Microsoft Flight Simulator

# Microsoft Flight Simulator: AMD Ryzen 9 8945HX + NVIDIA GeForce RTX 5080 Mobile

This combination of AMD's 16-core Ryzen 9 8945HX and NVIDIA's RTX 5080 Mobile produces a measured performance profile in Microsoft Flight Simulator that is strongly resolution-dependent, with the GPU becoming the primary constraint as pixel count rises. The data shows this combo ranks 984th out of 3714 tested combinations, placing it in the 74th percentile of all tested systems for this specific title.

Resolution Scaling

The measured FPS data reveals a clear and predictable scaling pattern as resolution increases from 1080p to 4K. At 1920x1080 with High settings, the system delivers 95 FPS average. Moving to 2560x1440 at the same settings drops performance to 76 FPS, a reduction of 20%. At 3840x2160, the average falls to 56 FPS, representing a 41% decrease from the 1080p figure and a 26% drop from 1440p.

This scaling behavior indicates that at 1080p, the system is not fully GPU-bound in this flight simulator. The 162 FPS average at Low settings on 1080p suggests significant headroom, while the 90 FPS at Ultra on the same resolution shows the settings load is beginning to engage the GPU more heavily. The gap between Low and Ultra at 1080p is 72 FPS, which narrows to 58 FPS at 1440p and 42 FPS at 4K. This convergence pattern is characteristic of a system transitioning from a more balanced CPU/GPU workload at lower resolutions to a GPU-limited scenario at higher pixel counts.

The 4K results are particularly telling. At Ultra settings, the system manages only 54 FPS average, while High settings yield 56 FPS. The difference between these two presets at 4K is minimal (2 FPS), suggesting that the GPU is saturated and additional settings increases provide diminishing returns. Medium settings at 4K produce 75 FPS, which is 39% higher than Ultra, indicating that the RTX 5080 Mobile has substantial capability but reaches its ceiling when pushed with maximum quality at this resolution.

FAQ

Q: What is the best resolution for smooth gameplay with this combo?

A: At 2560x1440 with High settings, the system produces 76 FPS average, which provides a balanced experience. For higher frame rates, 1920x1080 at Medium delivers 126 FPS average, while 1080p at High reaches 95 FPS.

Q: How does the RTX 5080 Mobile's memory configuration affect performance?

A: The GPU features 16 GB of GDDR7 memory on a 256-bit bus with 896.0 GB/s bandwidth. This large memory pool and high bandwidth support the texture-heavy environments of Microsoft Flight Simulator, particularly at 4K where the GPU becomes the limiting factor.

Q: What settings preset provides the largest performance jump?

A: The data shows that dropping from Ultra to High at 1080p only improves FPS from 90 to 95 (5.6% gain), while dropping from High to Medium at 1080p improves from 95 to 126 (32.6% gain). The biggest single step is from Medium to Low at 1080p, which goes from 126 to 162 FPS.

Q: Is the CPU or GPU more important for this game with this hardware?

A: At 1080p, the system achieves 162 FPS at Low settings, indicating the CPU can feed the GPU effectively. However, at 4K Ultra, the 54 FPS result and the small gap between High and Ultra suggest the GPU is the primary constraint at higher resolutions.

Q: What is the minimum FPS recorded across all tested configurations?

A: The lowest minimum FPS recorded is 64 FPS at 3840x2160 with Medium settings. The highest minimum is 107 FPS at 1920x1080 with Medium settings. Minimum FPS data is only available for the Medium preset at each resolution.

Q: How does this combo compare to other tested systems?

A: The combo ranks 984th out of 3714 tested combinations, placing it in the upper 27% of all tested systems for Microsoft Flight Simulator. The CPU ranks in the 95th percentile among all CPUs tested, while the GPU ranks in the 81st percentile among all GPUs.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread processor based on the Zen 4 architecture, manufactured on TSMC's 5 nm process. It operates with a base clock of 2.50 GHz and a boost clock of 5.40 GHz, with a TDP of 55 W. This Dragon Range chip supports DDR5 memory in dual-channel configuration, providing 83.2 GB/s of memory bandwidth.

