Microsoft Flight Simulator

# Microsoft Flight Simulator: Intel Core i5-10400F + AMD Radeon RX 7800 XT

This combination of Intel's 6-core Comet Lake processor and AMD's RDNA 3.0 mid-range GPU produces a fascinating split personality in Microsoft Flight Simulator. At 1080p, the system delivers playable-to-excellent frame rates across all presets, but the data reveals a clear transition point where the workload shifts from CPU-bound to GPU-bound. The measured results show this pairing ranks 1279th out of 3714 tested combos, placing it comfortably in the upper third of all configurations. The i5-10400F, with its 6 cores and 12 threads boosting to 4.30 GHz, appears to be the primary constraint at lower resolutions, while the RX 7800 XT's 16 GB of GDDR6 memory and 624.1 GB/s bandwidth become the deciding factor as resolution climbs.

Resolution Scaling

The FPS drop from 1080p to 4K tells a clear story about where the bottleneck lives in this system. At High settings, the average frame rate falls from 87 FPS at 1920x1080 to 70 FPS at 2560x1440, then down to 52 FPS at 3840x2160. That represents a 40% reduction from 1080p to 4K, which is a substantial but not catastrophic decline. The pattern suggests the RX 7800 XT is the limiting component at higher resolutions, as the pixel count increases demand on the GPU's 3840 shading units and 96 ROPs.

The Low preset tells an even more revealing story. At 1080p Low, the system produces 134 FPS, which drops to 120 FPS at 1440p and then to 88 FPS at 4K. The relatively small gap between 1080p and 1440p (only 14 FPS) combined with the larger drop to 4K indicates that at lower settings, the i5-10400F's single-thread performance (688 in 3dmark_single_thread) becomes the ceiling. The CPU's 2.90 GHz base clock and 4.30 GHz boost clock are adequate for maintaining high frame rates at 1080p, but the GPU's workload grows disproportionately as resolution increases.

Medium settings show a similar scaling pattern with an interesting addition: this is the only preset with complete min/max data. At 4K Medium, the average is 69 FPS with a minimum of 59 and maximum of 79, while 1440p Medium produces 93 FPS (79 min, 107 max) and 1080p Medium reaches 116 FPS (98 min, 133 max). The 47 FPS spread between 1080p and 4K at Medium settings indicates that the RX 7800 XT's compute capabilities, rated at 37.32 TFLOPS FP32, are being progressively saturated as resolution climbs.

Ultra settings present the steepest scaling curve. The system manages 83 FPS at 1080p, drops to 67 FPS at 1440p, and falls to 49 FPS at 4K. The 34 FPS difference between 1080p and 4K at Ultra suggests this preset stresses both components heavily, but the GPU's 2430 MHz boost clock and 16 GB memory buffer are the primary factors in maintaining playability at the highest fidelity. The data indicates that 4K Ultra is right at the edge of what this combo can handle, with the 49 FPS average barely crossing the threshold of smooth gameplay.

Settings Recommendations

Examining the measured rows, Medium settings emerge as the sweet spot for this combination, particularly at higher resolutions. At 4K, Medium delivers 69 FPS average compared to 52 FPS at High and 49 FPS at Ultra, representing a 33% improvement over High and a 41% improvement over Ultra. The min FPS of 59 at 4K Medium ensures relatively stable frame pacing, whereas the lack of min data for High and Ultra suggests these presets may produce more erratic performance.

At 1440p, Medium produces 93 FPS with a minimum of 79, which is a remarkably stable experience. The jump from Medium to High costs 23 FPS (93 to 70), while the jump from High to Ultra costs only 3 FPS (70 to 67). This non-linear scaling suggests that High settings at 1440p are hitting diminishing returns, where the visual improvements are minimal relative to the performance penalty. For users prioritizing smoothness, Medium at 1440p offers 93 FPS with a 79 FPS floor, which is arguably the best experience in the entire dataset.

