Microsoft Flight Simulator

The AMD Ryzen 5 8400F and AMD Radeon RX 6600 XT pairing delivers playable, yet distinctly tiered, performance across resolution and quality presets in Microsoft Flight Simulator. The data reveals a system that is firmly GPU-bound at higher resolutions but begins to show CPU influence at 1080p, creating a composite picture of a balanced mid-range setup where the Ultra preset remains a challenge for smooth frame rates.

Resolution Scaling

The frame rate progression across resolutions demonstrates classic GPU-bound scaling, with the most dramatic drop occurring when moving from 1440p to 4K. At High settings, the average frame rate falls from 48.4 FPS at 2560x1440 to 31.3 FPS at 3840x2160, a reduction of 17.1 FPS that represents a 35% performance loss. This steep decline indicates that the RX 6600 XT’s 8 GB frame buffer and 256.0 GB/s memory bandwidth are being heavily taxed by the pixel count at 4K, with the GPU’s 10.60 TFLOPS of FP32 compute becoming the limiting factor. The 4K High result of 31.3 FPS is barely at the edge of playability, suggesting that this resolution is only viable with reduced settings.

Scaling from 1080p to 1440p is comparatively gentler. At High settings, the drop from 62.0 FPS to 48.4 FPS represents a 22% reduction, while the Low preset sees a smaller relative decline from 101.9 FPS to 83.2 FPS. This pattern holds for Medium, which falls from 76.0 FPS to 64.3 FPS. The fact that 1080p Low reaches 101.9 FPS while 4K Low manages only 59.7 FPS highlights how the pixel throughput requirement quadruples between these resolutions, overwhelming the GPU’s 64 ROPS and 165.7 GPixel/s pixel rate. The data strongly suggests that 1080p and 1440p are the intended operating range for this combo, with 4K requiring a compromise on visual quality to maintain acceptable frame rates.

GPU Role

The Radeon RX 6600 XT’s specifications directly explain the measured results. With a boost clock of 2589 MHz and a game clock of 2359 MHz, the GPU has sufficient headroom for lighter loads, yet its 8 GB of GDDR6 memory on a 128-bit bus proves to be a constraint at higher resolutions. The 256.0 GB/s bandwidth is adequate for 1080p and 1440p, where the measured 1080p Ultra average of 55.5 FPS and 1440p Ultra average of 47.7 FPS indicate the card is working near its designed capacity. However, at 4K, the bandwidth becomes a bottleneck, with the 4K Ultra average of 32.9 FPS barely surpassing the 30 FPS threshold, while the 4K High result of 31.3 FPS shows little improvement despite lower settings.

The GPU’s performance percentile of 71 versus all GPUs places it in the upper-midrange, and its nearest rivals include the NVIDIA GeForce GTX 980 Ti, which it edges out by 0.1% in average benchmark score. The RX 6600 XT’s 2048 shading units and 32 RT cores provide the architectural foundation for DirectX 12 Ultimate, which Microsoft Flight Simulator utilizes, but the 4K results confirm that raw compute is insufficient for this simulator’s demanding scenery rendering. The gap between 4K Low at 59.7 FPS and 4K Medium at 45.3 FPS demonstrates that each settings tier adds substantial GPU workload, with the jump from Low to Medium costing 14.4 FPS at 4K. This behavior points to the GPU’s texture fill rate of 331.4 GTexel/s being the primary limiter, as higher presets increase texture detail and anisotropic filtering demands.

CPU Role

The AMD Ryzen 5 8400F provides a solid foundation for this GPU, though its role becomes more apparent at lower resolutions where the GPU has spare capacity. With 6 cores and 12 threads based on Zen 4 architecture, the CPU’s single-thread performance is strong, evidenced by its Cinebench R23 single-core score of 2943 and 3DMark single-thread score of 951. These figures are critical for Microsoft Flight Simulator, which relies heavily on single-threaded simulation logic. The CPU’s boost clock of 4.70 GHz ensures that the main simulation thread has sufficient speed to feed the GPU at 1080p, where the measured 1080p Low average of 101.9 FPS indicates the CPU can push well beyond 100 FPS when the GPU is not the bottleneck.

The CPU’s multi-threaded capabilities, with a Cinebench R23 multi-core score of 20851 and PassMark multithread score of 24530, allow it to handle background tasks like terrain loading and AI traffic without substantially interfering with frame pacing. However, the CPU’s 16 MB of shared L3 cache is modest, and its 83.2 GB/s memory bandwidth with DDR5 support is adequate but not exceptional. The 8400F’s nearest rival in benchmark scores is the AMD Ryzen 7 2700X, which it matches at 0% delta, and the AMD Ryzen 5 7500F, which it leads by 0.3%. This indicates that the 8400F sits comfortably in the mid-range CPU tier, and its percentile rank of 82 versus all CPUs confirms it is well above average. The data shows that at 1080p Ultra, the 55.5 FPS result is close to the 1440p Ultra result of 47.7 FPS, suggesting that the CPU is not the primary limiter at either resolution, but rather the GPU’s rendering load dominates.

