Here are the Assassin’s Creed Syndicate System Requirements (Minimum)
CPU: Intel Core i5 2400s @ 2.5 GHz or AMD FX 6350 @ 3.9 GHz
CPU SPEED: Info
RAM: 6 GB
VIDEO CARD: NVIDIA GeForce GTX 660 or AMD Radeon R9 270 (2GB VRAM with Shader Model 5.0)
DEDICATED VIDEO RAM: 2 GB
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 7 SP1, Windows 8.1, Windows 10(64bit versions)
FREE DISK SPACE: 50 GB
SOUND CARD: Yes

Assassin’s Creed Syndicate Recommended Requirements
CPU: Intel Core i7-3770 @ 3.5 GHz or AMD FX-8350 @ 4.0 GHz
CPU SPEED: Info
RAM: 8 GB
VIDEO CARD: NVIDIA GeForce GTX 760 (4GB) or the newer GTX 970 (4GB) or AMD Radeon R9 280X (3GB) or better
DEDICATED VIDEO RAM: 4 GB (AMD 3 GB)
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 7 SP1, Windows 8.1, Windows 10(64bit versions)
FREE DISK SPACE: 50 GB
SOUND CARD: Yes