Microsoft Flight Simulator

# Resolution Scaling

The measured FPS data for Microsoft Flight Simulator with the AMD Ryzen 9 9900X3D and AMD Radeon RX 7900 XTX reveals a pronounced resolution sensitivity that shifts the bottleneck character as pixel count rises. At 1920x1080 with Low settings, the combo delivers 192 FPS average, which drops to 155 FPS at 2560x1440 and further to 114 FPS at 3840x2160. This represents a 40.6% reduction from 1080p to 1440p and a 40.6% reduction from 1440p to 4K, showing that each resolution step imposes a nearly identical proportional cost on the frame rate.

The scaling pattern becomes more revealing when examining the High preset. At 1080p High, the system produces 112 FPS average; at 1440p High, it falls to 91 FPS; and at 4K High, it reaches 67 FPS. The percentage drops are 18.8% from 1080p to 1440p and 26.4% from 1440p to 4K. The larger proportional drop at the 4K step suggests the GPU is becoming the primary limiting factor at higher resolutions, while at 1080p the CPU's 12 cores and 24 threads can more easily feed the graphics pipeline.

Looking at Ultra settings, the trend intensifies. The 1080p Ultra result of 107 FPS is only 4.5% lower than the High preset at the same resolution, indicating that the additional graphical load at 1080p is still well within the GPU's capacity. However, at 4K Ultra, the average FPS falls to 64, which is 40.2% below the 1080p Ultra figure. This steep decline at 4K Ultra underscores that the RX 7900 XTX, despite its 24 GB of GDDR6 memory and 960.0 GB/s bandwidth, is heavily taxed by the highest resolution and quality combination.

The Medium preset provides the only complete min/max data in the measured results, offering insight into frame time consistency. At 1080p Medium, the average is 149 FPS with a minimum of 127 and maximum of 172, yielding a spread of 45 FPS. At 1440p Medium, the average drops to 120 FPS with a range of 102 to 138 (36 FPS spread), and at 4K Medium, the average is 89 FPS with a range of 76 to 102 (26 FPS spread). Interestingly, the absolute spread narrows as resolution increases, but the ratio of min-to-max remains similar, suggesting that frame pacing is consistent across resolutions even as the overall performance ceiling lowers.

The data indicates that this combination is not GPU-bound at 1080p, as evidenced by the 192 FPS Low result and the relatively small gap between High and Ultra at that resolution. The real strain appears when pushing 4K, where even Low settings produce only 114 FPS, and Ultra drops to 64 FPS. For users targeting 60 FPS as a minimum threshold, the 4K Ultra result hovers just above that line, but the absence of min FPS data for most settings means the actual worst-case frame times remain unquantified.

# GPU Role

The AMD Radeon RX 7900 XTX is the decisive component in this system's 4K performance, and its specifications align with the measured results. The GPU operates with a base clock of 1929 MHz and a boost clock of 2498 MHz, with a game clock rated at 2365 MHz. These clocks, combined with 6144 shading units and 192 ROPs, deliver a pixel rate of 479.6 GPixel/s and a texture rate of 959.2 GTexel/s. The FP32 throughput of 61.39 TFLOPS positions this card as a high-end rasterization powerhouse, which is directly relevant to Microsoft Flight Simulator's demanding draw calls and terrain rendering.

The 24 GB of GDDR6 memory on a 384-bit bus provides 960.0 GB/s of bandwidth. This memory configuration is particularly important for Microsoft Flight Simulator, which streams vast amounts of terrain and scenery data. The 4K Ultra result of 64 FPS average suggests the GPU is utilizing its memory bandwidth effectively, but the 40.2% drop from 1080p Ultra to 4K Ultra indicates that the memory subsystem, while large, does not fully eliminate resolution-related bottlenecks. The GPU's RDNA 3.0 architecture with 96 ray accelerators also plays a role, though the measured data does not isolate ray tracing effects.

The GPU's benchmark profile shows a PassMark G3D score of 31238 and a 3DMark Steel Nomad DX12 score of 6841. These synthetic results place the RX 7900 XTX at the 64th percentile among all GPUs, which is notably lower than its real-world gaming performance might suggest. The nearest rival in the GPU benchmark list is the NVIDIA GeForce GTX 1060 3 GB with a delta of 0.4%, which is a misleading comparison given the massive generational and architectural gap. This anomaly in the benchmark database likely reflects the specific weighting of synthetic tests versus gaming workloads.

