Pc Building Simulator

# Pc Building Simulator — Intel Core i5-12400 + AMD Radeon RX 6750 XT

The Intel Core i5-12400 paired with the AMD Radeon RX 6750 XT delivers a robust experience in Pc Building Simulator, a Simulation title released on 2019-01-28. With 6 cores and 12 threads on the CPU side and a 12 GB GDDR6 GPU, this combo lands at rank 851 out of 1769 tested combinations. The measured frame rates show a system that scales predictably across resolutions and settings, with the GPU becoming the primary constraint at 4K while the CPU demonstrates ample headroom at lower resolutions.

Resolution Scaling

The frame rate progression from 1920x1080 to 3840x2160 reveals a classic GPU-bound curve. At High settings, the average FPS drops from 144.1 at 1080p to 89.2 at 1440p, a decline of 38.1%, and then to 48.4 at 4K, representing a 66.4% reduction from the 1080p baseline. This steep falloff indicates that the Radeon RX 6750 XT's rendering throughput is the limiting factor as pixel count increases, rather than any CPU bottleneck.

The Low settings data reinforces this interpretation. At 1080p Low, the system produces 279.7 FPS, which is 94.1% higher than the High setting at the same resolution. Moving to 1440p Low yields 177.3 FPS, and 4K Low still manages 92.4 FPS. The gap between Low and High settings widens with resolution: at 1080p the difference is 135.6 FPS (279.7 vs 144.1), while at 4K it narrows to 44.0 FPS (92.4 vs 48.4). This compression at higher resolutions suggests that even at Low settings, the GPU is working harder to fill 4K pixels, reducing the relative benefit of lowering graphical fidelity.

Ultra settings show the most dramatic scaling penalty. At 1080p Ultra, the combo hits 134.9 FPS, only 6.4% below High. However, at 1440p Ultra it drops to 88.1 FPS, and at 4K Ultra it falls to 44.5 FPS — barely above half the 1080p Ultra figure. The 1080p to 4K drop of 67.0% at Ultra is the largest across all settings, confirming that the RX 6750 XT's 432.0 GB/s memory bandwidth and 13.31 TFLOPS FP32 compute become saturated when pushing 4K Ultra in this simulation-heavy title.

GPU Role

The AMD Radeon RX 6750 XT, built on the RDNA 2.0 architecture with the Navi 22 chip, carries 2560 shading units, 160 TMUs, and 64 ROPs. Its memory subsystem provides 12 GB of GDDR6 across a 192-bit bus, delivering 432.0 GB/s of bandwidth. The GPU clocks run at 2150 MHz base and 2600 MHz boost, with a game clock of 2495 MHz. These specifications place the card at the 79th percentile among all GPUs, with an average benchmark score of 35327.

In Pc Building Simulator, the GPU's role is most evident in the 4K results. At 4K Ultra, the combo produces 44.5 FPS, while 4K High reaches 48.4 FPS — a modest 8.8% improvement. The 4K Medium setting achieves 66.7 FPS, and 4K Low jumps to 92.4 FPS. This pattern indicates that the RX 6750 XT's compute and memory resources are being taxed heavily at 4K, with each settings tier representing a meaningful workload reduction. The 40 RT cores and DirectX 12 Ultimate support (12_2) are present, though Pc Building Simulator's simulation-focused gameplay likely relies more on rasterization throughput than ray tracing.

The GPU's nearest rivals in aggregate benchmarks include the AMD Radeon RX 5600M (0.2% higher score), NVIDIA GeForce RTX 5070 Ti Mobile (-0.3%), AMD Radeon 880M (-0.9%), and NVIDIA GeForce RTX 3080 (-1.3%). The RX 6750 XT sits essentially level with these competitors, yet its 12 GB VRAM capacity provides headroom for high-resolution textures that the measured FPS data suggests is being utilized, given the steep 4K scaling penalties.

CPU Role

The Intel Core i5-12400 operates with 6 cores and 12 threads, running at a base clock of 2.50 GHz and boosting up to 4.40 GHz. This Alder Lake-S part, fabricated on Intel's 10 nm process, includes 18 MB of shared L3 cache and 1.25 MB of L2 per core. Its 65 W TDP and dual-channel memory support (DDR4 and DDR5) make it a mainstream desktop component. The CPU holds the 77th percentile among all CPUs, with an average benchmark score of 19850.

At 1080p, the CPU demonstrates clear dominance. The 1920x1080 Low setting produces 279.7 FPS, and even Ultra reaches 134.9 FPS. These numbers far exceed what the GPU can sustain at higher resolutions, indicating that the i5-12400 is not the limiting factor at 1080p. The single-thread performance, measured at 910 in 3dmark_single_thread and 3456 in passmark_single_thread, proves sufficient for the simulation's logic and game-state calculations.

