With the introduction of the NVIDIA GeForce RTX series of graphics cards in 2018, NVIDIA has introduced real Ray-tracing graphics and light processing technology to computer gaming enthusiasts that show more realistic in-game graphics and light processing.
On April 11, the RT Overdrive mode will be introduced on the PC version of Cyberpunk 2077, which will change the way computer games can be processed, and will show graphics with much more realistic lighting than before.
The difference between existing Ray-tracing processing and also RT Overdrive is that with the first technique, it uses a combination of traditional raster processing with ray-tracing lighting processing to show better lighting, image reflections and graphics processing than using raster techniques alone.
With RT Overdrive, graphics processing is done entirely using Ray-tracing calculations, which in short will provide the user with much more realistic graphics and lighting than using regular Ray-tracing. This is due to the lighting processing of all the scenes shown using full Ray-tracing.
An example given is that with the game Battlefield V, at 4K resolution, each pixel in a game scene requires 39 ray calculations, and with RT Overdrive, 635 ray calculations are required for each pixel.
Through the video shown, this is why running Cyberpunk 2077 at 4K resolution with RT Overdrive mode installed will cause the game's frame rate to drop to 20FPS even with an NVIDIA GeForce RTX 4090 graphics card. With this, it is seen that DLSS 3.0 will be required to boost it again frame rate to a level past 100FPS.
At the moment, the specific specifications to take advantage of this RT Overdrive mode are not yet known, but due to the requirement for the DLSS 3.0 feature to play this game at high frame rates, it will not be surprising if you need an NVIDIA GeForce RTX 3000 and GeForce RTX 4000 graphics card to take advantage of it.