Pc Building Simulator

Pc Building Simulator with the Intel Core i5-13400F and AMD Radeon RX 580 presents a classic bottleneck scenario: the CPU is vastly overqualified for the GPU’s workload, making the RX 580 the definitive limiting factor at every resolution. The measured data shows a combo that is playable at 1080p on lower presets but falls apart quickly as resolution and settings increase, ranking near the bottom of all tested configurations. This pairing is not about raw headroom; it is about understanding where the GPU’s aging Polaris architecture can still deliver a smooth experience.

Resolution Scaling

The frame rate drop from 1080p to 4K is steep and consistent, confirming that the RX 580 is the primary constraint. At Low settings, the average FPS falls from 121.3 at 1920x1080 to 79.1 at 2560x1440, a 34.8% reduction, and then plummets to 38.3 at 3840x2160, which is just 31.6% of the 1080p score. This pattern is typical of a GPU that is running out of pixel throughput rather than CPU instruction capacity.

The scaling becomes even more pronounced on higher presets. At High settings, the 1080p average of 58.8 FPS drops to 38.7 at 1440p (a 34.2% loss) and then to 17.7 at 4K, a catastrophic 69.9% decline from the starting point. The difference between 1440p and 4K at High settings is 21.0 FPS, while the difference between 1080p and 1440p is only 20.1 FPS, showing that the GPU’s memory bandwidth and shading units are being saturated more aggressively as pixel count rises.

The data indicates that the i5-13400F is never the bottleneck here. The CPU has 10 cores and 16 threads with a boost clock of 4.60 GHz, which is more than sufficient for a simulation title. The 4K Ultra result of 17.6 FPS versus the 4K High result of 17.7 FPS is nearly identical, suggesting the game is hitting a hard GPU limit where settings changes no longer matter. The limiting component is unambiguously the Radeon RX 580, with its 8 GB of GDDR5 memory and 256.0 GB/s bandwidth struggling to feed the framebuffer at higher resolutions.

Settings Recommendations

The best experience per the measured rows is at 1920x1080 with Low settings, which delivers 121.3 FPS average. This is the only configuration that exceeds 120 FPS, providing a smooth, high-refresh-rate experience that the CPU can easily maintain. However, the jump from Low to Medium at 1080p costs 35.0 FPS (from 121.3 to 86.3), which is a significant drop but still leaves the game comfortably above 60 FPS. For users prioritizing visual fidelity over raw speed, Medium at 1080p is the sweet spot, as it retains playability while improving texture quality.

At 2560x1440, the only viable option is Low, which produces 79.1 FPS. Medium at this resolution falls to 56.4 FPS, which is playable but not ideal for fast-paced simulation menus, and High and Ultra both sit at 38.7 FPS, which is borderline. At 3840x2160, no preset is truly playable; even Low only reaches 38.3 FPS, and Ultra drops to 17.6 FPS. The data strongly suggests that users should stay at 1080p for this combo, with Medium being the highest acceptable preset before frame rates become inconsistent.

Higher presets at 1440p and 4K are not recommended based on the measured averages. The Ultra preset at 1080p, for example, delivers 54.9 FPS, which is below the 60 FPS threshold that most users consider fluid. The performance ceiling for this pairing is clearly 1080p Medium, where the game still looks respectable and the frame pacing remains stable.

GPU Role

The AMD Radeon RX 580 is the dominant factor in this combo’s performance, and its specifications explain the measured results. The GPU has a base clock of 1257 MHz and a boost clock of 1340 MHz, which are modest by modern standards, and its 2304 shading units are tasked with rendering all frames. The 8 GB of GDDR5 memory on a 256-bit bus provides 256.0 GB/s of bandwidth, which is sufficient for 1080p but becomes a severe limitation at higher resolutions where memory pressure increases.

The GPU’s benchmark scores reflect its mid-range status. Its Passmark G3D score of 8813 places it in the 53rd percentile of all GPUs, with direct rivals including the NVIDIA GeForce GTX 950 (score 13549, deltaPct 0.1) and the AMD Radeon Pro 455 (score 13416, deltaPct 1.1). The RX 580 is effectively tied with these cards in average score (13559 vs 13564 for the GTX 570), indicating that it is a decade-old design that has been surpassed by newer architectures. The 3DMark Steel Nomad DX12 score of 1005 is low, and the DirectX 12 Passmark score of 43 is particularly weak, suggesting that the GPU struggles with modern API workloads.

The memory clock of 2000 MHz (8 Gbps effective) is fixed, and there is no evidence in the data that overclocking would help, as the bottleneck is not clock speed but raw throughput. The GPU’s TDP of 185 W and suggested PSU of 450 W are not directly relevant to frame rates, but they indicate that this is a power-hungry part for its performance level. The 14 nm process node from GlobalFoundries means the chip runs hot and inefficiently compared to newer GPUs, but the measured FPS data is what matters: the RX 580 simply cannot keep up with the CPU’s capabilities.

