Microsoft Flight Simulator

Microsoft Flight Simulator is a notoriously demanding title, and the measured data for the Intel Core i5-13400F paired with the AMD Radeon RX 7800 XT shows a system that is well-balanced for high-refresh 1080p and smooth 1440p play, but which begins to show its limits at 4K. The numbers reveal a clear progression: the gap between Low and Ultra settings widens significantly as resolution drops, indicating where the GPU becomes the primary bottleneck. This analysis breaks down the measured FPS data to explain exactly what this combo can deliver across common resolutions and presets.

Resolution Scaling

The resolution scaling pattern is textbook for a mid-range to upper-mid-range GPU like the RX 7800 XT. At 1080p, the system is clearly CPU-bound at lower settings, with the Low preset hitting an average of 145.6 FPS. This high frame rate shows that the i5-13400F’s 10 cores and 16 threads have enough headroom to feed the GPU, but the scaling from Low to Ultra at 1080p is steep: from 145.6 FPS down to 81.3 FPS, a drop of roughly 44%. This indicates that even at 1080p, the Ultra preset is heavily taxing the GPU’s shading units and texture units.

Moving to 1440p, the average frame rates compress into a tighter band. The Low preset drops to 119.6 FPS, while Ultra falls to 68.3 FPS. The delta between Low and Ultra at 1440p is about 43%, nearly identical to 1080p, but the absolute numbers are lower across the board. This suggests the GPU is starting to become the limiting factor, as the resolution increase demands more pixel throughput that the RX 7800 XT’s 16 GB of GDDR6 memory and 624.1 GB/s bandwidth can only partially offset.

At 4K (3840x2160), the pattern shifts decisively. The Low preset averages 84 FPS, which is still playable, but the Ultra preset falls to 48.7 FPS. More importantly, the difference between Medium (69.1 FPS) and High (50.5 FPS) at 4K is a massive 27% drop, showing that the GPU is saturated. The data indicates that at 4K, the RX 7800 XT is the definitive bottleneck, as the CPU’s role diminishes and the raw fill rate and compute power of the GPU dictate performance. The scaling from 1080p Low (145.6 FPS) to 4K Low (84 FPS) represents a 42% reduction, while 1080p Ultra (81.3 FPS) to 4K Ultra (48.7 FPS) is a 40% reduction, confirming the GPU is the limiting component across all presets at higher resolutions.

GPU Role

The AMD Radeon RX 7800 XT is built on the RDNA 3.0 architecture with the Navi 32 chip, manufactured on a 5 nm process by TSMC. Its specifications are central to understanding the measured results. The GPU has a base clock of 1295 MHz and a boost clock of 2430 MHz, with a game clock of 2124 MHz. These clocks are relatively high, allowing the card to maintain strong performance in a flight simulator that is often bound by single-threaded draw calls and physics calculations.

The 16 GB of GDDR6 memory on a 256-bit bus provides 624.1 GB/s of bandwidth. This is crucial for Microsoft Flight Simulator, which streams large textures and terrain data. The benchmark data shows that at 1080p and 1440p, the memory bandwidth is sufficient, as the frame rates scale predictably with settings. However, at 4K, the bandwidth becomes a limiting factor. The 4K Ultra result of 48.7 FPS is particularly telling; it suggests that the GPU is not just fill-rate limited but also memory-bound, as the large frame buffer demands exceed the available bandwidth.

The GPU’s compute capabilities are also relevant. With 3840 shading units, 240 TMUs, and 96 ROPs, the RX 7800 XT delivers 37.32 TFLOPS of FP32 performance. This raw compute power is why the card can handle the High preset at 1440p (72.1 FPS) reasonably well, but it is not enough to maintain 60 FPS at 4K High (50.5 FPS). The card’s 60 RT cores are present but do not appear to be a factor in the measured data, as the game’s standard benchmarks likely do not rely heavily on ray tracing. The overall GPU percentile rank of 76 shows that it sits above average, but the nearest rivals—such as the NVIDIA P104-100 with a 0.4% higher average score—indicate it is not a top-tier performer, which aligns with the 4K results.

FAQ

Q: What is the average FPS at 1080p with High settings?

A: The measured average FPS at 1920x1080 with High settings is 86.9 FPS. This is a solid result for a flight simulator, providing smooth gameplay for most users.

Q: Can this system handle 4K at playable frame rates?

A: At 3840x2160, the Low preset averages 84 FPS, which is playable, but the High preset drops to 50.5 FPS and Ultra to 48.7 FPS. For a consistent 60 FPS experience at 4K, you would need to use Low or Medium settings.

Q: How much performance is lost going from 1080p to 1440p on the Ultra preset?

A: At 1080p Ultra, the average FPS is 81.3. At 1440p Ultra, it is 68.3 FPS. This represents a 16% reduction in average frame rate.

Q: Is the CPU or GPU the main bottleneck at 1440p?

