 Gentoo 2008.0 14" 1440x900 panel, nVidia, min brightness, wireless off, sound off, nvidia unloaded, laptop_mode, gentoo-sources 2.6.25-gentoo-r6, measured with powertop ~13W
X200s Arch Linux 2.6.27.9, idle kde3, hda_intel power_save 5, HDD stopped, min brightness, radios off, pcie_aspm in powersave, 8bit color depth 6.2W
X200s Arch Linux SL9400, 12.1" 1440x900 panel, min. brightness, wifi/bt off 7.2W
X200s Arch Linux 2.6.27.8, idle kde3 (9 int/s), hda_intel power_save 5, HDD stopped, min brightness, radios off, pcie_aspm in powersave 7.3W
X200s Arch Linux 2.6.27.8, kde3+firefox+daemons, hda_intel power_save 5, HDD spinning up/down, brightness 6/15, wifi on, pcie_aspm in powersave 8.7W
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
X32 Slackware 2.6.23.1+hrt3 patch, tickless kernel, undervolted to 0.716, ati gfx @ 90mhz core 90mhz mem, hdd is CF, min brightness, wifi ON ~ 8.2 W
X32 Slackware 2.6.23.1+hrt3 patch, tickless kernel, undervolted to 0.716, ati gfx @ 90mhz core 90mhz mem, hdd is CF, max brightness, wifi ON ~ 11 W
X40 Kubuntu 7.10 2.6.22, min brightness, wifi ON ~8.7W
X40 Opensuse 11.0; June08 std. install + laptop-mode-tools.rpm; 2.6.25, min brightness, wifi on. normal X-server, hd spun down ~8.0W
X41 Fedora 7 2.6.23.1+phc patch, tickless kernel, undervolted to 0.7, under X, min brightness, wifi ON ~11W
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
X61 Tablet Xubuntu Gutsy 2.6.24-rc3, everything unloaded, lcd backlight 10%, hd powered down, powertop 1.8 7,8W
X61s (7666-36G) Debian Sid 2.6.27.7, everything unloaded, HD spinned down, xbacklight -set 0, idle Xfce desktop, SATA poweroff patch, Xorg intel driver with framebuffer compression enabled 8,4W