Poker Championship minimum requirements for Windows assume having at least Windows 8 or higher operating system. Your processor should be 2.0 GHz or a more powerful one. The minimum RAM requirement is 1 GB. As for a graphics card, it should be Direct X 9 compatible, and it should support Direct X Version 9.0. You also have to have 1 GB free disk space to install the game.
As for Mac OS, Poker Championship requirements here start with Mac OS X 10.9 or higher operating system. Processor needs to be at least 1.0 Ghz. 1 GB of RAM is required. Your graphics card should be Direct X 11 compatible. Finally, the game needs 500 MB of free disk space.