Microsoft Flight Simulator

# Microsoft Flight Simulator — AMD Ryzen 7 7800X3D + AMD Radeon RX 6750 XT

The AMD Ryzen 7 7800X3D paired with the AMD Radeon RX 6750 XT is a compelling mid-range flight simulation platform, and the measured frame rates reveal a clear story about its strengths and limits. At 1080p, this combo delivers smooth performance across all presets, but the data shows a predictable and significant drop as resolution climbs to 1440p and 4K. The 12 GB of VRAM on the GPU, combined with the CPU's 8-core, 16-thread design and 96 MB of shared L3 cache, shapes how this game behaves at every quality level. This analysis breaks down the measured FPS results, interprets what they mean against other tested combinations, and explores the role each component plays in Microsoft Flight Simulator's demanding environments.

Settings Recommendations

The measured FPS data points to High settings at 2560x1440 as the sweet spot for this combo. At 1440p High, the average frame rate is 60.5 FPS, which is just above the commonly accepted 60 FPS threshold for smooth play. This setting balances visual fidelity with performance, offering a substantial upgrade over Medium (77.8 FPS) without the steep cost of Ultra (58.2 FPS). The 2.3 FPS difference between High and Ultra at this resolution is negligible for the visual quality gain, but the data shows High provides a more stable experience.

At 1080p, High settings (75.9 FPS) are the recommended choice for users prioritizing frame rate headroom. The 1080p Ultra preset (72.3 FPS) is only 3.6 FPS slower than High, so those who want maximum detail can still do so comfortably. However, the 1080p Medium preset (98.3 FPS) offers a massive jump in fluidity, nearly 23 FPS higher than High, making it the ideal choice for users with high-refresh-rate monitors or those who prefer extra responsiveness over minor visual enhancements.

For 4K users, the data is less forgiving. The 4K High preset (46.2 FPS) is the only quality level that approaches playability, while 4K Ultra (40.4 FPS) dips below 45 FPS, which can feel choppy in a simulator where smooth camera panning matters. Given that 4K Medium (59.3 FPS) is only 1.1 FPS slower than 4K High, 4K Medium is the best compromise — it delivers near-60 FPS performance while retaining decent terrain and aircraft detail. The 4K Low preset (71.5 FPS) exists for those who prioritize frame rate above all, but it sacrifices too much visual immersion for a flight sim.

How This Combo Ranks

This specific combination of the Ryzen 7 7800X3D and RX 6750 XT ranks 844th out of 1795 tested combos in Microsoft Flight Simulator, placing it in the upper-middle tier of all configurations. This percentile position makes sense given the GPU's overall benchmark standing: the RX 6750 XT sits at the 79th percentile among all GPUs, while the CPU is at the 87th percentile among all CPUs. The combo ranking reflects that this is a balanced pairing — neither component is a bottleneck, but neither is top-tier either.

The data implies that this combo outperforms roughly 53% of all tested configurations, which is respectable for a mid-range setup. When compared to the GPU's nearest rivals, the RX 6750 XT's average benchmark score (35,327) is nearly identical to the AMD Radeon RX 5600M (35,264, +0.2% delta) and the NVIDIA GeForce RTX 5070 Ti Mobile (35,435, -0.3% delta). This suggests that in synthetic tests, the RX 6750 XT is on par with mobile RTX 5070 Ti performance, but in actual flight sim workloads, the desktop card's 12 GB VRAM and higher clock speeds may give it an edge that synthetic scores don't fully capture.

The CPU side is equally telling. The Ryzen 7 7800X3D's average benchmark score (31,580) is within 0.6% of the Intel Core i7-12700F (31,543) and the AMD Ryzen 7 8700G (31,407). This means the CPU's performance class is well-established, and the combo's rank is likely more influenced by GPU limitations at higher resolutions than by CPU headroom.

GPU Role

The AMD Radeon RX 6750 XT brings 12 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s of bandwidth. In Microsoft Flight Simulator, which streams vast terrain and photogrammetry data, this memory capacity is crucial — the data shows that at 4K, even Medium settings (59.3 FPS) require enough VRAM to handle complex scenery without stuttering. The 12 GB allocation is generous for a card in this class, and it likely prevents texture swapping that could tank frame rates below the measured averages.

Clock speeds are another differentiator. The GPU's base clock is 2150 MHz, with a boost clock of 2600 MHz and a game clock of 2495 MHz. These aggressive clocks, paired with 2560 shading units and 160 texture mapping units, explain why the card can push 127.1 FPS at 1080p Low. The 64 ROPs and 40 ray-tracing cores are less relevant in this sim, but the raw rasterization power (13.31 TFLOPS FP32) drives the measured results. The pixel rate of 166.4 GPixel/s and texture rate of 416.0 GTexel/s are the physical limits that explain the frame rate drops at higher resolutions — 4K requires four times the pixels of 1080p, and the data shows a predictable scaling penalty.

The GPU's 79th percentile ranking among all GPUs aligns with its measured performance here. It's not a flagship, but it's clearly capable of running this sim at playable frame rates with the right settings.

FAQ

Q: What is the best resolution for this combo in Microsoft Flight Simulator?

A: The data shows 1080p High (75.9 FPS) is the most comfortable, but 1440p High (60.5 FPS) offers the best balance of visual quality and performance. 4K is playable only at Medium (59.3 FPS) or Low (71.5 FPS).

Q: How much faster is the Low preset compared to Ultra at 1080p?

A: At 1080p, Low (127.1 FPS) is 75.8% faster than Ultra (72.3 FPS). That's a massive 54.8 FPS difference, indicating that Ultra settings impose a significant GPU load.

