This Seeking Tech article compares the remakes of Resident Evil 2 and 3 running on the base PS5 and PS5 Pro.
You can find the videos below:
Both of these games aren’t officially enhanced for the PS5 Pro but they do take advantage of the boost mode of the system. As a result, they are able to run at a much smoother frame rate, especially with ray-tracing enabled.
The resolution remains the same on the PS5 and PS5 Pro.