If you want to dump results from a command, there are a number of ways. While they all do the same, they have tremendous performance differences:
PS> (Measure-Command {1..100000 | Out-Null }).TotalMilliseconds 1114,3006 #!!!!!!!!!!! PS> (Measure-Command {$null = 1..100000 }).TotalMilliseconds 29,3192 PS> (Measure-Command {1..100000 > $null }).TotalMilliseconds 38,1542 PS> (Measure-Command {[void](1..100000) }).TotalMilliseconds 28,2378
As you can see, piping results to Out-Null is the worst approach. Instead, simply assign unwanted results to the special variable $null or cast the call to [void].