Minecraft

The Intel Core i5-9400 is a 6-core, 6-thread desktop processor based on the Coffee Lake architecture, with a base clock of 2.90 GHz and a boost clock of 4.10 GHz. This places it in the 47th percentile of all CPUs tested, and its average benchmark score of 2254 sits nearly exactly between its nearest rivals, the Intel Core i7-1068NG7 and the Intel Core i3-10305, which have deltaPct values of -0.2% and -0.4% respectively. For a game like Minecraft, which is heavily single-thread bound in its core rendering loop, the 4.10 GHz boost clock is arguably the most important specification here, but the six physical cores ensure that background tasks, world generation, and entity updates do not starve the main thread. The 9 MB of shared L3 cache is also a relevant factor, as Minecraft's block-based world data benefits from having a larger cache to reduce memory latency when rapidly loading chunks and textures. The 65W TDP and 14nm process node are secondary concerns, but they indicate this is a mainstream part that pairs naturally with mid-range to upper-mid-range graphics cards without bottlenecking their output in most titles.

Benchmark results confirm that this CPU is not a performance outlier in either direction. Its Cinebench R23 multi-core score of 6629 and single-core score of 935 are indicative of a part that is several generations old but still capable of feeding a modern GPU in a game like Minecraft, where the CPU's job is to process the game logic and physics ticks rather than push massive polygon counts. The Geekbench multi-core score of 5141 and single-core score of 1389 further reinforce that this is a balanced, modest processor. In the context of this specific game, the CPU's role is to maintain a stable frame pacing, and the measured data suggests it does so adequately, as even at 4K Ultra settings the frame rate never collapses to a stutter fest, which would be the expected symptom of a CPU bottleneck. The CPU's nearest rivals are all within a fraction of a percent of its average score, meaning that swapping in an i7-1068NG7 or a Ryzen 5 PRO 1500 would yield no meaningful difference in CPU-bound scenarios.

GPU Role

The AMD Radeon RX 7800 XT is a RDNA 3.0 architecture GPU with 16 GB of GDDR6 memory on a 256-bit bus, providing a memory bandwidth of 624.1 GB/s. This is a critical specification for Minecraft, particularly when using high-resolution texture packs or mods that expand the render distance, as the GPU must rapidly stream texture data from VRAM. The card's 3840 shading units, 240 texture mapping units, and 96 raster operation units give it substantial raw compute power, and its boost clock of 2430 MHz ensures that this power is delivered consistently. The GPU's 51st percentile ranking among all GPUs, with an average benchmark score of 11627, places it in a competitive position; its nearest rival, the NVIDIA GeForce GTX 1660, is only 0.5% faster on average, though the RX 7800 XT's 16 GB of VRAM versus the GTX 1660's smaller pool is a generational advantage that shows up in texture-heavy scenarios.

The GPU's 37.32 TFLOPS of FP32 performance and 583.2 GTexel/s texture rate mean that it is never the limiting factor at lower resolutions in this game. Benchmark results show a Passmark G3D score of 24176 and a 3DMark Steel Nomad DX12 score of 4157, which are strong numbers that align with a card designed for high-refresh-rate 1440p gaming and capable 4K performance. The 16 GB VRAM buffer is particularly relevant for Minecraft with shader mods, as these can consume several gigabytes of VRAM for shadow maps and post-processing effects. The GPU's game clock of 2124 MHz is the sustained frequency expected under load, and with a TDP of 263W, it requires a robust power supply, but the performance data indicates that this card provides a significant headroom above the CPU's capabilities in this title. The data shows that at 1080p, the GPU is barely working, while at 4K, it is still comfortably above playable frame rates, suggesting that the CPU is the primary constraint at lower resolutions and the GPU only becomes fully engaged at 4K Ultra.

Settings Recommendations

The measured FPS data provides clear guidance on which settings preset delivers the best experience. At 1920x1080, the Low preset yields an average of 455 FPS, which is far beyond any display's refresh rate, making it a waste of potential. The Medium preset at 1080p averages 418 FPS with a minimum of 356 FPS and a maximum of 481 FPS, which is still excessively high for most monitors. The High preset at 1080p averages 362 FPS, and even the Ultra preset at 1080p averages 226 FPS, which is still above the 144Hz threshold that most high-refresh-rate monitors support. Given that the frame rates are so high at 1080p, the recommendation is to use the Ultra preset, as the 226 FPS average is more than sufficient for competitive play and the visual quality improvements are substantial.

Moving to 2560x1440, the data shows that the Ultra preset averages 143 FPS, which is right at the threshold for a 144Hz monitor. The High preset at 1440p averages 228 FPS, providing a comfortable margin above 144Hz, but the visual difference between High and Ultra in Minecraft is often subtle, mostly affecting draw distance and shadow quality. The Medium preset at 1440p averages 288 FPS, which is overkill for most displays. The best experience at 1440p is the High preset, as it balances the 228 FPS average with the minimum FPS data not being provided, but the average is high enough to ensure smooth gameplay. At 4K (3840x2160), the High preset averages 119 FPS, which is just below the 120Hz threshold, while the Medium preset averages 150 FPS with a minimum of 128 FPS, and the Ultra preset drops to 75 FPS. For 4K, the High preset is the optimal choice, as it provides a near-120 FPS experience, while Ultra at 75 FPS is still playable but represents a significant compromise in smoothness.

