Microsoft Flight Simulator

The Intel Core i5-9400 paired with the Intel Arc B580 delivers a mid-pack experience in Microsoft Flight Simulator, ranking 1393rd out of 1795 tested combinations. The data shows this is a configuration that prioritizes smoothness at lower settings, but struggles to maintain high frame rates at demanding presets, making it a niche choice for this simulation.

CPU Role

The Intel Core i5-9400 is a 6-core, 6-thread processor based on the Coffee Lake architecture, running on the Intel Socket 1151 platform. Its base clock of 2.90 GHz can boost up to 4.10 GHz, which is modest by modern standards. With a 65 W TDP and 9 MB of shared L3 cache, this chip is designed for efficient, everyday workloads rather than extreme multi-threaded performance. The CPU’s benchmark data reinforces this: it scores 7969 in Cinebench R23 multi-core and 1125 in single-core, placing it at the 50th percentile among all CPUs.

In the context of Microsoft Flight Simulator, the CPU’s role is significant because the game is known for heavy simulation logic and draw-call overhead. The i5-9400’s lack of hyper-threading means it has only 6 threads to handle both the game’s physics and the rendering pipeline. This becomes a bottleneck at lower resolutions where the GPU is not fully stressed, as evidenced by the frame rate scaling. The chip’s nearest rivals include the Intel Core i3-10305 (0.2% faster) and the Intel Xeon E-2134 (0.4% faster), indicating that the i5-9400 is essentially on par with a high-end quad-core from a similar era. The benchmark results suggest that the CPU can keep up with the Arc B580 at 1080p Low settings, but its limited thread count will likely cap performance when the GPU is asked to render more frames.

GPU Role

The Intel Arc B580 is the star of this pairing, built on the new Xe2-HPG architecture (Battlemage) using a 5 nm process from TSMC. It features 12 GB of GDDR6 memory on a 192-bit bus, delivering 456.0 GB/s of bandwidth. The GPU’s boost clock is 2670 MHz, and it offers 2560 shading units, 160 TMUs, and 80 ROPs. This hardware translates to a Passmark G3D score of 15748, placing it at the 66th percentile among all GPUs. The Arc B580’s nearest rivals are telling: it is 0.7% slower than the NVIDIA GeForce RTX 4060 and 1.3% faster than the RTX 4060 Mobile, meaning it sits squarely in the mainstream performance tier.

For Microsoft Flight Simulator, the GPU’s 12 GB VRAM is a critical asset, as the game loads extensive terrain and aircraft textures. The Arc B580’s memory bandwidth of 456.0 GB/s helps sustain high-resolution rendering, but the data shows its raw compute power is limited. At 4K Ultra, the combo drops to 29.6 FPS, indicating the GPU is struggling with the pixel fill rate and shader complexity. The Arc B580’s FP32 performance of 13.67 TFLOPS is decent, but the game’s reliance on heavy draw calls means the CPU often becomes the limiting factor at lower resolutions, while the GPU takes over as the bottleneck at 4K.

How This Combo Ranks

The combo ranks 1393rd out of 1795 tested combinations, placing it in the lower-middle tier of the database. This rank reflects the balance of the i5-9400’s age and the Arc B580’s mid-range positioning. The data indicates that this pairing is not optimized for high-end performance, but it does offer a playable experience at medium settings. The rank is driven primarily by the CPU’s limited thread count, which holds back the GPU’s potential in CPU-bound scenarios.

Compared to other combos, the i5-9400 + Arc B580 performs best when the resolution is high enough to shift the load onto the GPU. At 1440p and 4K, the GPU becomes the primary bottleneck, and the CPU’s weaknesses are less apparent. However, at 1080p, the CPU’s 6 threads can cause stuttering in dense areas, which is why the combo’s rank is lower than the GPU’s individual percentile might suggest. The data shows that this is a pairing for users who prioritize graphical fidelity over raw frame rates, as the GPU’s 12 GB VRAM allows for high texture loads without exceeding memory limits.

Measured FPS Breakdown

The measured frame rates reveal a clear pattern of performance scaling across resolutions and settings. At 1080p, the combo achieves 97.3 FPS on Low, which is playable, but drops to 72.5 FPS on Medium and 56.3 FPS on High. The Ultra preset yields 56.4 FPS, which is nearly identical to High, suggesting the CPU is capping performance at these settings. At 1440p, the frame rates fall to 79.8 FPS (Low), 61.1 FPS (Medium), 45.4 FPS (High), and 45.3 FPS (Ultra). The gap between High and Ultra at 1440p is negligible, again pointing to a CPU bottleneck.

