Microsoft Flight Simulator

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

The measured FPS data for Microsoft Flight Simulator with the Intel Core i5-14600KF and NVIDIA GeForce RTX 5070 reveals a clear pattern of GPU-bound scaling as resolution increases. At 1080p Low settings, the combo achieves 176.3 FPS, which drops to 142.3 FPS at 1440p and further to 105.7 FPS at 4K. This represents a 40% reduction from 1080p to 4K at Low settings, a scaling curve that strongly suggests the GPU is the primary bottleneck at higher resolutions.

The picture changes dramatically when examining Ultra settings. At 1080p Ultra, the system produces 99.6 FPS. Moving to 1440p Ultra yields 80.8 FPS, and 4K Ultra lands at 58.5 FPS. The percentage drop from 1080p to 4K at Ultra is approximately 41%, nearly identical to the Low-settings scaling. This consistency across settings presets indicates that the RTX 5070's render pipeline is being saturated in a predictable, resolution-dependent manner.

Interestingly, the gap between Medium and High settings narrows as resolution climbs. At 1080p, Medium delivers 138.8 FPS versus High's 102.4 FPS — a 36 FPS difference. At 4K, the same comparison shows 80.8 FPS versus 59.9 FPS, a 21 FPS gap. This compression suggests that at 4K, the GPU's shading units and memory bandwidth become the limiting factors, rather than the specific workload differences between Medium and High presets.

The data implies that this pairing is well-balanced for 1440p gaming, where the scaling from 1080p to 1440p at High settings (102.4 to 83.3 FPS) still maintains a smooth experience. At 4K, however, even Low settings only reach 105.7 FPS, and Ultra dips below 60 FPS. This indicates that users targeting 4K will need to make significant compromises in visual fidelity to maintain high frame rates, while 1080p and 1440p offer more headroom for quality settings.

# FAQ

Q: What is the best resolution for this combo in Microsoft Flight Simulator?

A: The data shows 1440p as the sweet spot. At High settings, 1440p delivers 83.3 FPS, which is comfortably above 60 FPS, while 4K High drops to 59.9 FPS — right at the edge of playability. At 1080p, the system exceeds 100 FPS on High settings (102.4 FPS), but the visual gains from 1440p likely justify the modest FPS cost.

Q: How does the RTX 5070's VRAM capacity affect 4K performance?

A: The GPU has 12 GB of GDDR7 memory on a 192-bit bus with 672.0 GB/s bandwidth. At 4K Ultra, the combo produces 58.5 FPS, suggesting the memory subsystem is handling the load but not with much headroom. The 4K High result of 59.9 FPS is nearly identical, indicating that VRAM capacity is not the primary constraint at these settings.

Q: Is the Core i5-14600KF holding back the RTX 5070 in this game?

A: The CPU has 14 cores (20 threads) with a 5.30 GHz boost clock, placing it in the 93rd percentile of all CPUs. The consistent FPS scaling across resolutions — from 176.3 FPS at 1080p Low to 105.7 FPS at 4K Low — suggests the CPU provides sufficient headroom, as the frame rate drops are proportional to resolution increases rather than CPU stalls.

Q: What settings preset provides the best 4K experience?

A: At 4K, the Medium preset delivers 80.8 FPS, which is the highest frame rate above 60 FPS among quality presets. High (59.9 FPS) and Ultra (58.5 FPS) both fall below 60 FPS, making Medium the only quality option that maintains smooth performance at 4K.

Q: How does this combo's rank compare to other tested configurations?

A: The combo ranks 334th out of 1,795 tested combinations in this game, placing it in the top 19% of all tested systems. This ranking reflects the strong overall performance of the i5-14600KF and RTX 5070 pairing, despite the RTX 5070's 83rd percentile standing among all GPUs.

Q: Can this system handle 1080p Ultra in Microsoft Flight Simulator?

A: Yes, 1080p Ultra produces 99.6 FPS, which is well above the 60 FPS threshold. Even at 1440p Ultra, the system maintains 80.8 FPS, so users with 1080p or 1440p monitors can enable maximum settings without concern.

