Official specs from Steam

Pillars of Eternity II: Deadfire system requirements

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

Minimum

Note	Requires a 64-bit processor and operating system
OS *	Windows Vista 64-bit or newer
Processor	Intel Core i3-2100T @ 2.50 GHz / AMD Phenom II X3 B73
Memory	4 GB RAM
Graphics	DirectX 11 Compatible
Storage	45 GB available space
Sound Card	DirectX Compatible Sound Card

What graphics card do I need for Pillars of Eternity II: Deadfire?

Minimum: DirectX 11 Compatible. Recommended: NVIDIA GeForce GTX 960.

How much RAM does Pillars of Eternity II: Deadfire need?

Pillars of Eternity II: Deadfire needs 4 GB RAM at minimum, 8 GB RAM recommended.

How big is Pillars of Eternity II: Deadfire?

Pillars of Eternity II: Deadfire requires 45 GB available space.

Does Pillars of Eternity II: Deadfire run on Mac or Steam Deck/Linux?

Yes, there is a native macOS version. A native Linux build is available.

Note	Requires a 64-bit processor and operating system
OS	Windows 10 64-bit or newer
Processor	Intel Core i5-2400 @ 3.10 GHz / AMD Phenom II X6 1100T
Memory	8 GB RAM
Graphics	NVIDIA GeForce GTX 960
Storage	45 GB available space
Sound Card	DirectX Compatible Sound Card