Microsoft Flight Simulator

Microsoft Flight Simulator presents one of the most demanding real-time rendering workloads in the benchmark database, and this particular pairing of the Intel Core Ultra 7 265K with the NVIDIA GeForce RTX 4080 produces a fascinating dataset. The measured frames per second across three resolutions and four quality presets reveal a system that is clearly capable of high refresh rates at 1080p but begins to show the strain of this simulator's complex rendering pipeline as resolution climbs. The combination ranks 215th out of 3714 tested combos, placing it firmly in the top percentile of systems, yet the scaling patterns suggest that neither component is a simple bottleneck. Instead, the data points to a nuanced interaction between the CPU's 20-core architecture and the GPU's 16 GB of GDDR6X memory, where the game's engine dynamically shifts load depending on the selected settings.

Resolution Scaling

The FPS drop from 1080p to 4K is substantial but not uniform across all settings, which tells a clear story about what limits performance. At Low settings, the average frame rate falls from 211 FPS at 1920x1080 to 170 FPS at 2560x1440, a drop of 41 FPS, and then further to 125 FPS at 3840x2160. That represents a 40.8% reduction from 1080p to 4K. The pattern at Ultra settings is even more telling: 117 FPS at 1080p, 95 FPS at 1440p, and 70 FPS at 4K, a 40.2% decrease. The consistency of this percentage across presets suggests that resolution scaling is primarily a GPU-bound exercise, as the pixel count quadruples from 1080p to 4K, and the frame rate drops by roughly two-fifths rather than the full 75% that pure pixel throughput would dictate.

Look closer at the Medium preset, which is the only one with min and max FPS data. At 1080p, the average is 164 FPS with a minimum of 139 and a maximum of 188. Moving to 1440p, that average drops to 132 FPS, with min and max of 112 and 152 respectively. At 4K, the average falls to 97 FPS, with a narrow band of 83 to 112. The range between min and max shrinks as resolution increases, from a 49 FPS spread at 1080p to a 29 FPS spread at 4K. This compression of the frame time variance indicates that at higher resolutions, the system becomes more consistently GPU-limited, reducing the occasional CPU-driven spikes that cause larger FPS fluctuations at lower resolutions.

The fact that Low settings at 1080p reaches 211 FPS while Ultra at the same resolution only achieves 117 FPS highlights how much headroom the CPU provides when the GPU workload is lightened. However, the 4K Ultra result of 70 FPS, which is just above the 60 FPS playability threshold, suggests that this is where the RTX 4080's 16 GB memory and 256-bit bus become the defining factor. The data implies that the limiting component shifts from the CPU at 1080p to the GPU at 4K, with the crossover occurring somewhere around 1440p where the FPS differences between presets begin to compress.

How This Combo Ranks

The combo ranking of 215 out of 3714 tested combinations places this system in the top 5.8% of all tested hardware pairings for Microsoft Flight Simulator. This is a strong result, but the percentile position relative to the CPU and GPU's individual benchmarks is revealing. The Core Ultra 7 265K sits at the 94th percentile among all CPUs, while the RTX 4080 is at the 86th percentile among all GPUs. The combo's rank of 215 suggests that the game is more sensitive to GPU performance than CPU, as the lower-ranked GPU pulls the overall system down slightly from what the CPU alone might achieve.

Comparing the CPU to its nearest rivals, the Core Ultra 7 265K has an average benchmark score of 70879, which is 0.2% lower than the Intel Xeon 6511P's 71051, and 1% higher than the Intel Core i7-14700KF's 70163. The AMD Ryzen 7 9700F trails by 1.3% with a score of 69996. These margins are small, indicating that the CPU is not a differentiator in this game's performance envelope. The GPU tells a similar story: the RTX 4080's average score of 54247 is just 0.1% below the RTX 4080 SUPER's 54209, and 2.6% below the AMD Radeon RX 6750 GRE 12 GB's 55698.

What this ranking data implies is that the combo's position is driven more by the combination's balanced capabilities than by any single component's dominance. The 215th rank out of 3714 means there are 214 combos that outperform it, likely featuring higher-tier GPUs like the RTX 4090 or newer architectures. Yet, given that the RTX 4080 is listed as end-of-life and the CPU is from the current Arrow Lake generation, this ranking represents a mature, well-matched pairing that delivers consistent results across the board.

