Microsoft Flight Simulator

Microsoft Flight Simulator is a uniquely demanding title, and the benchmark data for the AMD Ryzen 9 9900X paired with the AMD Radeon RX 6800 XT reveals a system that is consistently capable across all tested resolutions and presets, though the balance of load shifts significantly as resolution changes. The measured results provide a clear picture of how this combination handles the simulator’s complex rendering workload, with the CPU’s strong single-threaded performance proving crucial at lower resolutions while the GPU’s substantial memory and bandwidth take over at 4K.

Resolution Scaling

The data shows a predictable but informative progression as resolution increases from 1920x1080 to 3840x2160. At the High preset, the average frame rate falls from 88.1 FPS at 1080p to 69.8 FPS at 1440p, and finally to 55.1 FPS at 4K. This represents a 37.5% drop from 1080p to 4K, indicating that the system is transitioning from a CPU-bound state at 1080p to a more GPU-intensive workload at higher pixel counts.

The scaling pattern becomes even more telling when examining the Low preset. Here, the system delivers 151.2 FPS at 1080p, 124.4 FPS at 1440p, and 88.2 FPS at 4K. The 63.0 FPS difference between 1080p and 4K at Low settings is the largest absolute drop in the entire dataset, which strongly suggests that the Ryzen 9 9900X is capable of feeding frames at a very high rate when graphical load is minimal, but the Radeon RX 6800 XT becomes the limiting factor as pixel count increases. The fact that 1080p Low nearly doubles the 4K High result (151.2 vs 55.1 FPS) underscores that this simulator is heavily dependent on both components, with the GPU’s rendering overhead dominating at higher resolutions.

Interestingly, the Medium preset shows a similar relative decline, going from 117.5 FPS at 1080p to 97.1 FPS at 1440p and 69.1 FPS at 4K. The 1440p to 4K drop at Medium is 28.0 FPS, which is proportionally larger than the 1080p to 1440p drop of 20.4 FPS. This non-linear scaling is a classic indicator that the GPU’s fill rate and memory bandwidth are being increasingly taxed as resolution rises. At 1080p, the CPU’s 12 cores and 24 threads, with a single-thread score of 1286 in 3DMark, are likely the primary driver, but by 4K, the RX 6800 XT’s 512.0 GB/s bandwidth and 16 GB of GDDR6 memory are working near their limits.

Settings Recommendations

For users prioritizing smooth gameplay at 4K, the data clearly points to the Medium preset as the optimal balance. The 4K Medium result of 69.1 FPS is 14.0 FPS higher than High (55.1 FPS) and 21.3 FPS higher than Ultra (47.8 FPS), while still delivering a visually richer experience than Low (88.2 FPS). The difference between Medium and High at 4K is substantial enough to justify the visual compromise, as the former maintains a frame rate that approaches the 60 FPS threshold, whereas the latter falls below it.

At 1440p, the High preset appears to be the sweet spot. The measured 69.8 FPS at High is only 0.9 FPS lower than the 4K Medium result, but it offers significantly better visual fidelity. The 1440p Ultra setting delivers 68.9 FPS, which is nearly identical to High (69.8 FPS), suggesting that the incremental gains from Ultra are minimal in this resolution range. Given that the 1440p Medium preset achieves 97.1 FPS, there is headroom for users to push toward High without sacrificing smoothness.

For 1080p users, the High preset at 88.1 FPS is a strong recommendation, but the Ultra preset also delivers 88.1 FPS, which is an unusual parity. This indicates that at 1080p, the CPU is the limiting factor, and increasing graphical settings from High to Ultra has no measurable impact on performance. The Low preset at 151.2 FPS is only useful for competitive play or extreme frame rate monitoring, as the visual downgrade is likely too severe for a simulation game that relies on situational awareness.

GPU Role

The Radeon RX 6800 XT plays a pivotal role in this system’s performance, particularly at higher resolutions. The GPU’s 16 GB of GDDR6 memory is a key asset for Microsoft Flight Simulator, which is known for streaming vast amounts of terrain and texture data. The 512.0 GB/s memory bandwidth ensures that this data can be fed to the GPU’s 4608 shading units without creating a bottleneck, as evidenced by the 4K Medium result of 69.1 FPS, which is respectable for a flight simulator.

The GPU’s clock behavior also factors into the results. With a base clock of 1825 MHz and a boost clock of 2250 MHz, the RX 6800 XT can dynamically adjust its frequency based on thermal and power headroom. The measured frame rates suggest that the GPU is able to sustain high clocks under load, as the 4K Ultra result of 47.8 FPS, while below 60 FPS, is still playable for a simulator genre that often tolerates lower frame rates. The GPU’s 72 ray accelerators are not directly tested in this dataset, but the Ultra preset’s performance drop of 7.3 FPS from High at 4K indicates that additional rendering features are being processed.

