Microsoft Flight Simulator

The data for Microsoft Flight Simulator with the Intel Core i5-12400F and AMD Radeon RX 7800 XT reveals a system that scales predictably with resolution, demonstrating a clear transition from CPU-bound behavior at lower resolutions to GPU-bound behavior at 4K. The measured results show a strong pairing that remains playable across all tested settings, though the frame rate curve offers distinct insights into where each component's workload begins and ends.

Resolution Scaling

Examining the transition from 1920x1080 to 3840x2160, the frame rate drop is substantial but not uniform across all quality presets. At Low settings, the average FPS falls from 150 at 1080p to 84.9 at 4K, representing a reduction of 65.1 FPS or approximately 43.4%. This steep decline indicates that even at the lowest graphical load, the GPU is still being heavily tasked by the sheer pixel count of 4K output. The RX 7800 XT's 16 GB of GDDR6 memory and 624.1 GB/s bandwidth are sufficient, but the rendering workload at 3840x2160 clearly dominates.

At Ultra settings, the scaling is less dramatic in absolute terms but still significant: from 81.2 FPS at 1080p down to 48.8 FPS at 4K, a drop of 32.4 FPS. The smaller absolute difference at Ultra compared to Low suggests that at higher settings, the frame rate is already being constrained by the GPU at 1080p, so moving to 4K adds less relative pressure. Looking at the Medium preset, the drop from 114 FPS at 1080p to 69 FPS at 4K (a 45 FPS reduction) shows a middle ground where both CPU and GPU are sharing the load more evenly at lower resolutions.

The High preset tells the most telling story. At 1080p, the system achieves 83.8 FPS, which falls to 70.9 FPS at 1440p, and then to 47.7 FPS at 4K. The relatively mild decline from 1080p to 1440p (12.9 FPS) compared to the sharper fall from 1440p to 4K (23.2 FPS) indicates that at 1440p High, the system is nearing the GPU's saturation point. The data suggests that at 1080p and 1440p with lower presets, the Intel Core i5-12400F's six Performance cores (with 12 threads) are keeping pace adequately, but the 4K results across all settings are consistently GPU-limited, which is expected given the RX 7800 XT's 37.32 TFLOPS FP32 compute capability.

CPU Role

The Intel Core i5-12400F operates with a base clock of 2.50 GHz and a boost clock of 4.40 GHz, featuring 6 cores and 12 threads. Its benchmark scores show a single-thread performance of 909 in 3DMark single-thread and 2332 in Cinebench R23 single-core, which are respectable figures for a mainstream desktop processor. In a flight simulator like Microsoft Flight Simulator, which is known for heavy single-thread dependence in its core simulation loop, this single-core strength is critical.

The CPU's 18 MB of shared L3 cache and dual-channel memory support (compatible with both DDR4 and DDR5) provide adequate bandwidth for feeding the GPU. The data shows that at 1080p Low settings, the system hits 150 FPS, which is likely near the upper limit of what the CPU can feed to the GPU in this scenario. At 1080p Medium, the frame rate drops to 114 FPS, and at High to 83.8 FPS; these declines are attributable to the GPU taking on more work rather than the CPU becoming a bottleneck.

Comparing the CPU's overall benchmark average score of 19221, it sits at the 77th percentile of all CPUs, with its nearest rival being the Intel Core i7-8700K at an average score of 19210 (only 0.1% difference). This places the i5-12400F in a competitive position for gaming workloads. The 3DMark 16-thread score of 5895 and max-thread score of 5912 show that the CPU scales well with additional threads, but the single-thread score of 909 is the more relevant metric for Flight Simulator's engine. At 4K resolutions, the CPU's role diminishes as the GPU becomes the primary limiter, but at 1080p with Low settings, the 150 FPS ceiling appears to be CPU-imposed, suggesting the i5-12400F's 4.40 GHz boost is sufficient to avoid severe bottlenecks in most scenarios.

How This Combo Ranks

Within the benchmark database, this specific combination of the Intel Core i5-12400F and AMD Radeon RX 7800 XT ranks 662nd out of 1795 tested combos for Microsoft Flight Simulator. This places it in the upper third of all combinations, at roughly the 63rd percentile of tested systems. The ranking reflects the balance between the CPU's 77th percentile standing and the GPU's 76th percentile standing, resulting in a combined system that performs slightly above the median for this game.

The GPU's nearest rivals in the database include the AMD FirePro S9300 X2 with an average score of 32540 (0.2% delta), the NVIDIA P104-100 at 32747 (-0.4% delta), and the NVIDIA T600 Mobile at 32849 (-0.7% delta). These comparisons are based on average benchmark scores, not game-specific performance, but they indicate the RX 7800 XT is positioned within a tight cluster of GPUs in the 76th percentile. The CPU's rivals similarly cluster closely: the Intel Core i7-8700K is nearly identical at 19210 (0.1% delta), while the AMD Ryzen 5 7533HS is slightly higher at 19364 (-0.7% delta).

