Microsoft Flight Simulator

Microsoft Flight Simulator presents an unusual challenge for even the most powerful hardware, and the measured results for the Intel Core Ultra 7 270K Plus paired with the NVIDIA GeForce RTX 4090 reveal a configuration that is overwhelmingly GPU-bound at higher resolutions but surprisingly balanced at 1080p. The data indicates a system capable of exceptional frame rates, though the scaling patterns between presets and resolutions expose where the bottlenecks truly lie.

Resolution Scaling

The frame rate progression from 1080p to 4K shows a classic GPU-bound curve, but the magnitude of the drop is more pronounced than typical for this GPU. At Low settings, the average FPS falls from 233 at 1920x1080 to 188 at 2560x1440, a 19.3% reduction, and then to 138 at 3840x2160, a further 26.6% drop from 1440p. This steep decline at 4K suggests the RTX 4090’s immense shading power is being taxed by the sheer pixel count, even with the game’s simpler rendering paths.

Moving to Medium settings, the scaling becomes more linear: 181 FPS at 1080p, 146 FPS at 1440p (a 19.3% drop), and 108 FPS at 4K (a 26.0% drop from 1440p). The consistency of these percentage losses across Low and Medium indicates that the GPU’s compute units are the primary limiter, with the CPU able to feed frames efficiently enough at these settings. The RTX 4090’s 82.58 TFLOPS FP32 throughput is clearly being utilized, but the game’s engine appears to scale workload almost perfectly with resolution, leaving no headroom for the CPU to matter.

At High settings, the curve steepens: 136 FPS at 1080p, 110 FPS at 1440p (a 19.1% drop), and 81 FPS at 4K (a 26.4% drop from 1440p). Ultra settings follow a similar pattern, with 130 FPS at 1080p, 105 FPS at 1440p (a 19.2% drop), and 77 FPS at 4K (a 26.7% drop). The fact that the percentage drops are nearly identical across all four presets—around 19% for the 1080p-to-1440p step and 26% for the 1440p-to-4K step—strongly implies that the limiting component is the GPU’s render output units and memory bandwidth, not the CPU or any software bottleneck.

The data also reveals that the gap between 1440p and 4K is larger than the gap between 1080p and 1440p, which is expected given the pixel count increase (2.25x from 1080p to 1440p versus 2.25x from 1440p to 4K). However, the FPS does not halve, indicating that the RTX 4090’s 1.01 TB/s memory bandwidth and 443.5 GPixel/s pixel rate provide enough throughput to partially mitigate the resolution jump. The 24 GB of GDDR6X memory on a 384-bit bus is clearly sufficient for this game’s textures, as no min FPS anomalies suggest VRAM spilling.

Settings Recommendations

The measured rows offer clear guidance on the optimal preset for each resolution. At 1920x1080, the Low preset delivers 233 FPS, but this is likely excessive for a flight simulator, where smoothness matters more than raw speed. The Medium preset at 181 FPS with a min of 154 FPS and max of 208 FPS provides a better visual experience while still maintaining a high refresh rate. The High preset at 136 FPS is also viable, but Ultra at 130 FPS shows diminishing returns—only a 4.4% FPS loss from High to Ultra at 1080p, which suggests Ultra is nearly free in performance terms.

At 2560x1440, the story shifts. Medium at 146 FPS (min 124, max 168) is the sweet spot for competitive smoothness, but High at 110 FPS and Ultra at 105 FPS are both playable for a sim. The difference between High and Ultra at 1440p is just 4.5%, making Ultra the better choice for visual fidelity without a meaningful FPS penalty. Low at 188 FPS is unnecessary unless targeting a 240 Hz display, but the data shows it is available.

At 3840x2160, the choices narrow. Ultra at 77 FPS is the most demanding, while High at 81 FPS is only 5.2% faster. Medium at 108 FPS (min 92, max 124) offers a substantial jump in performance—33.3% over High—and is the recommended preset for 4K gaming, as it stays above 90 FPS even in the minimum frame rate. Low at 138 FPS is possible but sacrifices too much visual quality for a sim that relies on scenery detail. The data suggests that Medium is the best balance at 4K, as it provides a stable 92 FPS minimum, which is critical for avoiding stutters during dense scenery loads.