Q: Does the 12 GB VRAM matter for this game at 4K?

A: Yes, the data indicates 4K Medium (59.3 FPS) is viable, which suggests the 12 GB capacity is sufficient to avoid memory-related crashes or severe stutters at that resolution.

Q: Is this combo better suited for 1080p or 1440p?

A: Both work well — 1080p High (75.9 FPS) and 1440p High (60.5 FPS) are both above 60 FPS. However, the 1440p Ultra (58.2 FPS) dips just below, so 1080p offers more headroom for demanding scenes.

Q: How does the RX 6750 XT compare to the RTX 3080 in synthetic benchmarks?

A: The RX 6750 XT's average score (35,327) is 1.3% lower than the RTX 3080 (35,787), but in this game, the measured FPS tells the real story — and that story depends entirely on the resolution.

Q: What CPU benchmark score does the 7800X3D achieve in Cinebench R23?

A: The CPU scores 29,149 in Cinebench R23 multicore and 4,115 in single-core, which places it in the top tier for gaming workloads.

Resolution Scaling

The measured FPS reveals a clear resolution scaling pattern that underscores the GPU's role as the primary limiter at higher resolutions. Moving from 1080p to 1440p at High settings, the frame rate drops from 75.9 FPS to 60.5 FPS — a 20.3% reduction. From 1440p to 4K High, it drops from 60.5 FPS to 46.2 FPS — a 23.6% reduction. This consistent ~20-24% drop per resolution step is classic GPU-bound behavior, as the CPU (with its 96 MB L3 cache and 5.0 GHz boost clock) has ample headroom to feed frames at all these resolutions.

At Low settings, the scaling is even more dramatic: 1080p Low (127.1 FPS) drops to 1440p Low (100.2 FPS, -21.2%) and then to 4K Low (71.5 FPS, -28.6%). The larger percentage drop at 4K Low suggests that even with minimal graphics load, the GPU's raw pixel throughput (166.4 GPixel/s) becomes the bottleneck. The 4K Low result of 71.5 FPS is still playable, but the fact that it's only 47 FPS higher than 4K Ultra (40.4 FPS) — a 43.7% difference — shows how much headroom the GPU has when settings are reduced.

The data implies that at 1080p, the combo is often CPU-limited in lighter scenes, as evidenced by the 127.1 FPS at Low. But as resolution increases, the GPU's fill rate and memory bandwidth become the constraining factors. This is a healthy balance for a mid-range system — the CPU can stretch its legs at 1080p, while the GPU takes over at 1440p and 4K.

CPU Role

The AMD Ryzen 7 7800X3D is an 8-core, 16-thread processor based on Zen 4 architecture, running on the AM5 socket. Its base clock of 4.20 GHz and boost clock of 5.00 GHz, combined with a massive 96 MB shared L3 cache, make it exceptionally well-suited for Microsoft Flight Simulator's complex physics and AI computations. The CPU's Cinebench R23 multicore score of 29,149 and single-core score of 4,115 confirm its strength in both multi-threaded and lightly-threaded workloads.

In this game, the CPU's role is evident in the 1080p Low result (127.1 FPS), which is likely near the CPU's frame-generation limit. The 16 threads handle the sim's simulation layer, while the large cache reduces memory latency for frequently accessed terrain data. The CPU's 83.2 GB/s memory bandwidth (dual-channel DDR5) ensures that the GPU never starves for data, even at 4K with complex scenery.

Notably, the CPU's 3D V-Cache (implied by the X3D designation) is a key factor here — its 96 MB L3 cache is over five times larger than typical processors, and benchmark results (avg score 31,580, 87th percentile) suggest it handles the sim's data streaming efficiently. The CPU's nearest rival, the Intel Core i7-12700F (31,543, +0.1% delta), is virtually identical in synthetic scores, but the 7800X3D's cache advantage likely translates to more consistent frame times in flight sim's variable workloads.

Measured FPS Breakdown

1080p (1920x1080):

• Low: 127.1 FPS
• Medium: 98.3 FPS
• High: 75.9 FPS
• Ultra: 72.3 FPS

The 1080p results show a wide spread: Low to Ultra represents a 43.1% performance drop. The gap between High and Ultra is only 3.6 FPS, suggesting that Ultra's additional effects (likely shadows and reflections) have diminishing returns at this resolution.

1440p (2560x1440):

• Low: 100.2 FPS
• Medium: 77.8 FPS
• High: 60.5 FPS
• Ultra: 58.2 FPS

At 1440p, the spread narrows slightly — Low to Ultra is a 41.9% drop. The High to Ultra gap remains small (2.3 FPS), but Medium to High is a 22.2% reduction, indicating that High settings introduce significant GPU load.

4K (3840x2160):

• Low: 71.5 FPS
• Medium: 59.3 FPS
• High: 46.2 FPS
• Ultra: 40.4 FPS

The 4K results reinforce the GPU bottleneck: even Low settings (71.5 FPS) struggle to maintain 72 FPS, and Ultra (40.4 FPS) is 43.5% slower than Low. The Medium preset (59.3 FPS) is the only 4K option that stays above 50 FPS, making it the recommended choice for 4K displays.

Across all resolutions, the data shows that the RX 6750 XT's 12 GB VRAM and 432.0 GB/s bandwidth are sufficient to avoid catastrophic frame drops, but the card's 13.31 TFLOPS compute limits its ability to push Ultra settings at high resolutions. The combo ranks 844th of 1795, which is a solid mid-pack result for a system that can handle 1440p High at 60 FPS.