Total War Saga - Fall of the Samurai is a rebranding of Total War: Shogun II - Fall of the Samurai. It is the exact same game rebranded to join the Total War Saga spin-off series. However, it does include all released DLC faction packs from the historial grand strategy game.
Total War Saga: Fall of the Samurai System Requirements
PC System Analysis For Total War Saga: Fall of the Samurai Requirements
Your PC will need a graphics card thats as powerful as a GeForce GTS 250/Radeon HD 5670 1024MB and it should be paired with either a Phenom II X4 905e/Core i3-2120T 2.6GHz CPU to match the Total War Saga: Fall of the Samurai recommended system specs. This PC setup will deliver 60 Frames Per Second on High graphics settings on 1080p monitor resolution. You should also have 1 GB system memory for min specs. Another thing to consider is the DirectX capability of your GPU. Total War Saga: Fall of the Samurai needs a GPU capable of running DirectX 11. In short you need a 11 year old PC for best Total War Saga: Fall of the Samurai performance.