Ubisoft released the system requirements for Assassin's Creed: Unity

Ubisoft has released the minimum and recommended system requirements for Assassin's Creed: Unity, which was released on will take place on 11 November.

minimum:

     Windows 7 SP1, Windows 8 / 8.1 (64-bit);
     Intel Core i5-2500K 3.3 GHz or AMD FX-8350 4.0 GHz;
     6 GB of RAM;
     NVIDIA GeForce GTX 680 or AMD Radeon HD 7970 (2 GB VRAM);
     50 GB of hard disk space;
     DirectX 9.0c compatible sound card.

Recommended:

     Windows 7 SP1, Windows 8 / 8.1 (64-bit)
     Intel Core i7-3770 3.4 GHz / AMD FX-8350 4.0 GHz or better;
     8 GB of RAM;
     NVIDIA GeForce GTX 780 or AMD Radeon R9 290X (3 GB VRAM);
     50 GB of hard disk space;
     DirectX 9.0c compatible sound card.

For more information. At the time of the release will be supported by the following video cards: NVIDIA GeForce GTX 680 or better, GeForce GTX 700 series, AMD Radeon HD7970 or better, Radeon R9 200 series.