Microsoft Flight Simulator

# How This Combo Ranks

The Intel Core i5-14400F paired with the AMD Radeon RX 7900 XT lands at rank 389 out of 1795 tested combos in Microsoft Flight Simulator. That places this configuration in the top 22% of all systems tested, which is a strong showing for a flight sim known for hammering both CPU and GPU heavily. The CPU itself sits at the 88th percentile among all processors in general benchmarks, while the GPU holds the 82nd percentile among all graphics cards — both are above-average parts, and their combined rank reflects that balance.

What makes this ranking particularly notable is the nature of Microsoft Flight Simulator. Unlike many titles that scale almost entirely with GPU power, this sim's heavy simulation logic and terrain streaming create a workload where the CPU matters more than in typical shooters or action games. The i5-14400F's 10 cores and 16 threads, with a boost clock of 4.70 GHz, provide enough headroom to keep feeding the RX 7900 XT. The CPU's nearest rivals — the Intel Core i7-12800H, AMD Ryzen 5 PRO 7645, AMD Ryzen 7 250, and Intel Core i7-13705H — all score within 0.2% of each other in average benchmark score, meaning the i5-14400F is essentially tied with a range of mobile and desktop chips. This parity suggests the processor is not the limiting factor in most scenarios.

# GPU Role

The AMD Radeon RX 7900 XT is the heavyweight in this pairing, and its specifications explain why it drives such high frame rates. With 20 GB of GDDR6 memory on a 320-bit bus, the card delivers 800.0 GB/s of bandwidth — crucial for a game that streams vast amounts of terrain and photogrammetry data. The 5 nm Navi 31 chip packs 57,700 million transistors across a 529 mm² die, with 5376 shading units and 84 ray accelerators. Boost clock reaches 2394 MHz, with a game clock of 2025 MHz and base clock of 1387 MHz.

In Microsoft Flight Simulator specifically, the GPU's role becomes evident when comparing settings presets. At 1080p Low, the combo hits 177.1 FPS — a number that suggests the CPU is doing most of the heavy lifting at lower graphical loads. But as settings climb to Ultra at 1080p, the average drops to 101.2 FPS, showing the GPU taking on more work. The RX 7900 XT's 20 GB frame buffer is particularly valuable at higher resolutions and settings, where texture data for detailed cockpits and dense cityscapes can balloon quickly. The card's 51.48 TFLOPS of FP32 compute power and 459.6 GPixel/s pixel rate ensure that even at 4K Ultra, the sim remains playable.

# Resolution Scaling

The measured FPS data reveals a clear pattern of GPU-bound scaling as resolution increases. At 1080p Ultra, the combo produces 101.2 FPS; stepping up to 1440p Ultra drops that to 77.3 FPS (a 24% reduction), and 4K Ultra falls to 59.1 FPS (a further 24% drop from 1440p). This consistent scaling curve indicates the RX 7900 XT is the primary constraint at higher resolutions, while the CPU maintains enough throughput to avoid bottlenecking.

The Low preset tells a different story. At 1080p Low, the system hits 177.1 FPS, but 1440p Low drops to 140.6 FPS and 4K Low to 101.6 FPS. The smaller percentage drops at lower settings suggest the CPU begins to play a larger role when the GPU has less work to do. The i5-14400F's 20 MB of shared L3 cache and 1.25 MB per-core L2 cache help maintain simulation thread performance, but even so, the frame rate ceiling at 1080p Low is likely CPU-limited. For users targeting 4K, the data shows the GPU is the deciding factor — the gap between 1080p and 4K at Ultra is 42.1 FPS, while at Low it's 75.5 FPS, confirming that higher settings amplify the GPU's influence.

# Measured FPS Breakdown

1080p (1920x1080):

• Low: 177.1 FPS average
• Medium: 135.7 FPS average
• High: 104.4 FPS average
• Ultra: 101.2 FPS average

At 1080p, the combo delivers excellent performance across all presets. The jump from Low to Medium costs 41.4 FPS, while Medium to High costs another 31.3 FPS. Interestingly, High to Ultra only loses 3.2 FPS — a tiny penalty for the visual uplift. This suggests that at 1080p, the CPU is the limiting factor at Ultra settings, since the GPU has headroom to spare.

