Microsoft Flight Simulator

# Microsoft Flight Simulator: AMD Ryzen 9 8945HX + NVIDIA GeForce RTX 4070

This combination of AMD's 16-core Ryzen 9 8945HX and NVIDIA's GeForce RTX 4070 delivers a playable but not exceptional experience in Microsoft Flight Simulator, ranking in the 48th percentile of all tested combos (1564th out of 2996). The data shows that this system is consistently CPU-limited at lower resolutions, while the GPU becomes the primary constraint at 4K Ultra settings. The sweet spot for this pairing is 1080p Medium, where the average frame rate of 93 FPS provides smooth gameplay with acceptable visual fidelity, though 1440p Medium at 75 FPS offers a better balance of immersion and performance for flight simulation enthusiasts.

Settings Recommendations

The measured results across four presets at three resolutions reveal a clear pattern: Medium settings provide the best overall experience for this hardware combination. At 1080p, Medium delivers 93 FPS average with a minimum of 79 FPS and maximum of 107 FPS, which represents a 40% improvement over High settings (70 FPS) while maintaining smooth frame pacing. The jump from Medium to High at 1080p costs 23 FPS (93 to 70), a 25% performance penalty that is difficult to justify given the visual gains in a flight simulator where terrain detail matters less than cockpit readability and smooth camera movement.

At 1440p, Medium again emerges as the optimal choice with 75 FPS average, a 34% improvement over High's 56 FPS. The minimum of 64 FPS at 1440p Medium stays above the 60 FPS threshold that most flight sim enthusiasts consider the floor for acceptable gameplay, making this the highest-resolution setting that consistently maintains playable frame rates. High at 1440p drops to 56 FPS average, which introduces noticeable stutter during complex scenery loads and dense urban flyovers.

The 4K results confirm that this combo cannot handle Ultra or High presets at that resolution. Medium at 4K produces 55 FPS average with a minimum of 47 FPS, which is borderline playable but will experience noticeable hitches during rapid camera panning. Low settings are the only reliable option at 4K, delivering 71 FPS, but the visual compromise is severe for a game that relies heavily on atmospheric rendering and distant terrain detail.

Ultra settings are not recommended at any resolution. At 1080p Ultra, the system produces 66 FPS, only 4 FPS less than High but with significantly higher visual demands that could cause frame drops during weather system updates. At 1440p Ultra, the 54 FPS average falls below the 60 FPS comfort zone, and at 4K Ultra, the 40 FPS average is simply too low for a game requiring precise control inputs. The data strongly suggests that Medium settings at 1440p offer the best compromise between visual quality and performance for this hardware combination.

GPU Role

The NVIDIA GeForce RTX 4070 brings 12 GB of GDDR6X memory on a 192-bit bus, providing 504.2 GB/s of memory bandwidth. This memory configuration is sufficient for Microsoft Flight Simulator's texture streaming demands at 1080p and 1440p, but the 4K Ultra results (40 FPS) suggest that the 12 GB capacity becomes a limiting factor when loading the highest-resolution terrain and aircraft textures. The GPU's 5888 shading units and 46 RT cores, built on the Ada Lovelace architecture at 5 nm, deliver strong raw compute but struggle with this game's specific rendering pipeline at extreme settings.

The clock behavior matters here. With a base clock of 1920 MHz and boost clock of 2475 MHz, the RTX 4070 maintains high frequencies under load, but the frame rate scaling across settings reveals that the GPU is not the primary bottleneck at most configurations. At 1080p, the difference between Low (119 FPS) and Ultra (66 FPS) is 53 FPS, indicating the GPU has headroom to spare until Ultra settings push its limits. The 29.15 TFLOPS of FP32 compute and 455.4 GTexel/s texture rate are adequate for this game's needs, but the 64 ROPs (render output units) may limit fill-rate-dependent effects at 4K.

The GPU's performance percentile of 81st among all GPUs, with an average benchmark score of 37648, places it in the upper tier of graphics cards. However, its nearest rival, the NVIDIA GeForce RTX 4080 Mobile, is 1.3% faster, and the AMD Radeon RX Vega 56 is 0.4% slower. In Microsoft Flight Simulator specifically, the RTX 4070's memory bandwidth of 504.2 GB/s proves adequate for the game's streaming architecture, but the 4K Ultra result of 40 FPS indicates that the 192-bit memory interface limits performance at the highest resolutions.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals a system that transitions from CPU-bound at low resolutions to GPU-bound at 4K. At Low settings, the average frame rate drops from 119 FPS at 1080p to 96 FPS at 1440p (a 19% decrease) and then to 71 FPS at 4K (a 26% further decrease). This scaling pattern suggests that even at Low settings, the GPU becomes progressively more important as resolution increases, but the CPU still has significant influence at 1080p.

