Microsoft Flight Simulator

Microsoft Flight Simulator is a demanding title, and the pairing of the Intel Core Ultra 7 270K Plus with the Intel Arc B390 produces a very specific performance profile. The measured data shows a combo that ranks near the bottom of the database, primarily constrained by the integrated graphics solution. This analysis breaks down the benchmark results, settings behavior, and the distinct roles the CPU and GPU play in this configuration.

How This Combo Ranks

The Intel Core Ultra 7 270K Plus and Intel Arc B390 combination sits at rank 2665 out of 2996 tested combos for Microsoft Flight Simulator. That places it in the 11th percentile of all recorded configurations, meaning roughly 89% of tested pairings deliver higher average frame rates in this specific flight simulator. The data indicates a fundamental imbalance: the CPU is a high-end desktop part, while the GPU is an integrated processor graphics solution that heavily bottlenecks the system.

The combo’s rank is driven almost entirely by the GPU. The Intel Arc B390, based on the Xe3-LPG architecture, holds a percentile rank of 9 against all GPUs in the database. Its average benchmark score is 1482, a figure that places it alongside legacy NVIDIA parts—specifically, the GeForce GT 520MX (1463, 1.3% slower), GeForce 800M (1460, 1.5% slower), GeForce GT 625 OEM (1446, 2.5% slower), and GeForce GT 710 (1443, 2.7% slower). These rivals are all in the same performance tier, which contextualizes the Arc B390’s capabilities: it is not a gaming-oriented discrete GPU but rather an IGP with modest 3D throughput.

With a combo rank of 2665 out of 2996, the average FPS in this game will struggle to reach playable levels at most settings. The data shows that the best average FPS achieved across all measured rows is 56 at 1080p with Low settings. Even that figure is marginal for a flight simulator, where smooth camera panning and detailed terrain rendering benefit from higher frame rates. The gap between this combo and the top-performing systems is enormous, but the benchmark results still reveal consistent scaling behavior that can be analyzed for optimization.

GPU Role

The Intel Arc B390 is the primary limiting factor in this configuration. It operates as an integrated graphics processor (IGP) with a base clock of 300 MHz and a boost clock of 2500 MHz. The GPU has 1536 shading units, 48 texture mapping units, and 24 raster output units. Its pixel rate is 60.00 GPixel/s and texture rate is 120.0 GTexel/s, with FP32 performance rated at 7.680 TFLOPS. These specs are modest for modern gaming, and the benchmark data confirms it: the GPU’s only recorded 3DMark Steel Nomad DX12 score is 1482, which lands it in the 9th percentile of all GPUs.

Crucially, the Arc B390 uses system shared memory, with a bus width and bandwidth described as "System Shared" and "System Dependent," respectively. This means the GPU has no dedicated VRAM; it borrows from the system’s DDR5 memory. For Microsoft Flight Simulator, which streams vast amounts of terrain and scenery data, this shared memory architecture can lead to performance variability. The measured FPS rows show a clear pattern: at 4K, the average FPS drops to 19 on both High and Ultra settings, while Low settings reach 33 FPS. The GPU’s 24 ROPs are likely the bottleneck at higher resolutions, as pixel fill rate becomes critical.

The Arc B390’s boost clock of 2500 MHz is respectable for an IGP, but it cannot compensate for the lack of dedicated memory bandwidth. The system shared memory configuration means that the GPU’s performance is partly dependent on the CPU’s memory controller and the speed of the installed DDR5 RAM. In this benchmark setup, the measured results show that the GPU consistently delivers playable frame rates only at 1080p Low, where the pixel workload is lowest. The RT cores (12) are present, but Microsoft Flight Simulator’s ray-traced features are not heavily utilized in the measured settings, so their impact is minimal.

Settings Recommendations

Based on the measured FPS data, the optimal experience for this combo is at 1920x1080 with Low settings. The average FPS here is 56, which is the highest recorded across all resolutions and settings. This is the only configuration that approaches a smooth frame rate, and it is the recommended baseline for playability. At 1080p Medium, the average FPS drops to 43, which is still usable but may exhibit stutter in dense urban areas or during rapid camera movements. The minimum FPS at 1080p Medium is 37, with a maximum of 50, indicating some frame time variance.

