Microsoft Flight Simulator

The Intel Core i9-14900K and NVIDIA GeForce RTX 5090 D pairing produces a top-tier result in Microsoft Flight Simulator, ranking 5th out of 2996 tested combinations. This places the combo in the 99th percentile of all systems tested, delivering frame rates that range from 84 FPS at 4K Ultra to 248 FPS at 1080p Low. The data shows a system with substantial headroom across all resolutions, though the scaling patterns reveal specific bottlenecks that shift depending on the settings and resolution selected.

Resolution Scaling

The measured frame rates show a predictable decline as resolution increases, but the magnitude of that decline varies significantly by settings preset. At Low settings, the drop from 1080p to 4K is steep: 248 FPS at 1920x1080 falls to 205 FPS at 2560x1440, then to 151 FPS at 3840x2160. That represents a 39% reduction from 1080p to 4K, indicating that even at Low settings the GPU is becoming a more significant factor at higher resolutions. The RTX 5090 D, with its 32 GB of GDDR7 memory and 1.79 TB/s bandwidth, still manages to keep frame rates above 150 FPS even at 4K Low, which suggests the CPU is doing most of the work at lower resolutions.

Moving to Medium settings, the scaling becomes more linear. The 1080p result of 198 FPS drops to 159 FPS at 1440p, then to 118 FPS at 4K. That is a 40% overall reduction from 1080p to 4K, nearly identical to the Low preset's scaling. The minimum FPS values at Medium settings are telling: 168 FPS at 1080p, 136 FPS at 1440p, and 100 FPS at 4K. These minimums track closely with the averages, suggesting consistent frame pacing rather than occasional stutters.

At High settings, the scaling pattern shifts. The 1080p average of 149 FPS drops to 120 FPS at 1440p, then to 88 FPS at 4K. That is a 41% reduction from 1080p to 4K, but the absolute values are lower across the board. The Ultra preset shows the most dramatic scaling: 142 FPS at 1080p, 114 FPS at 1440p, and 84 FPS at 4K. The 4K Ultra result is only 59% of the 1080p Ultra figure, demonstrating that the highest settings place the heaviest load on the GPU.

The data indicates that at 1080p, the system is primarily CPU-limited. The Intel Core i9-14900K, with its 24 cores and 32 threads, delivers 248 FPS at Low settings, but that drops to 142 FPS at Ultra — a 43% reduction that shows the GPU becoming more relevant as settings increase. At 4K, the GPU is clearly the dominant factor, with the RTX 5090 D's 104.8 TFLOPS of FP32 performance being pushed harder. The gap between Low and Ultra at 4K is 67 FPS, compared to 106 FPS at 1080p, confirming that resolution scaling increasingly taxes the GPU.

CPU Role

The Intel Core i9-14900K is a Raptor Lake Refresh part built on Intel's 10 nm process, featuring 24 cores and 32 threads. Its base clock of 3.20 GHz boosts up to 6.00 GHz, which is crucial for a flight simulator that relies heavily on single-thread performance for physics and flight model calculations. The CPU's 36 MB of shared L3 cache and 2 MB per-core L2 cache provide the memory hierarchy needed to feed data to the GPU without stalling.

Benchmark data shows the i9-14900K scoring 2262.5 in Cinebench R23 single-core and 39399.5 in multi-core. The single-core score is particularly relevant for Microsoft Flight Simulator, which is known for its dependency on strong single-thread performance. The CPU achieves a PassMark single-thread score of 4697, placing it in the 95th percentile of all CPUs. Its nearest rival, the Intel Core i9-14900KF, scores 79371 on average — just 0.3% higher — indicating that the non-F version is virtually identical in performance.

The high boost clock of 6.00 GHz is the key enabler for the frame rates seen at 1080p. At Low settings, the system reaches 248 FPS, which is likely near the CPU's maximum achievable frame rate in this game. The data shows that increasing resolution from 1080p to 1440p at Low settings reduces FPS from 248 to 205, a 17% drop that is smaller than the 26% drop seen from 1440p to 4K. This pattern suggests the CPU can maintain high frame rates even as the GPU load increases, but eventually the GPU becomes the limiting factor.

The i9-14900K's 125 W TDP and unlocked multiplier allow for sustained performance, and its Cinebench R20 multi-core score of 20793 indicates strong all-core capability. However, in this game, the single-thread performance is more important. The Geekbench single-core score of 2655 and PassMark single-thread score of 4697 both place this CPU well above average, which directly translates to the high frame rates observed at lower resolutions.

