Microsoft Flight Simulator

# Microsoft Flight Simulator — Intel Core Ultra 5 235 + AMD Radeon RX 580

This combination delivers playable frame rates only at the lowest preset, with the data showing a hard ceiling imposed by the graphics card. The AMD Radeon RX 580, a 2017-era GPU sitting at the 53rd percentile of all tested graphics cards, struggles to keep Microsoft Flight Simulator fluid at any resolution above 1080p. The Intel Core Ultra 5 235, meanwhile, ranks in the 89th percentile of all CPUs, making this a profoundly unbalanced pairing where the GPU is the clear bottleneck.

Settings Recommendations

The measured rows reveal a consistent pattern: the Low preset is the only setting tier that approaches consistently smooth gameplay. At 1920x1080 Low, the combination produces 54 FPS average, which is the single highest frame rate recorded across all twelve test configurations. This is 12 FPS ahead of the next-best result (43 FPS at 1440p Low) and represents a 28.6% improvement over the 42 FPS achieved at 1080p Medium.

For users willing to accept visual compromises, the Medium preset at 1080p delivers 42 FPS average, with a minimum of 36 FPS and maximum of 48 FPS. This is the only non-Low setting that maintains an average above 40 FPS at any resolution. The High preset at 1080p drops to 31 FPS, which falls below the threshold most flight simulation enthusiasts would consider acceptable for sustained play. The Ultra preset at 1080p produces 30 FPS — statistically indistinguishable from High, suggesting the GPU has hit a hard performance wall.

At 1440p, the Low preset yields 43 FPS, which is playable but represents a 20.4% drop from the 1080p Low result. The Medium preset at 1440p produces 34 FPS (minimum 29, maximum 39), which is borderline for a flight simulator where smooth panning is critical. The High and Ultra presets at 1440p produce 25 FPS and 24 FPS respectively — both firmly in slideshow territory. At 4K, every preset fails to reach 32 FPS, with Ultra producing just 18 FPS.

The data strongly suggests that 1080p Low is the optimal configuration for this pairing, offering the best balance of playability and visual fidelity. The 54 FPS result at 1080p Low is 25.6% higher than the next-best alternative (1440p Low at 43 FPS), making it the clear recommendation. Users who prioritize visual quality over smoothness might consider 1080p Medium, but the 36 FPS minimum frame rate risks noticeable stutter during complex scenes.

GPU Role

The AMD Radeon RX 580 brings 8 GB of GDDR5 memory on a 256-bit bus, yielding 256.0 GB/s of bandwidth. Its Polaris 20 chip, built on a 14 nm process at GlobalFoundries, contains 5,700 million transistors across a 232 mm² die. The GPU operates at a 1257 MHz base clock and 1340 MHz boost clock, with memory running at 2000 MHz (8 Gbps effective). These specifications place the RX 580 at the 53rd percentile of all tested GPUs, with an average benchmark score of 12,928.

The nearest rivals in the GPU benchmark database frame the RX 580's position clearly. The NVIDIA GeForce RTX 3050 Ti Mobile scores 12,940 (0.1% higher), the NVIDIA GeForce GTX 1660 SUPER scores 12,986 (0.4% higher), and the AMD Radeon 740M scores 12,870 (0.5% lower). This clustering indicates the RX 580 sits in a dense performance band where small architectural differences separate competitors.

The measured FPS data shows the RX 580's 8 GB frame buffer is not the limiting factor at 1080p — the GPU's compute throughput is. The 6.175 TFLOPS of FP32 performance and 193.0 GTexel/s texture rate are simply insufficient for Microsoft Flight Simulator's demanding rendering workload. The 32 ROPs provide a 42.88 GPixel/s pixel rate, which explains why higher resolutions degrade performance so dramatically. At 4K Ultra, the 18 FPS result represents a 66.7% drop from 1080p Ultra's 30 FPS, demonstrating that the pixel throughput becomes the primary constraint as resolution increases.

