Microsoft Flight Simulator

Microsoft Flight Simulator is a notorious load generator, and this pairing of an Intel Core i5-11400F with a NVIDIA GeForce RTX 3080 Ti produces a fascinating dataset that clearly illustrates where the bottlenecks lie. The measured frames per second (FPS) reveal a system that is heavily GPU-limited at high resolutions but becomes increasingly CPU-bound as resolution drops. The data shows a wide gulf between the Low and Ultra presets, indicating that users have substantial control over their experience, but the specific numbers suggest that the 6-core processor is the limiting factor in the most demanding scenarios at 1080p.

Resolution Scaling

The FPS data demonstrates a classic resolution scaling curve, but with a notable twist specific to this flight simulator. Moving from 1920x1080 to 2560x1440 on the High preset sees the average frame rate drop from 94.8 FPS to 75.4 FPS, a significant 19.4 FPS reduction. The jump to 3840x2160 High is even more punishing, with the average plummeting to 53.8 FPS, representing a 41 FPS loss from the 1080p figure. This steep decline indicates that the RTX 3080 Ti is being pushed to its limits at 4K, with the pixel throughput demands of the simulator's complex scenery overwhelming the GPU's 34.10 TFLOPS of compute power.

However, the scaling pattern changes dramatically when looking at the Low preset. At 1080p Low, the system produces 158.5 FPS, which is an exceptionally high number for this title. When scaled to 1440p, the frame rate only drops to 132 FPS, and at 4K it remains a very playable 95.6 FPS. The percentage drop from 1080p to 4K on Low is roughly 39.7%, which is far less severe than the 43.2% drop seen on High. This suggests that at Low settings, the CPU is becoming a more significant factor, as the GPU has enough headroom to render frames quickly, but the Intel Core i5-11400F's 6 cores and 12 threads struggle to feed the graphics card with enough draw calls and simulation data to maintain the same relative performance scaling.

The Ultra preset tells a similar story to High, with a 74.3 FPS average at 1440p and a 51.1 FPS average at 4K. The gap between High and Ultra at 4K is just 2.7 FPS, while at 1080p it is 6.4 FPS. This narrowing gap at higher resolutions suggests that the visual difference between High and Ultra is less impactful on the GPU's load than the raw resolution increase. The data indicates that if you are targeting 4K, the CPU is less of a concern, and the RTX 3080 Ti's 12 GB of GDDR6X memory and 912.4 GB/s bandwidth are the primary drivers of performance, but at 1080p, the processor's 2.60 GHz base clock and limited L3 cache become apparent.

FAQ

Q: What is the best resolution to play at with this combo?

A: Based on the data, 2560x1440 on High offers the best balance, delivering 75.4 FPS. While 1920x1080 High hits 94.8 FPS, the visual fidelity gain at 1440p is substantial, and the system still maintains a frame rate well above 60 FPS.

Q: Is this CPU or GPU bottlenecked in Microsoft Flight Simulator?

A: The bottleneck shifts depending on settings. At 4K Ultra, the system only manages 51.1 FPS, indicating a clear GPU limitation. However, at 1080p Low, the 158.5 FPS result suggests the CPU is the limiting factor, as a more powerful processor would likely push this number even higher.

Q: How much performance is lost when going from 1080p to 4K on Medium settings?

A: The average frame rate drops from 126.2 FPS at 1920x1080 to 101.9 FPS at 2560x1440, and finally to 77.2 FPS at 3840x2160. This represents a total loss of 49 FPS, or about 38.8% of the 1080p performance.

Q: Can this system handle 4K gaming?

A: Yes, but with compromises. On High and Ultra presets, the system averages 53.8 FPS and 51.1 FPS respectively, which are playable but not smooth for a fast-paced sim. Dropping to Medium yields a more comfortable 77.2 FPS, and Low pushes it to 95.6 FPS.

Q: How does the CPU's thread count affect the game?

A: The Intel Core i5-11400F has 6 cores and 12 threads. The benchmark data shows that at lower resolutions, where the GPU is less stressed, the frame rates are high but likely capped by the CPU's ability to process the simulation's physics and AI logic, rather than the GPU's rendering speed.

Q: Is there a big difference between High and Ultra settings?

A: The data shows a minimal difference at 4K, with only 2.7 FPS separating the two presets (53.8 vs 51.1). The difference is slightly larger at 1080p, where High gets 94.8 FPS and Ultra gets 88.4 FPS, a 6.4 FPS gap.

How This Combo Ranks

In the grand scheme of tested hardware combinations, this system ranks at position 506 out of 1795 combos for Microsoft Flight Simulator. This places it in the top 28.2% of all tested configurations, which is a respectable position given the game's demanding nature. The rank is heavily influenced by the CPU's overall performance metrics, as the GPU is a top-tier part. The CPU's average benchmark score of 17181 places it in the 75th percentile of all CPUs, which is solid, but it is not a flagship part.