At Medium settings, the scaling is more pronounced: 93 FPS at 1080p drops to 75 FPS at 1440p (a 19% decrease) and then to 55 FPS at 4K (a 27% further decrease). The minimum frame rates at Medium tell a critical story: 79 FPS at 1080p, 64 FPS at 1440p, and 47 FPS at 4K. The 4K minimum of 47 FPS is dangerously close to the 45 FPS threshold where flight simulators become difficult to control during approach and landing sequences.

High settings show the most dramatic scaling: 70 FPS at 1080p drops to 56 FPS at 1440p (a 20% decrease) and then to 42 FPS at 4K (a 25% further decrease). The 4K High result of 42 FPS is only 2 FPS above the Ultra result of 40 FPS, suggesting that the GPU is hitting a hard performance ceiling at 4K regardless of preset. This indicates that at 4K, the RTX 4070's 12 GB memory capacity and 504.2 GB/s bandwidth become the limiting factors, not the specific settings chosen.

The resolution scaling analysis clearly shows that 1440p is the optimal resolution for this combo. At Medium settings, 1440p delivers 75 FPS with a minimum of 64 FPS, which is 20 FPS (27%) faster than 4K Medium and only 18 FPS (19%) slower than 1080p Medium. The 1440p Medium configuration provides the best resolution-to-performance ratio, maintaining playable frame rates while offering significantly more visual detail than 1080p.

How This Combo Ranks

The combo's rank of 1564 out of 2996 tested combinations places it in the 48th percentile, meaning roughly half of all tested systems perform better in Microsoft Flight Simulator. This middling rank is somewhat surprising given the individual components' strong benchmark scores. The CPU's 95th percentile ranking among all CPUs (based on an average benchmark score of 76212) and the GPU's 81st percentile ranking (average benchmark score of 37648) suggest that both components are individually capable, but their combination in this workload does not achieve the synergy seen in higher-ranked systems.

The CPU's nearest rivals provide context for its performance potential. The Intel Core Ultra 9 285HX is 0.1% faster on average, while the AMD Ryzen 9 9950X3D is 0.6% faster. The AMD EPYC Embedded 8224P and AMD Ryzen Threadripper PRO 9945WX are both 0.4% slower. These negligible deltas (all within 1%) indicate that the Ryzen 9 8945HX is competitive with the absolute fastest processors available, yet the combo rank suggests that Microsoft Flight Simulator may not fully utilize the CPU's 16 cores and 32 threads.

The GPU's rival comparisons show a similar pattern. The NVIDIA Tesla P4 is 0.1% slower, the AMD Radeon RX Vega 56 is 0.4% slower, and the AMD Radeon PRO W6400 is 1.3% slower. The NVIDIA GeForce RTX 4080 Mobile is 1.3% faster. These small differences indicate that the RTX 4070 is well-positioned among its peers, but the 48th percentile combo rank suggests that the game's performance is more dependent on other factors, likely the CPU's single-thread performance and the game's optimization for specific hardware architectures.

The gap between individual component performance and combined game performance highlights Microsoft Flight Simulator's unique requirements. With a combo rank in the middle of the pack, this system will handle the game adequately but will not deliver the exceptional frame rates seen in top-ranked configurations. Users seeking higher performance would need to look at systems with faster single-thread CPU performance or GPUs with more memory bandwidth.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread processor based on the Zen 4 architecture (Dragon Range codename), manufactured on TSMC's 5 nm process. With a base clock of 2.50 GHz and boost clock of 5.40 GHz, this CPU demonstrates exceptional multi-threaded capability, achieving a Cinebench R23 multi-core score of 42713 and a single-core score of 6030. The 64 MB of L3 cache (1 MB L2 per core) helps with the game's asset streaming, while the 83.2 GB/s dual-channel DDR5 memory bandwidth supports the large data transfers required by flight simulation.

