Microsoft Flight Simulator

The Intel Core i5-14600K paired with the AMD Radeon RX 6800 XT delivers a distinctly GPU-bound experience in Microsoft Flight Simulator, with performance scaling that closely tracks the render resolution. Across the three tested resolutions, the frame rate drops are steep but consistent, indicating that the graphics card, rather than the processor, is the primary constraint in this simulation. This analysis examines the measured data to characterize the limiting component and contextualize the combo’s standing among 1,795 tested configurations.

Resolution Scaling

Resolution scaling in this title is aggressive for this combo. Moving from 1920x1080 to 2560x1440 reduces the average frame rate by roughly 24–26% across all settings, while the jump from 1440p to 4K (3840x2160) imposes an additional 25–30% penalty. The steepest drop occurs when shifting from 1080p High (90.4 FPS) to 1440p High (68.6 FPS), a 21.8 FPS reduction. From 1440p High to 4K High (51.5 FPS), the loss is another 17.1 FPS. This pattern is uniform across Low, Medium, and Ultra presets, confirming that pixel throughput is the dominant cost.

The data reveals a near-linear relationship between pixel count and frame rate, which is a hallmark of GPU saturation. For instance, at Low settings, the combo produces 153.4 FPS at 1080p, 122.7 FPS at 1440p, and 87.4 FPS at 4K. The 4K result is 43% lower than the 1080p figure, while the 1440p result is 20% lower. This scaling suggests that the RX 6800 XT’s 512.0 GB/s memory bandwidth and 20.74 TFLOPS of FP32 compute are being fully utilized, leaving little headroom for the CPU to compensate. In contrast, the i5-14600K’s single-thread performance (4,642 in Cinebench R23) is ample for flight simulators, which traditionally favor low-latency single-core execution.

Notably, the 4K Ultra result (51 FPS) is nearly identical to the 4K High result (51.5 FPS), differing by only 0.5 FPS. This negligible gap indicates that beyond a certain quality threshold, the renderer’s additional effects (shadows, reflections, volumetric clouds) are not the bottleneck; instead, the raw pixel fill rate is the limiting factor. Conversely, at 1080p, the spread between Low (153.4 FPS) and Ultra (83.2 FPS) is 70.2 FPS, showing that at lower resolutions, settings have a pronounced impact because the GPU has spare throughput to process enhanced visuals.

GPU Role

The Radeon RX 6800 XT’s role in this combo is pivotal, as its 16 GB of GDDR6 memory on a 256-bit bus (512.0 GB/s bandwidth) provides the necessary capacity for high-resolution textures. The card’s boost clock of 2250 MHz and game clock of 2015 MHz, built on the RDNA 2.0 architecture with 4,608 shading units, drive the observed frame rates. The 4K Ultra result of 51 FPS is precisely at the threshold where the GPU’s pixel rate (288.0 GPixel/s) and texture rate (648.0 GTexel/s) begin to throttle under load.

The GPU’s 87th percentile ranking among all GPUs (based on average benchmark score) aligns with its measured performance here. Its nearest rivals in synthetic benchmarks—the Intel Arc A550M (0.5% faster) and NVIDIA RTX A1000 (1.7% slower)—do not appear in this game’s measured data, but their proximity in compute suggests the RX 6800 XT is operating near its expected ceiling. The card’s 16 GB capacity is particularly relevant for Microsoft Flight Simulator, which is known for streaming large terrain and aircraft models; at 4K Ultra, this capacity prevents texture swapping, allowing the 51 FPS average to hold without stutter-inducing memory spills.

The i5-14600K complements this GPU with 20 threads across 14 cores (6 performance, 8 efficient), boosting to 5.30 GHz. Its 93rd percentile ranking among all CPUs and an average benchmark score of 49,166 place it 0.2% behind the AMD Ryzen 9 5950X and 0.4% ahead of the i5-14600KF. In this game, the CPU’s single-thread capability (4,642 Cinebench R23) is sufficient to feed the GPU at 1080p Low (153.4 FPS), but the GPU-bound nature of the workload means that further CPU headroom would not translate to higher frame rates at 4K.

How This Combo Ranks

Within the database of 1,795 tested CPU-GPU combinations, this pairing ranks 617th for Microsoft Flight Simulator. This places it in the 65th percentile of all combos, meaning 34% of tested configurations deliver higher average frame rates. The ranking is influenced by the GPU’s 87th percentile standing and the CPU’s 93rd percentile standing, but the simulation’s sensitivity to GPU compute means the RX 6800 XT’s mid-range positioning (relative to top-tier cards) caps the overall score.