In Microsoft Flight Simulator, the CPU's multithreaded capabilities are substantial. The Cinebench R23 multicore score of 42713 and Passmark multithread score of 51405 demonstrate strong parallel processing ability. The single-thread performance is also robust, with a Cinebench R23 single-core score of 6030 and a Passmark single-thread score of 3907. This combination of high core count and strong single-thread performance is important for a flight simulator that must handle both complex physics calculations and draw call generation.

The CPU's performance relative to rivals shows tight competition. The nearest rival, the Intel Core Ultra 9 285HX, has an average benchmark score of 76155 compared to the Ryzen's 76212, a difference of just 0.1%. The AMD EPYC Embedded 8224P and AMD Ryzen Threadripper PRO 9945WX are both 0.4% behind, while the AMD Ryzen 9 9950X3D is 0.6% ahead. These minimal deltas indicate that the 8945HX is competitively positioned within the high-end mobile processor market.

The data from the measured FPS suggests that at 1080p Low settings, the system reaches 162 FPS, which is likely near the CPU's capability ceiling for this simulation. The fact that 4K Ultra only drops to 54 FPS (a 67% reduction from 1080p Low) while 1080p Ultra achieves 90 FPS indicates that the CPU maintains adequate frame delivery even when the GPU is heavily loaded, but the GPU becomes the bottleneck at higher resolutions.

How This Combo Ranks

This specific combination of the AMD Ryzen 9 8945HX and NVIDIA GeForce RTX 5080 Mobile ranks 984th out of 3714 tested combinations for Microsoft Flight Simulator. This places the combo in the top 26.5% of all tested systems, which is a strong showing for a mobile platform.

The ranking is somewhat surprising given the individual component performance. The CPU sits in the 95th percentile among all CPUs, and the GPU in the 81st percentile among all GPUs. The combo ranking of 984th out of 3714 (73.5% of systems ranked higher) suggests that while both components are individually capable, the specific demands of Microsoft Flight Simulator may not fully leverage their combined potential, or that other combos with different balance points achieve better results in this title.

The GPU's nearest rivals provide context for its performance tier. The RTX 5080 Mobile has an average benchmark score of 38349, which is 0.1% ahead of the NVIDIA GeForce MX570 (38299) and 0.6% ahead of the RTX 4080 Mobile (38135). It trails the MX570 A by 0.9% and the AMD Radeon Pro 580X by 0.9%. These deltas are all within 1%, indicating the 5080 Mobile is closely matched with these other GPUs in synthetic benchmarks, though its real-world performance in this flight simulator may differ.

The measured FPS data shows that this combo can achieve high frame rates at lower resolutions, with 162 FPS at 1080p Low, but the ranking suggests that other systems may sustain higher performance at the more demanding settings that flight simulator enthusiasts typically prefer, such as 1440p or 4K Ultra.

Settings Recommendations

Based on the measured FPS data, the optimal settings configuration depends on the target resolution and desired frame rate. At 1920x1080, the High preset delivers 95 FPS average, which is smooth for a flight simulator. The Medium preset at 1080p provides 126 FPS, offering a 33% improvement over High with presumably modest visual compromises. For maximum visual fidelity at 1080p, Ultra achieves 90 FPS, which is still playable but shows the GPU is being pushed.

At 2560x1440, the High preset produces 76 FPS, which is adequate for most flight simulation scenarios. The Medium preset at 1440p delivers 102 FPS with a minimum of 86 FPS, providing a good balance of visual quality and smoothness. The Ultra preset at 1440p drops to 73 FPS, which remains playable but approaches the threshold where frame pacing might become noticeable in complex scenery.

For 4K gaming, the data suggests that High settings at 56 FPS are the practical ceiling for this combo. The Ultra preset at 54 FPS provides minimal visual improvement over High for a 2 FPS cost. Medium settings at 4K produce 75 FPS, which is the recommended choice for 4K users who prioritize frame rate over maximum visual fidelity. The Low preset at 4K achieves 96 FPS, but the visual quality drop is likely too severe for most flight simulator users.

