Microsoft Flight Simulator

Microsoft Flight Simulator is an exceptionally demanding flight sim that stresses both CPU and GPU heavily, and the combination of the Intel Core Ultra 5 235 and NVIDIA GeForce RTX 3080 shows a clear performance curve across resolutions. This pairing delivers playable frame rates at 4K and high refresh rates at 1080p, with the data indicating that the GPU becomes the primary bottleneck as resolution increases, while the CPU's architecture plays a significant role in raw frame generation at lower settings.

Resolution Scaling

The measured FPS data shows a predictable yet steep decline as resolution increases, which is characteristic of a GPU-bound title like Microsoft Flight Simulator at higher settings. At 1920x1080 with High settings, the combo averages 92 FPS, but this drops to 74 FPS at 2560x1440 and further to 55 FPS at 3840x2160. This represents a 40% reduction in average FPS when moving from 1080p to 4K at High settings, a substantial hit that strongly suggests the RTX 3080 is the limiting factor in these scenarios.

Looking at the Low settings results, the scaling pattern shifts significantly. At 1080p Low, the system achieves 158 FPS, which drops to 127 FPS at 1440p and 94 FPS at 4K. The 1080p to 4K delta at Low settings is 64 FPS, or roughly a 40% reduction as well, but the absolute numbers are much higher. Interestingly, the percentage drop from 1440p to 4K at Low settings is about 26%, whereas from 1080p to 1440p it's about 20%. This indicates that even at Low settings, the GPU is still the primary constraint, though the CPU is able to push higher raw frame rates when the graphical load is light.

The Medium settings data provides a more complete picture with min and max FPS values. At 1080p Medium, the average is 123 FPS with a range of 104 to 141 FPS, while at 1440p Medium the average falls to 99 FPS with a range of 84 to 114 FPS. The 4K Medium result shows an average of 73 FPS with a range of 62 to 84 FPS. The frame time consistency, as indicated by the min-to-max spread, remains relatively tight across resolutions, which is good news for gameplay smoothness. The scaling from 1080p to 4K at Medium is a 50 FPS drop, or about 41%, which aligns closely with the High settings scaling.

Ultra settings show the most dramatic resolution impact, with averages of 88 FPS at 1080p, 71 FPS at 1440p, and 52 FPS at 4K. The 1080p to 4K drop of 36 FPS represents a 41% reduction, consistent with the other settings tiers. This consistency across all settings levels strongly indicates that the RTX 3080's rendering capabilities, particularly its memory bandwidth and shading throughput, are the dominant factor in determining frame rates as resolution scales. The GPU's 10 GB of GDDR6X memory and 320-bit bus width, which provides 760.3 GB/s of bandwidth, appear sufficient for this game at 4K, but the sheer pixel count overwhelms the GPU's raw compute power.

CPU Role

The Intel Core Ultra 5 235 brings 14 cores and 14 threads to the table, a configuration that is well-suited for Microsoft Flight Simulator's complex simulation logic. With a base clock of 3.40 GHz and a boost clock of 5.00 GHz, this CPU has solid single-thread performance, which is crucial for a flight sim that often has one primary simulation thread. The Cinebench R23 single-core score of 2085 and multi-core score of 14769 indicate that the CPU sits in the 89th percentile among all CPUs, a strong position for handling the game's physics and AI calculations.

The 14-thread count, equal to the core count, means no hyperthreading is present, but the Arrow Lake architecture's efficiency compensates. The CPU's 24 MB of shared L3 cache and 3 MB of L2 cache per core help keep frequently accessed simulation data close at hand. In Microsoft Flight Simulator, the CPU is responsible for processing the world's terrain, weather, and aircraft systems, and benchmark results show that at 1080p Low settings, the system hits 158 FPS, which suggests the CPU has ample headroom even when the GPU is underutilized.

