Official specs from Steam

Hello Sunshine 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)
ProcessorIntel® Core™ i7-7700 or AMD™ Ryzen 5 2500x
Memory16 GB RAM
GraphicsNVIDIA GeForce GTX 1060 (VRAM 6GB) / AMD Radeon RX 590 VRAM 8GB or better
DirectXVersion 12
Storage10 GB available space
Additional NotesMinimum requirements are subject to change.

Recommended

NoteRequires a 64-bit processor and operating system
OSWindows 10 (64-bit)
ProcessorIntel Core i5-10400 / AMD Ryzen 5 1600 or better
Memory32 GB RAM
GraphicsNVIDIA GeForce GTX 3060 (VRAM 8GB) / AMD Radeon RX 6600 XT (VRAM 8 GB) or better
NetworkBroadband Internet connection
Storage10 GB available space
Additional NotesRecommended requirements are subject to change.

FAQ

What graphics card do I need for Hello Sunshine?

Minimum: NVIDIA GeForce GTX 1060 (VRAM 6GB) / AMD Radeon RX 590 VRAM 8GB or better. Recommended: NVIDIA GeForce GTX 3060 (VRAM 8GB) / AMD Radeon RX 6600 XT (VRAM 8 GB) or better.

How much RAM does Hello Sunshine need?

Hello Sunshine needs 16 GB RAM at minimum, 32 GB RAM recommended.

How big is Hello Sunshine?

Hello Sunshine requires 10 GB available space.

Does Hello Sunshine run on Mac or Steam Deck/Linux?

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