Official specs from Steam

Psychonauts system requirements

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

Minimum

OS *Windows 98 SE/2000/XP
Processor1.0 GHz Pentium(R) III and AMD Athlon(tm)
Memory256 MB of RAM
Graphics64 MB GeForce (tm) 3 or higher or ATI(R) Radeon 8500 or higher (except GeForce 4 MX and Go series)
DirectX®version 9.0 or higher (included with game)
Hard Drive3.75 GB minimum hard drive space
SoundDirectX&reg 9.0 or higher compatible sound card
ControlsWindows-compatible keyboard and mouse

Recommended

OS *Windows 2000/XP
Processor2.0 GHz Pentium(R) IV and AMD Athlon(tm)
Memory512 MB of RAM
Graphics, 128 MB GeForce FX 5600 or higher or ATI(R) Radeon 9600 or higher
DirectX®version 9.0 or higher (included with game)
Hard Drive6.0 GB minimum hard drive space
SoundDirectX&reg 9.0 or higher and Sound Blaster Audigy 2 series sound card
ControlsGame Pad (optional)

macOS minimum

OSSnow Leopard 10.6.8, or later.
ProcessorIntel Core Duo Processor
Memory2 GB of RAM
GraphicsATI X1600 / NVIDIA 8600GT / Intel HD3000 or better card with at least 128 MB VRAM
Hard Drive4GB minimum hard drive space
ControlsKeyboard and Mouse
NoteLeopard is not supported

macOS recommended

OSSnow Leopard 10.6.8, or later.
ProcessorIntel Core i Series Processor
Memory4 GB RAM
GraphicsATI HD 3870 / Nvidia 8800GT or better with at least 512 MB VRAM
Hard Drive4GB minimum hard drive space
ControlsGame Pad (optional)
NoteLeopard is not supported

FAQ

What graphics card do I need for Psychonauts?

Minimum: 64 MB GeForce (tm) 3 or higher or ATI(R) Radeon 8500 or higher (except GeForce 4 MX and Go series). Recommended: , 128 MB GeForce FX 5600 or higher or ATI(R) Radeon 9600 or higher.

How much RAM does Psychonauts need?

Psychonauts needs 256 MB of RAM at minimum, 512 MB of RAM recommended.

How big is Psychonauts?

Psychonauts requires 3.75 GB minimum hard drive space.

Does Psychonauts run on Mac or Steam Deck/Linux?

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