Official specs from Steam

Octopath Traveler system requirements

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

Minimum

NoteRequires a 64-bit processor and operating system
OS *Windows® 7 SP1 / 8.1 / 10 64-bit
ProcessorAMD FX-4350 / Intel® Core™ i3-3210
Memory4 GB RAM
GraphicsAMD Radeon™ R7 260X (2GB VRAM) / NVIDIA® GeForce® GTX 750(2GB VRAM)
DirectXVersion 11
Storage5 GB available space
Sound CardDirectX Compatible Sound Card
Additional Notes30+ FPS @ 1280x720 / graphics preset “LOW”

Recommended

NoteRequires a 64-bit processor and operating system
OS *Windows® 7 SP1 / 8.1 / 10 64-bit
ProcessorAMD Ryzen™ 3 1200 / Intel® Core™ i5-6400
Memory6 GB RAM
GraphicsRadeon™ RX 470(4GB VRAM) / NVIDIA® GeForce® GTX 1060 6 GB VRAM
DirectXVersion 11
Storage5 GB available space
Sound CardDirectX Compatible Sound Card
Additional NotesExpected Framerate: 60 FPS @ 1920x1080 / Graphics preset: “Very High”. Depending on the monitor and PC graphics card environment and setup used, this title can expand its display resolution to 4K. However, please be aware that 4K resolutions are not officially supported

FAQ

What graphics card do I need for Octopath Traveler?

Minimum: AMD Radeon™ R7 260X (2GB VRAM) / NVIDIA® GeForce® GTX 750(2GB VRAM). Recommended: Radeon™ RX 470(4GB VRAM) / NVIDIA® GeForce® GTX 1060 6 GB VRAM.

How much RAM does Octopath Traveler need?

Octopath Traveler needs 4 GB RAM at minimum, 6 GB RAM recommended.

How big is Octopath Traveler?

Octopath Traveler requires 5 GB available space.

Does Octopath Traveler run on Mac or Steam Deck/Linux?

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