Here are the PC specs from Epic Games:
Requirements (Minimum)
CPU: Intel Core i5-6400 or AMD FX-8320
RAM: 8 GB.
OS: Windows 10 (64-Bit versions)
VIDEO CARD: Nvidia GTX 960 or AMD R9 280x
PIXEL SHADER: 5.1
VERTEX SHADER: 5.1
SOUND CARD: Coming Soon
DEDICATED VIDEO RAM: 2048 MB
Recommended Requirements
CPU: Intel Core i7-5930K or AMD Ryzen 5 1600X
RAM: 16GB.
OS: Windows 10 (64-Bit versions)
VIDEO CARD: Nvidia GTX 1660 or AMD R9 Fury X
PIXEL SHADER: 5.1
VERTEX SHADER: 5.1
SOUND CARD: TBD
DEDICATED VIDEO RAM: 4096 MB
Only 18GB of Hard Drive space. Seems pretty much the same as the demo if this is correct.