Here are the Pet Shop Simulator: Prologue System Requirements (Minimum)
CPU: Intel Core i3 3.0 GHz
RAM: 8 GB
VIDEO CARD: NVidia GeForce GTX 780
DEDICATED VIDEO RAM: 3072 MB
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 7 64 Bit / Windows 8 64 Bit / Windows 10 64 Bit
FREE DISK SPACE: 6 GB
Pet Shop Simulator: Prologue Recommended Requirements
CPU: Intel Core i5 3.4 GHz
RAM: 10 GB
VIDEO CARD: NVidia GeForce GTX 970
DEDICATED VIDEO RAM: 4096 MB
PIXEL SHADER: 6.0
VERTEX SHADER: 6.0
OS: Windows 7 64 Bit / Windows 8 64 Bit / Windows 10 64 Bit
FREE DISK SPACE: 8 GB