GPU Role

The NVIDIA GeForce RTX 4090 is the dominant component in this configuration, and its specifications explain the measured results. With 16,384 shading units, 512 TMUs, and 176 ROPs, the GPU has massive parallel throughput, but the game’s frame rate at 4K Ultra (77 FPS) indicates that even this hardware is pushed hard by Microsoft Flight Simulator’s rendering complexity. The boost clock of 2520 MHz and base clock of 2235 MHz are standard for the Ada Lovelace architecture, but the real differentiator is the memory subsystem: 24 GB of GDDR6X on a 384-bit bus delivering 1.01 TB/s of bandwidth.

This bandwidth is critical because the game’s terrain streaming and texture loading are memory-intensive. The measured min FPS at 4K Medium (92 FPS) versus the average (108 FPS) shows only a 14.8% variance, indicating that the GPU is not starved for data—the memory bandwidth is sufficient to keep the cores fed. The RTX 4090’s 82.58 TFLOPS FP32 compute is the likely limiter at 4K, as the pixel rate of 443.5 GPixel/s must fill over 8.3 million pixels per frame at 3840x2160, and the frame times at Ultra suggest the shader units are at full utilization.

The GPU’s percentile ranking of 88 versus all GPUs, with an average benchmark score of 60,347, places it near the top of the database, but its nearest rivals (Intel Arc Pro A60, AMD Radeon Pro Vega 48, AMD Radeon Pro W6600M) are workstation-class cards that are not gaming-focused. This comparison highlights that the RTX 4090 is in a class of its own for gaming, yet the game still manages to reduce its output to 77 FPS at 4K Ultra, proving the title’s demanding nature. The 128 RT cores and 512 tensor cores are present, but their impact on this game’s rasterized scenes is minimal, as the FPS scaling with resolution is linear, indicating no ray tracing or DLSS-related bottlenecks.

Measured FPS Breakdown

At 1920x1080, the data shows a wide range of performance across presets. Low leads with 233 FPS average, followed by Medium at 181 FPS (min 154, max 208), High at 136 FPS, and Ultra at 130 FPS. The spread between Low and Ultra is 103 FPS, or 79.2% of the Ultra score, which is substantial. The Medium preset’s min FPS of 154 indicates good frame pacing, with only a 27 FPS gap between min and max, suggesting the GPU is not encountering sudden spikes in workload at this resolution.

At 2560x1440, the averages are 188 FPS (Low), 146 FPS (Medium, min 124, max 168), 110 FPS (High), and 105 FPS (Ultra). The drop from 1080p to 1440p at each preset is consistent: Low falls by 45 FPS, Medium by 35 FPS, High by 26 FPS, and Ultra by 25 FPS. This pattern indicates that the GPU’s pixel throughput is the primary constraint, as the absolute FPS loss shrinks with higher settings, meaning the CPU is not introducing additional overhead at lower settings.

At 3840x2160, the results are 138 FPS (Low), 108 FPS (Medium, min 92, max 124), 81 FPS (High), and 77 FPS (Ultra). The min FPS at 4K Medium (92 FPS) is notably close to the 1080p Ultra average (130 FPS), showing that the GPU still has headroom even at 4K. The gap between High and Ultra at 4K is only 4 FPS, or 4.9%, making Ultra a nearly free upgrade in performance terms. Across all resolutions, the Low preset consistently doubles the Ultra FPS, but the Medium preset offers the best balance of visual quality and performance, with the 4K Medium min FPS of 92 being the key metric for smooth gameplay.

FAQ

Q: What is the best preset for 4K gaming on this system?

A: The Medium preset at 3840x2160 delivers an average of 108 FPS with a minimum of 92 FPS, which is 33.3% faster than High (81 FPS) and 40.3% faster than Ultra (77 FPS). This makes Medium the only preset that guarantees a 90+ FPS minimum at 4K.

Q: How does the RTX 4090 compare to its nearest rivals in benchmark scores?

A: The RTX 4090 has an average benchmark score of 60,347, which is nearly identical to the Intel Arc Pro A60 (60,326, 0% delta). It is 0.3% faster than the AMD Radeon Pro Vega 48 (60,140) but 2.5% slower than the AMD Radeon Pro W6600M (61,896) and 2.9% faster than the AMD Radeon PRO V710 (58,657).

Q: Is the CPU a bottleneck at 1080p Low settings?

A: The data suggests no, as the RTX 4090 achieves 233 FPS at 1080p Low, which is a very high frame rate. The CPU’s 24 cores and 24 threads, with a boost clock of 5.50 GHz, are sufficient to feed the GPU at this rate, as the FPS scaling from 1080p to 4K follows a purely GPU-bound pattern.

Q: What is the combo’s ranking among all tested configurations?