The RX 580's 3DMark Steel Nomad DX12 score of 1,005 and PassMark G3D score of 8,813 place it in the lower-middle tier of modern GPUs. Its DirectX 12 PassMark score of 43 is notably weak, which matters because Microsoft Flight Simulator uses DX12 rendering paths. The GPU's Vulkan score of 45,173 in Geekbench suggests it performs relatively better in that API, but the game's implementation favors DX12 performance characteristics.

How This Combo Ranks

This Intel Core Ultra 5 235 + AMD Radeon RX 580 combination ranks 3,376 out of 3,714 tested combos in Microsoft Flight Simulator. That places it in the bottom 9.1% of all configurations measured — a poor result that reflects the GPU's age and mid-range positioning. The 338-combo gap between this pairing and the median configuration indicates substantial performance headroom exists in most other tested systems.

The CPU's strong benchmark scores make this ranking particularly telling. The Core Ultra 5 235 achieves a PassMark multithread score of 37,816 and a single-thread score of 4,516, placing it at the 89th percentile of all CPUs. Its Cinebench R23 scores of 14,769 (multi-core) and 2,085 (single-core) show a processor capable of handling demanding workloads. Yet in this game, the combo ranks near the bottom because the GPU cannot translate CPU capability into frame rate.

The GPU's nearest rivals in the database — the RTX 3050 Ti Mobile, GTX 1660 SUPER, and Radeon 740M — all cluster within 0.6% of the RX 580's average benchmark score. This suggests that swapping to any of these GPUs would produce nearly identical results in Microsoft Flight Simulator. The bottleneck is structural: no GPU in this performance class can push this game to high frame rates at demanding settings.

Measured FPS Breakdown

At 1920x1080, the combination produces its best results. The Low preset averages 54 FPS, representing the only configuration that exceeds 50 FPS. Medium averages 42 FPS with a minimum of 36 and maximum of 48 FPS, showing a tight frame pacing envelope. High averages 31 FPS, and Ultra averages 30 FPS — the minimal difference between these two presets suggests the GPU is saturated before the Ultra settings fully load.

At 2560x1440, performance drops noticeably. Low averages 43 FPS, a 20.4% reduction from the 1080p result. Medium averages 34 FPS with a 29 FPS minimum and 39 FPS maximum. High averages 25 FPS, and Ultra averages 24 FPS. The 1440p results show a consistent 20-25% penalty across all settings compared to 1080p, indicating the GPU's pixel throughput is the primary limiter.

At 3840x2160, the combination becomes impractical for gameplay. Low averages 32 FPS, Medium averages 25 FPS (minimum 21, maximum 29), High averages 19 FPS, and Ultra averages 18 FPS. The 4K results show severe degradation, with even the Low preset failing to maintain 30 FPS. The gap between 1440p and 4K is proportionally larger than the gap between 1080p and 1440p, confirming that the RX 580's 256-bit memory bus and 32 ROPs cannot sustain the pixel workload at 4K.

Resolution Scaling

The frame rate scaling across resolutions reveals a GPU-bound scenario. From 1080p Low to 1440p Low, the average FPS drops from 54 to 43 — a 20.4% decrease. From 1440p Low to 4K Low, the average drops from 43 to 32 — a 25.6% decrease. The cumulative drop from 1080p to 4K is 40.7%, which is notably less than the 75% pixel count increase would suggest if the system were purely pixel-throughput limited.

This non-linear scaling indicates that other factors — likely CPU draw call handling and memory bandwidth — partially compensate at lower resolutions. The Core Ultra 5 235's strong single-thread performance (Cinebench R23 single-core score of 2,085) helps maintain frame rates at 1080p where CPU overhead is more significant. As resolution increases, the GPU becomes the dominant constraint, and the scaling approaches what the pixel rate and texture rate would predict.

The Medium preset shows the most consistent scaling behavior. From 1080p (42 FPS) to 1440p (34 FPS) is a 19% drop, and from 1440p to 4K (25 FPS) is a 26.5% drop. The minimum and maximum frame times at Medium also scale predictably: the 1080p range of 36-48 FPS expands to 29-39 FPS at 1440p and 21-29 FPS at 4K. This tightening of the frame time distribution at higher resolutions suggests the GPU's workload becomes more uniform as pixel count increases.

