PC requirements

Killing Floor System Requirements

Killing Floor needs at least 1.2 GHZ or Equivalent, 1 GB RAM and 64 MB DX9 Compliant graphics. For the recommended experience you want 2.4 GHZ or Equivalent, 2 GB RAM and 128 MB DX9 Compliant with PS 2.0 support graphics.

Verified Sources: Steam store listing
Killing Floor minimum and recommended PC specifications
Component Minimum Recommended
Operating system Windows XP/Vista Windows XP/Vista
Processor 1.2 GHZ or Equivalent 2.4 GHZ or Equivalent
Memory 1 GB RAM 2 GB RAM
Graphics 64 MB DX9 Compliant 128 MB DX9 Compliant with PS 2.0 support
Storage 2 GB free hard drive space 2 GB 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

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

Quick answers

Running Killing Floor on PC

Can my PC run Killing Floor?
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 Killing Floor need?
2 GB free hard drive space
What is the difference between minimum and recommended specs?
Minimum means the game starts and is playable, usually at 30fps on low settings at 1080p. Recommended is the developer's target for a smooth 60fps experience at high settings.