The GPU's 355 W TDP and suggested 750 W PSU rating indicate a power-hungry design that can sustain high clocks under load. The measured FPS data supports this: the card maintains playable frame rates even at 4K Ultra, which requires sustained boost clock operation. The 5 nm process node from TSMC with 57,700 million transistors on a 529 mm² die explains the high transistor density of 109.1M per mm², enabling the combination of high clock speeds and substantial compute resources.

# How This Combo Ranks

The combined ranking for this CPU-GPU pairing in Microsoft Flight Simulator is 325 out of 2996 tested combinations, placing it in the top 10.9% of all systems evaluated. This is a strong result, though not an elite one, given the specifications of both components. The Ryzen 9 9900X3D sits at the 91st percentile among all CPUs, while the RX 7900 XTX sits at the 64th percentile among GPUs, so the combo's overall rank reflects the GPU being the relatively weaker link.

The CPU's benchmark performance provides context for its contribution to the combo rank. In Cinebench R23, the 9900X3D scores 47737 in multi-core and 6739 in single-core, while Geekbench results show 22884 multi-core and 3041 single-core. These scores indicate a CPU that excels in both heavily threaded and lightly threaded workloads, which is relevant for a flight simulator that can use multiple cores for physics, AI, and terrain processing. The 3DMark 16-thread score of 12490 and max-thread score of 13795 further confirm strong multi-threading capabilities.

The GPU's percentile ranking of 64th is the constraining factor in this combo's overall position. While the RX 7900 XTX delivers excellent raw performance in the measured FPS data, its synthetic benchmark average of 19410 is only 0.4% higher than the NVIDIA GeForce GTX 1060 3 GB, which is an absurd comparison that suggests the database's GPU percentile metric is not well-calibrated for modern high-end cards. This discrepancy likely drags down the combo's rank calculation despite the strong real-world gaming results.

Among the CPU's nearest rivals, the Intel Core Ultra 5 245KF scores 55093 average with a -0.6% delta, meaning the 9900X3D is essentially tied with it in CPU benchmarks. The Intel Core Ultra 5 245K trails by 1.3%, the Intel Xeon 6505P by 2%, and the Intel Core i7-14700F by 2.1%. These small deltas suggest that the CPU is not the differentiator in this combo's rank; rather, the GPU's benchmark standing pulls the overall position down relative to systems with faster GPUs.

# FAQ

Q: What is the highest average FPS achievable with this combo at 4K?

A: The highest 4K average FPS is 114, achieved with Low settings. Medium produces 89 FPS, High produces 67 FPS, and Ultra produces 64 FPS.

Q: How does the 1080p Ultra performance compare to 4K Ultra?

A: At 1080p Ultra, the combo averages 107 FPS, while at 4K Ultra it averages 64 FPS. This represents a 40.2% reduction in average frame rate when moving from 1080p to 4K at Ultra settings.

Q: Which settings preset provides the most consistent frame times at 1440p?

A: The Medium preset at 1440p is the only one with complete min/max data, showing an average of 120 FPS with a minimum of 102 and maximum of 138. This 36 FPS spread indicates reasonable consistency, though the lack of min/max data for other presets prevents direct comparison.

Q: Is the CPU or GPU more likely to bottleneck at 1080p Low?

A: At 1080p Low, the combo achieves 192 FPS average, which is exceptionally high. Given that the CPU scores 47737 in Cinebench R23 multi-core and has 12 cores and 24 threads, it is unlikely to be the primary bottleneck at this resolution; the GPU's 24 GB memory and high bandwidth are more than sufficient for this workload.

Q: How does this combo rank among all tested systems for this game?

A: The combo ranks 325th out of 2996 tested combinations, placing it in the top 10.9% of all systems evaluated for Microsoft Flight Simulator.

Q: What is the GPU's synthetic benchmark strength relative to its gaming performance?

A: The GPU's PassMark G3D score is 31238, and its average benchmark score is 19410, placing it at the 64th percentile. However, its nearest rival in the database is the NVIDIA GeForce GTX 1060 3 GB with a 0.4% delta, which is wildly inconsistent with the measured 4K gaming performance of 67 FPS on High settings.

# Settings Recommendations

Based on the measured FPS data, the optimal settings preset depends on the target resolution and frame rate preference. At 1920x1080, all presets deliver playable performance, with Low at 192 FPS, Medium at 149 FPS, High at 112 FPS, and Ultra at 107 FPS. The gap between High and Ultra is only 4.5%, making Ultra the recommended choice for 1080p users who want maximum visual quality without a meaningful performance penalty. The 107 FPS average at 1080p Ultra is well above the 60 FPS threshold and provides headroom for demanding scenes.

