create powershell script to get result of get-wmiobject with if and elsif statement

hello I want to use get-wmiobject to totalphysicalmemory, and numberofcores, and array contain several processes should be compared with get-process result they should be two conditions true or false for example if totalphysical memory =< 20158 MB the script should exit if the numberofcore =< 2 the script should exit otherwise it will contiue I already coded some lines but of course need fine-tune please find the code below ------------CODE START HERE------------------ $CPU = get-wmiobject -class win32_processor | select-object -property NumberOfCores #$Mem = get-wmiobject -computer localhost win32_computersystem | select-object @{n="";e={[math]::truncate($[login to view URL] / 1MB)}} Foreach ($D in $CPU) { $CPU = $[login to view URL] If ($[login to view URL] -le $2) {Write-Host "$denied"} Sleep 5 Elseif #$Mem = $[login to view URL] ($[login to view URL] -le $2048) {Write-Host "$denied"} Sleep 5 Else {Write-Host "$success"} } @("[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]","[login to view URL]") | Foreach-object { if((Get-Process $_ -ErrorAction SilentlyContinue) -eq $null) {Write-Host "$success"} else {Write-Host "$denied"} end if ------CODE END HERE-----