Microsoft Flight Simulator

Resolution Scaling

The measured FPS data for Microsoft Flight Simulator with the Intel Core Ultra 7 265 and AMD Radeon RX 7900 XT reveals a classic resolution-scaling pattern, but with some notable deviations that indicate where the bottleneck shifts. At 1080p, the system delivers 177 FPS on Low settings, which drops to 143 FPS at 1440p and 106 FPS at 4K. That represents a 19% performance drop from 1080p to 1440p, followed by a further 26% drop from 1440p to 4K. The scaling is not perfectly linear, suggesting that at lower resolutions, the CPU is playing a significant role in limiting performance, while at 4K, the GPU becomes the primary constraint.

Looking at Medium settings, the pattern is similar but with a tighter spread. At 1080p Medium, the system produces 138 FPS, dropping to 111 FPS at 1440p (a 20% reduction) and 82 FPS at 4K (a further 26% reduction). The High preset shows 104 FPS at 1080p, 84 FPS at 1440p (19% drop), and 62 FPS at 4K (26% drop). Ultra settings follow the same trajectory: 99 FPS at 1080p, 80 FPS at 1440p (19% drop), and 59 FPS at 4K (26% drop). The consistency of these percentage drops across all four presets is striking — it indicates that the resolution scaling behavior is largely independent of the graphical workload being applied.

The 4K results are particularly telling for understanding the system's limitations. At 4K Ultra, the average FPS is 59, which is just below the 60 FPS threshold that many users consider smooth for flight simulation. The 4K High preset achieves 62 FPS, barely crossing that line. This suggests that at 4K, the Radeon RX 7900 XT is the limiting component, as the performance difference between High and Ultra at 4K is only 3 FPS (62 vs 59), indicating the GPU is running out of headroom rather than the CPU being unable to feed it.

The data also shows that the gap between Low and Ultra settings narrows as resolution increases. At 1080p, the difference between Low and Ultra is 78 FPS (177 vs 99). At 1440p, that gap shrinks to 63 FPS (143 vs 80). At 4K, the gap is just 47 FPS (106 vs 59). This compression at higher resolutions is a classic sign of GPU-bound operation — when the GPU is saturated, changing settings has less impact because the renderer is already working at full capacity. At 1080p, the CPU has more room to push higher frame rates when settings are lowered, which is why the Low preset sees such a large jump.

GPU Role

The AMD Radeon RX 7900 XT is the primary driver of the measured results in this configuration, and its specifications help explain why 4K performance settles where it does. The GPU features 20 GB of GDDR6 memory on a 320-bit bus, delivering 800.0 GB/s of memory bandwidth. For a game like Microsoft Flight Simulator, which streams vast amounts of terrain and photogrammetry data, this memory capacity and bandwidth are directly relevant to how smoothly the sim loads new scenery as the aircraft moves. The 20 GB allocation is substantial, and the data suggests it is sufficient for the Ultra preset at 4K, given that the 59 FPS average is not the result of texture thrashing but rather raw compute limitations.

Clock speeds on the RX 7900 XT are notable: base clock 1387 MHz, game clock 2025 MHz, and boost clock 2394 MHz. The boost behavior is what allows the card to maintain playable frame rates at 4K Ultra, where the 59 FPS average is achieved. The GPU's 5376 shading units and 192 ROPs provide the raw throughput needed for the sim's dense geometry and lighting calculations. The texture rate of 804.4 GTexel/s and pixel rate of 459.6 GPixel/s are high enough to handle the demanding draw calls that flight simulators generate over large landscapes.

The GPU's position in the benchmark database shows it in the 55th percentile of all GPUs, with an average benchmark score of 13745. Its nearest rival is the AMD Radeon 660M with a deltaPct of -0.5, meaning the RX 7900 XT scores about 0.5% lower. This is a surprisingly close margin, though the 660M is an integrated solution while the RX 7900 XT is a discrete flagship-class card. The data also shows a 1.5% lead over the AMD Radeon RX 9070 XT, which is interesting given that the 9070 XT is a newer product. These benchmark relationships do not directly translate to flight sim performance, but they contextualize the GPU's overall compute capability.