At 2560x1440, the Medium preset stands out as the balanced recommendation. The 120 FPS average with a minimum of 102 FPS ensures smooth gameplay even during complex flight scenarios, and the 102 FPS minimum is comfortably above the 60 FPS threshold. High at 91 FPS and Ultra at 86 FPS are also viable, with the latter offering only a 5.5% reduction from High. For users prioritizing frame rate stability, Medium's documented minimum of 102 FPS provides the strongest guarantee, while Ultra at 86 FPS average remains playable but lacks min/max data to confirm consistency.

At 3840x2160, the choice is more constrained. Medium yields 89 FPS average with a minimum of 76 FPS, which is the only 4K preset with reliable worst-case data. High at 67 FPS and Ultra at 64 FPS are both above 60 FPS on average, but the lack of min FPS data introduces uncertainty about potential dips. The 4K Medium setting's verified minimum of 76 FPS makes it the safest choice for 4K users, as it guarantees a comfortable margin above the 60 FPS threshold. Ultra at 64 FPS is tempting for maximum fidelity, but the 25 FPS gap between Medium and Ultra averages suggests diminishing returns.

The data clearly shows that Medium is the sweet spot across all three resolutions. At 1080p, it delivers 149 FPS; at 1440p, 120 FPS; and at 4K, 89 FPS. This preset provides the best combination of average performance and documented frame time consistency, as it is the only preset where min/max data is available at every resolution. For users who prioritize visual fidelity over raw frame rates, Ultra at 1080p (107 FPS) and High at 1440p (91 FPS) are reasonable alternatives, but the Medium preset's verified minimums make it the recommended default.

# CPU Role

The AMD Ryzen 9 9900X3D's contribution to Microsoft Flight Simulator performance is substantial, particularly at lower resolutions where the GPU is less stressed. The CPU features 12 cores and 24 threads based on the Zen 5 architecture, with a base clock of 4.40 GHz and a boost clock of 5.50 GHz. The 128 MB of L3 cache is a defining characteristic, providing ample capacity for the flight simulator's frequently accessed terrain and aircraft data. The 4 nm process node from TSMC with 16,630 million transistors on a 2x 70.6 mm² die configuration enables the high clock speeds and efficient power draw of 120 W TDP.

The CPU's benchmark results demonstrate its multi-threading capability. The Cinebench R23 multi-core score of 47737 and PassMark multithread score of 56154 indicate strong parallel performance across all 24 threads. The 3DMark max-thread score of 13795 and 16-thread score of 12490 show that scaling continues beyond 16 threads, which is relevant for a simulator that can distribute workloads across multiple cores. The single-thread performance is equally impressive, with a Cinebench R23 single-core score of 6739 and a Geekbench single-core score of 3041, ensuring that the main simulation thread is not a bottleneck.

The CPU's 91st percentile ranking among all processors is reflected in the measured FPS data at 1080p. The 192 FPS average at Low settings and 112 FPS at High settings suggest that the CPU can feed the GPU with enough draw calls to maintain high frame rates, even if the GPU is not fully saturated at these settings. The 5.50 GHz boost clock provides the raw single-thread speed needed for the game's primary simulation loop, while the 24 threads handle secondary tasks like AI traffic, weather, and physics.

The memory support for DDR5 with dual-channel configuration and 89.6 GB/s bandwidth complements the CPU's cache design. The L3 cache of 128 MB is particularly beneficial for flight simulation, as it can hold significant portions of the scenery data being streamed, reducing the need for slower main memory access. The CPU's PCIe Gen 5 support with 24 lanes ensures high-bandwidth communication with the GPU, though the RX 7900 XTX uses PCIe 4.0 x16, which is backward compatible.

The CPU's nearest rivals in benchmark scores are all within 2.1% of its average score of 54762, indicating that the 9900X3D is competitively positioned but not dominant in raw compute. However, the 3D V-Cache technology, implied by the "X3D" designation and 128 MB L3, likely provides gaming-specific advantages that generic benchmark scores do not fully capture. The measured FPS in Microsoft Flight Simulator, particularly the 192 FPS at 1080p Low, suggests that the cache configuration translates into real-world gaming performance that exceeds what the raw benchmark deltas might predict.