Microsoft Flight Simulator

The AMD Ryzen 7 5800XT, built on the Zen 3 architecture with a 7 nm process, brings 8 cores and 16 threads to the Microsoft Flight Simulator test bench. Its base clock of 3.80 GHz and boost clock of 4.80 GHz are the primary drivers for the simulation's heavy single-threaded logic, which handles flight physics, AI traffic, and weather systems. In the benchmark database, this CPU sits at the 86th percentile against all processors, with an average benchmark score of 29,774. Its closest rivals show how tightly the field is packed at this level: the AMD Ryzen 7 PRO 5755GE scores a 29,740 average (0.1% slower), while the AMD Ryzen 7 6800HS manages 29,856 (0.3% faster). The 5800XT's single-thread performance, measured at 959 in the 3dmark_single_thread test and 3,538 in passmark_single_thread, is critical because Microsoft Flight Simulator's frame pacing often hinges on the primary thread's ability to process the simulation loop.

The CPU's multi-threaded capabilities are equally relevant for background tasks like scenery loading and photogrammetry streaming. Its Cinebench R23 multicore score of 23,794 and Passmark multithread score of 27,988 indicate robust parallel performance, which matters when the game decompresses terrain data across all available threads. The 3dmark_16_threads score of 7,683 nearly matches the max_threads score of 7,680, suggesting the CPU scales efficiently up to its full thread count without significant overhead. This is a desktop part with a 105 W TDP on the AM4 socket, and its DDR4 dual-channel memory bandwidth of 51.2 GB/s feeds the core complex sufficiently for this simulator. In the context of this game's data, the CPU's role is to maintain a consistent simulation rate; the measured frame times at lower resolutions will reveal whether this processor keeps pace with the GPU or becomes the limiting factor.

GPU Role

The NVIDIA GeForce RTX 4090 serves as the graphics powerhouse in this configuration, equipped with 24 GB of GDDR6X memory on a 384-bit bus, yielding a bandwidth of 1.01 TB/s. Its Ada Lovelace architecture, built on a 5 nm process, contains 16,384 shading units, 512 texture mapping units, and 176 render output units. The boost clock of 2520 MHz, paired with a base clock of 2235 MHz, drives raw rasterization that this flight simulator demands for high-resolution textures and dense autogen scenery. The GPU's average benchmark score of 66,473 places it at the 91st percentile among all graphics cards, though its nearest rivals in the database are professional workstation parts: the NVIDIA Tesla T4 scores 66,733 (0.4% faster), the AMD Radeon Pro Vega 56 scores 67,097 (0.9% faster), and the NVIDIA Quadro P6000 scores 67,320 (1.3% faster). This comparison is notable because the RTX 4090, despite being a consumer flagship, is statistically matched against these compute-oriented cards in raw benchmark averages, but its gaming-specific features like the 128 RT cores and 512 tensor cores provide advantages in DirectX 12 Ultimate workloads that the game's rendering engine can exploit.

The 24 GB VRAM capacity is a decisive factor at high resolutions, as Microsoft Flight Simulator's detailed scenery packs and high-resolution satellite textures can consume substantial memory. With a pixel rate of 443.5 GPixel/s and a texture rate of 1,290.2 GTexel/s, the RTX 4090 is not the bottleneck at 1080p or 1440p in the measured data, but its performance scales with resolution as expected. The GPU's 82.58 TFLOPS of FP32 compute and 82.58 TFLOPS of FP16 (1:1 ratio) provide ample headroom for the simulation's shader complexity. The measured frames per second across the resolution spectrum will demonstrate that the GPU's role becomes more pronounced as pixel count increases, transitioning from a support role to the primary performance limiter.

Resolution Scaling

The measured FPS data reveals a clear pattern of the CPU and GPU division of labor across resolutions. At 1080p with Low settings, the system produces 187.2 FPS, which is the highest frame rate in the entire dataset. This figure suggests that neither component is heavily taxed at this resolution, but the simulation's single-threaded nature often caps performance here. Moving to 1440p Low, the frame rate drops to 170.6 FPS, a relatively modest 8.9% reduction from 1080p, indicating that the GPU still has ample headroom. At 4K Low, the frame rate falls to 136.1 FPS, which is a 27.3% drop from 1080p Low. This scaling factor is typical for a GPU-bound scenario, but the absolute values remain high, showing that the RTX 4090 can handle even the lighter presets at 4K with ease.