At 4K, the GPU becomes the limiting factor. The combo delivers 54.4 FPS on Low, 47.2 FPS on Medium, 31.3 FPS on High, and 29.6 FPS on Ultra. The steep drop from Medium to High at 4K (47.2 to 31.3 FPS) indicates that the Ultra/High presets introduce shader effects that overwhelm the Arc B580’s 13.67 TFLOPS compute. The data shows that the only consistently playable frame rates above 60 FPS are at 1080p Low, with 1440p Low being marginal at 79.8 FPS. For a smooth experience, the user must accept significant visual compromises.

FAQ

Q: Is the Intel Core i5-9400 a bottleneck for the Intel Arc B580 in this game?

A: Yes, at 1080p and 1440p, the CPU’s 6 threads limit performance. The frame rate difference between High and Ultra at 1440p is only 0.1 FPS (45.4 vs 45.3), which indicates the CPU is capping the GPU’s output. At 4K, the GPU becomes the bottleneck.

Q: What is the best resolution for this combo if I want to stay above 60 FPS?

A: The data shows that only 1080p Low (97.3 FPS) and 1440p Low (79.8 FPS) exceed 60 FPS. At 1080p Medium, the frame rate drops to 72.5 FPS, which is still above 60 but requires a slight compromise in settings.

Q: How does the Arc B580 compare to the NVIDIA GeForce RTX 4060?

A: The Arc B580’s average benchmark score is 23021, which is 0.7% lower than the RTX 4060’s score of 23181. This means the two GPUs are nearly identical in raw performance, but the Arc B580 offers 12 GB of VRAM compared to the RTX 4060’s likely lower capacity.

Q: Can this combo handle 4K Ultra settings?

A: No, the measured FPS at 4K Ultra is 29.6 FPS, which is not smooth for a flight simulator. Even 4K High yields only 31.3 FPS, so the Arc B580 is not sufficient for 4K with high graphical fidelity.

Q: Is the CPU’s lack of hyper-threading a major issue?

A: The i5-9400 has 6 cores and 6 threads, which is below modern standards. The Cinebench R23 multi-core score of 7969 is modest, and the benchmark results indicate the CPU can become a limiting factor, especially at lower resolutions where the GPU is underutilized.

Q: What is the launch MSRP of the Intel Arc B580?

A: The launch MSRP is 249 USD. This is a factual data point from the GPU’s specifications, but it does not reflect current market pricing.

Settings Recommendations

The measured data suggests that the Medium preset at 1440p offers the best balance of visual quality and performance for this combo. At 1440p Medium, the frame rate is 61.1 FPS, which is playable and provides a significant visual upgrade over Low settings. The jump from Medium to High at 1440p costs 15.7 FPS (61.1 to 45.4), which is too steep for the marginal graphical improvement. For users who prioritize smoothness, 1080p Medium at 72.5 FPS is the safest choice, as it stays well above the 60 FPS threshold without the CPU bottleneck seen at High settings.

The data shows that the Ultra preset should be avoided entirely, as it offers no meaningful frame rate advantage over High at 1080p (56.4 vs 56.3 FPS) and only a 0.1 FPS difference at 1440p (45.3 vs 45.4). This indicates the CPU is the limiting factor at these settings, and the extra GPU load does not translate to better performance. If the user has a 4K monitor, the Low preset at 4K (54.4 FPS) is the only viable option, as Medium drops to 47.2 FPS, which may cause noticeable stuttering in a simulation where smoothness is critical.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals the dynamic relationship between the CPU and GPU. At Low settings, the frame rates are 97.3 FPS (1080p), 79.8 FPS (1440p), and 54.4 FPS (4K). This represents a drop of 18% from 1080p to 1440p and a further 32% drop from 1440p to 4K. The scaling is relatively smooth, indicating that the GPU is handling the increased pixel load without major hiccups, but the CPU still provides enough headroom at Low settings.

At Medium settings, the drop is more pronounced: 72.5 FPS (1080p) to 61.1 FPS (1440p) is a 15.7% decrease, while 4K Medium (47.2 FPS) represents a 22.7% drop from 1440p. This suggests that the GPU is becoming more of a bottleneck as the settings increase. At High settings, the scaling is steeper: 56.3 FPS (1080p) to 45.4 FPS (1440p) is a 19.4% drop, and 4K High (31.3 FPS) falls 31% from 1440p. This indicates that the Arc B580’s compute limits are reached at 4K High, while the CPU is still the limiting factor at 1080p High.

The data shows that the combo is CPU-limited at 1080p and 1440p for High and Ultra settings, as the frame rates plateau or drop marginally. At 4K, the GPU becomes the clear bottleneck, with the frame rate scaling more dramatically with resolution. This means that users who want to play at 4K must accept Low settings, while those at 1080p can push to Medium without sacrificing smoothness. The i5-9400’s 6 threads are the primary constraint at lower resolutions, but the Arc B580’s 12 GB VRAM and 456.0 GB/s bandwidth ensure that the GPU is never starved for memory, even at 4K.