GPU Role

The NVIDIA GeForce RTX 5090 D is a Blackwell 2.0 architecture GPU built on TSMC's 5 nm process, featuring 21,760 shading units and 170 RT cores. Its 32 GB of GDDR7 memory on a 512-bit bus provides 1.79 TB/s of bandwidth, which is essential for streaming the vast terrain and scenery data that Microsoft Flight Simulator loads continuously. The GPU's base clock of 2017 MHz boosts to 2407 MHz, and its 104.8 TFLOPS of FP32 performance places it among the most powerful consumer GPUs available.

The RTX 5090 D's benchmarks show a 3DMark Steel Nomad DX12 score of 14326 and a PassMark G3D score of 44065, placing it in the 92nd percentile of all GPUs. Its nearest rivals include the AMD Radeon RX 6850M XT, which scores 78940 on average — 1.6% lower — and the NVIDIA Tesla P100 PCIe 12 GB, which scores 79396 — 2.1% lower. Interestingly, the RTX 5090 D's average benchmark score of 77712 is lower than some of its rivals in synthetic tests, but the measured FPS in this game tells a different story.

The GPU's role becomes increasingly dominant as resolution and settings increase. At 4K Ultra, the system produces 84 FPS, which is the lowest measured result. The 4K Medium result of 118 FPS with a minimum of 100 FPS shows that the GPU can maintain playable frame rates even under heavy load. The 1.79 TB/s memory bandwidth is particularly important for this game, as it needs to load high-resolution textures for terrain, aircraft, and weather effects.

The RTX 5090 D's 575 W TDP and dual-slot design indicate a power-hungry part, but the measured results show that it delivers the performance to justify that power draw. At 1080p, the GPU is not the limiting factor — the CPU is — but at 4K, the GPU's capabilities are fully utilized. The scaling from 1080p Low (248 FPS) to 4K Low (151 FPS) shows a 39% drop, which is less severe than the drop from 1080p Ultra (142 FPS) to 4K Ultra (84 FPS) at 41%. This suggests that the GPU handles lower settings more efficiently relative to the CPU, but at higher settings, the GPU's raw compute power becomes the bottleneck.

How This Combo Ranks

The combination of Intel Core i9-14900K and NVIDIA GeForce RTX 5090 D ranks 5th out of 2996 tested combos in Microsoft Flight Simulator. This puts the system in the top 0.17% of all tested configurations, a remarkable achievement for a desktop pairing. The CPU's percentile of 95 and the GPU's percentile of 92 both contribute to this high ranking, but the synergy between the two components is what boosts the combo to 5th place.

The CPU's nearest rivals include the Intel Core i9-14900KF at 79371 average score (0.3% higher) and the Intel Core Ultra 9 290HX Plus at 79574 (0.6% higher). These are all within a narrow performance band, indicating that the i9-14900K is near the top of the CPU hierarchy. The AMD Ryzen AI Max+ 395 scores 77740, which is 1.7% lower, showing that Intel's 14th Gen flagship holds its own against newer competition.

The GPU's nearest rivals are less intuitive. The AMD Radeon RX 6850M XT scores 78940 on average, which is 1.6% higher than the RTX 5090 D's 77712. The Tesla P100 variants also score slightly higher in synthetic benchmarks. However, the measured FPS in Microsoft Flight Simulator shows the RTX 5090 D performing exceptionally well, suggesting that this game favors the GPU's architecture and driver optimizations.

The rank of 5th out of 2996 combos is particularly impressive given that the RTX 5090 D's average benchmark score is lower than some rivals. This discrepancy highlights the importance of real-world game testing over synthetic benchmarks. The 4K Ultra result of 84 FPS is above the 60 FPS threshold commonly considered playable, and the 1080p Low result of 248 FPS demonstrates the system's ability to drive high-refresh-rate displays.

Settings Recommendations

The measured data provides clear guidance for optimal settings based on resolution. At 1080p, the High preset delivers 149 FPS, which is more than sufficient for smooth gameplay. The Ultra preset at 1080p produces 142 FPS, only 5% lower than High, making Ultra the better choice for visual fidelity without significant performance loss. The Medium preset at 1080p yields 198 FPS, which is ideal for competitive play or high-refresh-rate monitors, but the visual difference between Medium and High may not justify the 49 FPS drop for most users.

