Microsoft Flight Simulator

How This Combo Ranks

The combination of the Intel Core i5-12400 and the NVIDIA GeForce RTX 5070 ranks 357th out of 1,795 tested combos in Microsoft Flight Simulator. That places this pairing in the top 20% of all configurations tested, which is a strong result for a mid-range CPU paired with a current-generation GPU. The ranking indicates that this pairing is well-balanced for this specific flight simulator, avoiding the severe bottlenecking seen in lower-ranked combos where one component dramatically limits the other. Benchmark results show that this system is capable of delivering playable frame rates across most settings, though the data also reveals where the performance ceiling sits. The RTX 5070’s overall benchmark score places it in the 83rd percentile among all GPUs, while the i5-12400 sits in the 77th percentile among all CPUs, suggesting that the GPU has slightly more headroom than the processor in general compute tasks.

GPU Role

The NVIDIA GeForce RTX 5070 is built on the Blackwell 2.0 architecture using a 5 nm process from TSMC, with the GB205 chip containing 31,100 million transistors on a 263 mm² die. It carries 12 GB of GDDR7 memory on a 192-bit bus, delivering 672.0 GB/s of bandwidth. The memory clock runs at 1750 MHz, which translates to 28 Gbps effective. The GPU’s base clock is 2325 MHz with a boost clock of 2512 MHz. With 6,144 shading units, 192 texture mapping units, and 80 raster operation units, the RTX 5070 provides substantial raw compute power, including 48 RT cores and 192 tensor cores. Its FP32 performance is rated at 30.87 TFLOPS.

In Microsoft Flight Simulator, the GPU’s role becomes increasingly dominant as resolution and settings scale upward. The 12 GB VRAM capacity is adequate for the workloads presented by this simulator, even at 4K resolution with Ultra settings, where the system still maintains an average of 58.3 FPS. The GPU’s memory bandwidth of 672.0 GB/s helps feed the large texture sets and detailed scenery that flight simulators demand. The benchmark results indicate that the RTX 5070 is not the limiting factor at 1080p, where the CPU's single-thread performance becomes more relevant, but at 4K the GPU's capabilities are fully exercised. The GPU’s PassMark G3D score of 29,137 and its 83rd percentile ranking among all GPUs confirm that this is a capable part for this game’s visual demands.

Resolution Scaling

The measured FPS data shows a clear scaling pattern across resolutions. At 1080p with Low settings, the system achieves 178.6 FPS, which drops to 140.3 FPS at Medium, 106.4 FPS at High, and 100.2 FPS at Ultra. Moving to 1440p, the Low setting yields 140.7 FPS, Medium produces 110.8 FPS, High gives 81.9 FPS, and Ultra falls to 76.6 FPS. At 4K, the numbers compress significantly: Low hits 102.2 FPS, Medium reaches 80.6 FPS, High manages 59.2 FPS, and Ultra drops to 58.3 FPS.

The scaling pattern reveals that the limiting component shifts as resolution increases. From 1080p Low to 4K Low, the frame rate drops by 76.4 FPS, a 43% reduction. From 1080p Ultra to 4K Ultra, the drop is 41.9 FPS, a 42% reduction. This consistent proportional drop across settings suggests that the GPU is the primary constraint at higher resolutions, while the CPU’s influence is more noticeable at 1080p where frame rates exceed 140 FPS. The fact that 4K Ultra (58.3 FPS) and 4K High (59.2 FPS) produce nearly identical results indicates that the system is hitting a performance wall at this resolution, likely due to the combined load on both CPU and GPU. At 1080p, the delta between Low and Ultra is 78.4 FPS, showing that settings have a larger impact when the GPU is less stressed.

FAQ

Q: Can this combo handle 4K Ultra settings in Microsoft Flight Simulator?

A: Yes, but just barely. The measured average FPS at 3840x2160 with Ultra settings is 58.3 FPS, which is above the 60 FPS threshold only marginally. For smoother gameplay, dropping to High settings at 4K yields 59.2 FPS, a negligible difference, suggesting the system is GPU-limited at this resolution.

Q: How does the CPU compare to its nearest rivals in general benchmark performance?

A: The Intel Core i5-12400 has an average benchmark score of 19,850. Its closest rival, the Intel Core i7-9700, scores 19,831, putting the i5-12400 just 0.1% ahead. The AMD Ryzen Threadripper PRO 5995WX scores 19,928, which is 0.4% higher, while the Intel Core i5-11600K scores 19,771, placing it 0.4% behind.

Q: What is the best resolution for maximizing frame rate with this combo?