GPU Role

The NVIDIA GeForce RTX 4080's role in this game's performance is defined by its 16 GB of GDDR6X memory and 716.8 GB/s of bandwidth. With a 256-bit memory bus and a boost clock of 2505 MHz, the GPU delivers 48.74 TFLOPS of FP32 compute, which is substantial but not unlimited. The 4K Ultra result of 70 FPS suggests that the simulator's texture streaming and draw call processing are heavily dependent on memory bandwidth, as the 716.8 GB/s figure becomes the limiting factor when pushing 8.3 million pixels.

The GPU's 9728 shading units and 304 texture mapping units provide ample geometry processing power, but the measured data shows that the RTX 4080's performance scales almost linearly with resolution at High settings: 123 FPS at 1080p, 99 FPS at 1440p, and 73 FPS at 4K. This pattern indicates that the GPU is the primary bottleneck at higher resolutions, with each resolution step reducing frame rate by roughly 20-25%. The fact that the 4K High result of 73 FPS is only 3 FPS higher than the 4K Ultra result of 70 FPS suggests that the GPU is hitting a memory bandwidth ceiling that additional shading power cannot overcome.

The RTX 4080's 76 ray tracing cores are present, but Microsoft Flight Simulator's traditional rasterization pipeline appears to benefit more from raw fill rate. The pixel rate of 280.6 GPixel/s and texture rate of 761.5 GTexel/s are the specifications that correlate with the measured FPS deltas. When compared to its nearest rival, the RTX 4080 SUPER, which scores 0.1% higher in synthetic benchmarks, the measured game performance is essentially identical, confirming that the 4080's architecture is well-suited to this workload.

FAQ

Q: Why does the 4K Ultra preset only achieve 70 FPS while the 1080p Low preset hits 211 FPS?

A: The data shows a 67% reduction in frame rate from 1080p Low to 4K Ultra. This is because the GPU's 716.8 GB/s memory bandwidth becomes saturated at 4K, while at 1080p Low, the CPU's 20 cores can feed frames faster than the GPU can render them, creating a CPU-bound scenario that allows for higher FPS.

Q: Is the CPU or GPU more responsible for the performance difference between Medium and Ultra settings?

A: At 1080p, the difference between Medium (164 FPS) and Ultra (117 FPS) is 47 FPS, but at 4K, the difference narrows to just 27 FPS (97 vs 70). This indicates that at 4K, the GPU is the limiting factor, as the additional CPU workload from Ultra settings cannot be compensated for by the GPU's limited bandwidth.

Q: How does this combo compare to other configurations in the database?

A: This combination ranks 215th out of 3714 tested combos for Microsoft Flight Simulator. The CPU is at the 94th percentile of all CPUs, while the GPU is at the 86th percentile, suggesting that the ranking is more influenced by GPU performance in this game.

Q: What is the impact of the RTX 4080's 16 GB VRAM on 4K performance?

A: The 4K results across all presets (125 FPS Low, 97 FPS Medium, 73 FPS High, 70 FPS Ultra) show that 16 GB is sufficient for this game, as the frame rate drops are consistent with memory bandwidth limits rather than capacity issues. The game does not appear to be VRAM-starved at these settings.

Q: Should I use the Medium preset for competitive play?

A: The Medium preset at 1080p provides 164 FPS with a minimum of 139 FPS, which is well above the 60 FPS threshold for smooth gameplay. At 4K, Medium still delivers 97 FPS, making it the best balance of visual quality and frame rate stability.

Q: Why is the FPS range narrower at higher resolutions?

A: The Medium preset shows a 49 FPS spread at 1080p (139-188) but only a 29 FPS spread at 4K (83-112). This indicates that at 4K, the GPU is consistently the bottleneck, reducing the CPU-induced frame time spikes that cause wider FPS ranges at lower resolutions.

