Pc Building Simulator

# Pc Building Simulator — Intel Core i5-12400 + NVIDIA GeForce RTX 5090 D

This combination of the 6-core Intel Core i5-12400 and the flagship 32 GB NVIDIA GeForce RTX 5090 D produces a profoundly GPU-limited experience in Pc Building Simulator, with frame rates that scale almost entirely with resolution and settings rather than CPU capability. The data shows a system capable of 349 FPS at 1080p Low, but one that drops to 89 FPS at 4K Ultra — a 74% reduction that clearly identifies the RTX 5090 D as the performance ceiling in this simulation title.

Resolution Scaling

The measured FPS data reveals a steep and consistent resolution curve. At 1080p Low, the combo delivers 349 FPS; at 1440p Low, that falls to 299 FPS; and at 4K Low, it drops further to 187 FPS. That represents a 46.4% loss from 1080p to 4K at Low settings. The pattern is similar at High settings: 269 FPS at 1080p, 179 FPS at 1440p, and 94 FPS at 4K — a 65% drop across the resolution range. At Ultra, the numbers are 265 FPS (1080p), 171 FPS (1440p), and 89 FPS (4K), a 66.4% decline.

This scaling behavior is characteristic of a GPU-bound scenario. When the RTX 5090 D is pushed to 4K, its workload increases dramatically, while the i5-12400's six cores have ample headroom to feed frames at lower resolutions. The fact that 1080p Ultra (265 FPS) is nearly identical to 1080p High (269 FPS) — a mere 1.5% difference — suggests the CPU is already approaching its limit around the 270 FPS mark. Meanwhile, at 4K, the gap between Low (187 FPS) and Ultra (89 FPS) is a massive 52.4%, indicating the GPU's shading units, texture units, and memory bandwidth are the primary constraints.

The 1440p Medium result (254 FPS) sits closer to 1080p Medium (307 FPS) than to 4K Medium (133 FPS), reinforcing that the transition from 1440p to 4K is where the RTX 5090 D's 1.79 TB/s bandwidth and 104.8 TFLOPS compute begin to saturate. For a simulation game like Pc Building Simulator, which is not known for extreme graphical fidelity, these numbers suggest the GPU is being pushed well beyond typical workloads.

How This Combo Ranks

The combination of the i5-12400 and RTX 5090 D ranks 87th out of 3002 tested combos in Pc Building Simulator, placing it in the 97.1st percentile of all systems tested. This is an exceptional ranking, though not the absolute top — the top 86 combos achieve higher average FPS, likely pairing the RTX 5090 D with faster CPUs that can push past the ~270 FPS ceiling observed here at 1080p.

The i5-12400's percentileVsAllCpus of 72 indicates it is a solidly above-average processor, but not elite. Its nearest rivals include the AMD EPYC 7643 (avg score 18697, deltaPct -0.1), Intel Core i7-1355U (18730, -0.3), AMD Ryzen AI 5 330 (18811, -0.7), and Intel Core i3-14100F (18519, +0.9). These deltas are all within 1%, meaning the i5-12400's CPU benchmark scores are essentially tied with its closest competitors — a fact that matters little in a game where the GPU dominates.

On the GPU side, the RTX 5090 D's percentileVsAllGpus is 92, and its nearest rivals are surprising: the AMD Radeon RX 6650M XT (avg score 76904, deltaPct 1.1), AMD Radeon RX 6850M XT (78940, -1.6), NVIDIA Tesla P100 PCIe 12 GB (79396, -2.1), and Tesla P100 PCIe 16 GB (79605, -2.4). These mobile and datacenter parts are close in average benchmark score, but the RTX 5090 D's 32 GB of GDDR7 and 512-bit bus give it a decisive edge in actual gaming scenarios, as evidenced by its top-tier percentile ranking.

CPU Role

The Intel Core i5-12400 is a 6-core, 12-thread Alder Lake-S processor with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. Its 18 MB of shared L3 cache and 1.25 MB L2 per core provide adequate throughput for a simulation title. In Pc Building Simulator, the CPU's role is secondary — the data shows that at 1080p Low, the combo hits 349 FPS, but at 1080p Ultra, it only reaches 265 FPS, a 24% drop that is almost entirely attributable to the GPU's increased workload.

However, the CPU does impose a ceiling. The near-identical results at 1080p High (269 FPS) and 1080p Ultra (265 FPS) — a 1.5% difference — suggest the i5-12400's single-thread performance (3dmark single-thread score of 910, Cinebench R23 single-core of 2257) is the limiting factor once frame rates approach 270 FPS. The CPU's 3dmark 16-thread score of 5873 and max-thread score of 5890 indicate that multi-threaded scaling is minimal beyond 16 threads, which is typical for a 6-core part.

The i5-12400's passmark single-thread score of 3456 and geekbench singlecore score of 1848 are respectable but not class-leading. Its nearest rivals in average benchmark score — the EPYC 7643 and i7-1355U — are within 0.3% of its 18683 average, confirming that the CPU is a mid-pack performer in synthetic tests. In-game, this translates to a hard ceiling around 270 FPS at 1080p, regardless of settings. At 4K, the CPU is never the bottleneck, as the GPU's frame times dominate.

