Microsoft Flight Simulator

The pairing of the AMD Ryzen 5 3600 with the NVIDIA GeForce RTX 5090 in Microsoft Flight Simulator presents a fascinating case of generational imbalance, where the GPU's immense power is frequently held in check by the CPU's older architecture. Benchmark results show that this combination ranks 262nd out of 1795 tested combos, placing it in the top 15% of all systems tested. The data across all resolutions and settings reveals a pattern where the RTX 5090 is rarely the limiting factor, instead exposing the Ryzen 5 3600's Zen 2 architecture as the primary constraint in this flight simulator.

Settings Recommendations

The measured FPS data indicates that the Ultra preset is the most demanding configuration, consistently delivering the lowest frame rates at every resolution. At 4K, Ultra averages 80.3 FPS, while High settings improve this to 82 FPS, a marginal gain of only 1.7 FPS. This narrow gap suggests that the system becomes CPU-bound at these higher settings, where the additional GPU workload from Ultra does not translate into significantly better performance. The data shows that Medium settings at 4K deliver 105.5 FPS, which is a substantial 25.2 FPS improvement over High, indicating that this preset offers the best balance for 4K gaming.

For 1440p, the pattern shifts slightly, with High settings producing 101.6 FPS and Ultra achieving 103.5 FPS—a rare instance where Ultra outperforms High by 1.9 FPS, likely due to measurement variance. However, Medium at 1440p delivers 113.1 FPS, which is 11.5 FPS higher than High and represents the sweet spot for this resolution. At 1080p, the differences become more pronounced, with Low achieving 135.6 FPS, Medium reaching 126.3 FPS, and High at 111.6 FPS. The 24 FPS gap between Medium and Low at 1080p suggests that Low settings may be necessary for the highest refresh rate displays, while Medium offers a more visually appealing experience with still-respectable frame rates.

When comparing across resolutions, the data shows that 1080p Medium produces 126.3 FPS, which is only 21.2 FPS higher than 1440p Medium's 113.1 FPS and 20.8 FPS higher than 4K Medium's 105.5 FPS. This relatively small scaling penalty suggests that the CPU bottleneck becomes more apparent at lower resolutions, where the GPU has more headroom but the processor cannot feed it fast enough. For most users, the Medium preset at any resolution provides the most sensible starting point, offering the largest performance improvement over High while maintaining visual fidelity. High settings at 4K produce only 82 FPS, which is below the 90 FPS threshold many flight sim enthusiasts prefer for smooth panning, making Medium the recommended choice for that resolution.

GPU Role

The NVIDIA GeForce RTX 5090 features a massive 32 GB of GDDR7 memory on a 512-bit bus, delivering 1.79 TB/s of bandwidth, paired with a boost clock of 2407 MHz. This GPU is built on the Blackwell 2.0 architecture with 21,760 shading units and 170 RT cores, positioning it as one of the most powerful graphics cards ever produced. In Microsoft Flight Simulator, the data reveals that this GPU's capabilities are largely underutilized when paired with the Ryzen 5 3600, as the frame rate differences between settings and resolutions are often smaller than expected.

The VRAM allocation is particularly noteworthy: even at 4K Ultra settings, the game's average FPS of 80.3 suggests that the 32 GB frame buffer is not a limiting factor, as the RTX 5090's memory capacity far exceeds the demands of this simulation. The memory clock runs at 1750 MHz, translating to 28 Gbps effective, which provides ample bandwidth for high-resolution textures. However, the benchmark results indicate that the GPU's raw compute power—104.8 TFLOPS FP32—cannot be fully expressed due to the CPU constraint.

The RTX 5090's 104.8 TFLOPS of FP32 performance and 1,636.8 GTexel/s texture rate are exceptionally high numbers, yet the observed FPS scaling does not reflect this power. When moving from 4K Ultra to 4K Low, the average FPS increases from 80.3 to 111.1, a gain of 30.8 FPS, but this is far less than the GPU's theoretical headroom would suggest. This pattern holds across all resolutions, with the 1080p Low result of 135.6 FPS being the highest recorded value, indicating that the CPU's single-thread performance—rated at 696 in 3DMark single-thread tests—is the critical bottleneck.

FAQ

Q: Why does the RTX 5090 perform so much better in synthetic benchmarks than in Microsoft Flight Simulator?

A: The GPU's PassMark G3D score of 39,650 and its 94th percentile ranking among all GPUs demonstrate its immense theoretical power. However, in this game, the Ryzen 5 3600's 76th percentile CPU ranking and its 3DMark single-thread score of 696 limit the frame delivery, as flight simulator workloads are heavily dependent on single-core performance for physics and scene management.

Q: Is there a significant difference between High and Ultra settings for this combo?

A: The data shows minimal differences: at 4K, High produces 82 FPS while Ultra delivers 80.3 FPS, a gap of only 1.7 FPS. At 1440p, the difference is 1.9 FPS (101.6 vs 103.5), and at 1080p, it is 2.7 FPS (111.6 vs 108.9). These tiny margins indicate that the CPU bottleneck masks the visual quality differences between these presets.

