Pc Building Simulator

Pc Building Simulator presents an interesting case study for the Intel Core i5-12400F paired with the AMD Radeon RX 580. The measured data shows a system that is heavily constrained by the graphics card at higher resolutions, yet capable of delivering very high frame rates at 1080p on lower settings. The benchmark results indicate a clear hierarchy where the GPU is the primary bottleneck, with the CPU's strong multi-threaded performance providing ample headroom for the simulation's logic.

Resolution Scaling

The performance drop from 1920x1080 to 3840x2160 is steep and consistent across all settings, pointing directly at the GPU as the limiting component. At Low settings, the average FPS falls from 119.4 at 1080p to 39.4 at 4K, a reduction of precisely 67%. This dramatic scaling is typical of a GPU-bound scenario where the RX 580's fill rate and memory bandwidth are overwhelmed by the four-fold increase in pixel count. The pattern holds at Medium settings, where the frame rate drops from 88 at 1080p to 30.7 at 4K, and at High settings, dropping from 59.1 to 18.2.

The data suggests that moving from 2560x1440 to 3840x2160 yields a more punishing performance hit than the jump from 1080p to 1440p. For instance, at Ultra settings, the average FPS goes from 36.4 at 1440p to 19.4 at 4K, a loss of 17 FPS, while the transition from 1080p (56.6) to 1440p (36.4) loses 20.2 FPS. This indicates that the RX 580's 256-bit memory bus and 256.0 GB/s bandwidth are simply insufficient for the 4K resolution, making 1080p the only viable target for smooth gameplay. The scaling behavior reveals a component that is approaching its architectural limits, as the Polaris 20 chip's pixel rate of 42.88 GPixel/s is being taxed heavily.

GPU Role

The AMD Radeon RX 580's role in this game is defined by its 8 GB of GDDR5 memory and its clock speeds. The base clock of 1257 MHz and boost clock of 1340 MHz provide the processing power, but the data shows that the memory subsystem is the critical factor. The 8 GB capacity is sufficient for the game's assets at 1080p, but the effective memory speed of 8 Gbps and the 256.0 GB/s bandwidth struggle as resolution increases. The measured FPS at 4K Ultra is 19.4, which is almost unplayable, while 4K Low yields 39.4, indicating that even reducing the graphical load cannot overcome the memory bandwidth wall.

The GPU's benchmarks place it at the 53rd percentile of all GPUs, with an average benchmark score of 13559. Its nearest rivals are the NVIDIA GeForce GTX 570, which has a deltaPct of 0, and the NVIDIA GeForce GTX 950 with a deltaPct of 0.1. This means the RX 580 is essentially tied with the GTX 570 in raw compute power, yet it is a much newer architecture. The data implies that for a game like Pc Building Simulator, which is not graphically intense, the GPU's shading units (2304) and texture mapping units (144) are less important than the memory bandwidth, which is why the frame rates drop so sharply at higher resolutions.

How This Combo Ranks

In the grand scheme of tested hardware combinations, this pairing of the i5-12400F and the RX 580 ranks at position 1640 out of 1769 combos for this game. This places it in the bottom 7% of all tested systems, which might seem surprising given the CPU's strong benchmarks. However, the combo rank in game is heavily weighted by the GPU's performance, and the data shows that the RX 580 is the weak link. The CPU's percentile vs all CPUs is 77, indicating it is in the top quartile, but the GPU's percentile of 53 drags the overall combo down.

The gap between the CPU's capability and the GPU's delivery is stark. The i5-12400F has an average benchmark score of 19221, with nearest rivals like the Intel Core i7-8700K (deltaPct 0.1) and the AMD Ryzen 5 7533HS (deltaPct -0.7). This suggests the CPU is more than capable of feeding the GPU, but the RX 580's performance ceiling is the limiting factor. The rank of 1640 implies that most other combinations tested either have a more balanced GPU or a more powerful one, resulting in higher average FPS across the board.

Measured FPS Breakdown

At 1920x1080, the system shows its best performance. With Low settings, the average FPS is 119.4, which is exceptionally smooth for a simulation game. Medium settings yield 88 FPS, High settings give 59.1 FPS, and Ultra settings produce 56.6 FPS. The drop from Medium to High is notable (88 to 59.1), suggesting that High settings introduce a significant graphical load that the GPU struggles to maintain above 60 FPS. The difference between High and Ultra is smaller (59.1 to 56.6), indicating that the game's Ultra preset may not be much more demanding than High, or that the CPU is starting to play a role.

