The requirements for FC Primal are around the same seen in Far Cry 4. The graphics engine used is Dunia Engine 2, which has been around since Far Cry 3. Playing the Far Cry series always benefits from top graphics as you explore the landscape, and so warrants getting PC hardware that matches Far Cry Primal's recommended system requirements. An Intel Core I7 2600K matched with a GTX 780 GPU or better and at least 8 Gigs of system memory to help reach reasonable FC Primal FPS on High graphics setting.
Far Cry goes primitive. The latest Far Cry Primal is set in caveman times, 10,000 BC, complete with woolly mammoths, rhinos, bows and spears.