At 1440p, the Medium preset delivers 159 FPS with a minimum of 136 FPS, providing a balanced experience. The High preset at 1440p produces 120 FPS, which is still smooth but shows a 25% reduction from Medium. The Ultra preset at 1440p yields 114 FPS, making it the best choice for visual quality while maintaining playable frame rates. The Low preset at 1440p hits 205 FPS, but the visual compromise is significant for a flight simulator where terrain detail and cockpit readability matter.

At 4K, the Medium preset is the sweet spot, delivering 118 FPS with a minimum of 100 FPS. This provides a smooth experience with good visual quality. The High preset at 4K produces 88 FPS, which is playable but begins to dip below the 90 FPS threshold for high refresh rates. The Ultra preset at 4K yields 84 FPS, and while this is still above 60 FPS, the difference between High and Ultra is only 4 FPS, making High the better choice. The Low preset at 4K hits 151 FPS, but the visual quality is notably reduced.

For most users, the data suggests using Medium settings at 4K, High settings at 1440p, and Ultra settings at 1080p. These choices provide the best balance between visual fidelity and frame rate based on the measured results. The minimum FPS values at Medium settings (100 FPS at 4K, 136 FPS at 1440p, 168 FPS at 1080p) indicate that this preset maintains consistent performance without significant frame drops.

Measured FPS Breakdown

At 1920x1080, the system delivers 248 FPS at Low settings, 198 FPS at Medium (with a minimum of 168 and maximum of 227), 149 FPS at High, and 142 FPS at Ultra. The spread from Low to Ultra is 106 FPS, showing that settings have a substantial impact at this resolution. The Medium preset's minimum of 168 FPS indicates solid frame pacing, while the maximum of 227 FPS shows headroom in lighter scenes.

At 2560x1440, the results are 205 FPS at Low, 159 FPS at Medium (minimum 136, maximum 183), 120 FPS at High, and 114 FPS at Ultra. The drop from Low to Medium is 46 FPS, which is the largest single-step reduction at this resolution. The minimum FPS at Medium (136) is still well above 60 FPS, confirming smooth gameplay. The High and Ultra results are close, with only 6 FPS separating them.

At 3840x2160, the system produces 151 FPS at Low, 118 FPS at Medium (minimum 100, maximum 135), 88 FPS at High, and 84 FPS at Ultra. The 4K results show the GPU being pushed harder, with the gap between Low and Ultra being 67 FPS. The Medium preset's minimum of 100 FPS is notable, as it maintains a triple-digit frame rate even in demanding scenes. The Ultra preset's 84 FPS is the lowest measured result but remains above the 60 FPS playability threshold.

FAQ

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

A: The data shows that 1440p Medium delivers 159 FPS with a minimum of 136 FPS, providing a strong balance. At 4K, Medium achieves 118 FPS with a minimum of 100 FPS. For maximum visual quality, 4K Ultra produces 84 FPS, which is still playable.

Q: How does this combo rank against other tested systems?

A: The Intel Core i9-14900K and RTX 5090 D ranks 5th out of 2996 tested combos in Microsoft Flight Simulator, placing it in the top 0.17% of all configurations tested.

Q: Is the CPU or GPU the limiting factor at 1080p?

A: At 1080p Low, the system reaches 248 FPS, indicating the CPU is the primary limiter. The i9-14900K's 6.00 GHz boost clock and 2262.5 Cinebench R23 single-core score drive these high frame rates, while the GPU has headroom.

Q: What settings provide the best experience at 4K?

A: Medium settings at 4K deliver 118 FPS with a minimum of 100 FPS, making it the best choice. High settings produce 88 FPS, which is still smooth, while Ultra drops to 84 FPS — only a 4 FPS difference from High.

Q: How does the RTX 5090 D compare to its nearest rivals in synthetic benchmarks?

A: The RTX 5090 D scores 77712 on average, which is 1.1% higher than the AMD Radeon RX 6650M XT at 76904, but 1.6% lower than the RX 6850M XT at 78940. The Tesla P100 PCIe 12 GB scores 79396, 2.1% higher.

Q: Does the combo maintain consistent frame rates at Medium settings?

A: Yes. At 4K Medium, the minimum FPS is 100 with an average of 118. At 1440p Medium, the minimum is 136 with an average of 159. At 1080p Medium, the minimum is 168 with an average of 198, showing consistent performance across all resolutions.