Moving to 2560x1440, the frame rates become less comfortable. Low settings average 78.1 FPS, which is still playable, but Medium drops to 53.4 FPS. High settings yield 35.5 FPS, and Ultra is 36.4 FPS. Interestingly, Ultra is slightly higher than High at this resolution, which is an anomaly that could be due to specific in-game effects or measurement variance. At 4K, the system is clearly overwhelmed. Low settings average 39.4 FPS, Medium drops to 30.7 FPS, High is 18.2 FPS, and Ultra is 19.4 FPS. The data shows that for 4K gaming, only Low settings approach playability, but even that is below the 60 FPS threshold.

FAQ

Q: What is the best resolution for this CPU/GPU combo to achieve 60 FPS?

A: The measured data shows that at 1920x1080 with Medium settings, the average FPS is 88, and with Low settings it is 119.4. At 2560x1440, even Low settings only average 78.1 FPS, so 1080p is the only resolution where 60 FPS is reliably achieved.

Q: How does the RX 580 compare to its nearest rival, the GTX 570?

A: The RX 580 has an average benchmark score of 13559, while the GTX 570 has an average score of 13564, resulting in a deltaPct of 0. This means they perform nearly identically in synthetic benchmarks, though the RX 580 has a 53rd percentile ranking vs all GPUs.

Q: Is the Intel Core i5-12400F holding back the RX 580?

A: No, the data suggests the CPU is not the bottleneck. The i5-12400F's average benchmark score is 19221, placing it in the 77th percentile of all CPUs. Its multi-threaded performance, as shown by a 3dmark_max_threads score of 5912, leaves plenty of headroom for the GPU to be the limiting factor.

Q: What is the performance difference between Ultra and Low settings at 1080p?

A: At 1920x1080, the average FPS at Ultra settings is 56.6, while at Low settings it is 119.4. This represents a difference of 62.8 FPS, meaning Low settings are roughly 110% faster than Ultra in this game.

Q: Why does the 4K Ultra FPS (19.4) differ from the 4K High FPS (18.2)?

A: The measured data shows that at 3840x2160, Ultra settings yield 19.4 FPS while High yields 18.2 FPS. This is an unusual result, as Ultra is typically more demanding, but the difference is within a margin that could be due to specific in-game scene variations or driver behavior.

Q: Does the GPU's 8 GB memory capacity affect performance at 4K?

A: The data shows that at 4K, even Low settings only achieve 39.4 FPS. While 8 GB of GDDR5 is present, the memory bandwidth of 256.0 GB/s is likely the limiting factor, as the frame rates are consistently low across all settings, indicating a bandwidth bottleneck rather than a capacity issue.

CPU Role

The Intel Core i5-12400F is a 6-core, 12-thread processor based on the Alder Lake architecture, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. Its benchmark scores suggest it is a very capable gaming CPU, with a Cinebench R23 multicore score of 16518 and a single-core score of 2332. The single-thread performance is crucial for simulation games, which often rely on a single primary thread for game logic. The 3dmark_single_thread score of 909 and the PassMark single-thread score of 3481 indicate that the CPU can handle the game's logic without becoming a bottleneck.

The data shows that the CPU's role in this combo is to provide a stable foundation, as the FPS drops are almost entirely attributable to the GPU. For example, at 1080p, the difference between Low and Ultra settings is 62.8 FPS, but the CPU's performance remains constant. This suggests that the i5-12400F is not being taxed by the game, as its 65W TDP and 10nm process node allow for efficient operation. The CPU's nearest rival, the Intel Core i7-8700K, has a deltaPct of 0.1, meaning the i5-12400F is essentially equal in performance, yet it is a much more modern part with a 77th percentile ranking.

Settings Recommendations

The measured FPS data provides clear guidance for the best experience with this hardware. At 1920x1080, the Medium preset offers the best balance, with an average FPS of 88. This is well above the 60 FPS threshold and provides a smooth experience without the graphical sacrifices of Low settings. The High preset at 59.1 FPS is borderline, and Ultra at 56.6 FPS is slightly below the ideal target. Therefore, Medium is the recommended preset for 1080p, as it delivers a high frame rate while maintaining acceptable visual quality.

For users with a 2560x1440 monitor, the data suggests that Low settings are the only viable option, yielding 78.1 FPS. The Medium preset at 53.4 FPS is playable but not ideal, and High/Ultra are too demanding. At 4K, the system is not recommended for gaming, as even Low settings only achieve 39.4 FPS. The data implies that this combo is best suited for 1080p gaming, where the Medium preset provides the most enjoyable experience with an average of 88 FPS.