Fractal flames require lengthy renders because of the nature of the algorithm. It is both computationally intensive, and memory cache inefficient. This holds true for running on both the CPU and GPU.
Many benchmarking tools focus on either computation or memory bandwidth. Few do both, and even less measure memory latency. An algorithm that heavily stresses computation and memory latency makes for a good real-world benchmark.
This is accomplished by running the EmberBench.ps1 Powershell script in the Bench subfolder of the installation directory on Windows.
It is the aim of this project to get fractal flames rendering more accepted in mainstream benchmarking.