PC requirements

Empire: Total War System Requirements

Empire: Total War needs at least 2.4 GHz Intel® Pentium® or greater or AMD® Athlon® equivalent CPU, 1 GB RAM (XP,) 2 GB RAM (Vista™) and 100% DirectX 9.0c compatible hardware accelerated video card with shader version 2.0 support, 256 MB video memory graphics.

Verified Sources: Steam store listing
Empire: Total War minimum and recommended PC specifications
Component Minimum
Processor 2.4 GHz Intel® Pentium® or greater or AMD® Athlon® equivalent CPU
Memory 1 GB RAM (XP,) 2 GB RAM (Vista™)
Graphics 100% DirectX 9.0c compatible hardware accelerated video card with shader version 2.0 support, 256 MB video memory
Storage 15 GB free hard disk space formatted as NTFS
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

Empire: Total War is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Empire: Total War on PC

Can my PC run Empire: Total War?
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 Empire: Total War need?
15 GB free hard disk space formatted as NTFS