Earlier today we wrote about the system specs for the PC version of Assassin's Creed IV: Black Flag and it seems Ubisoft are celebrating "System Spec Day" as we're also reached by the Watch Dogs requirements. As you can see they are kind of hefty, and you'll also need a 64-bit Windows to run it.
Minimum:
GPU: DirectX 11 graphics card with 1 GB Video RAM
CPU: Quad core
RAM: 4GB
example 1
GPU: NVidia GTX 460
CPU: Intel Core2 Quad Q6600
example 2
GPU: AMD Radeon HD 5770
CPU: AMD Phenom X4 9750
Recommended:
GPU: DirectX 11 graphics card with 2 GB Video RAM
CPU: Eight core
RAM: 8GB
example 1
GPU: NVidia GTX 560 ti
CPU: Intel Core i7-3770
example 2
GPU: AMD Radeon HD 7850
CPU: AMD FX-8350 Eight-Core
Ultra:
GPU: Latest DirectX 11 graphics card with 2 GB Video RAM or more
CPU: Latest Eight core or more
RAM: 8GB or more
example 1
GPU: Nvidia GTX 670
CPU: Intel Core i7-3930K
example 2
GPU: AMD Radeon HD 7970
CPU: AMD FX-9370 Eight-Core