The combo’s rank is consistent with its hardware tier. The i5-14600K outperforms the Ryzen 9 5950X by 0.2% in average CPU benchmarks, yet the RX 6800 XT trails the GeForce RTX 4070 Ti SUPER by 2.6% in GPU benchmarks. Since the game is GPU-bound, the GPU’s relative weakness (compared to the CPU’s strength) is the deciding factor. A combo pairing this CPU with a faster GPU would rank higher, but the data for such a pairing is not available in this pack. Conversely, pairing this GPU with a slower CPU would likely not reduce frame rates at 4K, given the GPU saturation observed.

The rank of 617 out of 1,795 is respectable for a mid-to-high-end setup. It indicates that this configuration is not a top-tier performer for flight simulation, but it comfortably exceeds the median. The measured FPS at 1440p High (68.6 FPS) and 1080p Ultra (83.2 FPS) are both playable, suggesting the combo is well-suited for high-refresh-rate monitors at 1080p or standard 60 Hz displays at 1440p.

Measured FPS Breakdown

The complete FPS table is as follows:

1920x1080:

• Low: 153.4 FPS
• Medium: 120.9 FPS
• High: 90.4 FPS
• Ultra: 83.2 FPS

2560x1440:

• Low: 122.7 FPS
• Medium: 97.1 FPS
• High: 68.6 FPS
• Ultra: 68.7 FPS

3840x2160:

• Low: 87.4 FPS
• Medium: 67.1 FPS
• High: 51.5 FPS
• Ultra: 51.0 FPS

At 1080p, the combo delivers a wide performance envelope, from 153.4 FPS at Low to 83.2 FPS at Ultra. The gap between High and Ultra is only 7.2 FPS, suggesting that Ultra settings impose a modest cost over High at this resolution. At 1440p, the High and Ultra results are nearly identical (68.6 vs 68.7 FPS), meaning there is no reason to drop from Ultra to High for a frame rate gain—the GPU is already maxed. At 4K, all settings produce results between 51 and 87.4 FPS, with Low being the only preset that exceeds 60 FPS. The 4K Medium result (67.1 FPS) is 16.1 FPS higher than 4K High, indicating that Medium is the sweet spot for 4K playability.

The data shows that the combo can achieve 60+ FPS at 1080p on all settings, at 1440p on Low and Medium, and at 4K only on Low. For users targeting 4K Ultra, the 51 FPS average is below the 60 FPS threshold but remains playable on adaptive sync displays. At 1440p Ultra, the 68.7 FPS average exceeds 60 FPS, making this the highest quality preset that maintains smooth performance.

FAQ

Q: What is the best resolution for 60+ FPS with this combo?

A: At 1080p, all settings (Low through Ultra) exceed 60 FPS, with the lowest being 83.2 FPS at Ultra. At 1440p, only Low (122.7 FPS) and Medium (97.1 FPS) exceed 60 FPS; High and Ultra both fall below (68.6 and 68.7 FPS, though they are above 60). At 4K, only Low (87.4 FPS) exceeds 60 FPS.

Q: Is the CPU or GPU the bottleneck at 4K Ultra?

A: The 4K Ultra result (51 FPS) is nearly identical to 4K High (51.5 FPS), differing by 0.5 FPS. This indicates the GPU is fully saturated, as raising settings does not lower the frame rate further. The i5-14600K’s single-thread score (4,642 Cinebench R23) provides ample headroom, so the GPU is the limiting component.

Q: How does this combo compare to the Ryzen 9 5950X in CPU benchmarks?

A: The i5-14600K has an average benchmark score of 49,166, which is 0.2% higher than the Ryzen 9 5950X’s 49,062. This places the i5-14600K as the slight leader in synthetic CPU tests, but this difference does not impact the game’s GPU-bound frame rates.

Q: What is the frame rate difference between High and Ultra at 1440p?

A: The difference is negligible: 68.6 FPS at High versus 68.7 FPS at Ultra, a 0.1 FPS gap. This indicates that at 1440p, the GPU is the limiting factor, and Ultra settings do not incur a measurable performance penalty over High.

Q: Does the RX 6800 XT’s 16 GB VRAM affect 4K performance?

A: The 16 GB GDDR6 memory on a 256-bit bus (512.0 GB/s bandwidth) is sufficient for 4K textures, as evidenced by the 51.5 FPS average at 4K High. The card’s 87th percentile GPU ranking and its position 1.7% behind the NVIDIA RTX A1000 in synthetic benchmarks suggests the VRAM capacity is not a limiting factor in this title.

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

A: This combo ranks 617th out of 1,795 tested CPU-GPU combinations for Microsoft Flight Simulator. This places it in the 65th percentile, meaning 34% of configurations deliver higher average frame rates.