Shenmue III is still a long way from completion, but developer Ys Net have just revealed the PC System Requirements and Minimum Specs for the game in an email to backers.
The email mostly concentrates on backer surveys, which are just going out, and so to help backers choose between PC and PS4 versions of Shenmue 3 the developers have released the tentative PC specs for the game - although they do note that they could change between now and release. You can see them below.
Shenmue III PC System Requirements
Seems quite low, but perhaps the biggest surprise there is the 100 GB hard drive space requirement. You can read the full backer post with the requirements right here.