Raytracing, CPU utilization, FSR2

Processor usage

The game performs optimally on processors with six or more cores, with 6 to 8 cores providing the best results. It seems the Callisto Protocol isn't very CPU-demanding in terms of threads, however, it does like faster clocked CPUs.

The game is optimized for multi-core processors but utilizes very few threads. It doesn't put excessive strain on the CPU. 

Graphics memory (VRAM) usage

How much graphics memory does the game use in comparison to your display resolution with different graphics cards and VRAM sizes? So, have a look at the figure below, which compares the three primary tested resolutions, and the results listed in MBs. Graphics memory utilization in games can vary depending on the game setting, activities and scene. Once you begin to walk around in-game, this game will eat graphical memory; memory consumption is dynamic and can alter at any time. The greater the use, the denser and more complicated the scene (for example, entering a scene with a lot of buildings or plants). With your settings close to the maximum "Ultra," at Ultra HD this game strives to keep under the 8 GB mark with RT disabled but closes in at 9GB with Raytracing enabled.

We consider 8GB to be a reasonable starting point for any standard graphics card and a resolution up-to 2560x1440. For Ultra HD with raytracing enabled, 12GB is fine.

Image Quality settings - Raytracing performance takes a hefty toll 

To be sure, you have to look closely at times to discern the difference between Raytracing on and off. But, well, the game supports it. We gathered appropriate graphics cards to check how they performed across the three primary resolutions. And with any of the GPUs, resolutions of up to 2560x1440 are highly playable. Mind you, the results below are based on the Radeon RX 7900 XT.

What about FSR?

Surprisingly the game supports FSR2, and even more surprisingly, it's not offering much more performance.