For users willing to accept lower frame rates for better visuals, 1080p High yields 33 FPS average, while Ultra drops to 31 FPS. Neither is ideal for a flight simulator, where precise control inputs require consistent frame pacing. At 1440p, the situation worsens: Low settings produce 45 FPS, Medium 35 FPS, High 26 FPS, and Ultra 25 FPS. The 1440p Low setting is the second-best experience, but the drop from 1080p Low (56 FPS) to 1440p Low (45 FPS) shows a 20% reduction. At 4K, no setting achieves playable frame rates, with Low averaging 33 FPS and Medium only 26 FPS. High and Ultra both average 19 FPS, which is essentially a slideshow.

The data suggests that the best experience is a trade-off between resolution and visual fidelity. If a user prioritizes smoothness, 1080p Low is the clear choice. If they prefer higher resolution, 1440p Low is the only viable option, but it comes with a significant FPS penalty. The Medium preset at 1080p offers a middle ground, but the minimum FPS of 37 suggests occasional dips that could be noticeable. For this hardware, the recommendation is to start at 1080p Low and adjust upward only if frame rates permit.

Measured FPS Breakdown

At 1920x1080, the data shows a clear scaling pattern. Low settings deliver an average of 56 FPS, which is the highest measured value for this combo. Medium averages 43 FPS, with a minimum of 37 and maximum of 50. High averages 33 FPS, and Ultra averages 31 FPS. The transition from Low to Medium costs 13 FPS (23% reduction), while Medium to High costs 10 FPS (23% reduction), and High to Ultra costs only 2 FPS (6% reduction). This suggests that the Ultra preset adds minimal visual benefit over High while still taxing the GPU.

At 2560x1440, Low averages 45 FPS, Medium averages 35 FPS (min 30, max 40), High averages 26 FPS, and Ultra averages 25 FPS. The drop from 1080p Low to 1440p Low is 11 FPS (20%), and the drop from 1080p Medium to 1440p Medium is 8 FPS (23%). The 1440p High to Ultra delta is only 1 FPS, again indicating that Ultra provides no meaningful improvement at this resolution. The minimum FPS of 30 at 1440p Medium shows that the GPU is nearing its limit, as frame times become less consistent.

At 3840x2160, Low averages 33 FPS, Medium averages 26 FPS (min 22, max 30), High averages 19 FPS, and Ultra averages 19 FPS. The jump from 1440p Low to 4K Low is a 12 FPS drop (27%), and from 1440p Medium to 4K Medium is a 9 FPS drop (26%). The High and Ultra settings at 4K both hit 19 FPS, which is a hard floor likely caused by the GPU’s pixel fill rate limits. The 4K Medium minimum of 22 FPS suggests that even the most favorable frames are below playable thresholds. The data indicates that this combo is only suitable for 4K at Low settings, and even then, 33 FPS is marginal.

FAQ

Q: What is the highest average FPS achievable with this combo?

A: The highest measured average FPS is 56, achieved at 1920x1080 with Low settings. No other resolution or setting combination exceeds this value in the measured data.

Q: Can this combo run Microsoft Flight Simulator at 4K?

A: Yes, but only at Low settings, which yields an average of 33 FPS. Medium settings drop to 26 FPS, while High and Ultra both average 19 FPS. None of these are ideal for smooth gameplay.

Q: How does the Intel Arc B390 compare to its nearest GPU rivals?

A: The Arc B390 scores 1482 in 3DMark Steel Nomad DX12. It is 1.3% faster than the NVIDIA GeForce GT 520MX, 1.5% faster than the GeForce 800M, 2.5% faster than the GeForce GT 625 OEM, and 2.7% faster than the GeForce GT 710.

Q: What is the FPS difference between 1080p Low and 1440p Low?

A: At 1080p Low, the average FPS is 56. At 1440p Low, it drops to 45, a reduction of 11 FPS (20%). This indicates that the GPU is sensitive to resolution scaling even at the lowest settings.

Q: Which setting preset provides the most consistent frame times at 1080p?

