Microsoft Flight Simulator

# How This Combo Ranks

The Intel Core i9-14900K paired with the NVIDIA GeForce RTX 4080 lands at rank 215 out of 3,714 tested combos in Microsoft Flight Simulator. This places the combination in the top 5.8% of all systems benchmarked, a strong showing that reflects the high-end nature of both components. The data indicates this is a top-tier pairing for flight simulation, though it is not the absolute fastest — there are 214 other combinations that deliver higher average frame rates in this specific title.

The CPU's percentile ranking among all processors is 95, meaning it outperforms 95% of all CPUs in the database. The GPU sits at the 86th percentile among all graphics cards. When combined, these two components produce a system that is clearly optimized for demanding workloads like Microsoft Flight Simulator, which is known for its heavy reliance on both single-threaded CPU performance and GPU rendering capabilities.

Compared to its nearest CPU rivals, the i9-14900K shows a marginal delta of -0.3% versus the Intel Core i9-14900KF, and -0.6% against the Intel Core Ultra 9 290HX Plus. It trails the AMD EPYC 7413 by 1.2% but leads the AMD Ryzen AI Max+ 395 by 1.7%. These are small margins, indicating that the CPU choice within this performance tier has minimal impact on overall results in this game. For the GPU, the RTX 4080 is essentially tied with the RTX 4080 SUPER (0.1% delta), while it leads the AMD Radeon Pro W5700X by 1.1%, the AMD Radeon RX 6750 GRE 12 GB by 2.6%, and the AMD Radeon 8060S by 2.7%. The close margins suggest that the RTX 4080 sits at a sweet spot where small performance differences are within the noise of real-world testing.

The combo rank of 215 is impressive given that the database contains thousands of combinations, including many with newer or more expensive hardware. The fact that this pairing sits comfortably in the top tier means users can expect high frame rates across most settings and resolutions, with only the most demanding configurations (4K Ultra) pushing the system to its limits.

# GPU Role

The NVIDIA GeForce RTX 4080 is built on the Ada Lovelace architecture using a 5 nm process at TSMC, with a transistor count of 45,900 million on a 379 mm² die. It carries 16 GB of GDDR6X memory across a 256-bit bus, delivering 716.8 GB/s of bandwidth. The memory clock runs at 1400 MHz, which translates to 22.4 Gbps effective. These specifications provide ample memory capacity and bandwidth for Microsoft Flight Simulator's large textures and detailed scenery, which can consume significant VRAM at high resolutions.

The GPU's base clock is 2205 MHz with a boost clock of 2505 MHz. The boost clock is particularly relevant for sustained performance during flight simulation, where long rendering sessions can cause thermal throttling on lesser cards; the RTX 4080's boost behavior keeps frame rates stable. With 9,728 shading units, 304 texture mapping units, and 112 raster output units, the card is well-equipped to handle the complex geometry and lighting of the simulator's cockpit views and terrain rendering. The 76 ray tracing cores and 304 tensor cores add support for advanced effects, though Microsoft Flight Simulator relies more on traditional rasterization than heavy ray tracing.

The measured FPS data shows the GPU's scaling with settings. At 4K, the RTX 4080 delivers 73 FPS on High, 97 FPS on Medium, 125 FPS on Low, and 70 FPS on Ultra. The drop from Medium to Ultra is 27 FPS (from 97 to 70), while the jump from Low to Medium is 28 FPS (from 125 to 97). This pattern indicates that the GPU is the primary driver of performance at 4K, with each settings tier imposing a measurable cost. The 16 GB VRAM is sufficient for all tested settings at 4K, as no memory-related stutters or minimum FPS drops are evident in the data — the only min FPS values reported are at Medium (83 at 4K), which are still respectable.

# FAQ

Q: Is the Intel Core i9-14900K + RTX 4080 combo suitable for 4K gaming in Microsoft Flight Simulator?

