Watch Dogs - System Requirments

Watch Dogs system requirements confirmed, wants a 64-bit system with significant oomph
 
Minimum:
OS: Windows Vista (SP2), Windows 7 (SP1) or Windows 8 (Please note that we only support 64 bit OSs.)
Processor: Intel Core 2 Quad Q8400 @ 2.66Ghz or AMD Phenom II X4 940 @ 3.0Ghz
Memory: 6 GB RAM
Graphics: DirectX 11 graphics card with 1 GB Video RAM - Nvidia Geforce GTX 460 or AMD Radeon HD 5770
DirectX: Version 11
Hard Drive: 25 GB available space
Sound Card: DirectX 9.0c Compatible Sound Card with Latest Drivers

Recommended:
OS: Windows Vista (SP2), Windows 7 (SP1) or Windows 8 (Please note that we only support 64 bit OSs.)
Processor: Eight core - Intel Core i7-3770 @3.5 GHz or AMD FX-8350 X8 @ 4 GHz
Memory: 8 GB RAM
Graphics: DirectX 11 graphics card with 2 GB Video RAM - Nvidia Geforce GTX 560 ti or AMD Radeon HD 7850
DirectX: Version 11
Hard Drive: 25 GB available space
Sound Card: DirectX 9.0c Compatible Sound Card with Latest Drivers

Reasonably high then—enough to be out of some people's gaming ability. That said, it mostly seems high due to an unseasonably long last-gen console cycle, where a 4 GB RAM requirement became the barrier that must not be breached. It is perhaps time that things moved on.
Read More at: Official Website.