Measuring late vs early filtering

$eftotal = $lftotal = 0
"{0,15} {1,15} {2,15}" -f "Early Filter", "LateFilter", 'Difference'

1..1000 | foreach {

$ef = (Measure-Command {
Get-Process Power*
}).milliseconds
$eftotal +=$ef

$lf = (Measure-Command {
Get-Process | Where-Object name -like Power*
}).Milliseconds
$lftotal += $lf

$diff = $ef - $lf
#"{0,15:n1} {1,15:n1} {2,15:n1}" -f $ef, $lf,$diff
}

$tdiff = $eftotal - $lftotal
"{0,15:n1} {1,15:n1} {2,15:n1}" -f $eftotal, $lftotal,$tdiff