A: Yes. The data shows 73 FPS at 4K High and 70 FPS at 4K Ultra, both of which are playable for a flight simulator where frame rates above 60 are generally considered smooth. Even at 4K Ultra, the system maintains a playable average, though users seeking higher headroom may prefer lower settings or a more powerful GPU.

Q: How does the RTX 4080 compare to its closest rival, the RTX 4080 SUPER?

A: The benchmark data shows a delta of 0.1% between the two, meaning the RTX 4080 and RTX 4080 SUPER perform essentially identically in aggregate benchmarks. This indicates that the standard RTX 4080 is not meaningfully slower than its SUPER counterpart, so there is little reason to prefer one over the other based on performance alone.

Q: What is the CPU's single-thread performance relative to its multi-thread performance?

A: The i9-14900K scores 2,262.5 in Cinebench R23 single-core and 39,399.5 in multi-core, a ratio of roughly 17.4x. This reflects the CPU's 24 cores and 32 threads, which provide massive parallel throughput while maintaining strong single-core speed (6.00 GHz boost clock) that is critical for Microsoft Flight Simulator's simulation logic.

Q: Does the GPU's memory bandwidth limit performance at 1440p?

A: No. At 1440p, the RTX 4080 delivers 99 FPS on High and 95 FPS on Ultra, with the Medium preset at 132 FPS (min 112, max 152). The 716.8 GB/s bandwidth is sufficient for these frame rates, as the FPS scaling from 1080p to 1440p is consistent with GPU-bound rendering rather than memory limitations.

Q: How does the CPU's performance in Cinebench R23 multi-core compare to single-core?

A: The multi-core score of 39,399.5 is 17.4 times higher than the single-core score of 2,262.5. This is a strong scaling factor, indicating the CPU effectively utilizes its 24 cores for parallel workloads, though Microsoft Flight Simulator primarily benefits from the strong single-core performance.

Q: What is the GPU's average benchmark score across all tests?

A: The RTX 4080 has an average benchmark score of 54,247 across its suite of tests, which places it at the 86th percentile among all GPUs. This score is derived from tests including 3DMark Steel Nomad (6,567), Geekbench OpenCL (214,739), and Passmark G3D (34,457), among others.

# Measured FPS Breakdown

At 1080p, the combo delivers 211 FPS on Low, 164 FPS on Medium (min 139, max 188), 123 FPS on High, and 117 FPS on Ultra. These numbers are exceptionally high, far exceeding the 60 FPS target most users would consider smooth. The gap between Low and Ultra is 94 FPS, indicating that the GPU has ample headroom at this resolution and is not the limiting factor — the CPU's strong single-thread performance (6.00 GHz boost, 2,262.5 Cinebench R23 single-core) likely plays a significant role in achieving these high frame rates.

Moving to 1440p, the average FPS drops to 170 on Low, 132 on Medium (min 112, max 152), 99 on High, and 95 on Ultra. The scaling from 1080p to 1440p shows a reduction of 41 FPS at Low (from 211 to 170), 32 FPS at Medium (from 164 to 132), 24 FPS at High (from 123 to 99), and 22 FPS at Ultra (from 117 to 95). This pattern — smaller absolute drops at higher settings — indicates that the GPU becomes more of a bottleneck as resolution increases, but the CPU remains capable of keeping up.

At 4K, the average FPS is 125 on Low, 97 on Medium (min 83, max 112), 73 on High, and 70 on Ultra. The difference between 1440p and 4K is 45 FPS at Low (170 to 125), 35 FPS at Medium (132 to 97), 26 FPS at High (99 to 73), and 25 FPS at Ultra (95 to 70). The 4K Ultra result of 70 FPS is just above the 60 FPS threshold, making it playable but with less margin. The min FPS of 83 at 4K Medium shows that even in demanding scenes, the system maintains a playable floor.