Comparing to its nearest rivals, the RX 6800 XT’s average benchmark score of 49982 places it just 0.5% above the Intel Arc A550M (49737) and 2.6% above the NVIDIA GeForce RTX 4070 Ti SUPER (48704). However, the RTX 4070 Ti SUPER’s lower score does not account for the specific demands of this game, where the RX 6800 XT’s larger memory pool likely provides a tangible advantage in texture streaming. The GPU’s 87th percentile ranking among all GPUs further confirms that it is a high-end part, but the data shows it is not the primary bottleneck until 4K.

FAQ

Q: What is the best resolution for this CPU/GPU combo in Microsoft Flight Simulator?

A: Based on the measured data, 2560x1440 at High settings offers the best combination of visual quality (69.8 FPS) and smoothness. At 4K, dropping to Medium (69.1 FPS) is necessary to maintain playable frame rates, while 1080p allows for Ultra settings (88.1 FPS) without any performance penalty.

Q: Is the Ryzen 9 9900X or the RX 6800 XT the limiting factor at 1080p?

A: The data strongly indicates the CPU is the limit at 1080p. At High and Ultra settings, the average FPS is identical at 88.1, and even at Low, the 151.2 FPS result suggests the GPU has significant headroom that is constrained by the CPU’s frame delivery.

Q: How does the RX 6800 XT compare to its nearest GPU rival in this game?

A: The RX 6800 XT has an average benchmark score of 49982, which is 2.6% higher than the NVIDIA GeForce RTX 4070 Ti SUPER (48704). While this is a synthetic comparison, the RX 6800 XT’s 16 GB memory is likely more beneficial for Flight Simulator’s large texture loads than the raw score difference suggests.

Q: Does moving from High to Ultra at 4K cause a significant performance hit?

A: Yes. The 4K High preset delivers 55.1 FPS, while Ultra drops to 47.8 FPS, a 7.3 FPS decrease. This 13.2% reduction may not be worth the visual gains, especially since Medium (69.1 FPS) is a much better compromise for 4K.

Q: What is the CPU’s percentile ranking and how does it affect gameplay?

A: The Ryzen 9 9900X ranks in the 94th percentile among all CPUs, with an average benchmark score of 54450. Its nearest rival, the AMD Ryzen 9 9900X3D, scores 54681, which is only 0.4% higher, indicating that the 9900X’s single-thread performance (6555 in Cinebench R23) is sufficient for this simulator’s physics and AI calculations.

Q: Is the 4K Ultra preset playable with this combo?

A: At 47.8 FPS, the 4K Ultra preset is technically playable but falls below the 60 FPS target. For a flight simulator where precision is important, the Medium preset at 69.1 FPS provides a much safer margin for smooth camera panning and cockpit interactions.

How This Combo Ranks

In the comprehensive database of tested combinations, this pairing of the AMD Ryzen 9 9900X and AMD Radeon RX 6800 XT holds the 610th position out of 1795 total combos. This places the system in the 66th percentile of all tested configurations, which is a solid result given that the GPU is now end-of-life and the CPU is from the 9000 series. The rank reflects that while this is not a top-tier, flagship configuration, it outperforms a majority of systems tested in this game.

The CPU’s contribution to this rank is significant. With a 94th percentile ranking among all CPUs and an average benchmark score of 54450, the Ryzen 9 9900X is a high-end processor that sits just 1.8% below the Intel Core Ultra 5 245KF (55421) and 1.5% below the Intel Core Ultra 5 245K (55304) in average score. This means the CPU is not a weak link in the system. The GPU, on the other hand, is in the 87th percentile, which is lower but still above average. The delta between the CPU and GPU percentiles (94 vs 87) suggests that the GPU is the more limiting component in this pairing, which aligns with the resolution scaling data showing the GPU becoming the bottleneck at 4K.

The rank of 610 also indicates that while many combos with newer, higher-end GPUs will outperform this system, the combination of a fast Zen 5 CPU and a large-memory RDNA 2 GPU remains competitive. The fact that the GPU’s nearest rival, the RTX 4070 Ti SUPER, has a lower average score (48704 vs 49982) suggests that users of this combo are not losing significant performance to more modern alternatives in this specific workload. Overall, the data portrays a well-balanced system that is slightly CPU-heavy in capability, making it a reliable choice for Microsoft Flight Simulator across all tested settings, with the caveat that 4K Ultra requires a tolerance for frame rates below 50 FPS.