The 1080p results present a different calculus. Here, even Ultra achieves 83 FPS, and Low reaches 134 FPS. The gap between Medium (116 FPS) and High (87 FPS) is 29 FPS, which is substantial. Given that the i5-10400F's multi-threaded performance (10283 in cinebench_r23_multicore) seems adequate for this workload at 1080p, the GPU is likely the limiting factor even at this resolution. The data suggests that 1080p High provides a good balance, but for competitive or high-refresh scenarios, Medium's 116 FPS average with a 98 FPS minimum is the most reliable choice.

For 4K users, the choice is stark. Ultra at 49 FPS may be acceptable for a flight simulator where precise timing is less critical, but Medium at 69 FPS provides a much more comfortable margin. The 20 FPS difference between Medium and Ultra at 4K represents a 41% performance gain for what is likely a modest visual difference in a game that already pushes high detail levels. The data clearly favors Medium as the recommended preset for most users, with High serving as a compromise for those who prioritize visuals over frame rate stability.

GPU Role

The RX 7800 XT's 16 GB of GDDR6 memory on a 256-bit bus provides 624.1 GB/s of bandwidth, which is crucial for Microsoft Flight Simulator's vast streaming environments. The GPU's 28,100 million transistors on a 346 mm² die at 5 nm enable 37.32 TFLOPS of FP32 compute, and the 60 ray accelerators support DirectX 12 Ultimate features. However, the benchmark data shows this GPU's percentile rank is only 51st among all GPUs, with an average benchmark score of 11627, placing it in a strange position where its gaming performance in this title exceeds its synthetic benchmark standing.

The clock behavior is notable: the base clock of 1295 MHz is conservative, but the boost clock reaches 2430 MHz, and the game clock is rated at 2124 MHz. This wide boost range suggests the GPU can dynamically adjust its power draw from the 263 W TDP to match workload demands. In Microsoft Flight Simulator, the scaling from 1080p Low (134 FPS) to 4K Low (88 FPS) indicates the GPU is being progressively utilized, but the 46 FPS drop suggests that even at Low settings, the 4K resolution is pushing the 96 ROPs to their limit.

The memory configuration deserves special attention. The 16 GB capacity is generous for a 2020 game, and the 624.1 GB/s bandwidth should be sufficient for high-resolution textures. However, the data shows that at 4K Ultra, the system only manages 49 FPS, which might indicate that memory bandwidth becomes a constraint even with this ample capacity. The 2438 MHz memory clock (19.5 Gbps effective) is respectable, but Microsoft Flight Simulator's continuous terrain streaming may benefit from even higher bandwidth. The GPU's predecessor being Navi II and successor Navi IV suggests this is a transitional product, and its performance in this title reflects that positioning.

The GPU's benchmark scores provide additional context. The passmark_g3d score of 24176 is strong, but the directx_12 score of only 93 is surprisingly low, possibly indicating driver overhead or architectural inefficiencies in certain workloads. The geekbench_vulkan score of 54228 is much more robust, suggesting that Vulkan-based rendering paths may perform better than DirectX 12 in this game. The 3dmark_steel_nomad_dx12 score of 4157 reinforces this pattern, showing the GPU's DirectX 12 performance is not its strongest suit.

FAQ

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

A: Based on the measured data, 1440p Medium provides the most balanced experience at 93 FPS average with a 79 FPS minimum. While 1080p offers higher frame rates (up to 134 FPS at Low), the 1440p Medium preset delivers 4K-like visual quality with significantly better performance than 4K, which tops out at 69 FPS on Medium.

Q: Is the RX 7800 XT powerful enough for 4K flight simulation?

A: The data shows 4K is playable but requires settings compromises. At 4K Medium, the system achieves 69 FPS average with a 59 FPS minimum. However, 4K High drops to 52 FPS and 4K Ultra falls to 49 FPS, indicating that 4K is only viable at Medium settings or below for consistent performance.

