$destination = "YourDestination"
$name = "MovedDoubles_temp"
if(Test-path $destination\$name){Write-host "Temp folder already created"}
else
{New-Item "$destination\$name" -ItemType Directory}

$allfileshash = gci $destination -recurse | Get-FileHash | Group-Object -Property hash

$doubles = $allfileshash | where {$_.Count -gt 1}

foreach($double in $doubles)
{
    $FilesToMove = $double.group.path

    foreach($FileToMove in $FilesToMove)
    {Move-Item -Path $filetomove -Destination "$destination\$name"}

    $FilesInTemp = GCI "$destination\$name"
    $filecount = $FilesInTemp.count -1
    $filesintemp | sort CreationTime -Descending | select -Last $filecount | remove-item

    GCI "$destination\$name" | Move-Item -Destination $destination
}
Remove-Item $destination\$name