# Resolution Scaling

The FPS drop from 1080p to 4K is most pronounced at the Low setting: 211 FPS at 1080p falls to 125 FPS at 4K, a reduction of 40.8%. At Medium, the drop is 164 to 97, or 40.9%. At High, 123 to 73, a 40.7% reduction. At Ultra, 117 to 70, a 40.2% reduction. This remarkably consistent ~40% drop across all settings suggests that resolution scaling is uniform and predictable, with the GPU handling the increased pixel count linearly.

The consistency of the percentage drop across settings is telling: it indicates that the limiting component at 1080p is not the GPU, but rather the CPU or game engine's simulation thread. If the GPU were the bottleneck at 1080p, the drop to 4K would be more severe at lower settings (where FPS is higher) because the GPU would be doing relatively more work per frame. Instead, the uniform ~40% drop implies that the CPU is setting an upper bound on frame rates at 1080p, and the GPU takes over as the primary limiter at higher resolutions.

This is further supported by the absolute FPS values: at 1080p Low, the system hits 211 FPS, which is far above what most flight simulators can sustain due to CPU-bound simulation logic. The i9-14900K's 6.00 GHz boost clock and 2,262.5 Cinebench R23 single-core score are critical here, as Microsoft Flight Simulator's weather, physics, and AI systems are heavily single-threaded. The GPU, with its 16 GB VRAM and 716.8 GB/s bandwidth, is more than capable at 1080p, but the CPU's single-thread speed caps the frame rate.

At 4K, the GPU's role becomes dominant, as evidenced by the 70 FPS at Ultra versus 125 FPS at Low. The 55 FPS difference between Low and Ultra at 4K (versus 94 FPS at 1080p) shows that the GPU's rendering load scales with settings, and at 4K it is the primary bottleneck. The system is balanced in the sense that neither component is severely underutilized at any tested resolution — the CPU keeps frame rates high at 1080p, while the GPU provides playable performance at 4K.

# CPU Role

The Intel Core i9-14900K is a 24-core, 32-thread processor based on the Raptor Lake architecture, manufactured on Intel's 10 nm process. It has a base clock of 3.20 GHz and a boost clock of 6.00 GHz, with 36 MB of shared L3 cache and 2 MB of L2 cache per core. The CPU supports DDR4 and DDR5 memory in a dual-channel configuration, and its 125 W TDP reflects the high power draw of its performance cores. The 6.00 GHz boost clock is the standout feature for Microsoft Flight Simulator, which relies heavily on single-threaded performance for its simulation loop.

In Cinebench R23, the i9-14900K scores 2,262.5 in single-core, which is among the highest in the database. This score directly translates to the game's ability to maintain high frame rates at lower resolutions, as evidenced by the 211 FPS at 1080p Low. The game's engine benefits from high clock speeds to process flight physics, weather systems, and AI traffic in real time. The multi-core score of 39,399.5 is also strong, allowing the CPU to handle background tasks and game threads that are not strictly single-threaded, such as asset streaming and scenery loading.

The CPU's percentile ranking of 95 means it outperforms 95% of all CPUs, and its nearest rivals show how closely matched the top tier is. The i9-14900KF is only 0.3% faster, while the Core Ultra 9 290HX Plus is 0.6% faster — these differences are negligible in practice. The AMD EPYC 7413 leads by 1.2%, but that chip is a server-class processor, not typically used for gaming. The AMD Ryzen AI Max+ 395 trails by 1.7%, showing that Intel's 14th Gen flagship remains competitive in the CPU benchmark arena.

For Microsoft Flight Simulator specifically, the CPU's role is to keep the simulation logic from bottlenecking the GPU. The data shows that at 1080p, frame rates are high enough that the CPU is likely the limiting factor — the GPU is not being fully utilized because the CPU cannot feed it frames fast enough. At 4K, the GPU becomes the bottleneck, but the CPU still needs to maintain a consistent frame pacing to avoid stutters. The i9-14900K's combination of high single-thread speed (6.00 GHz boost) and ample multi-thread capacity (32 threads) makes it well-suited for this dual role, ensuring smooth performance across all tested resolutions and settings.