1440p (2560x1440):

• Low: 140.6 FPS average
• Medium: 109 FPS average
• High: 80.7 FPS average
• Ultra: 77.3 FPS average

Moving to 1440p, the frame rates remain strong. Low to Medium drops 31.6 FPS, Medium to High drops 28.3 FPS, and High to Ultra drops just 3.4 FPS. The pattern repeats — the gap between High and Ultra is minimal, indicating that the CPU's simulation overhead becomes the bottleneck once the GPU can handle the graphical load. 1440p High at 80.7 FPS is a sweet spot for smooth flight in dense areas.

4K (3840x2160):

• Low: 101.6 FPS average
• Medium: 78.5 FPS average
• High: 60.3 FPS average
• Ultra: 59.1 FPS average

At 4K, the GPU finally takes full control. The drop from Low to Medium is 23.1 FPS, Medium to High is 18.2 FPS, and High to Ultra is only 1.2 FPS. The 4K Ultra result of 59.1 FPS is just above the 60 FPS target, but the High preset at 60.3 FPS is effectively identical — meaning players should choose High for the same frame rate with potentially better optimization. The 4K Low result of 101.6 FPS shows the RX 7900 XT's raw power, as even at this high resolution, the card can push triple-digit frame rates when settings are reduced.

# FAQ

Q: Is this combo better suited for 1080p or 4K gaming in Microsoft Flight Simulator?

A: The data shows strong performance at both ends. At 1080p Ultra, the system averages 101.2 FPS, while 4K Ultra hits 59.1 FPS. For 4K, the High preset at 60.3 FPS is nearly identical to Ultra, making it the better choice at that resolution.

Q: How does the i5-14400F compare to its nearest CPU rivals?

A: The i5-14400F scores within 0.2% of the Intel Core i7-12800H, AMD Ryzen 5 PRO 7645, AMD Ryzen 7 250, and Intel Core i7-13705H in average benchmark scores. Its 88th percentile ranking places it above most CPUs on the market.

Q: What GPU benchmark score does the RX 7900 XT achieve?

A: The GPU scores 29,009 in Passmark G3D and 38358 in average benchmark score, placing it at the 82nd percentile. Its nearest rivals — the NVIDIA GeForce RTX 5080 Mobile, NVIDIA CMP 70HX, NVIDIA GeForce MX570, and NVIDIA GeForce RTX 4080 Mobile — are all within 0.6% of its score.

Q: Does the CPU bottleneck the GPU in this game?

A: The evidence suggests yes at lower resolutions and settings. At 1080p Low, the system achieves 177.1 FPS, but at 1080p Ultra it drops to 101.2 FPS — a 75.9 FPS penalty. The minimal gap between High and Ultra at all resolutions (3.2 FPS at 1080p, 3.4 FPS at 1440p, 1.2 FPS at 4K) indicates the CPU's simulation thread limits throughput before the GPU maxes out.

Q: What is the best resolution-to-settings ratio for this combo?

A: 1440p High at 80.7 FPS offers the best balance of visual quality and frame rate. 4K High at 60.3 FPS is also viable, but the 1440p result provides more headroom for complex scenery or multiplayer sessions.

Q: How much VRAM does the RX 7900 XT have, and is it sufficient?

A: The card has 20 GB of GDDR6 memory with 800.0 GB/s bandwidth. This is ample for Microsoft Flight Simulator, which benefits from large frame buffers for terrain textures. The 4K Ultra result of 59.1 FPS indicates no memory-related stuttering or bottleneck.

# Settings Recommendations

Based on the measured FPS data, the optimal preset depends on your target resolution. For 1080p users, the High preset at 104.4 FPS is the best choice — Ultra only adds 3.2 FPS less performance but offers diminishing visual returns. Going below High is unnecessary given the frame rate headroom.

At 1440p, the High preset delivers 80.7 FPS, which is smooth for a flight sim. The Ultra preset at 77.3 FPS is only 3.4 FPS slower, so if you prioritize maximum visual fidelity and your monitor supports adaptive sync, Ultra is viable. However, High gives you more margin for dense urban areas or heavy weather effects that can cause frame drops.

For 4K, the choice is clear: High preset at 60.3 FPS. The Ultra preset at 59.1 FPS is statistically identical, so there's no reason to select Ultra unless you want the absolute highest settings and can tolerate a frame rate just below 60. The Low preset at 101.6 FPS is available for high-refresh 4K monitors, but the visual compromise is significant.

The Medium preset at 4K (78.5 FPS) offers a middle ground, though the 18.2 FPS gap between Medium and High suggests the High preset is worth the performance cost. Overall, this combo is best utilized at 1440p High for a balance of smoothness and graphical detail, or at 4K High for those prioritizing resolution over frame rate headroom.