Q: What is the best resolution to use with this hardware combination?

A: Based on the measured FPS data, 1440p Medium provides 113.1 FPS, which is a balanced experience. For higher frame rates, 1080p Low achieves 135.6 FPS, while 4K Medium at 105.5 FPS offers the most immersive experience without dropping below the 100 FPS mark.

Q: How does this combo compare to other tested systems in the database?

A: This pairing ranks 262nd out of 1,795 tested combinations, placing it in the top 14.6% of all systems. This ranking reflects the strong GPU but is held back by the CPU's age, as the Ryzen 5 3600 was released in 2019 and its nearest rival, the Intel Core i5-11400, scores nearly identically at -0.1% deltaPct.

Q: Does the RTX 5090's 32 GB VRAM matter for this game?

A: The benchmark results show no evidence of VRAM limitations, as even at 4K Ultra the game runs at 80.3 FPS average. The 32 GB frame buffer is far larger than what Microsoft Flight Simulator requires, and the performance constraints are clearly CPU-related rather than memory-related.

Q: Are the Low settings playable for competitive or serious simulation use?

A: Yes, the data shows that 1080p Low delivers 135.6 FPS and 1440p Low produces 124.8 FPS, both of which are excellent for smooth flight controls. Even 4K Low maintains 111.1 FPS, making it a viable option for users who prioritize frame rate over visual fidelity.

Measured FPS Breakdown

At 1920x1080, the full range of settings was tested with the following average frame rates: Low achieved 135.6 FPS, Medium produced 126.3 FPS, High delivered 111.6 FPS, and Ultra reached 108.9 FPS. The progression from Low to Ultra shows a total performance drop of 26.7 FPS, with the largest single-step decline occurring between Medium and High at 14.7 FPS. This suggests that Medium settings provide the best performance-to-quality ratio at this resolution, as the jump to High costs a significant 11.8% of the frame rate.

At 2560x1440, the average FPS values were: Low at 124.8 FPS, Medium at 113.1 FPS, High at 101.6 FPS, and Ultra at 103.5 FPS. Interestingly, Ultra outperforms High by 1.9 FPS, which is anomalous but consistent with the CPU-bound nature of this configuration. The scaling from 1080p to 1440p is modest, with Medium dropping from 126.3 to 113.1 FPS, a reduction of 13.2 FPS, indicating that the GPU is still capable of handling the increased pixel count without major penalties.

At 3840x2160, the results were: Low at 111.1 FPS, Medium at 105.5 FPS, High at 82 FPS, and Ultra at 80.3 FPS. The most dramatic change occurs between Medium and High, where the frame rate falls by 23.5 FPS, representing a 22.3% reduction. This steep decline at 4K suggests that High and Ultra presets introduce rendering workloads that the CPU cannot adequately process, even though the GPU has ample headroom. The overall trend across all resolutions shows that this combo excels at Medium settings, with 4K Medium being the highest resolution that maintains over 100 FPS.

How This Combo Ranks

The combination of the AMD Ryzen 5 3600 and NVIDIA GeForce RTX 5090 achieves a rank of 262 out of 1,795 tested combinations in Microsoft Flight Simulator, placing it in the 85th percentile of all systems. This ranking is remarkably strong for a CPU that was released in 2019, especially considering that the Ryzen 5 3600's average benchmark score of 18,129 places it at the 76th percentile of all CPUs. The GPU's 94th percentile ranking among all GPUs, with an average benchmark score of 84,306, is the primary driver of this high combo ranking.

In terms of CPU rivals, the Ryzen 5 3600 sits extremely close to several competitors: the Intel Core i5-11400 scores 18,150 (a -0.1% deltaPct), the AMD Ryzen 5 7535HS scores 18,101 (a 0.2% deltaPct), and the AMD Ryzen 5 1600 scores 18,158 (a -0.2% deltaPct). These minuscule differences, all within 0.3% of each other, indicate that the CPU choice has a negligible impact on the overall combo ranking compared to the GPU. The AMD EPYC 9274F also appears in the nearest rivals list with a score of 18,189, showing that even server-class processors from the same generation perform nearly identically in this context.

The RTX 5090's nearest rivals are similarly close in performance: the NVIDIA GeForce RTX 5090 D scores 84,241 (0.1% deltaPct), the RTX 5050 Mobile scores 84,171 (0.2% deltaPct), and the AMD Radeon PRO W6600 scores 83,209 (1.3% deltaPct). This clustering suggests that the GPU's raw compute power is not the differentiator in this game; instead, the CPU bottleneck dominates the final ranking. The 262nd place ranking out of 1,795 combos means that this system outperforms 1,533 other configurations, but it also reveals that a more modern CPU paired with this same GPU would likely rank significantly higher, given that the data shows the Ryzen 5 3600 constrains the RTX 5090's full potential.