Work out game frame rate requirement instantly with clear inputs, formula shown and shareable results.
Frame rate is 1000 divided by the longer of the CPU and GPU frame times, and the frame budget is 1000 divided by the refresh rate you are trying to hit. Because the pipeline runs at the pace of its slowest stage, upgrading the component that is not the bottleneck changes nothing at all.
Frame rate
fps = 1000 / max(CPU frame time, GPU frame time) in milliseconds
Frame budget
budget ms = 1000 / target refresh rate
fps = 1000 / max(CPU frame time, GPU frame time) in milliseconds. Frame rate is 1000 divided by the longer of the CPU and GPU frame times, and the frame budget is 1000 divided by the refresh rate you are trying to hit.
Because the pipeline runs at the pace of its slowest stage, upgrading the component that is not the bottleneck changes nothing at all.
Enter monitor refresh rate, gpu frame time, cpu frame time. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.