Q: How does the i5-10400F's 6-core/12-thread configuration affect performance?

A: The CPU's 12 threads and 12 MB of shared L3 cache provide 4748 in 3dmark_16_threads and 4735 in 3dmark_max_threads, suggesting multi-threaded workloads are handled adequately. In this game, the CPU appears sufficient at 1080p where it reaches 134 FPS at Low, but the scaling to 4K shows the GPU becomes the limiting factor.

Q: What is the significance of the GPU's 16 GB memory capacity?

A: The 16 GB GDDR6 buffer with 624.1 GB/s bandwidth ensures the game can load high-resolution textures without stuttering. This is particularly important for Microsoft Flight Simulator's streaming world, though the 4K Ultra result of 49 FPS suggests memory capacity is not the only constraint.

Q: How does this combo's 1279th rank out of 3714 combinations compare to its component standings?

A: The combo ranks in the 65th percentile (1279/3714), which is higher than the GPU's individual 51st percentile but slightly lower than the CPU's 68th percentile. This suggests the combination performs better than the GPU's synthetic benchmarks would predict, likely due to the CPU's strong single-thread performance.

Q: Which preset provides the most stable frame rate across all resolutions?

A: Medium settings consistently provide the best minimum frame rates: 98 FPS at 1080p, 79 FPS at 1440p, and 59 FPS at 4K. This preset also shows the smallest performance drop between resolutions (47 FPS from 1080p to 4K), indicating it is the most predictable setting for this hardware.

How This Combo Ranks

The combo rank of 1279 out of 3714 tested configurations places this system in the 65th percentile of all combinations. This is a respectable position, but the component-level data reveals an interesting imbalance. The i5-10400F's percentile of 68 among all CPUs is notably higher than the RX 7800 XT's percentile of 51 among all GPUs. This suggests the CPU is the stronger component relative to its peers, and the combo's overall rank is likely being pulled down by the GPU's comparatively weaker standing.

Looking at the CPU's nearest rivals provides context for its performance tier. The Intel Xeon 6756E scores 14163 with a delta of 0.2%, and the Intel Core 7 160UL scores 14232 with a delta of -0.3%. These are enterprise and low-power parts, respectively, which indicates the i5-10400F's 14185 average benchmark score is competitive with parts that cost significantly more. The AMD EPYC 7552 at 14115 (0.5% delta) and AMD Ryzen 3 7320C at 14277 (-0.6% delta) round out a group of rivals that span very different market segments.

The GPU's nearest rivals present a more concerning picture. The NVIDIA GeForce GTX 1660 scores 11680 with a -0.5% delta, while the AMD Radeon Pro 5500M scores 11528 with a 0.9% delta. These are older or mobile-oriented parts, and the RX 7800 XT's 11627 average score places it in their company. The NVIDIA Tesla K20c at 11479 (1.3% delta) and AMD Radeon RX 6500 XT at 11842 (-1.8% delta) complete a list that includes a compute card and a budget gaming GPU. This suggests the RX 7800 XT's synthetic benchmark performance is not representative of its gaming capabilities, or that the benchmark suite favors different architectures.

The discrepancy between the combo's 65th percentile rank and the GPU's 51st percentile suggests that Microsoft Flight Simulator's specific workload favors this combination. The game's reliance on CPU single-thread performance (the i5-10400F scores 688 in 3dmark_single_thread) and GPU raw throughput may align well with this pairing's strengths. The data implies that users should not judge this combo solely on the GPU's synthetic benchmark standing.

CPU Role

The Intel Core i5-10400F's 6 cores and 12 threads, based on the Comet Lake architecture at 14 nm, provide a solid foundation for Microsoft Flight Simulator. The CPU's 2.90 GHz base clock boosts to 4.30 GHz, and its 3dmark_single_thread score of 688 indicates respectable single-core performance. This is critical for a flight simulator that likely has significant per-frame CPU work, particularly for physics and AI calculations. The CPU's 68th percentile rank among all processors confirms it is above average, but its nearest rivals include server and low-power parts, suggesting its performance is competitive across diverse workloads.

