Here are the Gigantic: Rampage Edition System Requirements (Minimum)
CPU: Intel Core i3-4160 (2 * 3600) or equivalent/AMD Athlon X4 860K (4 * 3700) or equivalent
RAM: 8 GB
VIDEO CARD: GeForce GT 640 (2048 MB) / Radeon HD 7750 (1024 MB)
DEDICATED VIDEO RAM: 2 GB (AMD 1GB)
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 10 x64
FREE DISK SPACE: 15 GB
Gigantic: Rampage Edition Recommended Requirements
CPU: Intel Core i7-10700 (8 * 2900) or equivalent/AMD Ryzen 7 2700X (8 * 3700) or equivalent
RAM: 16 GB
VIDEO CARD: GeForce RTX 2070 Super (8192 MB)/Radeon RX 5700 XT (8192 MB)
DEDICATED VIDEO RAM: 8192 MB
PIXEL SHADER: 6.0
VERTEX SHADER: 6.0
OS: Windows 10 x64
FREE DISK SPACE: 15 GB