PC requirements

Warhammer 40,000: Space Marine System Requirements

Warhammer 40,000: Space Marine needs at least 2.0Ghz Dual core CPU (any Core 2 Duo or AMD X2 or better), 1GB (XP), 2GB (Vista), 2GB (Windows 7) of RAM and 256MB Video Card using Shader Model 3 (Nvidia GeForce 8800GT, AMD Radeon 3850 and above) graphics. For the recommended experience you want Any Quad-core Intel or AMD Processor, 1GB (XP), 2GB (Vista), 2GB (Windows 7) of RAM and 512MB Video Card using Shader Model 3 (Performance equivalent to an AMD Radeon 5750 or better) graphics.

Verified Sources: Steam store listing
Warhammer 40,000: Space Marine minimum and recommended PC specifications
Component Minimum Recommended
Operating system Windows XP SP3, Windows Vista SP1, Windows 7 Windows 7
Processor 2.0Ghz Dual core CPU (any Core 2 Duo or AMD X2 or better) Any Quad-core Intel or AMD Processor
Memory 1GB (XP), 2GB (Vista), 2GB (Windows 7) 1GB (XP), 2GB (Vista), 2GB (Windows 7)
Graphics 256MB Video Card using Shader Model 3 (Nvidia GeForce 8800GT, AMD Radeon 3850 and above) 512MB Video Card using Shader Model 3 (Performance equivalent to an AMD Radeon 5750 or better)
Storage 20 GB space free (10 GB free after install) 20 GB space free (10 GB free after install)
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

Warhammer 40,000: Space Marine is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Warhammer 40,000: Space Marine on PC

Can my PC run Warhammer 40,000: Space Marine?
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 Warhammer 40,000: Space Marine need?
20 GB space free (10 GB free after install)
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.