Microsoft Flight Simulator

Microsoft Flight Simulator pairs a six-core Coffee Lake CPU with a Blackwell GPU, and the measured frames reveal a system that is heavily tilted toward the graphics card. The Intel Core i5-9400, which sits at the 47th percentile among all CPUs, does not bottleneck the RTX 5070 Ti’s output in this simulator, as the 86th-percentile GPU consistently drives high frame rates. The data shows a clear hierarchy: resolution scaling impacts performance, but the RTX 5070 Ti’s 16 GB of GDDR7 memory and 896.0 GB/s bandwidth keep the experience fluid even at 4K, where the simulator’s visual fidelity demands more from the renderer than from the processor.

Resolution Scaling

The frame rate drop from 1080p to 4K is substantial, but it is not a collapse, indicating that the GPU remains the primary workload driver while the CPU maintains a stable baseline. At High settings, the average FPS moves from 105 at 1920x1080 to 94 at 2560x1440, then falls to 69 at 3840x2160. That is a 34% reduction from 1080p to 4K, which aligns with the pixel count increase and suggests the RTX 5070 Ti is scaling predictably without hitting a memory or bandwidth wall. The step from 1440p to 4K is steeper, a 27% drop, because the GPU’s shading units and texture rate are fully engaged at higher resolutions.

Low settings tell a different story: 128 FPS at 1080p, 119 at 1440p, and 108 at 4K. The drop from 1440p to 4K is only 9%, and from 1080p to 4K it is 16%, which is far gentler than the High preset’s scaling. This indicates that at Low settings, the simulator’s workload is less visually intensive, allowing the CPU to keep pace more easily, but the GPU still has headroom, as the 108 FPS at 4K Low is only 15% below the 1080p result. The limiting component at Low settings is likely the CPU’s single-thread performance, since the i5-9400’s 6 cores and 6 threads without hyper-threading cap the frame delivery, but the gap between resolutions narrows because the GPU is not saturated.

At Medium settings, the measured average FPS is 117 at 1080p, 109 at 1440p, and 92 at 4K, with min FPS values of 99, 92, and 78 respectively. The scaling from 1080p to 4K is a 21% drop, which is between the Low and High presets, showing that the Medium preset balances GPU load and CPU overhead well. The min FPS at 4K Medium (78) is higher than the average FPS at 4K High (69), which clarifies that the preset choice matters more than resolution alone for maintaining smoothness. Ultra settings show 104 FPS at 1080p, 89 at 1440p, and 66 at 4K, a 37% drop from 1080p to 4K, which is the steepest scaling in the data, confirming that Ultra pushes the GPU to its limits while the CPU’s role diminishes.

The limiting component is unequivocally the GPU at higher resolutions and presets. The i5-9400’s benchmark scores—a Geekbench multicore of 5141 and a Cinebench R23 multicore of 6629—are modest, but the measured FPS at 4K Ultra (66) is still above 60, indicating that the CPU is not a hard bottleneck even in the most demanding scenario. Instead, the RTX 5070 Ti’s 43.94 TFLOPS of FP32 performance and 686.6 GTexel/s texture rate are the resources being taxed, as the simulator’s terrain rendering and lighting effects scale with resolution. At 1080p Low, the 128 FPS result is close to the CPU’s practical ceiling, as the GPU is underutilized, but the i5-9400’s 4.10 GHz boost clock prevents it from becoming a severe constraint.

Settings Recommendations

The measured data points to Medium as the optimal preset for this combination, particularly at 1440p and 4K, because it delivers the best balance of average FPS and minimum frame stability. At 4K, Medium achieves 92 FPS average with a 78 FPS minimum, which is a 39% improvement over High’s average (69 FPS) and a 28% improvement over Ultra’s average (66 FPS). The min FPS at 4K Medium (78) is also higher than the average FPS at 4K High (69), meaning Medium not only has a higher mean but also better frame pacing, which is critical for a flight simulator where smooth camera pans and terrain streaming matter more than peak rates.

For 1440p users, Medium yields 109 FPS with a 92 FPS minimum, which is a comfortable margin above the 60 FPS threshold, and it is only 10 FPS below Low’s average (119). The step from Medium to High at 1440p costs 15 FPS (from 109 to 94), while the step from Medium to Ultra costs 20 FPS (from 109 to 89). Given that the visual difference between Medium and High in a simulator is often subtle—shadow quality and draw distance—the extra 15 FPS from staying on Medium is more valuable for maintaining a consistent experience during complex flight scenarios. At 1080p, Medium’s 117 FPS average with a 99 FPS minimum is the recommended choice, as it matches Ultra’s average (104 FPS) plus 13 FPS, and it provides a higher minimum than the 1080p High preset, which has no listed min FPS but averages 105 FPS.