Comparing to nearest rivals, the Core Ultra 5 235's average benchmark score of 46062 is within 0.1% of the AMD Ryzen AI 9 HX 375 and within 0.2% of the AMD EPYC 4364P. This puts it in a tight performance cluster, but for gaming, the single-threaded performance is more relevant. The Cinebench R20 single-core score of 875 and R15 single-core score of 210 show strong per-thread capability, which translates to responsive frame pacing in flight sim scenarios. At 1080p High settings, the 92 FPS result indicates that the CPU is not the bottleneck, as the GPU is still able to produce high frame rates. However, at 1080p Low settings, the 158 FPS result is likely closer to the CPU's maximum frame generation capability, as the GPU has less work to do.

The CPU's 65 W TDP suggests efficient power usage, though it is paired with a 320 W GPU, making the system's total power draw significant. The DDR5 memory support and dual-channel bus with 102.4 GB/s bandwidth provide sufficient data throughput for the game's streaming world, which is a common performance factor in flight simulators.

FAQ

Q: What is the highest average FPS this combo achieves at 1080p?

A: The highest average FPS at 1080p is 158 FPS, achieved at Low settings. At Medium settings, the average is 123 FPS, at High settings it's 92 FPS, and at Ultra settings it's 88 FPS.

Q: How does the 4K Ultra performance compare to 1080p Ultra?

A: At 4K Ultra, the average FPS is 52, while at 1080p Ultra it's 88 FPS. This represents a 36 FPS drop, or about a 41% reduction in frame rate when moving from 1080p to 4K at the highest settings.

Q: Is the RTX 3080's 10 GB VRAM sufficient for this game at 4K?

A: Based on the measured data, the 4K High settings average is 55 FPS and 4K Ultra averages 52 FPS, suggesting the 10 GB VRAM and 760.3 GB/s bandwidth are adequate for the game's needs at these settings, as the FPS does not collapse due to memory limitations.

Q: How does this combo rank among all tested configurations?

A: For Microsoft Flight Simulator, this specific CPU and GPU combination ranks 786 out of 2996 tested combos, placing it in the top 26% of all configurations tested.

Q: What is the FPS difference between Low and Ultra settings at 1440p?

A: At 1440p, the Low setting averages 127 FPS, while Ultra averages 71 FPS. This is a 56 FPS difference, showing that graphical settings have a significant impact on performance at this resolution.

Q: Does the CPU or GPU limit performance more at 1080p Low?

A: At 1080p Low, the average FPS is 158, which is the highest across all tested configurations. This suggests the CPU is capable of generating very high frame rates, but the GPU is still the limiting factor at higher settings, as evidenced by the drop to 92 FPS at High settings.

How This Combo Ranks

In the database of tested hardware combinations for Microsoft Flight Simulator, this pairing of the Intel Core Ultra 5 235 and NVIDIA GeForce RTX 3080 achieves a rank of 786 out of 2996 total combos. This places it in the upper 26% of all tested systems, which is a respectable position given the demanding nature of the game. The rank reflects the balance between the CPU's strong single-threaded performance and the GPU's capable but not top-tier rendering power.

The CPU's 89th percentile ranking among all CPUs indicates it is a high-performing processor, but the GPU's 68th percentile ranking among all GPUs suggests it is the weaker component in this pairing. This imbalance explains why the combo's overall rank is not higher, as the RTX 3080, while capable, is not in the top tier of graphics cards. The average benchmark score for the CPU is 46062, which is nearly identical to the AMD Ryzen AI 9 HX 375 at 46030, showing that the CPU is not the bottleneck in most scenarios.

The combo's rank is likely driven by the game's heavy reliance on GPU rendering at higher resolutions, where the RTX 3080's 29.77 TFLOPS of FP32 performance and 164.2 GPixel/s pixel rate are put to the test. The 68 RT cores and 272 tensor cores help with the game's advanced graphics features, but the overall GPU compute is limited compared to newer offerings. The rank of 786 suggests that while this system delivers good performance, there are many faster combinations available, particularly those with more powerful GPUs.