The CPU's memory support for DDR4 in dual-channel configuration provides 42.7 GB/s of bandwidth, which is modest by modern standards. However, the game's performance at 1080p Low (134 FPS) suggests this bandwidth is sufficient for the CPU's tasks. The 12 MB of shared L3 cache is notable for a 6-core part, and the 3dmark_16_threads score of 4748 versus 3dmark_max_threads score of 4735 indicates the CPU scales well up to its full thread count. This is a positive sign for a game that may use additional threads for background loading and simulation tasks.

The CPU's benchmark scores paint a picture of balanced performance. The cinebench_r23_multicore score of 10283 is respectable, while the single-core score of 1451 shows the architecture's efficiency at lower clock speeds. The passmark_multithread score of 12115 and passmark_single_thread score of 2541 provide additional context, with the latter indicating strong per-core performance for a 14 nm part. The geekbench_multicore score of 6257 and single-core of 1420 confirm this pattern, showing the CPU excels in both multi-threaded and single-threaded workloads.

In the context of this game, the CPU's role becomes more pronounced at lower resolutions. The data shows that at 1080p, reducing settings from Ultra (83 FPS) to Low (134 FPS) yields a 51 FPS improvement. This 61% performance gain suggests the CPU is capable of feeding the GPU at higher frame rates, but the GPU becomes the limiting factor as resolution increases. At 4K, the difference between Ultra (49 FPS) and Low (88 FPS) is 39 FPS, indicating the GPU's workload dominates at this resolution. The CPU's 65 W TDP and Intel Socket 1200 compatibility make it a reasonable choice for this pairing, though its 14 nm process node is dated compared to the GPU's 5 nm.

Measured FPS Breakdown

At 1920x1080, the system delivers its highest frame rates across all presets. Low settings produce an average of 134 FPS, Medium reaches 116 FPS with a minimum of 98 and maximum of 133, High achieves 87 FPS, and Ultra manages 83 FPS. The 51 FPS spread between Low and Ultra demonstrates the GPU's capacity at this resolution, while the 33 FPS gap between Medium and High suggests diminishing returns at higher presets. The 1080p Medium results are particularly strong, with the 98 FPS minimum ensuring consistent performance.

At 2560x1440, the frame rates remain playable but show the expected decline. Low delivers 120 FPS, Medium produces 93 FPS (79 min, 107 max), High reaches 70 FPS, and Ultra falls to 67 FPS. The 27 FPS drop from Low to Medium is significant, but the 23 FPS gap between Medium and High indicates a steeper penalty for higher settings. The 1440p Ultra result of 67 FPS is only 4 FPS below the 4K Medium result, which is an interesting data point suggesting that resolution scaling and settings scaling interact in complex ways.

At 3840x2160, the system's limits become apparent. Low produces 88 FPS, which is still playable, but Medium drops to 69 FPS (59 min, 79 max), High reaches 52 FPS, and Ultra falls to 49 FPS. The 39 FPS difference between Low and Ultra at 4K is the largest absolute spread across all resolutions, indicating the GPU is the primary constraint at this resolution. The 4K Medium result of 69 FPS with a 59 FPS minimum is the only 4K preset with complete min/max data, suggesting this is the most stable configuration at this resolution.

The overall pattern shows that this combo can handle 1080p at any preset, 1440p at up to High settings, and 4K at Medium or below. The data also reveals that Medium settings provide the most consistent experience across all resolutions, with the smallest min/max spread and predictable scaling. The 116 FPS at 1080p Medium, 93 FPS at 1440p Medium, and 69 FPS at 4K Medium represent a smooth gradient that users can rely on for consistent performance regardless of their display resolution.