Settings Recommendations

The measured frame rates across presets provide clear guidance for optimizing the experience. At 1920x1080, the Low preset delivers 101.9 FPS, which is far beyond what Microsoft Flight Simulator requires for smooth gameplay, while the Medium preset at 76.0 FPS offers a better balance of visual fidelity and performance. The High preset at 62.0 FPS is still very smooth, and even Ultra at 55.5 FPS remains playable, making 1080p the only resolution where all presets are viable options. The data suggests that for 1080p users, the High preset is the sweet spot, as it provides 62.0 FPS while maintaining higher detail levels than Medium, without the performance penalty of Ultra.

At 2560x1440, the Low preset’s 83.2 FPS is excellent, but Medium at 64.3 FPS is the recommended choice for most users, as it delivers fluid performance while retaining moderate detail. The High preset at 48.4 FPS is borderline, and Ultra at 47.7 FPS offers no meaningful advantage over High, indicating that the Ultra preset’s additional overhead does not translate into a better experience on this hardware. For 3840x2160, the Low preset at 59.7 FPS is the only truly smooth option, with Medium at 45.3 FPS being acceptable but not ideal, and both High and Ultra falling below 40 FPS. The data strongly recommends 4K users stick with Low or Medium settings, as the jump to High yields only a marginal visual improvement while costing 14.0 FPS compared to Medium.

How This Combo Ranks

Within the benchmark database, this combination of AMD Ryzen 5 8400F and AMD Radeon RX 6600 XT ranks 1222 out of 1795 tested combos in Microsoft Flight Simulator. This places it in the lower third of all possible pairings, which is consistent with the measured frame rates that show playable but not exceptional performance. The ranking reflects the GPU’s mid-range positioning, as the RX 6600 XT’s percentile of 71 versus all GPUs is respectable, but the combination lacks the high-end horsepower needed to rank higher in a simulator that is particularly demanding on both CPU and GPU resources. The combo’s rank of 1222 means that approximately 573 other combinations deliver higher average frame rates, which is expected given that the RX 6600 XT sits near the GTX 980 Ti in performance, a card from an older generation.

The CPU’s contribution to this ranking is positive, as the 8400F’s percentile of 82 versus all CPUs is notably higher than the GPU’s percentile, suggesting the processor has headroom that the GPU cannot fully utilize at higher resolutions. This asymmetry is evident in the data: at 1080p Low, the combo achieves 101.9 FPS, which is 71% higher than the 4K Low result of 59.7 FPS, indicating that the GPU is the constraining component when resolution increases. The combo’s overall ranking would likely improve if paired with a stronger GPU, but the current pairing represents a reasonable balance for 1080p and 1440p gaming, as the measured results show consistent performance across the mid-range presets.

Measured FPS Breakdown

At 1920x1080, the full range of settings is playable. The Low preset achieves an average of 101.9 FPS, Medium reaches 76.0 FPS, High delivers 62.0 FPS, and Ultra bottoms out at 55.5 FPS. The progression from Low to Ultra shows a total drop of 46.4 FPS, with the largest single-step decline occurring from Low to Medium at 25.9 FPS. This indicates that the Medium preset introduces significantly more GPU workload, while the steps from Medium to High and High to Ultra are smaller, at 14.0 FPS and 6.5 FPS respectively.

At 2560x1440, the frame rates are substantially lower but remain usable. Low produces 83.2 FPS, Medium drops to 64.3 FPS, High falls to 48.4 FPS, and Ultra reaches 47.7 FPS. The drop from Medium to High is 15.9 FPS, which is the largest step at this resolution, while High to Ultra only costs 0.7 FPS, making Ultra essentially equivalent to High in performance terms. At 3840x2160, the results show a clear hierarchy: Low at 59.7 FPS, Medium at 45.3 FPS, High at 31.3 FPS, and Ultra at 32.9 FPS. Interestingly, the Ultra preset scores 1.6 FPS higher than High at 4K, which is within measurement variance and suggests that the Ultra preset does not always impose a linear penalty. The 4K data reveals that the gap between Low and Medium is 14.4 FPS, while the gap between Medium and High is 14.0 FPS, showing that each settings tier taxes the GPU similarly at this resolution. The 4K results overall confirm that this combo is best suited for 1080p and 1440p, where the measured numbers indicate a comfortable margin above playability thresholds.