A: If maximum FPS is the goal, 1920x1080 with Low settings delivers 178.6 FPS. For a balance of visual quality and performance, 1440p with Medium settings provides 110.8 FPS, which is smooth for a flight simulator. At 4K, even Low settings only reach 102.2 FPS, so 1440p is the sweet spot.

Q: Is the GPU or CPU the limiting factor at 1080p?

A: At 1080p, the CPU becomes more relevant. The i5-12400 has a single-thread score of 910 in 3DMark and 2,249 in Cinebench R23, which are solid numbers. The fact that 1080p Low (178.6 FPS) is significantly higher than 4K Low (102.2 FPS) indicates that the GPU is still doing heavy work, but the CPU's 6 cores and 12 threads handle the simulation logic adequately at lower resolutions.

Q: How does the RTX 5070 compare to the RTX 3090 in benchmark scores?

A: The RTX 5070 has an average benchmark score of 41,687, while the RTX 3090 scores 41,441. This puts the RTX 5070 0.6% ahead of the RTX 3090. The RTX 5070 also ranks in the 83rd percentile among all GPUs.

Q: What settings provide the closest to 60 FPS at 4K?

A: At 3840x2160, High settings average 59.2 FPS and Ultra settings average 58.3 FPS. Both are within 2 FPS of each other, so choosing Ultra only costs 0.9 FPS. Medium settings at 4K provide 80.6 FPS, which is a substantial improvement if you can accept lower visual fidelity.

Measured FPS Breakdown

The measured data provides a complete picture of performance across three resolutions and four settings levels. All results are average FPS values, with no minimum or maximum frame data recorded.

1920x1080 (1080p):

• Low: 178.6 FPS
• Medium: 140.3 FPS
• High: 106.4 FPS
• Ultra: 100.2 FPS

2560x1440 (1440p):

• Low: 140.7 FPS
• Medium: 110.8 FPS
• High: 81.9 FPS
• Ultra: 76.6 FPS

3840x2160 (4K):

• Low: 102.2 FPS
• Medium: 80.6 FPS
• High: 59.2 FPS
• Ultra: 58.3 FPS

The data shows that at every resolution, the step from Low to Medium costs roughly 20-25% of performance. The jump from Medium to High costs another 20-25% at 1080p and 1440p, but at 4K the gap narrows to about 27% between Medium and High. The difference between High and Ultra is consistently small across all resolutions: 5.8% at 1080p, 6.5% at 1440p, and only 1.5% at 4K. This suggests that Ultra settings in Microsoft Flight Simulator offer diminishing returns relative to their performance cost, particularly at higher resolutions. For 4K owners, running High instead of Ultra will produce nearly identical frame rates while potentially reducing visual noise.

CPU Role

The Intel Core i5-12400 is a 6-core, 12-thread processor from the Alder Lake architecture, built on Intel's 10 nm process. It has a base clock of 2.50 GHz and a boost clock of 4.40 GHz, with a 65 W TDP. The cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache. It supports both DDR4 and DDR5 memory in dual-channel configuration and uses the Intel Socket 1700. The CPU has an integrated UHD Graphics 730, but for gaming with the RTX 5070, that iGPU is irrelevant.

In Microsoft Flight Simulator, the CPU's role is significant because the simulator's engine handles physics, weather, and AI traffic calculations. The i5-12400’s benchmark results indicate strong single-thread performance, which is critical for this game. Its 3DMark single-thread score is 910, and its Cinebench R23 single-thread score is 2,249. Multi-threaded performance is also solid: the Cinebench R23 multi-core score is 15,935, and the PassMark multi-thread score is 18,747. The CPU’s average benchmark score of 19,850 places it in the 77th percentile among all CPUs.

The CPU's 12 threads help maintain playable frame rates at 1080p, where the GPU is not the bottleneck. The data shows that at 1080p Low, the system reaches 178.6 FPS, which is a high enough frame rate that CPU limitations would become apparent if the processor were weaker. The i5-12400’s nearest rival, the Intel Core i7-9700, scores nearly identically (19,831 vs. 19,850), indicating that this CPU generation offers performance comparable to older high-end parts. For this flight simulator, the CPU’s single-thread performance is adequate to feed the RTX 5070 at 1440p and 4K, where the GPU becomes the primary constraint. However, at 1080p with lower settings, the CPU is likely the limiting factor, as evidenced by the fact that 1080p Low (178.6 FPS) is not dramatically higher than 1440p Low (140.7 FPS) — a smaller gap than the resolution difference alone would suggest.