Official specs from Steam

Outlast system requirements

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

Outlast release infoSteam page Check other games

Minimum

OS *Windows XP / Vista / 7 / 8 - 64 bits *
Processor2.2 GHz Dual Core CPU
Memory2 GB RAM
Graphics512 MB NVIDIA GeForce 9800GTX / ATI Radeon HD 3xxx series
DirectXVersion 9.0c
NetworkBroadband Internet connection
Storage5 GB available space
Sound CardDirectX Compatible
Additional Notes* 32 bits systems are not officially supported, but should work if configured to provide 3Gb of user-mode address space. See or

Recommended

OS *Windows Vista / 7 / 8 - 64 bits
Processor2.8 GHz Quad Core CPU
Memory3 GB RAM
Graphics1GB NVIDIA GTX 460 / ATI Radeon HD 6850 or better
DirectXVersion 9.0c
NetworkBroadband Internet connection
Storage5 GB available space
Sound CardDirectX Compatible

macOS minimum

OSOS X 10.9
Processor2.2 GHz Dual Core CPU
Memory4 GB RAM
GraphicsGeForce GT 750M / Intel Iris Pro 5200 / Radeon HD 3xxx
Storage5 GB available space
Sound CardStandard

macOS recommended

OSOS X 10.9
Processor2.8 GHz Quad Core CPU
Memory4 GB RAM
Graphics1GB NVIDIA GTX 460 / ATI Radeon HD 6850
Storage5 GB available space
Sound CardStandard

FAQ

What graphics card do I need for Outlast?

Minimum: 512 MB NVIDIA GeForce 9800GTX / ATI Radeon HD 3xxx series. Recommended: 1GB NVIDIA GTX 460 / ATI Radeon HD 6850 or better.

How much RAM does Outlast need?

Outlast needs 2 GB RAM at minimum, 3 GB RAM recommended.

How big is Outlast?

Outlast requires 5 GB available space.

Does Outlast run on Mac or Steam Deck/Linux?

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