How This Combo Ranks

This specific combination of the Intel Core i5-9400 and AMD Radeon RX 7800 XT ranks 1335th out of 3710 tested combos in Minecraft, placing it in the 64th percentile of all tested systems. This rank reflects that while the GPU is a strong performer, the CPU is a modest part that limits the overall potential of the system in a game that is not particularly GPU-intensive. The combo's rank is influenced by the fact that many other tested combos feature newer, higher-core-count CPUs that can push higher frame rates at lower resolutions, even if the GPU is weaker. The data indicates that the GPU is capable of delivering over 450 FPS at 1080p Low, but the CPU cannot always maintain that frame rate in all scenarios, which is why the combo does not rank higher.

Comparatively, the CPU's average benchmark score is only 0.3% higher than the Intel Core i7-10710U and 0.4% higher than the AMD Ryzen 5 PRO 1500, meaning that swapping the CPU for any of these near-identical parts would not change the combo's ranking meaningfully. The GPU's nearest rival, the NVIDIA GeForce GTX 1660, has an average score only 0.5% higher, but the RX 7800 XT's 16 GB of VRAM gives it a distinct advantage in memory-intensive scenarios. The rank of 1335 out of 3710 suggests that this combo is solidly mid-pack, which is a reasonable expectation for a pairing of a 2018 CPU with a 2023 GPU. The bottleneck is clearly the CPU, as evidenced by the fact that the frame rates scale more dramatically with resolution changes than with settings changes, indicating that the GPU has significant headroom.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals the limiting component in this system. At High settings, the average frame rate drops from 362 FPS at 1920x1080 to 228 FPS at 2560x1440, and then to 119 FPS at 3840x2160. This represents a 37% drop from 1080p to 1440p, and a 67% drop from 1080p to 4K. This scaling pattern is characteristic of a GPU-bound scenario, as the CPU's frame rate ceiling is far above what the GPU can deliver at higher resolutions. At 1080p High, the 362 FPS average suggests that the CPU is still able to feed the GPU adequately, but the GPU is not being fully utilized because the resolution is too low to tax it.

The Low settings data tells a different story. At 1080p Low, the average is 455 FPS, which drops to 363 FPS at 1440p and 190 FPS at 4K. The drop from 1080p to 1440p is only 20%, which is less than the 37% drop seen at High settings, indicating that at Low settings, the CPU is becoming the limiting factor at 1080p. The fact that Low settings at 1080p only reaches 455 FPS, rather than a higher number, suggests that the CPU is hitting its maximum frame generation capability around this point. At Medium settings, the 1080p average of 418 FPS drops to 288 FPS at 1440p and 150 FPS at 4K, with the minimum FPS at 4K being 128 FPS. This scaling confirms that the system is generally GPU-limited above 1080p, but CPU-limited at 1080p Low, where the GPU has nothing to do. The conclusion is that the RX 7800 XT has enough power to drive 4K High at near-120 FPS, but the i5-9400 cannot push much beyond 450 FPS in any scenario.

Measured FPS Breakdown

At 1920x1080, the measured frame rates are consistently high across all settings. The Low preset averages 455 FPS, which is the highest recorded frame rate for this combo in any configuration. The Medium preset averages 418 FPS, with a minimum of 356 FPS and a maximum of 481 FPS, showing a tight frame time distribution. The High preset averages 362 FPS, and the Ultra preset averages 226 FPS. These numbers indicate that at 1080p, the user has complete freedom to choose any settings preset without worrying about performance, as even the most demanding Ultra preset maintains a frame rate well above 200 FPS.

At 2560x1440, the Low preset averages 363 FPS, which is a 20% reduction from 1080p Low, suggesting the GPU is starting to take on more work. The Medium preset averages 288 FPS, with a minimum of 244 FPS and a maximum of 331 FPS, which is still well above any high-refresh-rate display. The High preset averages 228 FPS, and the Ultra preset averages 143 FPS, which is just above the 144Hz threshold. At 3840x2160, the Low preset averages 190 FPS, which is a 58% drop from 1080p Low, clearly demonstrating the GPU load increasing. The Medium preset at 4K averages 150 FPS, with a minimum of 128 FPS and a maximum of 173 FPS, providing a smooth experience. The High preset at 4K averages 119 FPS, which is right at the 120Hz boundary, and the Ultra preset at 4K averages 75 FPS, which is the lowest recorded average in the entire dataset. The minimum FPS data is only provided for the Medium preset at each resolution, showing that the frame pacing is most stable at this setting, with the 4K Medium minimum of 128 FPS being particularly strong.