Ultra is not recommended for this combo, as the data shows diminishing returns. At 4K Ultra, the 66 FPS average is only 3 FPS above the 60 FPS threshold, and the lack of a min FPS value suggests instability risk, whereas Medium’s 78 FPS minimum provides a safer buffer. The 1080p Ultra result (104 FPS) is nearly identical to High (105 FPS), so Ultra’s extra visual features do not translate into a smoother experience at lower resolutions; they only increase GPU load without a proportional FPS gain. Low is usable for competitive or performance-critical scenarios, but the 128 FPS at 1080p Low versus 117 FPS at Medium shows that the 11 FPS gain is not worth sacrificing the visual clarity that helps with reading instruments and terrain details.

GPU Role

The RTX 5070 Ti’s 16 GB of GDDR7 memory is a decisive factor in this game’s results, as Microsoft Flight Simulator is known for loading large texture sets and terrain data. The 256-bit memory bus delivers 896.0 GB/s of bandwidth, which is sufficient to feed the GPU’s 8960 shading units without causing memory-related stutters at 4K Ultra, where the 66 FPS average indicates the GPU is compute-bound rather than bandwidth-bound. The 45,600 million transistors on a 378 mm² die, fabricated on TSMC’s 5 nm process, provide the raw throughput needed for the simulator’s photogrammetry and weather effects, but the measured FPS shows that the GPU’s 43.94 TFLOPS FP32 performance is the ceiling at high presets.

The clocks are modest for a high-end card—2295 MHz base and 2452 MHz boost—but the Blackwell architecture’s efficiency allows it to sustain high frame rates without excessive thermal throttling, as evidenced by the 4K Medium result of 92 FPS. The 70 RT cores and 280 tensor cores are not heavily utilized in this simulator, as the game primarily relies on rasterization, but their presence in the 50-series die enables the card to handle future updates or DX12 Ultimate features, which the card supports via DirectX 12 Ultimate (12_2). The pixel rate of 235.4 GPixel/s and texture rate of 686.6 GTexel/s are the specs most relevant to this game’s rendering, and the data shows that these resources scale linearly with resolution until the CPU becomes a secondary limiter at 1080p Low.

Comparing to the GPU’s nearest rivals, the RTX 5070 Ti’s average benchmark score of 49957 places it between the AMD Radeon RX 6900 XT (50951, 2% higher) and the AMD Radeon RX 6800 XT (48477, 3.1% lower), but in this game, the 16 GB VRAM and Blackwell’s driver optimizations give it an edge that synthetic scores do not capture. The GPU’s 86th percentile among all GPUs confirms that it is a top-tier part, and the measured FPS at 4K High (69) is respectable for a flight simulator, which is notoriously demanding on both CPU and GPU. The 1750 MHz memory clock (28 Gbps effective) is a key differentiator, as it provides the bandwidth headroom to avoid frame drops when the simulator streams high-resolution satellite imagery.

Measured FPS Breakdown

At 1920x1080, the data shows a narrow spread across presets, with Low averaging 128 FPS, Medium averaging 117 FPS (min 99, max 134), High averaging 105 FPS, and Ultra averaging 104 FPS. The 1080p results indicate that the CPU is the primary limiter, as the difference between Low and Ultra is only 24 FPS, and the GPU’s utilization is likely not saturated at lower resolutions. The 1080p Medium min FPS of 99 is the highest minimum in the entire dataset, suggesting that this resolution and preset combination provides the most stable frame delivery, which is useful for users with high-refresh monitors who prioritize consistency over maximum FPS.

At 2560x1440, the averages are 119 FPS for Low, 109 FPS for Medium (min 92, max 125), 94 FPS for High, and 89 FPS for Ultra. The 1440p results show a clearer GPU influence, as the gap between Low and Ultra widens to 30 FPS, and the Medium preset’s min FPS of 92 is still well above the 60 FPS threshold, making it the safest choice for this resolution. The step from Medium to High at 1440p is 15 FPS, and from High to Ultra is only 5 FPS, which indicates that the Ultra preset’s additional effects (likely volumetric clouds and enhanced reflections) are not worth the performance hit, as the visual improvement is marginal relative to the 5 FPS loss.

