Here are the Halo Wars 2 System Requirements (Minimum)
CPU: Intel Core i5-2500 / AMD FX-4350
CPU SPEED: Info
RAM: 6 GB
VIDEO CARD: AMD Radeon HD 7750 / NVIDIA GeForce GTX 650 / Intel HD Graphics 4000 with 2 GB
DEDICATED VIDEO RAM: 2 GB
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: 64-bit Windows 10
FREE DISK SPACE: 25 GB

Halo Wars 2 Recommended Requirements
CPU: Intel Core i5-4690K / AMD FX-8350
CPU SPEED: Info
RAM: 8 GB
VIDEO CARD: AMD Radeon RX 480 / NVIDIA GeForce GTX 1060 with 4 GB
DEDICATED VIDEO RAM: 4 GB
PIXEL SHADER: 5.1
VERTEX SHADER: 5.1
OS: 64-bit Windows 10
FREE DISK SPACE: 25 GB