Frametime Analysis

We present a more in-depth analysis than just average FPS to show how the framerate changes over time, which helps highlight FPS drops. Minimum FPS at both the 95th and 99th percentile are reported in these charts, too. A second chart, a histogram, shows shape and spread for the frametime data—how tightly grouped the measurements are. The "IQR" result is called "Interquartile Range," which is an outlier-resistant statistical value that tells us the range in the middle of the frametime distribution.




Switching over to Doom Eternal, things change a bit. Because id Tech 7 is a highly optimized game engine, even computers with weaker processors and mid-range graphics cards can have enormous frame-rates. Here, however, we are using a top-end CPU and graphics cards, which also illustrates that memory latency does matter for AMD CPUs. While high graphical settings often does put more work onto the GPU, faster memory in timings and or frequency can provide higher 1% lows since the game isn't quite GPU bound yet.




By raising the resolution to 4K, the gap shrinks and causes both memory kits to be on equal footing. This is because the game is completely GPU-bound, leaving the graphics card last to finish each frame calculation.