In this section you will learn how to get CPU data including current speed and temperature:

For function reference and examples we assume, that we imported systeminformation as follows:

const si = require('systeminformation');

CPU Data

All functions in this section return a promise or can be called with a callback function (parameter cb in the function reference)

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.cpu(cb)	{...}	X	X	X	X		CPU information object
	manufacturer	X	X	X	X		e.g. 'Intel(R)'
	brand	X	X	X	X		e.g. 'Core(TM)2 Duo'
	speed	X	X	X	X		in GHz e.g. '3.40'
	speedmin	X		X	X		in GHz e.g. '0.80'
	speedmax	X	X	X	X		in GHz e.g. '3.90'
	cores	X	X	X	X		# cores
	physicalCores	X	X	X	X		# physical cores
	processors	X	X	X	X		# processors
	socket	X	X		X		socket type e.g. "LGA1356"
	vendor	X	X	X	X		vendor ID
	family	X	X	X	X		processor family
	model	X	X	X	X		processor model
	stepping	X	X	X	X		processor stepping
	revision	X		X	X		revision
	voltage		X				voltage
	cache	X	X	X	X		cache in bytes (object)
	cache.l1d	X	X	X	X		L1D (data) size
	cache.l1i	X	X	X	X		L1I (instruction) size
	cache.l2	X	X	X	X		L2 size
	cache.l3	X	X	X	X		L3 size
si.cpuFlags(cb)	: string	X	X	X	X		CPU flags
si.cpuCache(cb)	{...}	X	X	X	X		CPU cache sizes object
	l1d	X	X	X	X		L1D size
	l1i	X	X	X	X		L1I size
	l2	X	X	X	X		L2 size
	l3	X	X	X	X		L3 size
si.cpuCurrentspeed(cb)	{...}	X	X	X	X	X	current CPU speed (GHz) object
	avg	X	X	X	X	X	avg CPU speed (all cores)
	min	X	X	X	X	X	min CPU speed (all cores)
	max	X	X	X	X	X	max CPU speed (all cores)
	cores	X	X	X	X	X	CPU speed per core (array)
si.cpuTemperature(cb)	{...}	X	X	X*	X		CPU temperature (if supported)
	main	X	X	X	X		main temperature (avg)
	cores	X	X	X	X		array of temperatures
	max	X	X	X	X		max temperature