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.




Moving on to Forza Horizon 5, similar to Cyberpunk 2077, the low graphical settings helped to illustrate how sensitive AMD is to memory frequency and overall timings, as they can affect the average frame-rate and the 1% lows. Here, because the 7200 MT/s memory kit is operating in a 2:1 Ratio memory configuration, it is actually worse, even though the raw bandwidth is higher.




By increasing just the graphical settings, the same scenario plays out in each game. the gap between the two kits shrinks as more calculation time for each frame is spent on the graphics card instead.




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. Though, the 1% Lows are lagging behind.