$proc = Get-WmiObject -class win32_process -computer fvrrd06 | where-object {$_.Commandline -eq 'C:\Windows\System32\svchost.exe -k termsvcs' }
$memory = (Get-WmiObject -class Win32_PerfRawData_PerfProc_Process -computer | where-object {$_.IDProcess -eq $proc.ProcessID}).WorkingSetPrivate
value in task manager = WorkingSetPrivate / 1024
HTH