CPU Role

The Intel Core Ultra 7 265K's 20 cores and 20 threads, with a boost clock of 5.50 GHz, provide the compute headroom necessary for Microsoft Flight Simulator's complex simulation logic. The CPU's base clock of 3.90 GHz and 30 MB of shared L3 cache are critical for handling the game's single-threaded flight model calculations, while the 20 cores manage the multithreaded terrain streaming and AI traffic. The measured data shows that at 1080p Low, the system reaches 211 FPS, indicating that the CPU is not a limiting factor at lower resolutions and settings.

The CPU's benchmark scores reinforce this interpretation. In Cinebench R23, the multicore score of 35850 and single-core score of 2020 demonstrate strong per-core performance, which is essential for a game that still has significant single-threaded components. The Geekbench scores of 23085 (multicore) and 2713 (single-core) further confirm this balance. The CPU's nearest rival, the Intel Xeon 6511P, scores 0.2% higher on average, but the Core Ultra 7 265K's superior single-thread performance (as shown by the 2020 R23 single-core score) likely benefits this game more than raw multicore throughput.

The 102.4 GB/s memory bandwidth and DDR5 support are also relevant, as Microsoft Flight Simulator streams large terrain data. The CPU's 20 PCIe Gen 5 lanes provide sufficient bandwidth to the GPU, though the RTX 4080 uses PCIe 4.0 x16, which is not a bottleneck given the measured FPS. The CPU's integrated Arc Xe-LPG Graphics 64EU is present but irrelevant for this discrete GPU configuration, yet it does indicate the CPU's modern architecture.

Settings Recommendations

The measured FPS data provides clear guidance on which preset to select based on resolution and desired frame rate. At 1080p, the Ultra preset delivers 117 FPS, which is smooth, but the Medium preset at 164 FPS offers a 40% performance improvement with only a modest visual downgrade. For players targeting 4K, the Ultra preset at 70 FPS is playable, but the High preset at 73 FPS provides essentially the same experience with slightly less visual fidelity, suggesting that the Ultra preset's additional settings are not worth the performance cost at this resolution.

The Medium preset emerges as the best overall choice across all resolutions. At 1440p, it delivers 132 FPS, which is 33 FPS higher than High (99 FPS) and 37 FPS higher than Ultra (95 FPS). The min FPS data for Medium shows that even at 4K, the minimum of 83 FPS is above the 60 FPS threshold, ensuring consistent gameplay without stutters. For users with high refresh rate monitors at 1080p, the Low preset's 211 FPS is ideal for maximum frame rates, but the visual quality trade-off is significant.

The data suggests that the Ultra preset is poorly optimized for this game, as the performance gap between High and Ultra is only 3 FPS at 4K (73 vs 70) and 6 FPS at 1080p (117 vs 123). This indicates that Ultra settings introduce rendering features that tax the GPU without proportional visual benefits. The recommended approach is to use Medium as the default, with High as an option for users who prioritize visual quality over a few extra frames per second.

Measured FPS Breakdown

At 1920x1080, the full range of presets shows the system's peak capabilities. The Low preset achieves an average of 211 FPS, the Medium preset 164 FPS with a minimum of 139 and maximum of 188, the High preset 123 FPS, and the Ultra preset 117 FPS. These numbers demonstrate that at 1080p, the CPU is capable of driving the GPU to its limits, with the 47 FPS difference between Medium and Ultra showing the GPU's scaling under increasing load.

Moving to 2560x1440, the averages drop predictably. Low delivers 170 FPS, Medium 132 FPS (min 112, max 152), High 99 FPS, and Ultra 95 FPS. The performance gap between High and Ultra narrows to just 4 FPS, while the gap between Low and Medium remains substantial at 38 FPS. This suggests that the GPU is beginning to become the limiting factor at 1440p, particularly at higher presets.

At 3840x2160, the system's performance is constrained by the GPU's memory bandwidth. Low delivers 125 FPS, Medium 97 FPS (min 83, max 112), High 73 FPS, and Ultra 70 FPS. The difference between Low and Ultra is 55 FPS, but the difference between High and Ultra is only 3 FPS, indicating that the Ultra preset's additional features do not justify their performance cost at 4K. The Medium preset at 97 FPS provides the best balance of visual quality and playability, with the minimum of 83 FPS ensuring no significant frame drops during intensive scenes.