# How This Combo Ranks

The Intel Core i5-14600KF and NVIDIA GeForce RTX 5070 combo ranks 334th out of 1,795 tested configurations in Microsoft Flight Simulator, placing it in the 81st percentile of all tested systems. This is a strong result for a mid-range CPU paired with a newly released GPU, indicating that the combination punches above its individual component rankings.

The CPU itself sits in the 93rd percentile of all CPUs with an average benchmark score of 49,367. Its nearest rival, the Intel Core i5-14600K, scores 49,166 with a delta of 0.4% — essentially a statistical tie. The AMD Ryzen 9 5950X trails by 0.6% (49,062), while the AMD EPYC 4345P leads by 0.5% (49,595). This clustering suggests the i5-14600KF is well-positioned among high-end desktop processors, providing ample compute power for flight simulation's complex physics and scenery calculations.

The RTX 5070's standing is more modest, ranking in the 83rd percentile of all GPUs with an average benchmark score of 41,687. Its nearest rivals include the AMD Radeon Pro 5300 (41,610, +0.2%) and the NVIDIA GeForce RTX 3090 (41,441, +0.6%), while the NVIDIA Tesla M40 (41,897, -0.5%) and AMD Radeon Pro 580X (41,991, -0.7%) sit slightly ahead. This places the RTX 5070 in a competitive tier with previous-generation flagship GPUs, though its modern architecture features — including 48 RT cores and 192 tensor cores — may provide advantages in games with ray tracing or DLSS support.

The combo's overall rank of 334 suggests that the i5-14600KF's strong CPU performance compensates for the RTX 5070's mid-tier GPU standing. In a simulation game like Microsoft Flight Simulator, which is known for heavy CPU usage in scenery generation and physics, this balance proves beneficial, as evidenced by the measured FPS results.

# Measured FPS Breakdown

At 1080p, the system demonstrates its full potential across all settings presets. Low settings produce 176.3 FPS, Medium delivers 138.8 FPS, High reaches 102.4 FPS, and Ultra maintains 99.6 FPS. The 76.7 FPS gap between Low and Ultra illustrates the significant impact of quality presets on frame rate at this resolution.

Moving to 1440p, the frame rates scale down proportionally. Low settings yield 142.3 FPS, Medium provides 111.9 FPS, High achieves 83.3 FPS, and Ultra hits 80.8 FPS. The difference between High and Ultra narrows to just 2.5 FPS at 1440p, compared to 2.8 FPS at 1080p, suggesting that the GPU's limits begin to manifest more clearly at this resolution.

At 4K (3840x2160), the performance envelope tightens considerably. Low settings deliver 105.7 FPS, which remains playable, while Medium drops to 80.8 FPS. High settings produce 59.9 FPS, and Ultra falls to 58.5 FPS. The 4K Low result is notable — it's only 36% lower than the 1080p Low result, indicating that even at 4K, the RTX 5070 can provide high frame rates when visual quality is reduced.

The scaling from 1080p to 4K across all settings shows a consistent pattern: Low drops by 40%, Medium by 42%, High by 41%, and Ultra by 41%. This uniformity reinforces the interpretation that the GPU is the limiting factor at 4K, with the CPU maintaining sufficient headroom to feed the render pipeline.

# GPU Role

The NVIDIA GeForce RTX 5070 features 12 GB of GDDR7 memory on a 192-bit bus, delivering 672.0 GB/s of bandwidth. The GPU's base clock runs at 2325 MHz with a boost clock of 2512 MHz, and it houses 6,144 shading units, 192 texture mapping units, and 80 raster operation units. These specifications position the card as a capable 1440p performer with reasonable 4K capabilities.

In Microsoft Flight Simulator, the GPU's role is to render complex 3D scenery, terrain, and aircraft models, while also handling weather effects and lighting. The measured FPS data shows that at 1080p Low, the GPU is not the bottleneck — the 176.3 FPS result likely approaches the limits of what the game engine can output at this resolution. However, at 4K Ultra, the GPU becomes the clear constraint, with 58.5 FPS indicating the rendering workload exceeds the card's computational throughput.