The more demanding presets tell a different story. At 1080p Ultra, the system averages 127.9 FPS, while at 1440p Ultra it drops to 103.8 FPS (a 18.8% reduction), and at 4K Ultra it falls to 75.9 FPS (a 40.7% reduction from 1080p Ultra). This steeper decline at Ultra settings indicates that the GPU's rendering load scales super-linearly with resolution when all visual features are enabled, particularly due to increased shadow complexity, volumetric clouds, and anisotropic filtering. Compare this to High settings: 1080p yields 139 FPS, 1440p yields 108.5 FPS (a 21.9% drop), and 4K yields 80.1 FPS (a 42.4% drop from 1080p). The Medium preset shows 1080p at 168.1 FPS, 1440p at 144.9 FPS (a 13.8% drop), and 4K at 104.8 FPS (a 37.7% drop from 1080p). The data indicates that at 1080p, the CPU is more likely to be the limiting factor, because the frame rate differences between Low and Ultra (187.2 vs 127.9 FPS) are narrower than the resolution scaling at Ultra suggests. At 4K, the GPU becomes the clear limiter, as the frame rate drops proportionally with pixel count.

FAQ

Q: What is the best resolution for this CPU-GPU combo based on the measured data?

A: The data shows that 1440p High provides a balanced experience at 108.5 FPS, which is well above the 60 FPS target. However, 4K High at 80.1 FPS offers a more visually immersive experience with a still-playable frame rate, making it the optimal choice for users prioritizing fidelity over extreme smoothness.

Q: Does the Ryzen 7 5800XT bottleneck the RTX 4090 in this game?

A: At 1080p with Low settings, the 187.2 FPS result indicates that the CPU is likely the limiting factor, as the GPU is not fully saturated. In contrast, at 4K Ultra the 75.9 FPS result shows the GPU is the primary constraint, meaning the CPU bottleneck diminishes as resolution and settings increase.

Q: How does the 5800XT compare to its nearest rival in raw CPU performance?

A: The 5800XT has an average benchmark score of 29,774, which is 0.1% higher than the AMD Ryzen 7 PRO 5755GE (29,740) and 0.3% higher than the AMD Ryzen AI 7 PRO 360 (29,682). It is 0.3% slower than the AMD Ryzen 7 6800HS (29,856) and the AMD Ryzen 7 7840H (29,868).

Q: What is the frame rate difference between Low and Ultra settings at 4K?

A: The measured data shows that 4K Low achieves 136.1 FPS, while 4K Ultra achieves 75.9 FPS, a difference of 60.2 FPS or approximately 44.2% lower performance at Ultra. This indicates that the Ultra preset imposes a substantial rendering cost.

Q: Is the RTX 4090's 24 GB VRAM sufficient for this game's textures?

A: The benchmark results do not report VRAM usage, but the game's high-resolution texture demands are met at all tested settings, as the system produces playable frame rates even at 4K Ultra. The 1.01 TB/s memory bandwidth ensures that texture streaming does not cause frame drops in the measured data.

Q: Which preset offers the best frame rate at 1440p for competitive play?

A: At 1440p, the Low preset achieves 170.6 FPS, which is the highest frame rate at that resolution. This preset is recommended for users seeking maximum responsiveness, though the Medium preset at 144.9 FPS provides a better visual balance with only a 15% reduction in frame rate.

Settings Recommendations

The measured data provides a clear hierarchy for selecting the optimal preset based on the target resolution and performance goals. At 1080p, the High preset delivers 139 FPS, which is 8.7% higher than the Ultra preset's 127.9 FPS, while the Medium preset at 168.1 FPS offers a substantial 20.9% improvement over High. For users with standard 60 Hz monitors, the Medium preset at 1080p is the best choice because it provides a 168.1 FPS average, leaving ample headroom for frame time variance and ensuring smooth gameplay without the visual trade-offs of Low. The Low preset at 187.2 FPS is only beneficial for users with high-refresh-rate displays above 144 Hz, but it sacrifices significant visual quality for a marginal gain over Medium.

At 1440p, the Medium preset at 144.9 FPS is the recommended starting point, as it balances visual fidelity with a frame rate that exceeds most high-refresh monitors' capabilities. The High preset at 108.5 FPS is a viable alternative for users with 144 Hz displays who prefer better shadows and lighting, and it remains well above the 60 FPS threshold. The Ultra preset at 103.8 FPS is still playable and offers the best image quality, but the 28.3% improvement in frame rate from dropping to High is often worth the visual compromise. At 4K, the Medium preset at 104.8 FPS is the standout choice, delivering a frame rate that is 30.8% higher than High's 80.1 FPS and 38.1% higher than Ultra's 75.9 FPS. This makes Medium the ideal preset for 4K gaming, as it maintains a smooth experience while preserving the resolution's visual benefits. The Ultra preset at 75.9 FPS is only recommended for users who prioritize maximum fidelity over frame rate and have displays that support VRR to mitigate the lower average.