In order to play Assassin's Creed 2 properly, your PC MUST meet or exceed these system requirements:

Supported OS: Windows XP (SP3) / Windows Vista (SP2) / Windows 7
Processor: 1.8 GHz Intel Core2 Duo or 2.4 GHz AMD Athlon 64 X2 (2.6 GHz Intel Core 2 Duo E6700 or AMD Athlon 64 X2 6000+ or higher recommended)
RAM: 1.5 GB Windows XP / 2 GB Windows Vista, Windows 7 (2 GB / 4 GB recommended)
Video Card: 256 MB DirectX 9.0c–compliant card with Shader Model 3.0 or higher (512 MB recommended) (see supported list*)
Sound Card: DirectX 9.0c–compliant sound card (5.1 sound card recommended)
DirectX Version: DirectX 9.0c
DVD-ROM: Dual-layer DVD-ROM drive
Hard Drive Space: 8 GB
Peripherals Supported: Windows-compliant keyboard, mouse, optional controller (Xbox 360 Controller for Windows recommended)
Internet Connection: Broadband Internet connection with 128 kbps or faster

*Supported Video Cards at Time of Release:
NVIDIA GeForce 7 / 8 / 9 / 100 / 200 / GTX series
ATI RADEON X1950 / HD 2000 / HD 3000 / HD 4000 / HD 5000 series
Laptop versions of these cards may work but are NOT supported. These chipsets are the only ones that will run this game.

AN INTERNET CONNECTION AND CREATION OF A UBISOFT ACCOUNT ARE REQUIRED TO PLAY THIS GAME. YOU MUST BE AT LEAST 13 TO CREATE A UBISOFT ACCOUNT WITHOUT PARENTAL CONSENT. UBISOFT MAY CANCEL ACCESS TO ONLINE FEATURES UPON A 30-DAY PRIOR NOTICE PUBLISHED AT http://www.assassinscreed.com