The CPU's benchmark results reveal its strengths and potential limitations. The Cinebench R20 multi-core score of 17939 and single-core score of 2532 indicate strong performance in both heavily threaded and lightly threaded workloads. However, Microsoft Flight Simulator is known to be sensitive to single-thread performance, and the game's frame generation and physics calculations may not scale perfectly with 16 cores. The PassMark single-thread score of 3907 and multi-thread score of 51405 confirm that this CPU excels at parallel workloads, but the game's performance at 1080p (119 FPS on Low) suggests that the CPU is not fully utilized at lower resolutions.

The CPU's 95th percentile ranking among all CPUs, with an average benchmark score of 76212, places it among the top 5% of processors. Its nearest rival, the Intel Core Ultra 9 285HX, is essentially tied at 0.1% faster, while the AMD Ryzen 9 9950X3D is 0.6% faster. The AMD EPYC Embedded 8224P and AMD Ryzen Threadripper PRO 9945WX are both 0.4% slower, showing that this mobile processor competes with desktop and server parts in raw compute.

In Microsoft Flight Simulator, the CPU's role becomes evident when examining the frame rate differences between resolutions. At 1080p Low, the system achieves 119 FPS, which is 67% higher than the 71 FPS at 4K Low. This 48 FPS difference at Low settings suggests that the CPU is the limiting factor at 1080p, as the GPU has sufficient headroom to render more frames. The fact that 1080p Ultra (66 FPS) is only 14 FPS slower than 1080p High (70 FPS) but 53 FPS slower than 1080p Low (119 FPS) indicates that the CPU can keep up with GPU demands until the highest settings are enabled.

The 5.40 GHz boost clock is particularly important for this game. Microsoft Flight Simulator's main thread handles flight dynamics and AI, which benefit from high single-thread performance. The Cinebench R15 single-core score of 607 and R20 single-core score of 2532 demonstrate that this CPU has competitive single-thread capability, but the 48th percentile combo rank suggests that the game may not be fully optimized for Zen 4 architecture. The 32 threads help with the game's background loading and scenery streaming, but the game's core simulation loop appears to be the bottleneck at higher frame rates.

FAQ

Q: What is the best settings preset for this hardware in Microsoft Flight Simulator?

A: Medium settings at 1440p provide the optimal experience, delivering 75 FPS average with a minimum of 64 FPS and maximum of 86 FPS. This configuration offers a 34% performance improvement over High settings at the same resolution (56 FPS) while maintaining frame rates above the 60 FPS threshold for smooth gameplay.

Q: How does the RTX 4070's 12 GB VRAM affect 4K performance?

A: At 4K Medium, the system produces 55 FPS average with a minimum of 47 FPS, while 4K Ultra drops to 40 FPS. The 12 GB of GDDR6X memory with 504.2 GB/s bandwidth appears insufficient for the highest-resolution textures, as even High settings at 4K only achieve 42 FPS, suggesting a hard performance ceiling at this resolution.

Q: Is this combo CPU-limited or GPU-limited at 1080p?

A: The data indicates CPU limitation at 1080p. Low settings produce 119 FPS, while High settings drop to 70 FPS and Ultra to 66 FPS. The relatively small difference between High and Ultra (4 FPS) compared to the large gap between Low and High (49 FPS) suggests the CPU can push frames effectively until GPU demands increase significantly.

Q: How does this combo rank compared to other tested systems?

A: This combination ranks 1564th out of 2996 tested combos, placing it in the 48th percentile. Despite the CPU ranking in the 95th percentile among all CPUs and the GPU in the 81st percentile, the game-specific performance is middling, indicating Microsoft Flight Simulator's unique optimization requirements.

Q: What is the minimum FPS at 1440p Medium, and is it playable?

A: The minimum FPS at 1440p Medium is 64 FPS, with an average of 75 FPS and maximum of 86 FPS. This minimum stays above the 60 FPS threshold, ensuring consistent gameplay without significant stuttering during complex scenery loading or weather changes.

Q: Should users choose 1080p Ultra or 1440p Medium for better image quality?

A: The data shows 1440p Medium (75 FPS) is 9 FPS faster than 1080p Ultra (66 FPS) while offering higher native resolution. The 1440p Medium configuration provides a better balance of visual fidelity and performance, as the resolution increase more than compensates for the lower preset quality in terms of perceived image sharpness.