A: The data suggests the GPU is the primary limiting factor at 1440p. The scaling from Low (119.6 FPS) to Ultra (68.3 FPS) is a 43% drop, which is typical of GPU-bound scenarios, as the CPU has enough headroom to push higher frame rates at lower settings.

Q: What is the best resolution to use for a balance of quality and performance?

A: The 2560x1440 resolution with High settings offers a good balance, averaging 72.1 FPS. This provides a significant visual upgrade over 1080p while maintaining a frame rate above the 60 FPS threshold.

Q: How does the RX 7800 XT compare to its nearest rival in terms of average benchmark score?

A: The RX 7800 XT has an average benchmark score of 32619. Its nearest rival, the NVIDIA P104-100, has a score of 32747, which is 0.4% higher. The AMD FirePro S9300 X2 scores 32540, which is 0.2% lower.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of the system’s capabilities. At 1920x1080, the frame rates are consistently high across all presets. The Low preset leads with an average of 145.6 FPS, followed by Medium at 114.2 FPS, High at 86.9 FPS, and Ultra at 81.3 FPS. This ordering shows that the Medium preset is the sweet spot for high-refresh monitors, as it stays above 110 FPS, while High and Ultra dip below the 90 FPS mark.

At 2560x1440, the averages are 119.6 FPS (Low), 91 FPS (Medium), 72.1 FPS (High), and 68.3 FPS (Ultra). The drop from Medium to High is 18.9 FPS, a 21% reduction, which is more significant than the 1080p drop from Medium to High (27.3 FPS, a 24% reduction). This indicates that the GPU is working harder at 1440p, and the settings have a more pronounced impact on performance.

At 3840x2160, the results are 84 FPS (Low), 69.1 FPS (Medium), 50.5 FPS (High), and 48.7 FPS (Ultra). The gap between Medium and High is 18.6 FPS, a 27% reduction, which is the largest percentage drop among all resolutions. This highlights that the High preset at 4K is particularly demanding, likely due to the increased texture detail and shadow complexity. The Ultra preset offers only marginal gains over High, with just a 1.8 FPS difference, suggesting that the Ultra preset’s additional effects are not worth the performance cost at 4K.

CPU Role

The Intel Core i5-13400F is a 10-core, 16-thread processor based on the Raptor Lake architecture, with a base clock of 2.50 GHz and a boost clock of 4.60 GHz. Its 20 MB of shared L3 cache and dual-channel memory support are adequate for feeding the GPU in most scenarios. The CPU’s benchmark scores are strong for its class, with a 3DMark max threads score of 7307 and a Cinebench R23 multicore score of 21279. This places it in the 82nd percentile of all CPUs, with an average benchmark score of 25236.

In Microsoft Flight Simulator, the CPU’s role is to handle the simulation logic, physics, and draw calls. The measured data shows that the CPU is not a bottleneck at 1080p, as the Low preset achieves 145.6 FPS, which is well above what most monitors can display. However, the single-thread performance is also important. The 3DMark single-thread score of 960 and Cinebench R23 single-core score of 3004 indicate that the i5-13400F has strong single-core performance, which is critical for a game that often relies on a few heavily loaded threads.

The nearest rivals to the i5-13400F provide context for its performance. The AMD Ryzen 5 5600X3D has a slightly higher average score of 25365, which is 0.5% above the i5-13400F, while the Intel Core i7-13620H is nearly identical at 25201, only 0.1% lower. This suggests that the CPU is well-matched to the GPU, as neither component is significantly overpowered relative to the other. The 65 W TDP also means the CPU is efficient, though the data does not show a direct impact on FPS beyond the frame rate results.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend on the target resolution and frame rate. For 1080p, the Medium preset is the best recommendation, as it delivers 114.2 FPS, which is smooth on most high-refresh monitors. The High preset at 86.9 FPS is also viable, but the drop from Medium is noticeable, and the visual gains may not justify the 24% performance loss for all users. The Low preset at 145.6 FPS is only useful for competitive play, which is rare in a flight simulator.

For 1440p, the High preset is the clear choice, averaging 72.1 FPS. This provides a good balance of visual fidelity and performance, staying above the 60 FPS threshold. The Medium preset at 91 FPS is also excellent, but the High preset’s improved shadows and texture filtering are worth the slight reduction. The Ultra preset at 68.3 FPS is playable, but the 5% drop from High suggests that the extra effects are not well-optimized.

At 4K, the Medium preset is the only sensible option for most users, averaging 69.1 FPS. The Low preset at 84 FPS is smoother, but the visual quality is severely reduced. The High preset at 50.5 FPS is too close to the 48.7 FPS of Ultra, meaning that neither is ideal for maintaining a consistent 60 FPS experience. If you have a 4K display, the data strongly suggests sticking to Medium settings to ensure a playable frame rate without sacrificing too much detail. The overall combo rank of 647 out of 1795 combinations indicates that this system is above average for the game, but it is not a top-tier 4K solution.