GPU Role

The NVIDIA GeForce RTX 3080 is built on the Ampere architecture and features the GA102 chip, manufactured on an 8 nm process by Samsung. With 8704 shading units, 272 TMUs, and 96 ROPs, this GPU provides substantial rendering power, but its 10 GB of GDDR6X memory on a 320-bit bus is a notable limitation for modern titles. The memory clock runs at 1188 MHz, providing 19 Gbps effective speed and 760.3 GB/s of bandwidth. This configuration is sufficient for Microsoft Flight Simulator, as seen in the measured FPS, but higher-end cards with more VRAM would likely scale better at 4K.

The GPU's boost clock of 1710 MHz and base clock of 1440 MHz, combined with a 320 W TDP, indicate it operates at high power levels to achieve its performance. The 68 RT cores and 272 tensor cores support the game's ray-traced effects and DLSS features, though the measured FPS data does not specify whether these features are enabled. The pixel rate of 164.2 GPixel/s and texture rate of 465.1 GTexel/s give the GPU enough throughput to handle the game's complex scenery at moderate settings.

The RTX 3080's percentile ranking of 68th among all GPUs shows it is above average but not exceptional. The nearest rivals in the benchmark database, such as the NVIDIA P106-100 and AMD Radeon RX 6600M, have similar average scores, though these are likely desktop and mobile variants with different performance characteristics. The GPU's 3DMark Steel Nomad DX12 score of 4407 and Passmark G3D score of 25086 confirm its mid-to-high-end positioning.

In Microsoft Flight Simulator, the GPU's role becomes more dominant as resolution increases. At 1080p Low, the GPU can easily keep up with the CPU, resulting in 158 FPS. However, at 4K Ultra, the GPU struggles to maintain 60 FPS, averaging 52 FPS. This indicates that the RTX 3080's compute resources are the primary constraint at higher resolutions. The 10 GB VRAM is adequate, as the game's textures at 4K Ultra do not appear to cause memory-related stuttering, but the GPU's raw shading power limits performance.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of performance across three resolutions and four settings levels. At 1920x1080, the system achieves an average of 158 FPS at Low settings, which represents the absolute maximum performance of this combo. The Medium setting at 1080p averages 123 FPS with a range of 104 to 141 FPS, showing good frame consistency. High settings at 1080p drop to 92 FPS, while Ultra settings average 88 FPS, a relatively small difference of 4 FPS between High and Ultra at this resolution.

Moving to 2560x1440, the performance scales down accordingly. Low settings average 127 FPS, a 31 FPS drop from 1080p. Medium settings at 1440p average 99 FPS with a range of 84 to 114 FPS, which is a 24 FPS reduction from 1080p Medium. High settings at 1440p average 74 FPS, and Ultra settings average 71 FPS. The difference between High and Ultra at 1440p is only 3 FPS, similar to the 1080p pattern, indicating that the Ultra preset adds minimal graphical overhead over High at these resolutions.

At 3840x2160, the performance drops significantly. Low settings average 94 FPS, which is still playable but a 33 FPS reduction from 1080p Low. Medium settings average 73 FPS with a range of 62 to 84 FPS, representing the only 4K setting with min/max data available. High settings at 4K average 55 FPS, while Ultra settings average 52 FPS. The 4K Ultra result of 52 FPS is just below the 60 FPS target that many players prefer, but it is still a playable frame rate for a flight sim where smoothness is less critical than in fast-paced action games.

The data shows a consistent pattern: as settings increase at any given resolution, FPS decreases, but the delta between High and Ultra is consistently small (4 FPS at 1080p, 3 FPS at 1440p, and 3 FPS at 4K). This suggests that the Ultra preset in Microsoft Flight Simulator adds visual improvements that have minimal performance impact over High. Conversely, the jump from Low to Medium is more significant, with a 35 FPS drop at 1080p, a 28 FPS drop at 1440p, and a 21 FPS drop at 4K. This indicates that Medium settings introduce a substantial graphical load that taxes the GPU more than the differences between High and Ultra.