The best overall experience appears to be 2560x1440 with High settings, offering 76 FPS with what is likely a good balance of visual quality and performance. For users with high-refresh-rate displays, 1080p at Medium (126 FPS) or Low (162 FPS) provides the smoothest experience.

Measured FPS Breakdown

The complete measured FPS dataset provides a comprehensive view of performance across all tested configurations.

At 3840x2160 resolution, the system achieves 96 FPS at Low settings, 75 FPS at Medium (with minimum 64 FPS and maximum 86 FPS), 56 FPS at High, and 54 FPS at Ultra. The progression from Low to Ultra shows a 78% reduction in frame rate, demonstrating the significant impact of settings at 4K.

At 2560x1440, the results are 131 FPS at Low, 102 FPS at Medium (minimum 86, maximum 117), 76 FPS at High, and 73 FPS at Ultra. The difference between High and Ultra at 1440p is just 3 FPS, suggesting that the Ultra preset's additional effects provide minimal performance cost but also likely minimal visual benefit at this resolution.

At 1920x1080, the system delivers 162 FPS at Low, 126 FPS at Medium (minimum 107, maximum 145), 95 FPS at High, and 90 FPS at Ultra. The 1080p results show the widest spread between Low and Ultra (72 FPS), indicating that the system has more headroom at this resolution and the settings have a more pronounced effect on performance.

The Medium preset is the only one with recorded minimum and maximum FPS values across all resolutions. At 1080p Medium, the minimum of 107 FPS and maximum of 145 FPS indicate a range of 38 FPS, suggesting some frame time variability. At 1440p Medium, the range is 31 FPS (86 to 117), and at 4K Medium, the range is 22 FPS (64 to 86). This narrowing range at higher resolutions further confirms the GPU becoming the limiting factor.

GPU Role

The NVIDIA GeForce RTX 5080 Mobile is built on the Blackwell 2.0 architecture, using the GB203 chip manufactured on TSMC's 5 nm process. It features 7680 shading units, 240 texture mapping units, and 96 raster operation units, along with 60 ray tracing cores and 240 tensor cores. The GPU operates at a base clock of 975 MHz and a boost clock of 1500 MHz.

The memory subsystem is a key strength: 16 GB of GDDR7 memory on a 256-bit bus provides 896.0 GB/s of bandwidth. This is particularly relevant for Microsoft Flight Simulator, which streams large amounts of terrain and texture data. The memory clock runs at 1750 MHz with 28 Gbps effective speed. The GPU's compute capabilities include 23.04 TFLOPS for both FP32 and FP16 operations, with a pixel rate of 144.0 GPixel/s and a texture rate of 360.0 GTexel/s.

The GPU's power envelope is notably low at 80 W TDP, which is significant for a mobile implementation. This allows the GPU to be integrated into thin-and-light chassis, but also means it must be efficient to achieve the measured performance levels. The 3DMark Steel Nomad DX12 score of 4952 and Passmark G3D score of 27711 provide synthetic benchmarks that align with the measured gaming performance.

In Microsoft Flight Simulator, the GPU's role becomes more pronounced as resolution increases. The measured data shows that at 4K, the difference between High and Ultra settings is only 2 FPS, indicating the GPU is fully saturated. The 16 GB VRAM capacity ensures that texture loading is not a limiting factor even at 4K Ultra, where detailed scenery can consume substantial memory.

The GPU's performance relative to its nearest rivals shows it is closely matched with the RTX 4080 Mobile (0.6% ahead in average benchmark score) but significantly behind what might be expected from a 50-series product. The 81st percentile ranking among all GPUs indicates that while this is a capable mobile GPU, it faces stiff competition from desktop parts and other high-end mobile implementations. In the context of this flight simulator, the 4K Ultra result of 54 FPS suggests that users seeking 60+ FPS at maximum settings may need to consider higher-performance GPU options or accept Medium settings at 4K.