Not my area of expertise please review the photo of the back cover and publisher description below.  Ensure your operating system is compatible please as there are no refunds on this item.

Houdini Aquarium 2017 includes the best chess engine – Houdini 5 UCI, 200 ELO points over its predecessor and capable of supporting 6 cores and 4 GB of hash, a powerful search system, a unique Tree mode, database of 6.6 million games in total (as of November 8, 2016), a Bonus disk Chess Opening Encyclopedia, and 1-year membership at ChessOK Playing Zone.

Houdini PRO Aquarium 2017 also includes Houdini 5 PRO UCI which can support up to 128 cores and 128 GB of hash. You can connect Houdini 5 UCI engine to Chess Assistant, Fritz and ChessBase.