PC requirements

Unreal Tournament 2004 System Requirements

Unreal Tournament 2004 needs at least Pentium III 1.0 GHz or AMD Athlon 1.0 GHz or faster (Pentium® or AMD 1.2GHz or greater recommended), 128MB RAM (256MB RAM or greater recommended) and 32 MB video card required (64 MB NVIDIA or ATI hardware T&L card recommended) graphics.

Verified Sources: Steam store listing
Unreal Tournament 2004 minimum and recommended PC specifications
Component Minimum
Processor Pentium III 1.0 GHz or AMD Athlon 1.0 GHz or faster (Pentium® or AMD 1.2GHz or greater recommended)
Memory 128MB RAM (256MB RAM or greater recommended)
Graphics 32 MB video card required (64 MB NVIDIA or ATI hardware T&L card recommended)
DirectX DirectX 9.0b
Storage 5.5 GB Free
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

Unreal Tournament 2004 is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Unreal Tournament 2004 on PC

Can my PC run Unreal Tournament 2004?
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 Unreal Tournament 2004 need?
5.5 GB Free