Microsoft Flight Simulator

How This Combo Ranks

In the database of tested CPU-GPU combinations for Microsoft Flight Simulator, the Intel Core i9-14900K paired with the AMD Radeon RX 6600 XT lands at rank 1247 out of 1795 tested combos. That places this pairing in the lower third of the field, a reflection of the GPU being the limiting factor in a game that leans heavily on both processor and graphics resources. The combo sits at roughly the 69th percentile from the bottom, meaning a substantial majority of other configurations deliver higher average frame rates in this specific title.

The processor itself is not the constraint here. The i9-14900K holds a 97th percentile ranking among all CPUs, with an average benchmark score of 79824. Its closest rival, the AMD EPYC 7413, scores 80041, a delta of -0.3%, meaning the i9 is essentially neck-and-neck with a server-class chip. Against the Intel Core i9-14900KF, the difference is just 0.7%, and the Core Ultra 7 265KF and 265K trail by the same 0.7% and 0.9% respectively. This CPU is capable of feeding far more powerful graphics hardware, but in this configuration it is held back by the RX 6600 XT.

The GPU, meanwhile, ranks at the 71st percentile among all graphics cards, with an average benchmark score of 27985. Its nearest rival, the NVIDIA GeForce GTX 980 Ti, scores 27956, a negligible 0.1% difference. The RX 6600 XT actually edges out the RTX 3070 by -0.9% in the database's aggregate scoring, though that delta is within noise. The data shows a clear mismatch: a top-tier 14th Gen processor strapped to a mid-range RDNA 2 card. The result is a combo that performs respectably at lower resolutions but struggles to maintain playable frame rates at 4K with higher settings.

GPU Role

The AMD Radeon RX 6600 XT is built on the Navi 23 chip using the RDNA 2.0 architecture, fabricated on a 7 nm process from TSMC. It packs 11,060 million transistors into a 237 mm² die, with a transistor density of 46.7 million per square millimeter. The card features 8 GB of GDDR6 memory on a 128-bit bus, delivering 256.0 GB/s of bandwidth. Memory clock runs at 2000 MHz, which translates to 16 Gbps effective. The GPU's base clock is 1968 MHz, with a game clock of 2359 MHz and a boost clock of 2589 MHz.

In Microsoft Flight Simulator, these specifications translate into a graphics card that can handle the game's demanding scenery rendering and complex shader work, but only within limits. The 8 GB VRAM buffer is the most critical constraint at higher resolutions and settings. The card's 2048 shading units, 128 texture mapping units, and 64 raster operation units provide a baseline of compute capability, with a pixel rate of 165.7 GPixel/s and a texture rate of 331.4 GTexel/s. Floating point performance sits at 10.60 TFLOPS for FP32 and 21.21 TFLOPS for FP16 with a 2:1 ratio.

The card also includes 32 ray tracing cores, though Microsoft Flight Simulator's use of ray tracing is limited. The GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, all of which the game can leverage. The 160 W TDP and single 8-pin power connector suggest a modest power envelope, with a suggested 450 W PSU. The interface is PCIe 4.0 x8, which on a platform like the i9-14900K's is not a bottleneck in this title.

The benchmark data shows the GPU's raw compute scores: 82736 in Geekbench OpenCL, 89263 in Vulkan, and 108608 in Metal. In Passmark, the G3D score is 16461, with G2D at 912. DirectX 12 scores are notably lower at 61, while DirectX 11 hits 163 and DirectX 10 at 109. These figures indicate the card is more competitive in older or compute-heavy workloads than in modern raster-heavy DX12 titles, which partially explains its performance ceiling in Flight Simulator.

Resolution Scaling

The measured FPS data reveals how this combo scales across resolutions, and the pattern is telling. At 1080p with Low settings, the system hits 101.7 FPS, a very playable figure. Moving to 1440p Low drops that to 79.8 FPS, a reduction of roughly 21.5%. At 4K Low, the average falls to 58.9 FPS, another 26.2% drop from 1440p. This scaling is relatively linear, suggesting that at Low settings, the GPU is still the primary limiter, though the CPU is doing its share of work.

The picture changes dramatically at Ultra settings. At 1080p Ultra, the combo manages 57.3 FPS. At 1440p Ultra, that falls to 45.9 FPS, and at 4K Ultra, it bottoms out at 33.2 FPS. The drop from 1080p to 1440p at Ultra is 19.9%, and from 1440p to 4K Ultra is 27.7%. This steeper decline at higher settings indicates that the GPU's compute and memory bandwidth are being saturated, and the 8 GB VRAM buffer is likely being exceeded at 4K Ultra, causing additional performance degradation.

