Official specs from Steam

Phase Zero system requirements

Minimum and recommended PC specs as listed by the developer on Steam.

Minimum

NoteRequires a 64-bit processor and operating system
OSWindows 10 64-bit
ProcessorQuad-core Intel or AMD processor with a clock speed of at least 2.5 GHz.
Memory8 GB RAM
GraphicsNVIDIA GeForce GTX 770 or AMD Radeon R9 280, or equivalent with DirectX 11 or DirectX 12 support.
DirectXVersion 12
Storage10 GB available space
Sound CardYes

Recommended

NoteRequires a 64-bit processor and operating system
OSWindows 10 64-bit
ProcessorQuad-core Intel or AMD processor with a clock speed of at least 2.5 GHz.
Memory8 GB RAM
GraphicsNVIDIA GeForce GTX 770 or AMD Radeon R9 280, or equivalent with DirectX 11 or DirectX 12 support.
DirectXVersion 12
Storage10 GB available space
Sound CardYes

FAQ

What graphics card do I need for Phase Zero?

Minimum: NVIDIA GeForce GTX 770 or AMD Radeon R9 280, or equivalent with DirectX 11 or DirectX 12 support.. Recommended: NVIDIA GeForce GTX 770 or AMD Radeon R9 280, or equivalent with DirectX 11 or DirectX 12 support..

How much RAM does Phase Zero need?

Phase Zero needs 8 GB RAM at minimum, 8 GB RAM recommended.

How big is Phase Zero?

Phase Zero requires 10 GB available space.

Does Phase Zero run on Mac or Steam Deck/Linux?

There is no native macOS version. There is no native Linux build (Proton compatibility may vary).