Microsoft Flight Simulator

Microsoft Flight Simulator presents one of the most demanding rendering workloads in modern PC gaming, and the pairing of the AMD Ryzen 5 5600X with the NVIDIA GeForce RTX 3080 produces a dataset that clearly illustrates where the performance ceiling lies. The measured frames per second across three resolutions and four quality presets show a configuration that is consistently playable but requires careful attention to settings to maintain high frame rates, particularly at 4K. The data indicates a system where the GPU is the primary scaling factor at higher resolutions, while the CPU's six-core architecture holds its own at lower resolutions and settings.

Resolution Scaling

The transition from 1920x1080 to 2560x1440 and then to 3840x2160 reveals a predictable but steep performance curve that defines the RTX 3080's role in this simulation. At the High preset, average FPS drops from 94.1 at 1080p to 74.1 at 1440p, a reduction of 20.0 frames, and then falls further to 54.3 at 4K, another 19.8-frame decline. This pattern shows that each step up in resolution imposes a nearly identical absolute cost on the GPU, suggesting that the renderer is scaling its workload linearly with pixel count.

The Low preset tells a more interesting story. Here, the RTX 3080 achieves 156.1 FPS at 1080p, which drops to 124.3 at 1440p and then to 92.3 at 4K. The frame rate remains high even at 4K, indicating that when the simulation's visual complexity is reduced, the GPU has ample headroom. However, the relative drop from 1080p to 4K is 40.9%, which is less severe than the 42.3% drop seen at the High preset. This suggests that at Low settings, the CPU begins to exert more influence on the final frame rate, particularly at 1080p where the 156.1 FPS figure is likely capped by the processor's ability to feed the GPU with draw calls.

The Ultra preset shows the most demanding scenario, with average FPS falling from 87.9 at 1080p to 70.9 at 1440p and then to 48.9 at 4K. The 4K Ultra result is the only sub-50 FPS figure in the entire dataset, indicating that this combination strains the RTX 3080's 10 GB frame buffer and 760.3 GB/s memory bandwidth. The scaling from 1440p to 4K at Ultra is a 22.0-frame drop, which is the largest absolute loss between any two consecutive resolution steps, confirming that the highest settings push the GPU past its comfortable operating envelope.

FAQ

Q: What is the highest average frame rate achieved by this CPU and GPU combination?

A: The highest measured average FPS is 156.1, which occurs at 1920x1080 with the Low preset. This indicates the configuration can deliver very high refresh rates when visual fidelity is minimized.

Q: How does the RTX 3080 perform at 4K Ultra in this game?

A: The average FPS at 3840x2160 with Ultra settings is 48.9, which is the lowest score in the dataset. This falls below the 60 FPS threshold, suggesting that Ultra at 4K is not ideal for smooth gameplay.

Q: Is the Ryzen 5 5600X a bottleneck for the RTX 3080 in Microsoft Flight Simulator?

A: The data shows a 40.9% drop in FPS from 1080p to 4K at Low settings, compared to a 42.3% drop at High. The smaller relative drop at Low suggests the CPU limits performance at 1080p, as the GPU is less loaded, but the 6-core processor still delivers 87.9 FPS at 1080p Ultra.

Q: What is the performance difference between Medium and High settings at 1440p?

A: At 2560x1440, the Medium preset averages 96.6 FPS, while High averages 74.1 FPS. This represents a 22.5 FPS advantage for Medium, which is a significant gain for a single preset step.

Q: How does the RTX 3080 compare to its nearest GPU rivals based on average benchmark scores?

A: The RTX 3080 has an average benchmark score of 35787, which places it 0.9% behind the AMD Radeon RX 7900 GRE and 0.2% behind the AMD Radeon Pro Duo. It is 1% ahead of the NVIDIA GeForce RTX 5070 Ti Mobile.

Q: Does the 10 GB VRAM capacity of the RTX 3080 impact 4K performance?

A: The 4K Ultra result of 48.9 FPS is the weakest in the dataset, and the 10 GB GDDR6X memory with 760.3 GB/s bandwidth appears insufficient for the highest settings, as the frame rate drops below the playable 60 FPS threshold.

GPU Role

The NVIDIA GeForce RTX 3080 is the dominant factor in determining frame rates at higher resolutions, and the measured data confirms this. Its core configuration includes 8704 shading units, 272 texture mapping units, and 96 raster output units, which work together to produce a pixel rate of 164.2 GPixel/s and a texture rate of 465.1 GTexel/s. The boost clock of 1710 MHz and base clock of 1440 MHz provide the raw compute throughput, while the 10 GB GDDR6X memory on a 320-bit bus delivers 760.3 GB/s of bandwidth.

The memory subsystem is particularly relevant for Microsoft Flight Simulator, which streams vast amounts of terrain and scenery data. At 4K Ultra, the average FPS of 48.9 suggests that the 10 GB frame buffer is being saturated, forcing the GPU to manage data more aggressively. This is visible in the scaling pattern: at 1080p Ultra, the RTX 3080 achieves 87.9 FPS, but at 4K Ultra, it drops by 44.3%, demonstrating that the memory capacity and bandwidth become limiting factors as pixel count increases.

