If you are running the legacy version, it has very low requirements by today's standards:
While there is no "official" standalone version of Halo: Combat Evolved (Halo 1) currently offered for free by Microsoft, there are several ways to access the game or its content today. Most official digital sales of the 2003 PC port were discontinued in 2020. Official & Current Methods If you are running the legacy version, it
: You can find original disk images and files preserved on the Internet Archive . If you are running the legacy version, it
: This is the modern, official way to play. It features remastered 4K graphics, 60+ FPS, and the ability to toggle back to original 2001 graphics at any time. If you are running the legacy version, it