PC requirements

Armed and Dangerous System Requirements

Armed and Dangerous needs at least Pentium III 1GHz or AMD Athlon 1GHz, 256 RAM and 32 MB 3D graphics card with Hardware Transform and Lighting (T&L) Compatibility graphics.

Verified Sources: Steam store listing
Armed and Dangerous minimum and recommended PC specifications
Component Minimum
Operating system Windows 2000, XP or Vista
Processor Pentium III 1GHz or AMD Athlon 1GHz
Memory 256 RAM
Graphics 32 MB 3D graphics card with Hardware Transform and Lighting (T&L) Compatibility
Storage 4.5 GB of free hard drive space
Not sure how your PC compares? Use the Can I Run It checker — pick your CPU and GPU and it tells you which column you land in.

Other platforms

Armed and Dangerous is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Armed and Dangerous on PC

Can my PC run Armed and Dangerous?
Compare your CPU, GPU and RAM against the minimum column below. If your parts match or beat every minimum row, the game will launch — though you may need to lower settings. Matching the recommended column is what gets you 60fps at 1080p.
How much storage does Armed and Dangerous need?
4.5 GB of free hard drive space