The 4K Medium preset provides the most complete data, with a min FPS of 70 and max of 94, averaging 82. This spread of 24 FPS indicates that the GPU's frame pacing is variable, which is typical for flight sim where the complexity of the scene can change dramatically as the view shifts from open sky to dense urban areas. The 1440p Medium preset shows a similar pattern: min 95, max 128, average 111. The consistency of these ranges across resolutions suggests the GPU is behaving predictably under load, with the variance being a function of scene complexity rather than thermal throttling or driver instability.

FAQ

Q: Is the Radeon RX 7900 XT capable of running Microsoft Flight Simulator at 4K?

A: Yes, the measured data shows the RX 7900 XT averages 62 FPS at 4K High and 59 FPS at 4K Ultra. The 4K Medium preset averages 82 FPS, so playable frame rates are achievable across all settings at 4K.

Q: What is the best resolution for this CPU and GPU combination?

A: The data shows 1440p provides the best balance, with High settings averaging 84 FPS and Ultra averaging 80 FPS. At 1440p, the system maintains above 60 FPS even at Ultra, while 4K Ultra dips to 59 FPS.

Q: How much performance is lost when moving from 1080p to 4K?

A: The drop is consistent across presets. At Low settings, performance falls from 177 FPS at 1080p to 106 FPS at 4K, a 40% reduction. At Ultra, it falls from 99 FPS to 59 FPS, also a 40% reduction.

Q: Does the 20 GB of VRAM make a difference at 4K Ultra?

A: The data indicates that 4K Ultra runs at 59 FPS average without apparent memory-related stutter, and the min FPS data for Medium (70 at 4K) suggests the memory capacity is not a limiting factor in these measurements.

Q: How does the Intel Core Ultra 7 265 compare to its nearest rivals?

A: The CPU scores 64640 on average, placing it 0.3% above the Intel Core Ultra 7 265F and 0.7% above the AMD EPYC 7343. It trails the AMD EPYC 4464P by 0.3% and the AMD EPYC 9124 by 0.7%.

Q: What is the frame time consistency like at 1440p Medium?

A: The 1440p Medium preset shows a min FPS of 95 and max FPS of 128, which is a 33 FPS spread. This indicates that while the average is 111 FPS, there is meaningful variance in frame times, likely due to scene complexity changes.

Measured FPS Breakdown

At 1920x1080, the system delivers its highest frame rates across all presets. The Low preset averages 177 FPS, making it the fastest measured configuration in the entire dataset. Medium averages 138 FPS with a min of 117 and max of 159. High averages 104 FPS, and Ultra averages 99 FPS. The 1080p results show a clear hierarchy where each step up in settings costs a meaningful amount of performance, but even at Ultra, the system remains well above 60 FPS. The difference between Low and Ultra at 1080p is 78 FPS, which is the largest absolute gap in the dataset.

Moving to 2560x1440, the frame rates remain strong but begin to compress. Low averages 143 FPS, which is still very high. Medium averages 111 FPS with a min of 95 and max of 128. High averages 84 FPS, and Ultra averages 80 FPS. The gap between Low and Ultra at 1440p is 63 FPS. The 1440p results show that High and Ultra are only 4 FPS apart (84 vs 80), suggesting that the Ultra preset adds visual quality without a significant performance penalty at this resolution. The Medium preset's min of 95 FPS indicates that even in demanding scenes, the system stays above 60 FPS comfortably.

At 3840x2160, the system finally shows its limits. Low averages 106 FPS, which is still quite playable. Medium averages 82 FPS with a min of 70 and max of 94. High averages 62 FPS, and Ultra averages 59 FPS. The gap between Low and Ultra at 4K narrows to 47 FPS. The most critical observation is that 4K Ultra dips below the 60 FPS threshold, while 4K High just barely crosses it. For users targeting 4K, the Medium preset at 82 FPS offers the most comfortable margin above 60 FPS, while Ultra will require accepting some frame rate variability.

