Microsoft Flight Simulator

The AMD Ryzen 9 5900X paired with the AMD Radeon RX 6750 XT delivers a playable but resolution-sensitive experience in Microsoft Flight Simulator. The measured data shows a clear hierarchy across settings and resolutions, with the combination positioned in the 47th percentile of all tested combos for this title. The 12-core processor and 12 GB graphics card produce a balanced platform that scales predictably, though the demands of the flight simulator become evident at higher graphical presets.

Resolution Scaling

The frame rate drop from 1080p to 4K is substantial and reveals where the bottleneck lies. At High settings, the average FPS falls from 77 at 1920x1080 to 60 at 2560x1440, then to 44.3 at 3840x2160. That represents a 22% reduction moving from 1080p to 1440p, and a further 26% drop when stepping up to 4K. The scaling pattern indicates the GPU becomes the primary limiting component as pixel count rises.

Low settings show a similar trend with higher absolute numbers. The combo achieves 126.4 FPS at 1080p, drops to 103.2 at 1440p, and reaches 74.4 at 4K. The percentage deltas are 18% and 28% respectively, suggesting that even at Low settings, the graphics card is increasingly stressed at higher resolutions. The gap between 1080p and 4K at Low settings is 52 FPS, which is a significant margin that points to rendering resolution being the dominant factor.

The Medium preset tells a more moderate story. From 97.5 FPS at 1080p, the average falls to 80.5 at 1440p and 58.6 at 4K. This represents a 17% and 27% decline respectively. The near-consistent percentage drops across settings indicate a well-balanced system where neither CPU nor GPU wildly outstrips the other. However, the absolute losses at 4K across all presets — 52 FPS for Low, 38.9 for Medium, 32.7 for High, and 29 for Ultra — confirm that the Radeon RX 6750 XT's 192-bit memory bus and 432.0 GB/s bandwidth struggle to feed the renderer at 3840x2160.

CPU Role

The Ryzen 9 5900X brings 12 cores and 24 threads based on the Zen 3 architecture, running at a base clock of 3.70 GHz with a boost up to 4.80 GHz. In Microsoft Flight Simulator, the data suggests these resources are more than sufficient. The 3dmark single-thread score of 941 and the 2-thread score of 1852 indicate strong per-core performance, which matters for a simulator that typically relies on a primary simulation thread.

The CPU's 64 MB of L3 cache and dual-channel DDR4 memory support at 51.2 GB/s provide ample bandwidth for the game's streaming terrain and aircraft systems. The 3dmark 8-thread score of 6601 and 16-thread score of 9075 show that the processor scales well with increased thread counts, and the max-thread result of 10075 suggests headroom even when the simulator spawns background tasks. The Cinebench R23 multicore score of 33150 and single-core score of 4680 place this CPU in the 90th percentile versus all processors, reinforcing that it is not the limiting factor in this combo.

Evidence for the CPU's adequacy comes from the resolution scaling itself. If the processor were the bottleneck, frame rates would remain flat as resolution increases. Instead, the data shows a consistent decline from 1080p to 4K across every preset, which is the signature of a GPU-bound scenario. The 5900X's nearest rivals — the AMD EPYC 4245P with a 0.2% delta and the Intel Core i7-13700 with a -1% delta — have nearly identical average benchmark scores, suggesting that any of these CPUs would yield similar results in this game. The processor is simply not the constraint.

GPU Role

The Radeon RX 6750 XT is built on the RDNA 2.0 architecture with the Navi 22 chip, featuring 2560 shading units, 160 texture mapping units, and 64 render output units. Its 12 GB of GDDR6 memory on a 192-bit bus delivers 432.0 GB/s of bandwidth, and the boost clock reaches 2600 MHz. These specifications translate to a 79th percentile ranking among all GPUs, with an average benchmark score of 35327.

In Microsoft Flight Simulator, the GPU's role becomes dominant at higher resolutions. The Ultra preset at 4K yields only 41.5 FPS, while High at 1080p achieves 77 FPS. The 35.5 FPS difference between these two points is almost entirely attributable to pixel throughput requirements. The pixel rate of 166.4 GPixel/s and texture rate of 416.0 GTexel/s are respectable for the 6000 series, but the simulator's dense scenery and complex lighting at Ultra settings push the renderer hard.

The GPU's nearest rivals include the NVIDIA GeForce RTX 3080 with a -1.3% delta and the AMD Radeon RX 5600M with a 0.2% delta. The 6750 XT's average score sits within 1.3% of these parts, indicating comparable raw compute. However, the measured FPS in this game shows that 12 GB of VRAM is sufficient for the tested presets, as no memory-related stutter is reflected in the average values. The 40 RT cores support DirectX 12 Ultimate features, though the simulator's use of ray tracing is not directly measured here. The data consistently shows the GPU as the scaling factor when moving from 1440p to 4K, particularly at Medium and High settings where the FPS drops by roughly a quarter.

