UnRar Metro has new feature password recovery, that cracks encrypted rar and zip files with GPU support.
UnRar Metro uses internal wordlist and incremental generator. In addition, you can use external wordlist. When you choose external wordlist, internal wordlist and incremental generator will disabled.
Internal wordlist contains most used passwords, birthday combinations and web site addresses.
Incremental generator aims try to all combinations. It changed to CPU type and / or GPU support. If GPU disabled, all probabilities will not tried.
For more information about wordlist click here.