Pc Building Simulator

Pc Building Simulator with an AMD Ryzen 5 5600X and NVIDIA GeForce RTX 4090 produces an unusual performance profile: the CPU is a 6-core/12-thread Zen 3 part sitting at the 78th percentile of all CPUs, while the GPU is a 24 GB Ada Lovelace flagship at the 91st percentile of all GPUs. This pairing is heavily lopsided toward the graphics card, and the measured frames per second reflect that imbalance. At 1080p the CPU becomes the limiting factor, while at 4K the GPU still has enough headroom to deliver very playable frame rates. The data shows a system that can run the game at maximum settings at all tested resolutions, but the performance scaling between presets reveals where the bottleneck shifts.

Settings Recommendations

The measured FPS rows show that the Ultra preset is not meaningfully more demanding than High at any resolution. At 3840x2160, both High and Ultra produce an average of 84.7 FPS — identical scores. At 2560x1440, High delivers 163.6 FPS and Ultra delivers 157.7 FPS, a gap of only 5.9 FPS. At 1920x1080, High hits 257.6 FPS and Ultra hits 249.2 FPS, an 8.4 FPS difference. Given that Ultra costs almost nothing in performance, it is the clear choice for the best visual experience. The data does not indicate any reason to drop to High, since the frame rate penalty is under 4% at 1440p and 1080p, and zero at 4K.

Medium is a different story. At 4K, Medium produces 123.9 FPS, which is 39.2 FPS higher than Ultra. At 1440p, Medium hits 233.7 FPS versus 157.7 FPS for Ultra, a 76 FPS advantage. At 1080p, Medium reaches 300.4 FPS compared to 249.2 FPS for Ultra. The Low preset is the fastest, with 172.1 FPS at 4K, 290.1 FPS at 1440p, and 339.7 FPS at 1080p. For a simulation game where visual fidelity matters more than competitive frame rates, the Ultra preset is recommended because the 84.7 FPS floor at 4K is already well above the threshold for smooth gameplay. However, if you want to max out a high-refresh-rate 1440p monitor, Medium is the sweet spot — it delivers 233.7 FPS, which is 76 FPS more than Ultra, with presumably reduced but still acceptable visuals.

GPU Role

The RTX 4090 is a 24 GB GDDR6X card with a 384-bit memory bus and 1.01 TB/s bandwidth. Its base clock is 2235 MHz and boost clock is 2520 MHz. The benchmark results show a passmark G3D score of 38194 and a 3DMark Steel Nomad DX12 score of 9223, with a percentile rank of 91 versus all GPUs. The data indicates that this GPU is massively overprovisioned for Pc Building Simulator. At 4K Ultra, the game only produces 84.7 FPS, which is not a GPU limitation — it is likely a CPU or engine constraint, as the GPU is capable of far higher throughput. The 24 GB VRAM is far more than this game needs, and the 1.01 TB/s bandwidth is never a bottleneck at these frame rates.

Interestingly, the nearest rivals to the RTX 4090 in the GPU benchmark database are professional cards: the NVIDIA Tesla T4 (deltaPct -0.4), Tesla P40 (deltaPct 0.5), AMD Radeon Pro Vega 56 (deltaPct -0.9), and Quadro P6000 (deltaPct -1.3). These are not gaming cards, which suggests the RTX 4090's raw compute scores are being compared against workstation parts. For this game, the GPU's role is to provide headroom that the CPU cannot fully utilize. The data shows that dropping from Ultra to Low at 4K increases FPS from 84.7 to 172.1, a 103% improvement, which indicates that the game's rendering load is still GPU-dependent even at high settings.

Resolution Scaling

The FPS drop from 1080p to 4K is substantial but not uniform across settings. At Low, 1080p yields 339.7 FPS and 4K yields 172.1 FPS — a 49.3% reduction. At Medium, 1080p gives 300.4 FPS and 4K gives 123.9 FPS — a 58.8% reduction. At High, 1080p gives 257.6 FPS and 4K gives 84.7 FPS — a 67.1% reduction. At Ultra, 1080p gives 249.2 FPS and 4K gives 84.7 FPS — a 66.0% reduction. This scaling pattern reveals that at Low and Medium settings, the CPU becomes the limiting factor at 1080p, preventing the FPS from scaling linearly with resolution. At High and Ultra, the GPU load increases enough that the 4K frame rate settles at 84.7 FPS, which is likely a CPU or engine cap rather than a GPU cap.

The delta between 1080p and 1440p is smaller. At Low, 1080p is 339.7 FPS and 1440p is 290.1 FPS, a 14.6% drop. At Medium, 1080p is 300.4 FPS and 1440p is 233.7 FPS, a 22.2% drop. At High, 1080p is 257.6 FPS and 1440p is 163.6 FPS, a 36.5% drop. At Ultra, 1080p is 249.2 FPS and 1440p is 157.7 FPS, a 36.7% drop. The data shows that the limiting component shifts from CPU at 1080p Low to GPU at 4K Ultra. At 4K, the 84.7 FPS cap appears across both High and Ultra, suggesting a hard performance ceiling that the RTX 4090 cannot exceed in this game, likely due to the CPU's single-threaded performance.