The RTX 3080's nearest rival, the AMD Radeon RX 7900 GRE, is only 0.9% faster in average benchmark score, yet the measured game data shows this configuration can still deliver 54.3 FPS at 4K High. This suggests that the GPU's architecture is well-suited to the simulation's rendering demands, but not without compromise. The passmark G3D score of 25086 and the 3DMark Steel Nomad DX12 score of 4407 further indicate a strong overall compute capability that translates into playable frame rates across most settings.

Measured FPS Breakdown

At 1920x1080, the configuration shows a wide range of performance depending on the preset. The Low setting produces 156.1 FPS, which drops to 123.8 at Medium, 94.1 at High, and 87.9 at Ultra. The gap between Low and Medium is 32.3 FPS, which is the largest single-preset jump at this resolution, indicating that the Medium preset introduces significant visual effects that tax the GPU. The difference between High and Ultra is only 6.2 FPS, suggesting diminishing returns from the highest preset at 1080p.

Moving to 2560x1440, the Low preset still delivers a high 124.3 FPS, but the Medium setting falls to 96.6 FPS. High averages 74.1 FPS, and Ultra is close behind at 70.9 FPS. The delta between High and Ultra shrinks to just 3.2 FPS at this resolution, which shows that the GPU is becoming the primary constraint as pixel count rises. The step from Low to Medium at 1440p is 27.7 FPS, a smaller absolute drop than at 1080p, reflecting the increased workload on the GPU.

At 3840x2160, the performance curve becomes steeper. Low averages 92.3 FPS, which is still smooth, but Medium drops to 71.4 FPS. High falls to 54.3 FPS, and Ultra bottoms out at 48.9 FPS. The transition from Medium to High at 4K is a 17.1 FPS loss, while the move from High to Ultra is only 5.4 FPS. This pattern indicates that the RTX 3080's compute and memory resources are nearly exhausted at 4K with the higher presets, and users must choose between visual fidelity and frame rate.

Settings Recommendations

For users targeting a smooth 60 FPS experience, the data points to the Medium preset as the optimal choice across all three resolutions. At 1920x1080, Medium delivers 123.8 FPS, which is well above the threshold and leaves headroom for demanding scenes. At 2560x1440, Medium averages 96.6 FPS, providing a comfortable margin. Even at 3840x2160, Medium achieves 71.4 FPS, which is above 60 FPS and represents the only preset at 4K that can maintain this target.

The High preset is a viable option for 1080p and 1440p, with scores of 94.1 and 74.1 FPS respectively, but it fails to reach 60 FPS at 4K. Users who prioritize visual quality over frame rate could select High at 1440p, but the 17.1 FPS loss compared to Medium at that resolution may not justify the graphical improvements. For those with high refresh rate monitors at 1080p, the Low preset at 156.1 FPS is the only way to approach the 144 Hz mark, though the visual compromises are substantial.

The Ultra preset is only recommended for 1080p, where it produces 87.9 FPS, but even here it offers only a 6.2 FPS improvement over High. At 1440p, Ultra's 70.9 FPS is nearly identical to High's 74.1 FPS, making the extra settings load a poor trade. At 4K, Ultra's 48.9 FPS is below the playable threshold, so it should be avoided. The data strongly suggests that Medium is the balanced choice, delivering the best combination of frame rate and visual fidelity across the entire resolution range.

CPU Role

The AMD Ryzen 5 5600X provides the computational foundation for this configuration, and its 6 cores and 12 threads are sufficient to keep the RTX 3080 fed in most scenarios, though the data reveals its limits. The processor runs at a base clock of 3.70 GHz and can boost to 4.60 GHz, with 32 MB of L3 cache that helps with the simulation's complex data structures. Its Cinebench R23 multicore score of 18578 and singlecore score of 2622 indicate strong per-thread performance, which is critical for a game that relies heavily on a single main thread.

The CPU's influence is most apparent at 1080p with the Low preset, where the 156.1 FPS result suggests the processor is nearing its limit. The 3DMark single-thread score of 917 and 2-thread score of 1793 show that the 5600X has excellent single-core throughput, but the absolute frame rate at Low settings is likely constrained by the simulation's physics and scenery processing. At 4K with the same Low preset, the 92.3 FPS figure is much lower, indicating that the GPU has taken over as the limiting factor.

The nearest CPU rivals, such as the Intel Core i7-10700 and AMD Ryzen 5 5600GT, have average scores within 0.3% of the 5600X, meaning the processor is not a differentiating factor in this comparison. The 12-thread performance in 3DMark, scoring 5588, shows that the CPU can handle multi-threaded workloads, but Microsoft Flight Simulator's reliance on single-thread performance means the 4.60 GHz boost clock is more important than the core count. The data shows that the CPU is not a bottleneck at 1440p or 4K, where the GPU dominates, but it does cap performance at 1080p when visual settings are reduced.