itherm(4)

itherm4

Intel 3400 temperature sensor

Usage

itherm* at pci?

Overview

The itherm driver provides support for several sensors found in Intel 3400 and 5 series chipsets.

The sensors currently exposed via the sysctl(8) interface are:

SensorUnitsTypical Use
ThermometerdegCTemperature
Core 1degCTemperature
Core 2degCTemperature
CPU power cons.WattsPower usage
CPU/GPU MaxdegCTemperature
DIMM 1degCTemperature
DIMM 2degCTemperature
DIMM 3degCTemperature
DIMM 4degCTemperature
GPU abs.degCTemperature
PCH abs.degCTemperature

Caveats

Not all sensors are wired on every machine, so the list of sensors shown in sysctl(8) may not show all the sensors listed above. Furthermore, the itherm driver will flag sensors as invalid if they report bogus data.

Releases

34 releases since OpenBSD 4.8; the text changed 2 times.

  1. 4.8–5.0
  2. 5.1–5.3
  3. 5.4–8.0

History

The itherm driver first appeared in OpenBSD 4.8.

Authors

The itherm driver was written by Mike Larkin ⟨[email protected]⟩.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.