Measured FPS Breakdown

At 1920x1080, the average FPS by preset is: Low 339.7, Medium 300.4, High 257.6, Ultra 249.2. The gap between Low and Ultra is 90.5 FPS, with Ultra being 26.7% slower than Low. The step from High to Ultra is only 8.4 FPS, indicating that the Ultra preset adds minimal rendering cost over High at this resolution.

At 2560x1440, the averages are: Low 290.1, Medium 233.7, High 163.6, Ultra 157.7. The drop from Low to Medium is 56.4 FPS, and the drop from Medium to High is 70.1 FPS, which is the largest single-step penalty across any resolution. Ultra is only 5.9 FPS behind High.

At 3840x2160, the averages are: Low 172.1, Medium 123.9, High 84.7, Ultra 84.7. The step from Medium to High costs 39.2 FPS, which is a 31.6% reduction. High and Ultra are identical at 84.7 FPS, confirming that the game hits a performance ceiling at 4K with the higher presets. The RTX 4090 is clearly not the limiting factor here, as the difference between Low and High is 87.4 FPS, but the ceiling at 84.7 FPS suggests a CPU bottleneck at this resolution with demanding settings.

FAQ

Q: Is the RTX 4090 overkill for Pc Building Simulator at 1080p?

A: Yes. At 1080p Low, the system produces 339.7 FPS, and at Ultra it produces 249.2 FPS. These frame rates are far beyond what any 1080p monitor can display, and the CPU is the limiting factor at this resolution.

Q: What is the maximum playable frame rate at 4K with this combo?

A: The measured data shows a maximum of 172.1 FPS at 4K Low, but the highest quality preset (Ultra) yields 84.7 FPS. The 84.7 FPS cap appears on both High and Ultra, indicating a performance ceiling.

Q: How much performance is lost when going from 1440p to 4K at Ultra?

A: At 1440p Ultra the average is 157.7 FPS, and at 4K Ultra it is 84.7 FPS. This represents a 46.3% reduction in frame rate.

Q: Does the Ultra preset offer any benefit over High?

A: At 4K, High and Ultra produce identical results at 84.7 FPS. At 1440p, Ultra is 5.9 FPS slower than High. At 1080p, Ultra is 8.4 FPS slower. The visual quality difference is not quantified, but the performance cost is minimal.

Q: Is the Ryzen 5 5600X bottlenecking the RTX 4090?

A: The data suggests yes at lower resolutions. At 1080p, the FPS ranges from 249.2 to 339.7, which is far below what the RTX 4090 could theoretically produce. At 4K, the 84.7 FPS cap on High/Ultra further indicates a CPU limitation.

Q: What is the best resolution for a 144Hz monitor?

A: At 1440p, the Medium preset delivers 233.7 FPS and High delivers 163.6 FPS, both above 144 FPS. At 4K, only the Low preset at 172.1 FPS exceeds 144 FPS, while Medium at 123.9 FPS does not.

CPU Role

The AMD Ryzen 5 5600X has 6 cores and 12 threads with a base clock of 3.70 GHz and boost clock of 4.60 GHz. It sits at the 78th percentile of all CPUs, with an average benchmark score of 20680. Its nearest rivals in the database are the AMD Ryzen 5 5600GT (deltaPct -0.3), Intel Core i7-10700 (deltaPct -0.3), Intel Core i5-12490F (deltaPct -0.5), and Intel Xeon 6325P (deltaPct 0.7). The CPU's single-thread score in Cinebench R23 is 2622, and its multi-core score is 18578. For a simulation game, single-thread performance is often critical, and the 2622 R23 single-core score is strong, but not enough to fully feed the RTX 4090.

The benchmark data shows that the CPU is the limiting factor in this game. At 4K, the FPS does not exceed 172.1 even at Low settings, and at High/Ultra it is capped at 84.7 FPS. This cap is suspiciously consistent across two different presets, which indicates a CPU bottleneck rather than a GPU limitation. The 3DMark scores for the CPU show a single-thread score of 917 and a 2-thread score of 1793, implying that scaling from 2 to 4 threads improves performance by 87.7% (from 1793 to 3363), but scaling from 4 to 6 threads is less efficient. This suggests the game may be limited by single-thread performance, as the 5600X's 4.60 GHz boost clock is high but not extreme for a 2020-era part.

The CPU's 32 MB L3 cache and 51.2 GB/s memory bandwidth are adequate for this game, but the 74 mm² die size and 4,150 million transistors indicate a small, efficient chip. The data does not show any thermal throttling issues, as the 65W TDP is modest. However, the fact that the 4K Ultra FPS is identical to 4K High (84.7 FPS) strongly suggests that the game engine is not able to utilize the RTX 4090's full potential with this CPU. If you were to pair this GPU with a higher single-threaded CPU, the 4K frame rate might improve, but that is outside the scope of this measured data. The 5600X is a capable CPU, but in this specific pairing, it is the weaker link for Pc Building Simulator at higher settings.