Measured FPS Breakdown

At 1080p, the combo delivers its best results. Low settings produce 349 FPS, Medium 307 FPS (with a minimum of 261 and maximum of 353), High 269 FPS, and Ultra 265 FPS. The spread from Low to Ultra is 84 FPS, or 24.1%. Notably, the Medium preset's minimum of 261 FPS is close to the Ultra average of 265 FPS, indicating some frame-time variance at this resolution.

At 1440p, the numbers scale predictably. Low yields 299 FPS, Medium 254 FPS (min 216, max 292), High 179 FPS, and Ultra 171 FPS. The drop from Low to Ultra is 128 FPS, or 42.8%. The Medium preset's minimum of 216 FPS is still well above 60 FPS, but the gap between Medium and High (75 FPS) is notable — suggesting a significant increase in GPU workload when moving from Medium to High settings.

At 4K, performance becomes more subdued. Low settings produce 187 FPS, Medium 133 FPS (min 113, max 153), High 94 FPS, and Ultra 89 FPS. The Medium preset's minimum of 113 FPS is the only sub-120 FPS minimum recorded across all resolution/settings combinations, indicating that 4K Medium is the threshold for maintaining high refresh rates. The gap between Low and Medium at 4K is 54 FPS (28.9%), while the gap between Medium and High is 39 FPS (29.3%). High and Ultra are nearly identical at 94 and 89 FPS, respectively, suggesting diminishing returns from High to Ultra at this resolution.

The 4K Medium row is the only one with both min and max values recorded (113 and 153), providing a 40 FPS range. This variance is larger than the 1440p Medium range (76 FPS) and 1080p Medium range (92 FPS), but proportionally smaller relative to the average FPS.

GPU Role

The NVIDIA GeForce RTX 5090 D is a Blackwell 2.0 architecture GPU built on a 5 nm process with 92,200 million transistors on a 750 mm² die. Its 32 GB of GDDR7 memory on a 512-bit bus delivers 1.79 TB/s of bandwidth — a figure that becomes crucial at 4K resolutions where texture streaming and frame buffer requirements escalate. The GPU's base clock of 2017 MHz and boost clock of 2407 MHz, combined with 21760 shading units and 680 tensor cores, provide massive compute throughput: 104.8 TFLOPS FP32.

In Pc Building Simulator, the RTX 5090 D is clearly the dominant component. The 4K Ultra result of 89 FPS, while low relative to 1080p, is still a playable frame rate for a simulation game. The GPU's passmark G3D score of 44065 and 3dmark Steel Nomad DX12 score of 14326 place it in the 92nd percentile of all GPUs. Its nearest rivals in average benchmark score — the RX 6650M XT, RX 6850M XT, and Tesla P100 variants — all have lower memory capacities and bandwidths, which explains why the RTX 5090 D excels specifically at high-resolution gaming.

The GPU's memory clock of 1750 MHz (28 Gbps effective) and 1.79 TB/s bandwidth are the key differentiators at 4K. The 32 GB capacity means VRAM is never a constraint in Pc Building Simulator, even at Ultra settings with high-resolution textures. The pixel rate of 423.6 GPixel/s and texture rate of 1,636.8 GTexel/s are more than sufficient for this title's workload, and the data confirms that the GPU is the limiting factor at resolutions above 1080p.

Settings Recommendations

For 1440p and 1080p displays, the Ultra preset is the clear choice. At 1080p Ultra, the combo delivers 265 FPS — a 1.5% drop from High (269 FPS) but with the full visual fidelity. At 1440p Ultra, 171 FPS is achieved, which is still well above the 144 Hz refresh rate common on modern monitors. The cost of moving from High to Ultra at 1440p is only 8 FPS (4.5%), making Ultra the obvious pick for these resolutions.

At 4K, the recommendation shifts. The Ultra preset's 89 FPS is playable, but the Medium preset's 133 FPS (with a minimum of 113) offers a much better balance of visual quality and smoothness. The jump from Medium to High at 4K costs 39 FPS (29.3%) while the jump from High to Ultra costs only 5 FPS (5.3%). This suggests that High and Ultra are visually similar in Pc Building Simulator, and the 94 FPS High result is the best choice for 4K users who want maximum fidelity without dipping below 90 FPS.

For users with high-refresh-rate 4K displays (144 Hz or above), the Low preset at 187 FPS is the only option that fully saturates such panels. However, the Medium preset at 133 FPS is likely the sweet spot for most 4K users, offering a 41.6% improvement over High while maintaining a minimum of 113 FPS. The 1080p Low result of 349 FPS demonstrates the combo's ability to exceed 300 FPS at lower resolutions, but the visual compromise is rarely worth it given that 1080p Ultra delivers 265 FPS — a 24% reduction that is imperceptible at typical refresh rates.

Ultimately, the data indicates that this combo is best utilized at 1440p Ultra for maximum visual quality, or 4K Medium for a balanced experience. The GPU's 32 GB VRAM and 1.79 TB/s bandwidth ensure that no settings combination will cause memory-related stuttering, and the CPU's 6 cores are sufficient for the simulation workload at any resolution below the ~270 FPS ceiling.