---
name: "pchtemp"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/pchtemp"
---

# pchtemp(4)

Intel PCH temperature sensor

## NAME

**pchtemp** – Intel PCH temperature sensor

## SYNOPSIS

**pchtemp\* at pci?**

## DESCRIPTION

The **pchtemp** driver provides support for the temperature sensor in the Intel X99, C610 series, 9 series and 100 series platform controller hub (PCH).

These sensors provide 0.5 degC resolution. Sensor values are made available through the [sysctl(8)](/sysctl/8.md) interface.

## SEE ALSO

[intro(4)](/intro/4.md), [pci(4)](/pci/4.md), [sensorsd(8)](/sensorsd/8.md), [sysctl(8)](/sysctl/8.md)

## HISTORY

The **pchtemp** driver first appeared in OpenBSD 5.9.

## AUTHORS

The **pchtemp** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.

## CAVEATS

The temperature sensor only attached if it has been enabled by the BIOS.