Microsoft Flight Simulator

Microsoft Flight Simulator is a notoriously demanding title, and this particular pairing of the Intel Core i9-14900K with the AMD Radeon RX 580 produces a very specific bottleneck profile. The data shows a system where the CPU is massively overqualified for the task, while the GPU is the definitive limiting factor across all resolutions. The benchmark results indicate that users should focus entirely on graphics settings and resolution to achieve playable frame rates, as the processor is effectively idle in comparison to the graphics card's workload.

CPU Role — cores, clocks, and how they relate to this game's results

The Intel Core i9-14900K is a 24-core, 32-thread processor based on the Raptor Lake architecture, with a base clock of 3.20 GHz and a boost clock of 6.00 GHz. It features a substantial cache hierarchy, including 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. This is a desktop-class CPU that sits in the 95th percentile of all processors, indicating it is among the most powerful consumer chips available. Its average benchmark score of 79097 places it in a dead heat with the Intel Core i9-14900KF, which scores 79371 (a negligible 0.3% difference), and it is actually 1.7% ahead of the AMD Ryzen AI Max+ 395, which scores 77740.

However, in Microsoft Flight Simulator, the CPU's raw power is not the primary driver of performance. The measured FPS data shows a clear pattern: at 1080p with Low settings, the system achieves 54 FPS, but this is the absolute ceiling. When you look at the 4K results, the FPS drops to 32 FPS at Low settings and 19 FPS at High. These numbers are far below what the i9-14900K is capable of producing in other scenarios. The processor's single-thread performance, as evidenced by a Cinebench R23 single-core score of 2262.5 and a Geekbench single-core score of 2655, is more than sufficient to handle the simulation's physics and flight model calculations. The bottleneck is not the CPU's ability to feed frames; it is the GPU's ability to render them.

The fact that the frame rates barely improve when moving from 1440p to 1080p further confirms this. For example, at Ultra settings, the system gets 24 FPS at 1440p and 30 FPS at 1080p. If the CPU were the limiting factor, we would see a much larger jump in performance at lower resolutions where the CPU has to do relatively more work. Instead, the performance scales with resolution in a way that points squarely at the GPU. The i9-14900K's 32 threads and high clock speeds are essentially going unused, as the RX 580 cannot produce enough frames to stress the CPU. This is a classic case of a CPU that will provide headroom for future GPU upgrades, but offers no tangible benefit to the current frame rates in this specific configuration.

Settings Recommendations — which preset gives the best experience per the measured rows

Given the data, there is a clear trade-off between visual fidelity and playability. The most significant finding is that the jump from Low to Medium settings has a relatively modest performance cost compared to the jump from Medium to High. At 1080p, the system achieves 54 FPS at Low, 42 FPS at Medium, and 31 FPS at High. The difference between Low and Medium is 12 FPS, while the difference between Medium and High is 11 FPS. However, the visual improvement from Low to Medium is typically far more substantial in a flight simulator, where terrain detail and object density are critical.

For a playable experience, Medium settings at 1080p is the recommended starting point. The measured 42 FPS average, with a minimum of 36 FPS and a maximum of 48 FPS, provides a relatively stable frame rate that is acceptable for a simulation title, where smoothness is often prioritized over high refresh rates. The 36 FPS minimum is still above the threshold where stuttering becomes a major issue. Moving to High settings drops the average to 31 FPS, which is noticeably less smooth and may cause issues when panning the camera or flying over dense urban areas. Ultra settings at 1080p yield only 30 FPS, which is not a worthwhile trade for the marginal visual gain over High.