The measured FPS data includes min and max values only for the Medium presets across all three resolutions. At 1080p Medium, the spread is 42 FPS (117 to 159). At 1440p Medium, the spread is 33 FPS (95 to 128). At 4K Medium, the spread is 24 FPS (70 to 94). This pattern shows that frame time consistency improves as resolution increases, which is counterintuitive but makes sense — at higher resolutions, the GPU is more consistently saturated, reducing the impact of scene complexity spikes that can cause frame drops at lower resolutions where the CPU might introduce variability.

CPU Role

The Intel Core Ultra 7 265 is a 20-core, 20-thread processor based on the Arrow Lake architecture, built on a 3 nm process by TSMC. It runs at a base clock of 2.40 GHz and boosts to 5.30 GHz. The CPU's benchmark results show strong single-thread performance with a Cinebench R23 single-core score of 5960, and robust multi-thread performance with a multi-core score of 42216. In the Passmark suite, the CPU scores 4689 in single-thread tests and 49682 in multi-thread tests, with a physics score of 2923 that is directly relevant to simulation workloads.

In Microsoft Flight Simulator, the CPU's role is significant but secondary to the GPU at higher resolutions. The data shows that at 1080p Low, the system achieves 177 FPS, which is likely CPU-limited — the GPU could probably render more frames, but the CPU cannot feed it fast enough. At 1080p Ultra, the frame rate drops to 99 FPS, indicating that the GPU is now the limiting factor even at 1080p when settings are maxed out. This suggests that the Core Ultra 7 265 provides sufficient headroom for the RX 7900 XT at most settings, except for the very lowest presets at 1080p.

The CPU's 30 MB of shared L3 cache and 3 MB per-core L2 cache are relevant for flight sim, which has large working sets of terrain data. The dual-channel DDR5 memory support provides 102.4 GB/s of memory bandwidth, which is adequate for feeding the CPU's 20 cores. The CPU's overall benchmark performance places it in the 93rd percentile of all CPUs, with an average benchmark score of 64640. Its nearest rival, the AMD EPYC 4464P, scores 64823, which is 0.3% higher. The Intel Core Ultra 7 265F is effectively identical with a 0.3% lower score, confirming that the non-F variant's integrated graphics are not a performance factor in the CPU's compute benchmarks.

The Passmark data compression score of 522983 and data encryption score of 40456 indicate strong general-purpose compute, which is useful for the background tasks that flight sim runs while rendering. The find prime numbers score of 418 is notably low, which is typical for newer architectures that prioritize other workloads. The floating point math score of 172776 and integer math score of 134773 show balanced compute, which helps maintain consistent frame delivery in the sim's complex physics and weather calculations.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend heavily on the target resolution. At 1080p, the Ultra preset at 99 FPS is the best choice — it provides the highest visual quality while maintaining a frame rate well above 60 FPS. The 21 FPS difference between Ultra and High at 1080p (99 vs 104) is minor, so there is little reason to drop from Ultra unless the user wants additional headroom for recording or streaming.

At 1440p, the Ultra preset at 80 FPS is the recommended configuration. The difference between High and Ultra at 1440p is only 4 FPS (84 vs 80), meaning the Ultra preset delivers substantially better visual quality for a negligible performance cost. The Medium preset at 111 FPS is available for users who prioritize frame rate, but the data shows that even Ultra stays comfortably above 60 FPS at 1440p.

At 4K, the situation is more nuanced. The Ultra preset averages 59 FPS, which is below the 60 FPS threshold. The High preset averages 62 FPS, just barely crossing that line. The Medium preset averages 82 FPS, providing a substantial margin. For 4K users, the Medium preset is the recommended choice — it delivers 82 FPS with a min of 70, ensuring that even in the most demanding scenes, the frame rate does not drop below 60. The High preset at 62 FPS is a viable alternative for those who prioritize visual quality, but the risk of dropping below 60 FPS in complex scenes is real.

The data shows that the jump from Medium to High at 4K costs 20 FPS (82 to 62), while the jump from High to Ultra costs only 3 FPS (62 to 59). This suggests that the High preset offers diminishing returns relative to its cost, and users who want the best experience at 4K should either accept Medium for smoothness or Ultra for maximum quality, with High being a middle ground that may not justify its performance penalty. Overall, the measured results indicate that the sweet spot for this system is 1440p Ultra, which balances the visual fidelity of the Ultra preset with a comfortable 80 FPS average.