Settings Recommendations

The measured rows provide a clear guide for optimizing the experience. At 1920x1080, the High preset delivers 77 FPS, which is comfortable for a flight simulator, while Ultra drops to 70.5 FPS — a 6.5 FPS penalty for the highest visual quality. The Medium preset at 97.5 FPS offers a substantial margin over High, but the visual compromise may not be worth the extra 20.5 FPS for most users. Low at 126.4 FPS is smooth but sacrifices too much visual fidelity for a simulator where situational awareness matters.

At 2560x1440, the High preset achieves exactly 60 FPS, which is the minimum threshold for smooth motion on standard displays. Medium provides 80.5 FPS, offering headroom for complex scenes, while Ultra falls to 56.9 FPS, which may introduce perceptible judder during dense urban or weather-heavy scenarios. For 1440p users, Medium or High are the optimal choices, with High being the best balance of fidelity and performance.

At 3840x2160, the situation becomes more constrained. High produces 44.3 FPS, which is playable but not smooth, while Medium reaches 58.6 FPS — a more acceptable level. Low at 74.4 FPS is the only preset that provides comfortable headroom at 4K. The Ultra preset at 41.5 FPS is borderline unusable for sustained flight. The data suggests that 4K users should select Medium as the primary preset, with Low as a fallback for demanding scenarios. The 14.3 FPS difference between Medium and High at 4K is significant enough to favor Medium.

How This Combo Ranks

The combination of the Ryzen 9 5900X and Radeon RX 6750 XT ranks 838 out of 1795 tested combos in Microsoft Flight Simulator. This places it in the 47th percentile, meaning slightly more than half of all tested configurations deliver higher average frame rates. Given that the CPU ranks in the 90th percentile and the GPU in the 79th, the overall ranking is dragged down by the simulator's demanding nature and the GPU's mid-range positioning.

The rank relative to other combos suggests that this pairing is a mid-pack performer. The delta between the CPU's strong benchmark scores and the combo's in-game ranking indicates that Microsoft Flight Simulator rewards GPU-heavy configurations more than synthetic CPU performance. The 838th position out of 1795 means there are 957 combos that perform better, likely featuring higher-tier GPUs with more memory bandwidth or faster pixel rates. Conversely, 837 combos perform worse, which includes systems with weaker CPUs or older graphics cards.

The percentile gap between the GPU's 79th percentile ranking and the combo's 47th percentile in-game shows that this simulator is particularly punishing on mid-range graphics hardware. The measured FPS at 4K Ultra of 41.5 is below the 60 FPS threshold that many users consider essential, which contributes to the lower overall rank. For users targeting 1080p or 1440p, the ranking is less relevant, as the combo performs adequately at those resolutions.

Measured FPS Breakdown

At 1920x1080, the FPS ranges from 70.5 at Ultra to 126.4 at Low. The Medium preset delivers 97.5 FPS, and High produces 77 FPS. The spread of 55.9 FPS between the lowest and highest presets shows a wide operating range. At 2560x1440, the values are 56.9 for Ultra, 60 for High, 80.5 for Medium, and 103.2 for Low. The 46.3 FPS spread is tighter but still significant. At 3840x2160, the numbers compress further: 41.5 for Ultra, 44.3 for High, 58.6 for Medium, and 74.4 for Low. The 32.9 FPS spread at 4K indicates that even the Low preset cannot fully escape the resolution penalty.

The progression across resolutions at each setting is consistent. Low starts at 126.4, falls to 103.2, and ends at 74.4. Medium goes from 97.5 to 80.5 to 58.6. High moves from 77 to 60 to 44.3. Ultra drops from 70.5 to 56.9 to 41.5. The uniform pattern — roughly 18-27% reduction per resolution step — confirms that the system scales linearly with pixel count. The single largest jump occurs between 1440p and 4K at High settings, where the FPS falls by 15.7, representing a 26% loss. This is the steepest decline in the entire dataset and underscores the GPU's limitations at 4K.

The minimum and maximum FPS values are not recorded, so the average figures represent the central tendency without volatility information. However, the consistency of the averages across four presets and three resolutions provides confidence in the overall behavior. The data shows that the Ryzen 9 5900X and Radeon RX 6750 XT combo is a capable 1080p and 1440p performer, with 4K achievable only at Medium or Low settings.