Minecraft

The Intel Core i5-9400 paired with the NVIDIA GeForce RTX 3080 Ti is a lopsided pairing in Minecraft, where the GPU is capable of immense frame rates but the six-core CPU sets a ceiling for the highest settings. The data shows that this combination ranks in the 1203rd position out of 3710 tested combos, placing it in the upper third of all configurations. This is a strong result, but the performance distribution across settings reveals a clear pattern: the game becomes increasingly CPU-limited as you demand more from the graphics engine, while the GPU remains the dominant force at lower settings.

Settings Recommendations

Based on the measured FPS rows, the optimal experience is found at Medium settings across all resolutions. This preset delivers the most balanced combination of visual quality and frame rate headroom. At 1920x1080, Medium produces an average of 418 FPS, which is only slightly below the Low preset's 455 FPS but offers substantially better visual fidelity. More importantly, Medium is the only preset that provides measured minimum and maximum FPS values, showing a stable range of 356 to 481 FPS at 1080p. This indicates a consistent frame delivery that avoids the severe dips that can occur at Ultra settings.

At 2560x1440, Medium again emerges as the sweet spot with an average of 316 FPS and a measured range of 269 to 364 FPS. This is more than double the 157 FPS average found at Ultra, which appears to hit a wall imposed by the CPU's six threads. The High preset at 1440p offers 251 FPS average, which is still excellent, but the step from High to Medium costs only 65 FPS while gaining the stability of a measured minimum. For 4K gaming, Medium delivers 165 FPS average with a range of 141 to 190 FPS, which is the only 4K preset with a reported minimum FPS. This makes Medium the safest choice for a tear-free experience on a high-refresh-rate display.

Avoid Ultra settings entirely with this combo. The data shows Ultra drops to 249 FPS at 1080p, 157 FPS at 1440p, and just 82 FPS at 4K. The gap between High and Ultra is disproportionately large, suggesting that Ultra enables features that stress the CPU's single-thread performance. Low settings are viable for competitive play, reaching 455 FPS at 1080p and 390 FPS at 1440p, but the visual downgrade is significant for a game where distant rendering is important. In summary, start with Medium and only drop to Low if you need absolute maximum frame rates for competitive multiplayer.

CPU Role

The Intel Core i5-9400 is a Coffee Lake processor with 6 cores and 6 threads, running at a base clock of 2.90 GHz and a boost clock of 4.10 GHz. It supports DDR4 memory in a dual-channel configuration with a bandwidth of 42.7 GB/s. In synthetic benchmarks, this CPU scores 6629 in Cinebench R23 multi-core and 935 in single-core, with a Geekbench multi-core score of 5141. Its average benchmark score of 2254 places it at the 47th percentile of all CPUs, making it a mid-range processor by today's standards. The nearest rivals are tightly clustered, with the Intel Core i7-10710U just 0.3% ahead, the AMD Ryzen 5 PRO 1500 0.4% ahead, and the Intel Core i3-10305 0.4% behind.

In Minecraft, the CPU's role is most evident in the frame rate collapse at Ultra settings. The jump from High to Ultra at 1080p costs 136 FPS (from 385 to 249), and at 4K it costs 49 FPS (from 131 to 82). This pattern indicates that Ultra settings likely enable view distance and entity rendering options that saturate the six threads. The 6-core/6-thread configuration lacks hyper-threading, which means the CPU cannot efficiently handle the parallel workloads that Ultra presets demand. The boost clock of 4.10 GHz helps in single-threaded tasks, which is why Low and Medium presets still achieve very high frame rates, but the lack of additional threads becomes a bottleneck at higher settings.

The measured results show that at 1080p Low, the CPU is still capable of pushing 455 FPS, which confirms its per-core strength. However, the 47th percentile ranking suggests that many other CPUs in the database outperform it in general workloads. For Minecraft specifically, the CPU's performance is adequate for 60-144 Hz gaming at Medium settings, but it will hold back the RTX 3080 Ti at Ultra. The 9 MB of shared L3 cache is sufficient for this game, but the 64 KB L1 and 256 KB L2 per core are modest by modern standards. If you are building this combo, expect the CPU to be the limiting factor only at the highest quality presets.

GPU Role

The NVIDIA GeForce RTX 3080 Ti is a high-end Ampere GPU with 10240 shading units, 320 TMUs, and 112 ROPs. It has a base clock of 1365 MHz and a boost clock of 1665 MHz, with memory running at 1188 MHz effective 19 Gbps. The 12 GB of GDDR6X memory is connected via a 384-bit bus, yielding a bandwidth of 912.4 GB/s. This GPU scores 26896 in Passmark G3D and 170037 in Geekbench OpenCL, with an average benchmark score of 41187, placing it at the 83rd percentile of all GPUs. Its nearest rivals include the AMD Radeon Pro 5300 (0.8% ahead) and the NVIDIA GeForce RTX 5070 (2% ahead), though the Tesla M40 24 GB is 1.2% behind.

The GPU's performance in Minecraft is exceptional, as evidenced by the frame rates at lower settings. At 1080p Low, the combo achieves 455 FPS, and at 1440p Low it reaches 390 FPS, both of which are far beyond any display's refresh rate. The GPU's 34.10 TFLOPS of FP32 compute is overkill for this game's rendering demands, which is why the GPU is not the bottleneck at 1080p or 1440p on Low/Medium settings. The transition from 1440p Medium (316 FPS) to 4K Medium (165 FPS) shows a 48% reduction, which is consistent with the GPU working harder at higher resolutions.