A: The Medium preset at 1080p has measured minimum and maximum FPS of 37 and 50, respectively, with an average of 43. Low settings have no recorded min/max values, but the average of 56 suggests higher stability. Medium shows a 13 FPS spread between min and max.

Q: Does the Ultra preset offer any benefit over High in this game?

A: At 1080p, Ultra averages 31 FPS versus High’s 33 FPS, a 2 FPS difference. At 1440p, Ultra averages 25 FPS versus High’s 26 FPS. At 4K, both average 19 FPS. The data shows no meaningful FPS advantage to Ultra, while the visual gains are not measurable in these benchmarks.

CPU Role

The Intel Core Ultra 7 270K Plus is a high-end desktop processor that is severely underutilized in this configuration. It has 24 cores and 24 threads, with a base clock of 3.70 GHz and a boost clock of 5.50 GHz. The CPU’s cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3 cache. It supports DDR5 memory in dual-channel mode with a bandwidth of 115.2 GB/s. The processor’s benchmark scores are strong: Cinebench R23 multi-core scores 44253, single-core scores 2439, and Passmark multi-thread scores 68574. Its percentile rank against all CPUs is 96, meaning it outperforms 96% of tested processors.

In Microsoft Flight Simulator, the CPU is responsible for physics, AI traffic, and terrain loading. The data shows that the CPU is not the bottleneck in this combo, as the GPU consistently limits frame rates. For example, at 1080p Low, the CPU can feed the GPU enough data to achieve 56 FPS, but this is still far below what the CPU could theoretically support. The nearest CPU rivals in terms of average benchmark score are the Intel Xeon 6520P (93786, 0% delta), AMD EPYC 4564P (95183, -1.5% delta), AMD EPYC 9175F (95615, -1.9% delta), and AMD EPYC 4565P (95764, -2.1% delta). These are server-grade processors, indicating that the Core Ultra 7 270K Plus is in the same performance tier as enterprise silicon.

The CPU’s 24 threads are more than sufficient for Microsoft Flight Simulator’s multi-threaded workloads, but the game’s performance is capped by the GPU’s 7.680 TFLOPS FP32 throughput. The CPU’s high single-core performance (Cinebench R23 single-core score of 2439) helps maintain minimum FPS in CPU-bound scenarios, but the measured minimum FPS values (e.g., 37 at 1080p Medium) are still limited by the GPU. The data implies that swapping the Arc B390 for a discrete GPU would unlock the CPU’s full potential, but that is outside the scope of this analysis.

Resolution Scaling

The FPS drops from 1080p to 4K reveal a GPU-bound system. At Low settings, the average FPS progression is 56 (1080p) → 45 (1440p) → 33 (4K). This is a 20% drop from 1080p to 1440p and a further 27% drop from 1440p to 4K. The scaling is not linear, suggesting that the GPU’s pixel fill rate and memory bandwidth become increasingly strained as resolution increases. The Arc B390’s system shared memory is a likely culprit, as the memory bandwidth is system dependent and cannot match a dedicated GPU’s VRAM bandwidth.

At Medium settings, the progression is 43 (1080p) → 35 (1440p) → 26 (4K), with percentage drops of 19% and 26%, respectively. The minimum FPS at 1080p Medium is 37, at 1440p Medium is 30, and at 4K Medium is 22. These minimums show that the GPU is hitting hard limits at higher resolutions, with frame times becoming less consistent. At High settings, the progression is 33 (1080p) → 26 (1440p) → 19 (4K), with drops of 21% and 27%. At Ultra, the progression is 31 (1080p) → 25 (1440p) → 19 (4K), with drops of 19% and 24%.

The consistent pattern across all settings is that the 1440p to 4K transition incurs a larger percentage drop than the 1080p to 1440p transition. This indicates that the GPU’s ROP count of 24 is a fundamental constraint, as pixel processing demands scale quadratically with resolution. The CPU, with its 5.50 GHz boost clock and 24 threads, does not show signs of bottlenecking in this scaling analysis, as the FPS drops align with the GPU’s fill rate limitations. The data strongly suggests that this combo is best used at 1080p, with 1440p as a stretch goal and 4K only viable at Low settings for non-demanding scenarios.