Here are the Vellum System Requirements (Minimum)
CPU: Intel Core i5-6400 / AMD FX-8320
RAM: 4 GB
VIDEO CARD: GeForce GTX 960 / Radeon R9 280
DEDICATED VIDEO RAM: 2048 MB
PIXEL SHADER: 5.1
VERTEX SHADER: 5.1
OS: Windows 10
FREE DISK SPACE: 4 GB
Vellum Recommended Requirements
CPU: Intel Core i5-7500 / AMD Ryzen 5 1400
RAM: 8 GB
VIDEO CARD: GeForce GTX 1060 / Radeon R9 390
DEDICATED VIDEO RAM: 3072 MB
PIXEL SHADER: 6.0
VERTEX SHADER: 6.0
OS: Windows 10
FREE DISK SPACE: 4 GB