The combo rank of 662 out of 1795 suggests that while neither component is a top-tier performer individually, their pairing produces a well-matched system for Microsoft Flight Simulator. The data shows no obvious pairing mismatch—the CPU is not holding back the GPU at higher resolutions, and the GPU is not underutilized at lower resolutions. This is a coherent mid-to-high-range combination that delivers consistent frame rates across the board.

Measured FPS Breakdown

At 1920x1080, the results are as follows: Low settings produce an average of 150 FPS, which is the highest measured value in the entire dataset. Medium settings yield 114 FPS, High settings drop to 83.8 FPS, and Ultra settings bottom out at 81.2 FPS. The gap between High and Ultra at 1080p is minimal (2.6 FPS), indicating that the Ultra preset's additional graphical effects are not heavily taxing this system at this resolution.

Moving to 2560x1440, the frame rates decline as expected: Low averages 118.4 FPS, Medium 89.7 FPS, High 70.9 FPS, and Ultra 67 FPS. The scaling from 1080p to 1440p shows reductions of 31.6 FPS (Low), 24.3 FPS (Medium), 12.9 FPS (High), and 14.2 FPS (Ultra). The smaller reductions at High and Ultra compared to Low and Medium again point to GPU saturation beginning at these higher settings.

At 3840x2160, the results show: Low averages 84.9 FPS, Medium 69 FPS, High 47.7 FPS, and Ultra 48.8 FPS. Notably, the Ultra setting at 4K yields a slightly higher average FPS (48.8) than High (47.7), a 1.1 FPS difference that is within the margin of measurement variance but suggests that the Ultra preset's optimizations or workload distribution do not consistently penalize performance relative to High at this resolution.

The most striking observation is that at 4K Low (84.9 FPS) the system outperforms 1080p Ultra (81.2 FPS), demonstrating that the RX 7800 XT has substantial headroom when graphical quality is reduced. Conversely, the 1080p Low result of 150 FPS appears to be a hard ceiling, likely constrained by the CPU's single-thread performance in the game's main simulation thread.

FAQ

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

A: Based on the measured data, 2560x1440 with Medium settings (89.7 FPS) or High settings (70.9 FPS) provides a balanced experience. At 1080p, the CPU may limit performance at Low settings (150 FPS ceiling), while at 4K, all presets stay below 85 FPS, with Ultra at 48.8 FPS.

Q: How does this combo perform at 4K Ultra settings?

A: The measured average FPS at 3840x2160 Ultra is 48.8 FPS. This is playable but below the 60 FPS threshold, and the GPU is the clear limiting factor at this resolution and preset.

Q: Is the CPU or GPU the bottleneck at 1080p?

A: At 1080p Low, the 150 FPS average suggests the CPU is the limiting factor, as the GPU has ample headroom. At 1080p Ultra (81.2 FPS), the GPU is more likely the constraint, given the minimal difference from High (83.8 FPS).

Q: How does the i5-12400F compare to its nearest CPU rival?

A: The i5-12400F has an average benchmark score of 19221, which is 0.1% higher than the Intel Core i7-8700K (19210) and 0.3% higher than the Intel Core i5-1335U (19167). It trails the AMD Ryzen 5 7533HS by 0.7%.

Q: What is the frame rate difference between Low and Ultra at 1440p?

A: At 2560x1440, Low settings average 118.4 FPS, while Ultra averages 67 FPS. This represents a 51.4 FPS reduction, or approximately 43.4% lower performance when moving from Low to Ultra.

Q: Does the Ultra preset ever outperform High?

A: Yes, at 3840x2160, Ultra averages 48.8 FPS compared to High's 47.7 FPS, a 1.1 FPS difference. This is the only resolution where Ultra exceeds High in the measured data, though the difference is negligible.

Settings Recommendations

For the Intel Core i5-12400F and AMD Radeon RX 7800 XT in Microsoft Flight Simulator, the optimal preset depends on the target display resolution and frame rate preference. At 1920x1080, the High preset (83.8 FPS) offers a strong balance, as the jump to Ultra (81.2 FPS) provides only a 2.6 FPS gain for presumably higher graphical fidelity. Users prioritizing maximum smoothness should select Medium (114 FPS), which still exceeds 100 FPS.

At 2560x1440, the Medium preset (89.7 FPS) is the recommended sweet spot, delivering near-90 FPS while maintaining a moderate visual quality. The High preset (70.9 FPS) is viable for those wanting better visuals, but the drop below 90 FPS may be noticeable. Ultra at 67 FPS is only marginally slower than High and could be chosen if the visual improvements are valued over a few frames per second. Low at 118.4 FPS is unnecessary given the strong Medium performance.

For 3840x2160, none of the presets achieve 60 FPS, but the Low preset (84.9 FPS) is the only one that maintains a comfortable margin above 60. Medium (69 FPS) is the best choice for 4K if visual quality matters, as it stays above 60 FPS while offering better rendering than Low. High (47.7 FPS) and Ultra (48.8 FPS) are both below 50 FPS and would be recommended only for users who prioritize maximum graphical fidelity over frame rate, though the difference between the two is negligible at this resolution. The data overall suggests that Medium at 1440p provides the best combination of frame rate and visual quality across all tested scenarios.