Halo: Campaign Evolved System Requirements
Minimum
OS64-bit Windows
ProcessorAMD Ryzen 5 3600 / Intel Core i7-10700K
Memory16 GB
GraphicsNVIDIA RTX 2060 Super / AMD Radeon RX 6600 / Intel Arc A580
Storage100 GB
Recommended
OS64-bit Windows
ProcessorAMD Ryzen 7 7700 / Intel Core i7-12700K
Memory32 GB
GraphicsAMD Radeon RX 9070 / NVIDIA RTX 3080 Ti
Storage100 GB
Source: Official Steam store page — corroborated by multiple independent outlets