The limiting component becomes clear when comparing the High and Medium settings. At 1080p High, the combo delivers 57.6 FPS, nearly identical to the 57.3 FPS at Ultra. This plateau suggests that once the GPU reaches a certain load threshold, the CPU's ability to feed it becomes the constraint. The i9-14900K's strengths in single-threaded performance — a Cinebench R23 single-core score of 7040 and a Geekbench single-core score of 3064 — are put to work, but the RX 6600 XT cannot push frame rates higher regardless of headroom.

The data indicates that this combo is best suited for 1080p gaming with High or Ultra settings, where it hovers around 57-58 FPS. At 1440p, Medium settings yield 62.7 FPS, which is playable, but High settings drop to 48.6 FPS. At 4K, only Low settings (58.9 FPS) approach playability, while Medium (46.6 FPS), High (34.7 FPS), and Ultra (33.2 FPS) all fall below the 60 FPS threshold that many users consider necessary for smooth flight simulation.

Measured FPS Breakdown

The full dataset of measured average FPS for this combo in Microsoft Flight Simulator is as follows:

At 1920x1080, the system delivers 101.7 FPS on Low, 77.9 FPS on Medium, 57.6 FPS on High, and 57.3 FPS on Ultra. The jump from Low to Medium costs 23.8 FPS, while the drop from Medium to High costs 20.3 FPS. The difference between High and Ultra is negligible at just 0.3 FPS, reinforcing the earlier observation that the GPU hits a wall around 57-58 FPS regardless of further quality increases.

At 2560x1440, Low settings yield 79.8 FPS, Medium drops to 62.7 FPS, High comes in at 48.6 FPS, and Ultra falls to 45.9 FPS. The scaling from Low to Medium is a 17.1 FPS reduction, Medium to High is 14.1 FPS, and High to Ultra is 2.7 FPS. The diminishing returns at the top end are consistent across resolutions, suggesting the GPU's compute units are fully utilized by High settings, and Ultra adds little beyond more demanding shader work.

At 3840x2160, the numbers are 58.9 FPS on Low, 46.6 FPS on Medium, 34.7 FPS on High, and 33.2 FPS on Ultra. The delta between Low and Medium is 12.3 FPS, Medium to High is 11.9 FPS, and High to Ultra is just 1.5 FPS. At this resolution, even Low settings cannot maintain a locked 60 FPS, and Ultra dips below 35 FPS. The 8 GB VRAM buffer is almost certainly a factor here, as the card's 256.0 GB/s bandwidth and 128-bit bus struggle with 4K textures and geometry.

Notably, the minimum and maximum FPS values are not recorded in the dataset, so only average frame rates are available for analysis. The data shows that this combo is consistently playable at 1080p across all settings, marginally playable at 1440p up to Medium, and only viable at 4K with Low settings. The i9-14900K's raw compute — a Cinebench R23 multi-core score of 49872 and Passmark multi-thread score of 58674 — provides ample headroom for the game's simulation logic, but the RX 6600 XT's 10.60 TFLOPS of FP32 performance simply cannot push higher frame rates at demanding settings.

FAQ

Q: What is the best resolution and settings combination for this CPU-GPU pairing in Microsoft Flight Simulator?

A: The data shows 1080p with High or Ultra settings delivers 57.6 FPS and 57.3 FPS respectively, which is the most visually demanding configuration that maintains near-60 FPS. For a smoother experience, 1080p Medium hits 77.9 FPS.

Q: How much performance drops when moving from 1080p to 4K at the same settings?

A: At Low settings, the average FPS falls from 101.7 at 1080p to 58.9 at 4K, a reduction of 42.8 FPS. At High settings, it drops from 57.6 to 34.7 FPS, a reduction of 22.9 FPS.

Q: Is this combo better suited for CPU-bound or GPU-bound scenarios?

A: The data indicates GPU-bound performance at higher resolutions and settings. The i9-14900K ranks at the 97th percentile among CPUs, while the RX 6600 XT ranks at the 71st percentile among GPUs. Frame rates decline steeply with resolution, which is characteristic of a GPU-limited configuration.

Q: How does the RX 6600 XT compare to its nearest rivals in aggregate benchmark scores?

A: The RX 6600 XT has an average benchmark score of 27985. The NVIDIA GeForce GTX 980 Ti scores 27956 (0.1% lower), the AMD Radeon R9 M395X scores 27883 (0.4% lower), the NVIDIA GeForce RTX 3070 scores 28238 (0.9% higher), and the AMD FirePro S7150 scores 28409 (1.5% higher).

Q: What frame rate can users expect at 1440p with Medium settings?

A: The measured average FPS is 62.7, which is above the 60 FPS threshold and represents the highest settings at 1440p that remain consistently playable in this dataset.

Q: Does the combo maintain 60 FPS at 4K under any settings?

A: No. The highest average FPS at 3840x2160 is 58.9 on Low settings, which falls just short of 60 FPS. All other 4K settings — Medium at 46.6, High at 34.7, and Ultra at 33.2 — are well below 60 FPS.