Penumbra: Requiem minimum requirements.

OS: Windows 2000/XP
Processor: 1.5 Ghz
Memory: 512 MB
Disc Space: 2.0 GB Free Hard-drive space
Video Card: ATI Radeon 8500/NVIDIA GeForce 3 (GeForce4MX not supported)

Requirements slightly higher as the Expansion requires Penumbra: Black Plague to be installed and because the expansion includes more detailed and complicated levels, with higher numbers of light sources than previous games.

See related articles on how to find out your computer specifications.