How This Combo Ranks

This combo ranks 1632 out of 1769 tested configurations in Pc Building Simulator, placing it in the bottom 7.7% of all systems. This is a poor result, indicating that the pairing is heavily imbalanced. The rank is not surprising given the GPU’s age; the RX 580 was released in 2017 and is now end-of-life, while the i5-13400F is a 2023 product that ranks in the 82nd percentile of all CPUs.

The CPU’s nearest rivals include the Intel Core i7-13620H (avgScore 25201, deltaPct 0.1) and the AMD Ryzen 5 5600X3D (avgScore 25365, deltaPct -0.5), showing that the i5-13400F is competitive with much newer mobile and desktop parts. In contrast, the GPU’s nearest rivals are ancient cards like the GTX 570 and GTX 950, which are from 2010 and 2015 respectively. The deltaPct values for the GPU are negligible (0 to 1.1%), meaning the RX 580 is statistically identical in performance to these decade-old products.

The combination of a top-tier CPU with a bottom-tier GPU results in a system that is bottlenecked at every turn. The combo rank of 1632 reflects this imbalance, as most other tested configurations likely pair more evenly matched components. For a simulation game that is not graphically intensive, the CPU could handle much higher frame rates, but the GPU prevents this from happening.

FAQ

Q: Is this combo capable of 60 FPS at 1080p?

A: Yes, but only on Low or Medium settings. At 1080p Low, the average FPS is 121.3, and at Medium it is 86.3. High settings drop to 58.8 FPS, which is just below 60, and Ultra falls to 54.9 FPS.

Q: What is the best resolution for this pairing?

A: 1920x1080 is the only resolution where the combo achieves playable frame rates across multiple presets. At 2560x1440, only Low settings reach 79.1 FPS, while at 3840x2160, even Low only hits 38.3 FPS.

Q: How does the RX 580 compare to its nearest rivals in benchmark scores?

A: The RX 580 has an average benchmark score of 13559, which is essentially tied with the NVIDIA GeForce GTX 570 (13564, deltaPct 0) and the NVIDIA GeForce GTX 950 (13549, deltaPct 0.1). It is 1.1% ahead of the AMD Radeon Pro 455 (13416).

Q: Is the i5-13400F the bottleneck in this system?

A: No. The CPU has 10 cores, 16 threads, and a boost clock of 4.60 GHz, ranking in the 82nd percentile of all CPUs. The measured FPS drops are consistent with GPU limitations, not CPU constraints.

Q: What is the frame rate difference between 1080p and 4K at Low settings?

A: The average FPS drops from 121.3 at 1080p to 38.3 at 4K, a 68.4% reduction. This indicates the GPU cannot handle the pixel count increase.

Q: Can this combo run Ultra settings at any resolution?

A: At 1080p Ultra, the average FPS is 54.9, which is below 60. At 1440p Ultra, it drops to 38.7 FPS, and at 4K Ultra, it falls to 17.6 FPS. Ultra is not recommended for smooth gameplay.

Measured FPS Breakdown

At 1920x1080, the measured average frame rates are: Low 121.3 FPS, Medium 86.3 FPS, High 58.8 FPS, and Ultra 54.9 FPS. The drop from Low to Medium is 35.0 FPS, while the drop from High to Ultra is only 3.9 FPS, showing diminishing returns at the highest preset.

At 2560x1440, the scores are: Low 79.1 FPS, Medium 56.4 FPS, High 38.7 FPS, and Ultra 38.7 FPS. The High and Ultra presets produce identical averages, suggesting a hard limit on the GPU’s ability to render at this resolution.

At 3840x2160, the results are: Low 38.3 FPS, Medium 29.9 FPS, High 17.7 FPS, and Ultra 17.6 FPS. The gap between Medium and High is 12.2 FPS, while High and Ultra are effectively the same, indicating that the GPU is completely saturated at 4K.

CPU Role

The Intel Core i5-13400F is a Raptor Lake-S part with 10 cores (likely 6 performance and 4 efficiency cores based on the core count) and 16 threads, with a base clock of 2.50 GHz and a boost clock of 4.60 GHz. Its benchmark scores are strong: Cinebench R23 multicore is 21279, single-core is 3004, and Passmark multithread is 25032. The CPU’s percentile rank of 82 places it well above average, and its nearest rival is the Intel Core i7-13620H with a deltaPct of 0.1.

In Pc Building Simulator, the CPU’s role is to handle game logic, simulation calculations, and asset loading. The data shows that the CPU is never the limiting factor, as frame rates scale almost entirely with GPU settings and resolution. The CPU’s 20 MB of shared L3 cache and 1.25 MB per-core L2 cache provide ample bandwidth for the game’s data, and its 16 threads ensure that even complex simulation states do not cause stutters.

The CPU’s launch MSRP is $196, but that is irrelevant to performance. The key takeaway is that the i5-13400F is overkill for the RX 580, and users would see identical frame rates with a much weaker CPU. The measured FPS data confirms that the GPU is the bottleneck, as the CPU’s high scores do not translate into higher frame rates at any resolution or setting. This is a case where hardware balance matters more than raw component power.