To get an idea of the graphical differences in Project CARS, here is a video that parallels a race with the visual details pushed to the maximum, facing the same route with lowered options to a minimum. Differences were noted.
Still in development within the company Slightly Mad Studios, Project CARS promises to be a rather complete car simulation. Besides its grip, the title features a graphic design of exquisite, but it is clear that it will have a powerful configuration to enjoy it on PC.
To find the visual differences between the game with the details and pushed ultra low configuration, here's a video that compares the same race to Mount Panorama (Bathurst) with Aston Martin Vantage GT4.
The differences are found rather obvious, especially in weather conditions virtually absent from the "low" version, be it rain or sun glare.
Recall that the release of the final version of Project CARS has recently been extended to April 2, 2015 on PC, Xbox One and PS4. The game will be released later on Wii U and Steam OS.