The Bottleneck calculator tools are a simple way to check the relationship between the processor and the graphics card inside your computer that gives results in a fraction of seconds.
Sometimes the CPU will be more powerful than the GPU comparatively, and sometimes it will be the other way around.
Having a CPU more powerful than your GPU could create a large bottleneck percentage. However, it will actually provide you with an advantageous situation in which the processor is able to handle the load from the graphics card. It will also continue to have the processing power to spare for any background applications you have running in real-time.
Having a GPU more powerful than your CPU may not be as much of a problem as you might feel, but the CPU will have to work harder and may not be able to deliver the best performance because it will not have the ability to appropriately handle the demands of the GPU.
Online tools offer the ability to check how a CPU and GPU will work together, and the bottleneck test will output an expected bottleneck percentage. This can be illuminating if you know you have good equipment, but don’t know how it works together.
Some CPU/GPU pairings run through the PC builds bottleneck tester and their relative percentages, where anything over 10% is considered a bottleneck: All of these bottleneck calculations were made with 8 GB of memory as a constant.