In order for you to play Portal with RTX on Windows with minimal graphics settings, your computer must meet the following requirements
OS: 64-bit Windows 10 / Windows 11
Processor: Intel i7-6700, AMD Ryzen 5 3600
Memory: 16 GB RAM
Graphics: NVIDIA GeForce RTX 3060
Storage: 25 GB available space
RECOMMENDED:
OS: 64-bit Windows 10 / Windows 11
Processor: Intel i7-6700, AMD Ryzen 5 3600
Memory: 16 GB RAM
Graphics: NVIDIA GeForce RTX 3080
Storage: 25 GB SSD available space
In order to play Portal with RTX on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS: 64-bit Windows 10 / Windows 11
Processor: Intel i7-12700K, AMD Ryzen 9 5900
Memory: 32 GB RAM
Graphics: NVIDIA GeForce RTX 4080
Storage: 25 GB SSD available space