In order for you to play American Truck Simulator on Windows with minimal graphics settings, your computer must meet the following requirements
Operating System:
Windows 10 64-bit
Processor (CPU):
Intel Core i5-6400 or AMD Ryzen 3 1200 or similar
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA GeForce GTX 660 or AMD Radeon RX 460 or Intel HD 630 (2GB VRAM)
Storage:
25 GB available space
In order to play American Truck Simulator on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Windows 10 64-bit
Processor (CPU):
Intel Core i5-9600 or AMD Ryzen 5 3600 or similar
Memory (RAM):
12 GB RAM
Graphics Card:
NVIDIA GeForce GTX 1660 or AMD Radeon RX 590 (2GB VRAM)
Storage:
25 GB available space