The nearest rivals to the i5-11400F in synthetic benchmarks are the AMD Ryzen 7 5700U with an average score of 17189 (a 0% delta), the Intel Core i7-1260P at 17212 (a -0.2% delta), and the Intel Core Ultra 7 164U at 17215 (a -0.2% delta). These scores are nearly identical, meaning the 11400F is effectively on par with those mobile-oriented processors in general compute, but in a flight simulator, the desktop platform's sustained power delivery and memory bandwidth may give it an edge. The GPU, on the other hand, sits in the 83rd percentile of all GPUs, with its average score of 41224 being just 0.5% behind the RTX 3090's 41441. This high GPU ranking is what propels the combo up the charts, but the 506th overall rank indicates that the CPU is holding the system back from the top echelons of performance.

Measured FPS Breakdown

The dataset provides a clear matrix of performance across three resolutions and four settings presets. At 1920x1080, the system delivers an average of 158.5 FPS on Low, 126.2 FPS on Medium, 94.8 FPS on High, and 88.4 FPS on Ultra. These numbers show a wide spread, with the Low preset being nearly 80% faster than Ultra. This indicates that at 1080p, the user has immense flexibility to prioritize frame rate or visual quality.

Moving to 2560x1440, the averages are 132 FPS on Low, 101.9 FPS on Medium, 75.4 FPS on High, and 74.3 FPS on Ultra. The gap between High and Ultra narrows considerably at this resolution, suggesting that the GPU is beginning to saturate. The drop from Low to Medium is 30.1 FPS, which is a significant hit, but the jump from Medium to High is 26.5 FPS, showing that each preset tier has a noticeable cost.

At 3840x2160, the system produces 95.6 FPS on Low, 77.2 FPS on Medium, 53.8 FPS on High, and 51.1 FPS on Ultra. The 4K results are the most telling. The Low preset remains very playable, but the High and Ultra presets dip below the 60 FPS threshold, which is often considered the minimum for a smooth experience. The data shows that the RTX 3080 Ti is powerful enough to handle 4K, but only when the CPU is not the limiting factor and the settings are kept in check.

Settings Recommendations

For a 1080p display, the High preset at 94.8 FPS is the sweet spot, offering a great balance of visual fidelity and smoothness. If you have a high-refresh-rate monitor, the Medium preset at 126.2 FPS is a better choice, as it provides a substantial frame rate boost with only a moderate reduction in detail. The Ultra preset at 88.4 FPS is not worth the performance cost, as the visual gains over High are likely minimal in the air.

For 1440p, the High preset at 75.4 FPS is the recommended starting point. It provides a smooth, immersive experience. If you prefer maximum visual quality and your monitor supports adaptive sync, the Ultra preset at 74.3 FPS is viable, as the difference from High is only 1.1 FPS. The Medium preset at 101.9 FPS is excellent for competitive or high-refresh-rate play, but the Low preset at 132 FPS is likely to look too sparse for a flight sim, where ground detail is important.

For 4K, the Medium preset at 77.2 FPS is the best choice for a playable experience with decent visuals. The High preset at 53.8 FPS is borderline, but it may be acceptable for slower, sightseeing flights. The Ultra preset at 51.1 FPS should be avoided unless you are taking screenshots. The Low preset at 95.6 FPS provides the smoothest 4K experience, but the lack of detail may detract from the simulation's purpose. The data clearly shows that the Medium preset is the most balanced option for 4K.

CPU Role

The Intel Core i5-11400F is a 6-core, 12-thread processor from the Rocket Lake architecture, built on a 14 nm process. It has a base clock of 2.60 GHz and a boost clock of 4.40 GHz, with a 12 MB shared L3 cache. Its performance in this game is telling. The CPU's single-thread performance, as measured by a 3dmark single-thread score of 868 and a Cinebench R23 single-core score of 2029, is adequate, but not class-leading. In a simulation like Microsoft Flight Simulator, which heavily relies on a single main thread for the core simulation loop, this limits the maximum achievable frame rate.

The data shows that at 1080p Low, the system hits 158.5 FPS, a figure that many CPUs would struggle to achieve. However, the fact that the frame rate does not scale perfectly with the GPU's capabilities suggests the CPU is the cap. The 3dmark 16-thread score of 5619 and the Cinebench R23 multicore score of 14372 indicate that the processor has decent multi-threaded throughput, which helps with the game's use of additional threads for terrain loading and AI traffic. The 65 W TDP and the 51.2 GB/s memory bandwidth are sufficient for this workload, but the 4.40 GHz boost clock is not particularly high. The result is a system that is remarkably fast, but the CPU's performance ceiling is clearly visible in the lower-resolution data, preventing the RTX 3080 Ti from reaching its full potential.