Official specs from Steam

Call of Duty: Black Ops III system requirements

Minimum and recommended PC specs as listed by the developer on Steam. Native macOS version available.

Minimum

OS *Windows 7 64-Bit / Windows 8 64-Bit / Windows 8.1 64-Bit
ProcessorIntel® Core™ i3-530 @ 2.93 GHz / AMD Phenom™ II X4 810 @ 2.60 GHz
Memory6 GB RAM
GraphicsNVIDIA® GeForce® GTX 470 @ 1GB / ATI® Radeon™ HD 6970 @ 1GB
DirectXVersion 11
NetworkBroadband Internet connection
Storage100 GB available space
Sound CardDirectX Compatible

macOS minimum

OS10.13.6 (High Sierra) or later
ProcessorIntel® Core™ i5 (4 Cores) @ 2.3 GHz
Memory8 GB RAM
GraphicsATI® Radeon™ M295X @ 2GB
NetworkBroadband Internet connection
Storage150 GB available space
Additional NotesNVIDIA and Intel GPUs are not officially supported hardware.

FAQ

What graphics card do I need for Call of Duty: Black Ops III?

Minimum: NVIDIA® GeForce® GTX 470 @ 1GB / ATI® Radeon™ HD 6970 @ 1GB.

How much RAM does Call of Duty: Black Ops III need?

Call of Duty: Black Ops III needs 6 GB RAM at minimum.

How big is Call of Duty: Black Ops III?

Call of Duty: Black Ops III requires 100 GB available space.

Does Call of Duty: Black Ops III run on Mac or Steam Deck/Linux?

Yes, there is a native macOS version. There is no native Linux build (Proton compatibility may vary).