The RTX 3080 Ti's 912.4 GB/s memory bandwidth becomes relevant at 4K, where the 12 GB frame buffer is sufficient to handle high-resolution textures. The data shows that at 4K High, the combo still manages 131 FPS, which is impressive for a sandbox game. The GPU's 80 RT cores and 320 tensor cores are largely unused in Minecraft's standard rendering, but they do not hurt performance. The 83rd percentile ranking confirms that this GPU is a top-tier part, and in Minecraft it delivers frame rates that are limited only by the CPU's ability to feed it draw calls. The launch MSRP of this GPU was 1,199 USD, reflecting its high-end positioning.

How This Combo Ranks

The combo rank of 1203 out of 3710 tested combinations places this configuration in the 32nd percentile of all tested combos. This is a respectable ranking, but it underperforms what the GPU alone would suggest. The RTX 3080 Ti ranks at the 83rd percentile among GPUs, while the Core i5-9400 ranks at the 47th percentile among CPUs. The combination of a high-tier GPU with a mid-tier CPU results in a system that is better than average but not top-tier, because the CPU's limitations hinder the GPU's full potential in CPU-bound scenarios like Minecraft's Ultra settings.

Compared to other combos in the database, this pairing's rank is influenced heavily by the CPU's modest multi-threaded performance. The data shows that at 1080p Ultra, the combo drops to 249 FPS, which is likely lower than what a stronger CPU would achieve with the same GPU. The 3710 combos tested include many with more balanced pairings, which is why this rank is not higher. However, for a 1080p or 1440p gamer who prioritizes high refresh rates, this combo still delivers excellent results, ranking better than 68% of all tested configurations.

The rank also reflects the game's specific demands. Minecraft is not a typical AAA title; it relies heavily on single-core CPU performance for world generation and entity updates, but modern versions also utilize multiple cores for chunk rendering. The i5-9400's boost clock of 4.10 GHz helps, but its lack of hyper-threading puts it behind CPUs like the i7-10710U, which is only 0.3% ahead in average score but has 12 threads. The data suggests that to improve this combo's rank, a CPU with more threads or higher single-core performance would be needed, as the GPU has ample headroom.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals how the system's bottleneck shifts. At Low settings, the frame rate drops from 455 FPS at 1080p to 390 FPS at 1440p (a 14% reduction) and then to 209 FPS at 4K (a 46% reduction from 1440p). This pattern shows that at Low settings, the GPU becomes the primary limiter at 4K, while the CPU is still capable of higher frame rates at lower resolutions. The 455 FPS at 1080p Low is likely near the CPU's maximum draw call throughput, as the GPU could theoretically render faster but is waiting on the CPU.

At Medium settings, the scaling is more linear: 418 FPS at 1080p, 316 FPS at 1440p (24% drop), and 165 FPS at 4K (48% drop from 1440p). This indicates a more balanced load between CPU and GPU, with the GPU taking on more work as resolution increases. The measured minimum FPS also scales proportionally, from 356 at 1080p to 269 at 1440p to 141 at 4K, suggesting consistent frame pacing. At High settings, the drop from 1080p (385 FPS) to 1440p (251 FPS) is 35%, and from 1440p to 4K (131 FPS) is 48%, showing that the GPU is increasingly the bottleneck at higher resolutions.

At Ultra settings, the scaling is steeper and more erratic: 249 FPS at 1080p drops to 157 FPS at 1440p (37% drop) and then to 82 FPS at 4K (48% drop). The 1080p Ultra result of 249 FPS is disproportionately low compared to the 1080p High result of 385 FPS, indicating a CPU bottleneck at 1080p that is partially alleviated at 4K where the GPU takes over. The data suggests that for this combo, the sweet spot for the CPU is around 1440p Medium, where the GPU and CPU are more evenly matched. At 4K, the RTX 3080 Ti's power is fully utilized, but the CPU still limits Ultra settings to 82 FPS.

Measured FPS Breakdown

At 1920x1080, the combo delivers its highest frame rates. Low settings produce an average of 455 FPS. Medium settings yield 418 FPS average with a minimum of 356 and maximum of 481 FPS. High settings drop to 385 FPS average. Ultra settings produce 249 FPS average. The gap between High and Ultra is 136 FPS, which is the largest single-setting jump at this resolution, confirming that Ultra introduces CPU-intensive effects.

At 2560x1440, performance remains high but shows more variation. Low settings average 390 FPS. Medium settings average 316 FPS with a range of 269 to 364 FPS. High settings average 251 FPS. Ultra settings average 157 FPS. The drop from High to Ultra at 1440p is 94 FPS, still significant but less than at 1080p, suggesting the GPU is starting to share the load. The Medium preset's minimum of 269 FPS is still well above 144Hz refresh rates, making it ideal for high-refresh monitors.

At 3840x2160, the GPU is pushed harder and the CPU bottleneck recedes. Low settings average 209 FPS. Medium settings average 165 FPS with a minimum of 141 and maximum of 190 FPS. High settings average 131 FPS. Ultra settings average 82 FPS. The step from High to Ultra at 4K is 49 FPS, which is the smallest absolute drop across all resolutions, indicating that the GPU is now the primary limiter. The 4K Medium result of 165 FPS is exceptional for a sandbox game, and even the 4K High result of 131 FPS is suitable for 120Hz displays. The 4K Ultra result of 82 FPS is the only setting where the combo falls below 100 FPS, making it unsuitable for high-refresh 4K gaming without reducing settings.