PC requirements

Assassin's Creed Revelations System Requirements

Assassin's Creed Revelations needs at least Intel® Core™2 Duo E4400 @ 2.0 GHz or AMD Athlon™ 64 X2 4000+ @ 2.1GHz, 1.5 GB Windows® XP / 2 GB Windows Vista, 7 of RAM and 256 MB DirectX® 9.0–compliant card with Shader Model 4.0 or higher (see supported list)* graphics. For the recommended experience you want Intel® Core™2 Duo E6700 @ 2.6 GHz or AMD Athlon™ 64 X2 6000+ @ 3.0 GHz or better, 2 GB Windows® XP / Windows Vista® / Windows® 7 of RAM and 512 MB DirectX® 9.0–compliant card with Shader Model 5.0 or higher (see supported list)* graphics.

Verified Sources: Steam store listing
Assassin's Creed Revelations minimum and recommended PC specifications
Component Minimum Recommended
Operating system Windows® XP SP3 / Windows Vista® SP2 Windows® XP SP3 / Windows Vista® SP2
Processor Intel® Core™2 Duo E4400 @ 2.0 GHz or AMD Athlon™ 64 X2 4000+ @ 2.1GHz Intel® Core™2 Duo E6700 @ 2.6 GHz or AMD Athlon™ 64 X2 6000+ @ 3.0 GHz or better
Memory 1.5 GB Windows® XP / 2 GB Windows Vista, 7 2 GB Windows® XP / Windows Vista® / Windows® 7
Graphics 256 MB DirectX® 9.0–compliant card with Shader Model 4.0 or higher (see supported list)* 512 MB DirectX® 9.0–compliant card with Shader Model 5.0 or higher (see supported list)*
Storage 12 GB 12 GB
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Other platforms

Assassin's Creed Revelations is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Assassin's Creed Revelations on PC

Can my PC run Assassin's Creed Revelations?
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 Assassin's Creed Revelations need?
12 GB
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.