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 to Forza Horizon 5, the same story plays out. Once again by using the low graphical settings, it helps to illustrate how sensitive AMD is to memory frequency and overall timings, as they can affect the average frame-rate and the 1% lows. We can see this XPG Lancer Blade kit greatly outperform the budget friendly 48 GB memory kit.




As we raise the graphical settings, the gap between the two kits shrinks as more calculation time for each frame is spent on the graphics card instead. The average frame rate gap shrinks, but there is still a noticeable gap between the two when looking at the 95th and 99th percentiles in this graph.




Raising the game's resolution to 4K means Forza Horizon 5 becomes completely GPU bound, leaving the CPU often waiting on the graphics card to finish each calculation. With a margin of error of 3%, these two memory kits are nearly indistinguishable at this resolution using an RTX 4090 going by the average frame rate.