At 1440p, the situation becomes more constrained. The Medium preset delivers 34 FPS, which is still playable but with less headroom. The Low preset at 1440p delivers 43 FPS, which is the most responsive option at this resolution. The data suggests that if you are using a 1440p monitor, you should stick to Low or Medium settings. The High and Ultra presets at 1440p (25 FPS and 24 FPS, respectively) are too demanding for the RX 580 to maintain a consistent frame rate. For 4K, none of the presets are truly playable, with the highest being Low at 32 FPS. The recommendation is to use Medium at 1080p as the primary target, as it offers the best balance of visual quality and performance based on the measured rows.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The resolution scaling data is the clearest indicator of the system's bottleneck. At Low settings, the system produces 54 FPS at 1080p, 43 FPS at 1440p, and 32 FPS at 4K. This represents a 20% drop from 1080p to 1440p, and a further 26% drop from 1440p to 4K. At Medium settings, the numbers are 42 FPS (1080p), 34 FPS (1440p), and 25 FPS (4K), showing a similar proportional decline. This scaling pattern is characteristic of a GPU-bound scenario, where the rendering resolution directly impacts the pixel fill rate and memory bandwidth requirements.

The RX 580 has 8 GB of GDDR5 memory on a 256-bit bus, providing 256.0 GB/s of bandwidth. This is a modest amount by modern standards, and the 4K resolution is particularly punishing. The data shows that the gap between 1080p and 4K is roughly 40-50% across all settings, which is a substantial loss. If the i9-14900K were the limiting factor, we would expect the frame rates at 1080p and 4K to be much closer together, as the CPU's workload (draw calls, physics) does not scale linearly with resolution in the same way the GPU's does.

The fact that the 4K Ultra preset manages only 18 FPS, while 4K Low gets 32 FPS, highlights that the GPU's shading units (2304) and texture units (144) are being overwhelmed. The GPU's pixel rate of 42.88 GPixel/s and texture rate of 193.0 GTexel/s are simply not sufficient to handle the demands of 4K in a game with dense scenery. This analysis confirms that any attempt to improve performance must focus on reducing the GPU load, either by lowering the resolution or by reducing the graphics preset. The CPU is not the constraint here, and its performance headroom is entirely untapped in this configuration.

FAQ — 4-6 Q&A pairs answerable from FACT PACK data

Q: Is the Intel Core i9-14900K being fully utilized in this game?

A: No. The benchmark data shows that the frame rates are consistently low across all resolutions, which indicates a GPU bottleneck. The CPU's high benchmark scores (e.g., 39399.5 in Cinebench R23 multi-core) suggest it has far more capability than what is being used. The performance scaling with resolution points to the GPU, not the CPU, as the limiting factor.

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

A: Based on the measured FPS, 1920x1080 is the only resolution where a playable frame rate can be achieved on higher presets. At 1080p Medium, the system averages 42 FPS. At 1440p, the best playable option is Low at 43 FPS, but the quality sacrifice is significant. 4K is not recommended, as even Low settings only yield 32 FPS.

Q: How does the RX 580 compare to its closest rivals in raw performance?

A: The RX 580 has an average benchmark score of 12928, placing it in the 53rd percentile of all GPUs. It is essentially tied with the NVIDIA GeForce RTX 3050 Ti Mobile, which scores 12940 (a 0.1% difference). It is also within 0.4% of the NVIDIA GeForce GTX 1660 SUPER, which scores 12986. This means its performance is very much in line with those mid-range cards.

Q: Is there a significant difference between the Low and Ultra presets in terms of FPS?

A: Yes, the difference is substantial. At 1080p, the Low preset averages 54 FPS, while the Ultra preset averages 30 FPS. This is a 24 FPS drop, or a 44% reduction in performance. The same trend is seen at 1440p and 4K, where Ultra settings are nearly unplayable, while Low settings offer a much smoother experience.

Q: What does the combo rank tell us about this pairing?

A: The combination of the i9-14900K and RX 580 ranks 3376 out of 3714 tested combos in this game. This places it in the bottom 10% of all pairings, which is a direct result of the GPU being a severe bottleneck. The CPU's power is wasted, as the GPU cannot keep up with its frame generation potential.

Q: Is the RX 580's 8 GB of VRAM sufficient for this game?

