Improve the run performance of this script.

scan AD computers.ps1

# Get All PCs in Domain, Export to ServerList.txt
# Call get-inventory.ps1 logic on created Serverlist.txt
# dk / 22.09.2017
import-module activedirectory

$domain = "carpentier.local" 
$tempfile = "c:\temp\tmpfile.csv"
$outfile = "c:\temp\Serverlist.csv"
Get-ADComputer -Filter * |
select-object Name |
Export-CSV -NoTypeInformation $tempfile 

#Clean up outfile
$clean = Get-Content $tempfile
$clean[1..$clean.count] |
Set-Content $tempfile
cat $tempfile |
%{$_ -replace '"',''} |
Set-Content $outfile

# Do the magic
$servers = Get-Content $outfile
$infoColl = @()
Foreach ($s in $servers)
{
	$CPUInfo = Get-WmiObject Win32_Processor -ComputerName $s #Get CPU Information
	$OSInfo = Get-WmiObject Win32_OperatingSystem -ComputerName $s #Get OS Information
	#Get Memory Information. The data will be shown in a table as MB, rounded to the nearest second decimal.
	$OSTotalVirtualMemory = [math]::round($OSInfo.TotalVirtualMemorySize / 1MB, 2)
	$OSTotalVisibleMemory = [math]::round(($OSInfo.TotalVisibleMemorySize / 1MB), 2)
	$PhysicalMemory = Get-WmiObject CIM_PhysicalMemory -ComputerName $s | Measure-Object -Property capacity -Sum | % { [Math]::Round(($_.sum / 1GB), 2) }
	Foreach ($CPU in $CPUInfo)
	{
		$infoObject = New-Object PSObject
		#The following add data to the infoObjects.	
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "ServerName" -value $CPU.SystemName
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "Processor" -value $CPU.Name
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "Model" -value $CPU.Description
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "Manufacturer" -value $CPU.Manufacturer
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "PhysicalCores" -value $CPU.NumberOfCores
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "CPU_L2CacheSize" -value $CPU.L2CacheSize
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "CPU_L3CacheSize" -value $CPU.L3CacheSize
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "Sockets" -value $CPU.SocketDesignation
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "LogicalCores" -value $CPU.NumberOfLogicalProcessors
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "OS_Name" -value $OSInfo.Caption
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "OS_Version" -value $OSInfo.Version
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "TotalPhysical_Memory_GB" -value $PhysicalMemory
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "TotalVirtual_Memory_MB" -value $OSTotalVirtualMemory
		Add-Member -inputObject $infoObject -memberType NoteProperty -name "TotalVisable_Memory_MB" -value $OSTotalVisibleMemory
		$infoObject #Output to the screen for a visual feedback.
		$infoColl += $infoObject
	}
}
#Export the results in csv file in c:\temp.
$infoColl | Export-Csv -path c:\temp\Server_Inventory_$((Get-Date).ToString('MM-dd-yyyy')).csv -NoTypeInformation