A: This Intel Core Ultra 7 270K Plus and RTX 4090 combination ranks 67th out of 2,996 tested combos in Microsoft Flight Simulator, placing it in the top 2.2% of all systems.

Q: How much FPS is lost moving from 1440p to 4K at Ultra settings?

A: At Ultra settings, the average FPS drops from 105 at 2560x1440 to 77 at 3840x2160, a 28 FPS decrease or 26.7% reduction. This is consistent with the resolution scaling seen at other presets.

Q: Does the GPU’s 24 GB VRAM cause any performance issues?

A: No, the measured min FPS values (e.g., 92 FPS at 4K Medium) do not show any sudden drops that would indicate VRAM exhaustion. The 24 GB capacity on a 384-bit bus with 1.01 TB/s bandwidth is more than adequate for this game’s texture and terrain data.

CPU Role

The Intel Core Ultra 7 270K Plus, with its 24 cores and 24 threads, is a high-end desktop processor that is clearly not the limiting factor in this game. Its base clock of 3.70 GHz and boost clock of 5.50 GHz provide strong single-thread performance, which is critical for flight simulators that often rely on a few main threads for physics and AI. The measured FPS data supports this, as the frame rates scale predictably with resolution, which would not happen if the CPU were struggling to keep up with the GPU’s output.

The CPU’s benchmark scores are impressive, with a Cinebench R23 multi-core score of 44,253 and single-core score of 2,439, placing it in the 96th percentile of all CPUs. Its Passmark multi-thread score of 68,574 and single-thread score of 5,068 further confirm its capability. The nearest rivals are server-class chips like the Intel Xeon 6520P (93,786 avg, 0% delta) and AMD EPYC 4564P (95,183 avg, -1.5% delta), which have more cores but are not necessarily faster in gaming workloads. The data shows that the CPU has ample headroom, as the FPS at 1080p Low (233 FPS) is not constrained by any single-thread limit.

The CPU’s 36 MB of shared L3 cache and 192 KB per-core L1 cache, along with 3 MB per-core L2 cache, provide fast access to game data, reducing latency that could cause frame hitches. The dual-channel DDR5 memory with 115.2 GB/s bandwidth is sufficient for the GPU, as the RTX 4090’s 1.01 TB/s bandwidth is the more critical path. The CPU’s PCIe Gen 5 interface with 20 lanes ensures the GPU can communicate at full speed, but the GPU uses PCIe 4.0 x16, so the bandwidth is not fully utilized, which is fine. In this game, the CPU’s role is to feed the GPU without becoming a bottleneck, and the benchmark results indicate it does so effectively, as the FPS differences between presets are entirely attributable to GPU workload.

How This Combo Ranks

This specific combination of the Intel Core Ultra 7 270K Plus and the NVIDIA GeForce RTX 4090 ranks 67th out of 2,996 tested combos in Microsoft Flight Simulator, placing it in the top 2.2% of all systems. This ranking is notable because the GPU is in the 88th percentile of all GPUs, while the CPU is in the 96th percentile, indicating that the combo’s performance is slightly below what the individual components would suggest. The reason is likely the game’s heavy reliance on GPU rasterization, which means the CPU’s high percentile does not translate to a proportional FPS advantage.

Compared to other combos, this system is 0.7% faster than the average of the top 100 systems, but the gap to the number 1 combo is likely small, as the RTX 4090 is near the top of the GPU hierarchy. The rank of 67 suggests there are 66 other combos that achieve higher FPS, likely with higher-clocked CPUs or more optimized configurations, but the data does not specify which. The combo’s performance is consistent with the GPU’s benchmark scores, as the RTX 4090’s average score of 60,347 is only 0.3% higher than the Intel Arc Pro A60, which is a workstation card, yet in gaming, the RTX 4090 is clearly superior due to its driver optimization and feature set.

The rank of 67 also implies that the CPU is not holding back the GPU, as the FPS at 4K Ultra (77 FPS) is close to the expected performance of a standalone RTX 4090. If the CPU were a bottleneck, the rank would be lower, and the FPS would not scale as cleanly with resolution. The data shows that this combo is a top-tier configuration for Microsoft Flight Simulator, capable of delivering playable frame rates at 4K Ultra and exceptional performance at lower resolutions, but it is not the absolute fastest due to the game’s specific engine characteristics. The measured results confirm that the RTX 4090 is the star of this pairing, while the Core Ultra 7 270K Plus provides a solid foundation without introducing any noticeable limitations.