CPU Role

The Intel Core Ultra 5 235 features 14 cores and 14 threads based on the Arrow Lake architecture, built on a 3 nm process at TSMC with 17,800 million transistors. Its base clock of 3.40 GHz boosts to 5.00 GHz, with a 65 W TDP. The CPU supports DDR5 memory on a dual-channel bus providing 102.4 GB/s of bandwidth, and its 24 MB of shared L3 cache helps feed the demanding flight simulation workload.

This processor ranks at the 89th percentile of all CPUs, with an average benchmark score of 46,062. Its nearest rivals are remarkably close: the AMD Ryzen AI 9 HX 375 scores 46,030 (0.1% lower), the Intel Core i9-13900HX scores 46,098 (0.1% higher), and the AMD EPYC 4364P scores 45,970 (0.2% lower). This tight clustering shows the Core Ultra 5 235 sits at a performance plateau where architectural differences produce negligible benchmark deltas.

In Microsoft Flight Simulator, the CPU's role is secondary to the GPU bottleneck. The game's heavy single-threaded simulation logic benefits from the 5.00 GHz boost clock and the strong single-core Cinebench R23 score of 2,085. The 14-thread configuration provides ample multi-threading headroom for background tasks, but the measured FPS data shows no scenario where CPU capability translates into higher frame rates. The 1080p Low result of 54 FPS is likely CPU-limited in certain scenes, but the GPU's 6.175 TFLOPS ceiling prevents any meaningful exploration of this headroom.

The launch MSRP of $257 for the Core Ultra 5 235 positions it as a mid-range desktop processor, and its benchmark scores justify that positioning. However, pairing it with an end-of-life RX 580 creates a system where the CPU's potential is largely wasted in this game. The data suggests that a more balanced GPU pairing would unlock substantially higher frame rates, particularly at 1080p where the CPU's single-thread performance could drive 60+ FPS in less demanding scenes.

FAQ

Q: What is the best settings preset for this combination in Microsoft Flight Simulator?

A: The data shows 1920x1080 Low is the optimal configuration, producing 54 FPS average — the highest measured result across all twelve test configurations. The Medium preset at 1080p delivers 42 FPS average with a 36 FPS minimum, which is the only other configuration that maintains an average above 40 FPS.

Q: Can this system handle 4K resolution in Microsoft Flight Simulator?

A: No. At 3840x2160, even the Low preset only achieves 32 FPS average, while Medium produces 25 FPS, High produces 19 FPS, and Ultra produces 18 FPS. All 4K results fall below the 30 FPS threshold generally considered minimum for playable flight simulation.

Q: How does the AMD Radeon RX 580 compare to its nearest GPU rivals?

A: The RX 580's average benchmark score of 12,928 places it within 0.6% of the NVIDIA GeForce RTX 3050 Ti Mobile (12,940), NVIDIA GeForce GTX 1660 SUPER (12,986), and AMD Radeon 740M (12,870). This indicates swapping to any of these GPUs would produce nearly identical results in this game.

Q: Is the Intel Core Ultra 5 235 the bottleneck in this system?

A: No. The CPU ranks at the 89th percentile of all processors with an average benchmark score of 46,062, while the GPU ranks at just the 53rd percentile. The measured FPS data shows the GPU's pixel throughput and texture rate are the limiting factors, particularly at resolutions above 1080p.

Q: What frame rates can I expect at 1440p with this combination?

A: The Low preset produces 43 FPS average, which is playable. Medium produces 34 FPS average (minimum 29, maximum 39), High produces 25 FPS, and Ultra produces 24 FPS. Only the Low preset maintains an average above 40 FPS at 1440p.

Q: How does this combo rank among all tested combinations in this game?

A: This pairing ranks 3,376 out of 3,714 tested combos, placing it in the bottom 9.1% of all configurations. This poor ranking directly reflects the RX 580's performance limitations, as the CPU's strong benchmark scores would normally support a much higher ranking.