Microsoft Flight Simulator

Microsoft Flight Simulator is a uniquely demanding title, and the data for the AMD Ryzen 9 7900X paired with the NVIDIA GeForce RTX 5070 reveals a configuration that is heavily balanced toward CPU capability. The measured frame rates indicate that this combo is capable of delivering smooth gameplay, but the scaling patterns across resolutions expose a system where the processor is doing the heavy lifting, particularly at lower graphical presets.

Resolution Scaling

The frame rate progression from 1080p to 4K is the clearest indicator of where the bottleneck lies within this system. At the Low preset, the performance drop is substantial: the average FPS falls from 176.4 at 1920x1080 to 140.2 at 2560x1440, and then further to 105.4 at 3840x2160. This represents a 40% reduction in FPS when moving from the lowest to the highest resolution at these settings. Such a significant decline suggests that while the GPU is becoming more stressed at 4K, the CPU’s high thread count is still feeding it enough data to see a large performance swing.

However, the scaling behavior changes dramatically when the settings are increased. At the Ultra preset, the drop from 1080p to 4K is much more muted, with averages of 100.6, 78.9, and 56.1 FPS respectively. This is a 44% decline from 1080p to 4K, but the absolute numbers suggest a different limiting factor. The gap between the Low and Ultra presets at 4K is 49.3 FPS, which is a massive spread. This indicates that at 4K, the GPU’s rendering load is the primary constraint, and the CPU’s role diminishes as the pixel count and graphical complexity rise. The data shows a classic shift: at 1080p Low, the system is almost certainly CPU-bound, whereas at 4K Ultra, it is clearly GPU-bound.

CPU Role

The AMD Ryzen 9 7900X is a 12-core, 24-thread processor based on the Zen 4 architecture, running on the AMD Socket AM5 platform. Its base clock of 4.70 GHz and boost clock of 5.60 GHz are high for a desktop part, which is critical for a simulation game like Microsoft Flight Simulator that often relies on strong single-thread performance for its core simulation logic. In synthetic benchmarks, this CPU achieves a Cinebench R23 single-core score of 6168 and a multi-core score of 43695, underscoring its dual nature of high frequency and high throughput.

The relevance of the CPU becomes apparent when analyzing the 1080p Low preset results. The 176.4 FPS average is far beyond what most games would need, but it demonstrates that the processor is not holding back the frame generation at this low graphical load. The 3DMark single-thread score of 1093 and the 2-thread score of 2137 support the notion that the CPU’s per-core performance is excellent. In contrast, the transition to 4K Ultra shows the CPU has ample headroom, as the FPS is limited by the GPU. The data suggests that this CPU is overqualified for the task at higher resolutions, providing a stable foundation that allows the GPU to be the sole limiting factor.

How This Combo Ranks

Within the database of tested combinations, this specific pairing of the Ryzen 9 7900X and RTX 5070 holds a combo rank of 353 out of 1795 tested combos for Microsoft Flight Simulator. This places it in the top 20% of all configurations, which is a strong result for a high-end desktop setup. The percentile versus all CPUs is 93, indicating that the processor is in the top 7% of all CPUs tested, which reinforces the idea that the CPU is a primary strength of this build.

The CPU’s average benchmark score of 50556 places it in close competition with several other processors. Its nearest rival, the Intel Core Ultra 5 235, has an average score of 50598, a negligible 0.1% difference. Similarly, the AMD Ryzen 9 5900XT is only 0.4% ahead, and the Intel Core i7-13850HX is 0.5% ahead. These tiny deltas suggest that within this performance tier, the Ryzen 9 7900X is highly competitive, and its ranking in the game is likely influenced more by the GPU’s performance than by any CPU deficiency. The data indicates that this combo is not a top-tier leader but is a solidly above-average performer that would handle high refresh rate 1440p gaming with ease.

Measured FPS Breakdown

The measured FPS data provides a detailed look at the performance envelope. At 1920x1080, the game is highly playable at all settings. The Low preset yields 176.4 FPS, while Medium and High produce 140.7 and 102.8 FPS respectively. The Ultra preset still maintains 100.6 FPS, which is excellent for a flight simulator. Moving to 2560x1440, the performance remains strong: Low hits 140.2 FPS, Medium 109.3 FPS, High 83.5 FPS, and Ultra 78.9 FPS. This resolution appears to be the sweet spot for this combo, as it provides a significant visual upgrade over 1080p while still delivering frame rates well above 60 FPS on high settings.

At 3840x2160, the demands of the game become more apparent. The Low preset manages 105.4 FPS, which is still very smooth, but the Medium preset drops to 83.9 FPS. The High and Ultra presets fall to 58.4 and 56.1 FPS respectively, which are playable but on the edge of the 60 FPS target for a smooth experience. The margin between High and Ultra at 4K is a mere 2.3 FPS, suggesting that the Ultra preset is not offering a proportional visual benefit for the performance cost. The data shows a clear hierarchy: 1080p is for maximum frame rates, 1440p for a balance of quality and speed, and 4K for visual fidelity with compromised frame rates on the highest settings.

GPU Role

The NVIDIA GeForce RTX 5070 is a Blackwell 2.0 architecture GPU with 6144 shading units and 12 GB of GDDR7 memory on a 192-bit bus, providing a memory bandwidth of 672.0 GB/s. Its boost clock is 2512 MHz, and it has a pixel rate of 201.0 GPixel/s and a texture rate of 482.3 GTexel/s. The GPU’s performance is solid, but its role in this pairing is to be the limiting factor at higher resolutions and settings.

The benchmark data shows the GPU has a Passmark G3D score of 29137 and a Passmark GPU Compute score of 15787, with a percentile versus all GPUs of 83. Its nearest rivals in terms of raw compute are the AMD Radeon Pro 5300 (0.2% ahead) and the NVIDIA GeForce RTX 3090 (0.6% ahead), which is surprising given the generational difference. However, the RTX 5070’s advantage lies in its modern feature set and efficiency.

In the context of Microsoft Flight Simulator, the GPU’s role is clear when examining the 4K Ultra result of 56.1 FPS. This is a scenario where the 12 GB of VRAM and the GPU’s compute power are fully engaged. The fact that the FPS does not improve significantly from High to Ultra suggests a hard limit on the GPU’s rendering capability. The data indicates that the RTX 5070 is a capable card for this game, but it is not powerful enough to maintain 60 FPS at 4K with maxed settings. Conversely, its performance at 1440p high settings (83.5 FPS) is where it shines, providing a smooth and detailed experience that leverages the CPU’s strength without being overwhelmed.