A: The data suggests that the GPU's overall compute power is the limiting factor, not just the VRAM capacity. The 8 GB of VRAM is standard for its class, but the GPU's 6.175 TFLOPS of FP32 performance and 256.0 GB/s of memory bandwidth are insufficient for high presets at higher resolutions, as evidenced by the sharp FPS drops at 4K.

GPU Role — VRAM, clocks, and how they relate to this game's results

The AMD Radeon RX 580 is an end-of-life GPU based on the Polaris 20 chip and GCN 4.0 architecture, manufactured on a 14 nm process. It has a base clock of 1257 MHz and a boost clock of 1340 MHz, with 8 GB of GDDR5 memory running at 2000 MHz (8 Gbps effective) on a 256-bit bus. This configuration provides a memory bandwidth of 256.0 GB/s. The card features 2304 shading units, 144 texture mapping units, and 32 raster output units, which are the core components that determine its rendering capabilities.

In Microsoft Flight Simulator, the RX 580's performance is underwhelming, but consistent with its hardware specifications. The GPU's 6.175 TFLOPS of FP32 compute power is simply not enough to handle the complex lighting, shadows, and terrain rendering at higher presets. The benchmark results show that the card struggles to maintain playable frame rates even at 1080p with High settings, averaging only 31 FPS. The card's passmark G3D score of 8813 and its 53rd percentile ranking among all GPUs place it firmly in the lower-mid range of performance.

The GPU's memory subsystem is also a factor. While 8 GB of VRAM is adequate for 1080p, the 256.0 GB/s bandwidth becomes a bottleneck at 4K resolution. The data shows a 41% drop in FPS from 1080p Low (54 FPS) to 4K Low (32 FPS), which is a direct result of the memory and pixel throughput limitations. The GPU's nearest rivals, such as the NVIDIA GeForce GTX 1660 SUPER (with a 0.4% difference in score), perform similarly, confirming that the RX 580 is a legacy part that is not well-suited for a modern, demanding simulator like this one. Its end-of-life production status and the fact that its successor is listed as Vega further emphasize that it is not a future-proof solution for this title.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The following table presents the exact measured average FPS data for the Intel Core i9-14900K and AMD Radeon RX 580 combination in Microsoft Flight Simulator. The data is presented across all three resolutions and four quality presets.

1920x1080 (1080p)

• Low: 54 FPS average
• Medium: 42 FPS average (minimum 36, maximum 48)
• High: 31 FPS average
• Ultra: 30 FPS average

At 1080p, the system is most capable. The Low preset provides a smooth experience, while Medium offers a good balance. The step from Medium to High results in an 11 FPS loss, which is significant. The Ultra preset at 30 FPS is identical to High in performance, suggesting a ceiling has been reached.

2560x1440 (1440p)

• Low: 43 FPS average
• Medium: 34 FPS average (minimum 29, maximum 39)
• High: 25 FPS average
• Ultra: 24 FPS average

At 1440p, the GPU begins to struggle. The Low preset remains playable, but Medium dips to 34 FPS. High and Ultra are both in the low-to-mid 20s, which is not suitable for a smooth experience. The data shows that 1440p requires a significant reduction in settings to be usable.

3840x2160 (4K)

• Low: 32 FPS average
• Medium: 25 FPS average (minimum 21, maximum 29)
• High: 19 FPS average
• Ultra: 18 FPS average

At 4K, the system is entirely GPU-bound and the performance is poor across the board. Even the Low preset only manages 32 FPS, which is not smooth enough for most users. The High and Ultra presets are effectively unplayable, with frame rates in the teens. This data confirms that 4K is not a viable option for this hardware combination.

In summary, the measured FPS breakdown shows a clear hierarchy: 1080p is the only resolution where a playable experience can be found, and even then, only at Low or Medium settings. The performance drop from 1080p to 1440p is approximately 20%, and the drop from 1440p to 4K is another 25-30%, which is a direct result of the RX 580's limited fill rate and memory bandwidth.