At 3840x2160, the averages are 108 FPS for Low, 92 FPS for Medium (min 78, max 106), 69 FPS for High, and 66 FPS for Ultra. The 4K results are where the GPU’s capabilities are fully tested, and the data shows a significant drop from Medium to High (23 FPS), which is the largest single-preset delta in the dataset. This indicates that High enables features that are disproportionately expensive at 4K, such as higher-resolution shadows or longer draw distances, while Medium’s 92 FPS average proves that the RTX 5070 Ti can handle 4K comfortably when settings are tuned. The 4K Low result of 108 FPS is remarkable, as it shows that the GPU has enough headroom to exceed 100 FPS at 4K when the visual load is minimal, but this preset sacrifices too much detail for a simulator where situational awareness is key.

How This Combo Ranks

This specific CPU-GPU combination ranks 799th out of 3714 tested combos in Microsoft Flight Simulator, placing it in the top 21.5% of all configurations. The rank reflects the balance between the i5-9400’s modest CPU performance (47th percentile) and the RTX 5070 Ti’s high GPU performance (86th percentile), with the GPU pulling the combo upward. The i5-9400’s nearest rivals—the Intel Core i7-1068NG7 (avg score 2259, 0.2% higher) and the Intel Core i3-10305 (avg score 2264, 0.4% higher)—have similar synthetic CPU scores, but the measured FPS in this game suggests that the CPU’s six physical cores are sufficient to avoid holding back the GPU at most settings.

The combo’s rank at 799 is influenced by the fact that Microsoft Flight Simulator is more GPU-dependent than many other titles, so the RTX 5070 Ti’s strong performance compensates for the CPU’s age. However, the rank is not higher because the i5-9400 lacks hyper-threading, which limits its ability to handle the simulator’s background threads (e.g., AI traffic, weather simulation) when the GPU is not the bottleneck, particularly at 1080p Low where the 128 FPS result approaches the CPU’s ceiling. The GPU’s nearest rivals, such as the AMD Radeon RX 6900 XT (2% higher synthetic score) and the RX 6800 XT (3.1% lower), would likely produce similar FPS in this game, but the RTX 5070 Ti’s 16 GB VRAM and newer architecture give it an edge in texture-heavy scenes, which is reflected in the combo’s top-quartile ranking.

FAQ

Q: Is the Intel Core i5-9400 a bottleneck for the RTX 5070 Ti in this game?

A: The data shows the CPU is only a minor limiter at low resolutions and presets. At 1080p Low, the combo hits 128 FPS, which is near the CPU’s practical ceiling, but at 4K Ultra, the GPU’s workload dominates, and the 66 FPS average indicates the CPU does not prevent playable frame rates. The i5-9400’s 47th percentile CPU score is low, but the GPU’s 86th percentile compensates in this GPU-heavy title.

Q: What is the best preset for 4K gaming with this combo?

A: Medium is the recommended preset at 3840x2160, as it delivers a 92 FPS average with a 78 FPS minimum. This is 23 FPS higher than High’s 69 FPS average and 26 FPS higher than Ultra’s 66 FPS average, while providing a minimum frame rate that is higher than the average of the higher presets, ensuring smoother gameplay.

Q: How much VRAM does the RTX 5070 Ti have, and is it enough for this game?

A: The RTX 5070 Ti has 16 GB of GDDR7 memory with 896.0 GB/s of bandwidth. The measured FPS at 4K Ultra (66) and 4K High (69) indicates that the VRAM capacity is sufficient for the game’s highest settings, as there is no evidence of memory-related stutters or crashes in the data.

Q: Does the combo perform better at 1440p or 4K relative to the CPU’s limitations?

A: The data shows the combo performs better at 1440p, where the Medium preset achieves 109 FPS with a 92 FPS minimum. At 4K, the Medium preset achieves 92 FPS, which is still playable, but the 1440p result offers a higher minimum frame rate and better headroom for complex scenes, making it the more balanced choice for this CPU-GPU pairing.

Q: How does the RTX 5070 Ti compare to its nearest rival GPUs in synthetic benchmarks?

A: The RTX 5070 Ti’s average benchmark score is 49957, which is 2% lower than the AMD Radeon RX 6900 XT (50951) and 3.1% higher than the AMD Radeon RX 6800 XT (48477). These synthetic scores are close, but the measured FPS in this game shows the RTX 5070 Ti’s advantage in real-world performance due to its 16 GB VRAM and newer architecture.

Q: What is the combo’s overall ranking among tested configurations?

A: This combo ranks 799th out of 3714 tested combos in Microsoft Flight Simulator, placing it in the top 21.5% of all configurations. The ranking is driven by the GPU’s high performance, as the CPU’s modest scores would otherwise place it in a lower tier, but the simulator’s GPU-centric nature allows the RTX 5070 Ti to shine.