cpu_stress

$NumberOfLogicalProcessors = Get-CimInstance win32_processor | Select-Object -ExpandProperty NumberOfLogicalProcessors

ForEach ($core in 1..$NumberOfLogicalProcessors) {
    start-job -ScriptBlock {
        $result = 1;
        foreach ($loopnumber in 1..2147483647) {
            $result = 1;

            foreach ($loopnumber1 in 1..2147483647) {
                $result = 1;

                foreach ($number in 1..2147483647) {
                    $result = $result * $number
                }
            }

            $result
        }
    }
}