The 12 GB VRAM capacity is sufficient for this game at 4K, as evidenced by the modest FPS difference between High (59.9) and Ultra (58.5) at 4K — only 1.4 FPS separates these presets. This suggests that the GPU's compute units, rather than memory capacity, limit 4K Ultra performance. The 672.0 GB/s bandwidth provides ample data throughput for the game's texture streaming needs, even at 4K resolutions.

The RTX 5070's 48 RT cores and 192 tensor cores are present but not directly measured in this game's FPS data. However, the GPU's overall benchmark performance — ranking in the 83rd percentile — indicates it competes with previous-generation flagship cards like the RTX 3090, which trails by only 0.6% in average benchmark score.

# Settings Recommendations

For 1440p displays, the High preset at 83.3 FPS offers the best balance of visual quality and performance. The Ultra preset at 80.8 FPS provides only a 2.5 FPS improvement over High, making High the more efficient choice. Users with 1080p monitors can comfortably enable Ultra settings at 99.6 FPS without sacrificing smoothness.

At 4K, the Medium preset at 80.8 FPS is the only quality option that maintains frame rates above 60 FPS. The High preset at 59.9 FPS and Ultra at 58.5 FPS both fall below this threshold, making Medium the recommended choice for 4K users who prioritize smooth gameplay. The 4K Low setting at 105.7 FPS is available for users who require maximum frame rates, though the visual compromise may be significant for a flight simulator where scenery detail is a key experience factor.

The data reveals an interesting anomaly: the 4K Medium result (80.8 FPS) exactly matches the 1440p Ultra result (80.8 FPS). This suggests that at these settings, the GPU is delivering the same frame rate despite the resolution difference, indicating that the 4K Medium workload is equivalent to the 1440p Ultra workload in terms of GPU processing demands.

For users with high-refresh-rate displays at 1080p, the Low preset at 176.3 FPS provides the highest frame rates, though Medium at 138.8 FPS is likely the sweet spot for visual quality and speed. The gap between Medium and High at 1080p (36.4 FPS) is substantial, suggesting that the High preset introduces significantly more GPU workload than Medium.

# CPU Role

The Intel Core i5-14600KF brings 14 cores and 20 threads to this pairing, with a base clock of 3.50 GHz and a boost clock of 5.30 GHz. This Raptor Lake architecture processor features 24 MB of shared L3 cache and 2 MB per-core L2 cache, with 80 KB per-core L1 cache. It supports DDR4 and DDR5 memory in dual-channel configuration, and its 125 W TDP is manageable for most desktop builds.

In Microsoft Flight Simulator, the CPU handles flight physics, weather simulation, and scenery loading. The benchmark results show the i5-14600KF achieves a Cinebench R23 multi-core score of 32,889 and single-core score of 4,643, placing it in the 93rd percentile of all CPUs. This strong single-threaded performance is particularly relevant for flight simulators, which often have significant single-threaded workloads for game logic and physics.

The CPU's average benchmark score of 49,367 places it within 0.6% of the AMD Ryzen 9 5950X (49,062) and 0.4% of the Intel Core i5-14600K (49,166). This tight clustering indicates that the i5-14600KF is competitive with both previous-generation flagship and current mid-range rivals. The 14-core configuration provides ample multi-threading capability for the game's background tasks, while the 5.30 GHz boost clock ensures responsive single-threaded performance.

The measured FPS data indicates that the CPU is not the primary bottleneck in this pairing. The consistent FPS scaling from 1080p to 4K across all settings presets — with drops of approximately 40-42% — suggests that the GPU is the limiting factor at higher resolutions. At 1080p Low, the 176.3 FPS result likely approaches the game engine's ceiling, and the CPU's substantial single-threaded performance ensures it can feed the RTX 5070's render pipeline without stalling.