The CPU's benchmark scores provide context for its headroom. In Cinebench R23, it scores 15935 multi-core and 2249 single-core, while 3dmark_max_threads yields 5890. These figures suggest strong multi-threaded capability for a 6-core part, which is relevant given that Pc Building Simulator's simulation workload can utilize multiple threads for component interactions and system modeling. The nearest CPU rivals include the Intel Core i7-9700 (0.1% higher), Intel Core i7-8700 (-0.2%), AMD Ryzen Threadripper PRO 5995WX (-0.4%), and Intel Core i5-11600K (0.4%). The i5-12400's aggregate score of 19850 sits within 0.4% of these alternatives, indicating performance parity despite architectural differences.

How This Combo Ranks

The combination of Intel Core i5-12400 and AMD Radeon RX 6750 XT achieves rank 851 out of 1769 tested combos in Pc Building Simulator, placing it in the upper half of the database at approximately the 52nd percentile. This ranking reflects the balanced nature of the pairing: the CPU's 77th percentile standing and the GPU's 79th percentile both contribute, yet the combination does not crack the top tier due to the GPU's 4K limitations.

The rank suggests that many other combinations outperform this setup in this specific game. Given that the data is measured (dataIsMeasured: true), these are real FPS results rather than estimates. The combo's position in the middle of the pack indicates that while it handles 1080p and 1440p admirably, the 4K Ultra performance of 44.5 FPS likely drags down its overall standing compared to combos with more powerful GPUs. The CPU's aggregate score of 19850, nearly identical to the i7-9700 (19831) and i7-8700 (19894), means that CPU swaps within this performance class would not dramatically alter the ranking — the GPU choice is the differentiator.

Measured FPS Breakdown

At 1920x1080, the combo delivers 279.7 FPS on Low, 200 FPS on Medium, 144.1 FPS on High, and 134.9 FPS on Ultra. The jump from Low to Medium costs 79.7 FPS (28.5% reduction), while Medium to High drops another 55.9 FPS (28.0%), and High to Ultra only loses 9.2 FPS (6.4%). This plateau between High and Ultra suggests diminishing returns at the top settings tier, with the CPU likely maintaining frame rates while the GPU approaches its efficiency sweet spot.

At 2560x1440, the numbers are 177.3 FPS (Low), 124.4 FPS (Medium), 89.2 FPS (High), and 88.1 FPS (Ultra). The Medium to High drop of 35.2 FPS (28.3%) is steeper than at 1080p, while High to Ultra shows a negligible 1.1 FPS difference (1.2%). This near-identical performance between High and Ultra at 1440p indicates that the GPU is becoming the bottleneck, as additional settings quality cannot be fully rendered without impacting frame rate.

At 3840x2160, the results are 92.4 FPS (Low), 66.7 FPS (Medium), 48.4 FPS (High), and 44.5 FPS (Ultra). The progression shows consistent drops: Low to Medium loses 25.7 FPS (27.8%), Medium to High loses 18.3 FPS (27.4%), and High to Ultra loses only 3.9 FPS (8.1%). The 4K Ultra figure of 44.5 FPS is the lowest measured, and the narrow gap between High and Ultra mirrors the 1440p pattern, reinforcing that the RX 6750 XT's 166.4 GPixel/s pixel rate is the ceiling at this resolution.

FAQ

Q: What is the best resolution for this combo in Pc Building Simulator?

A: The data shows that 2560x1440 High produces 89.2 FPS, which is smooth and far above 60 FPS. For higher refresh rates, 1920x1080 Ultra hits 134.9 FPS, making 1080p the choice for maximum fluidity.

Q: How does this combo perform at 4K Ultra settings?

A: At 3840x2160 Ultra, the average FPS is 44.5, which is below the 60 FPS threshold for smooth gameplay. Dropping to 4K High yields 48.4 FPS, while 4K Medium reaches 66.7 FPS.

Q: Is the Intel Core i5-12400 a bottleneck for the RX 6750 XT?

A: The CPU's single-thread score of 910 (3dmark) and multi-thread score of 5890 (3dmark_max) appear sufficient, as evidenced by 1080p Low producing 279.7 FPS. The GPU becomes the limiting factor at higher resolutions.

Q: How does this combo rank among all tested combinations?

A: It ranks 851 out of 1769 combos in Pc Building Simulator, placing it in the upper half of the database. The GPU's 79th percentile and CPU's 77th percentile are closely matched.

Q: What is the frame rate difference between High and Ultra settings at 1440p?

A: At 2560x1440 High, the average FPS is 89.2, while Ultra achieves 88.1 FPS — a difference of only 1.1 FPS (1.2%), indicating that Ultra settings add minimal visual cost at this resolution.

Q: Does the 12 GB VRAM help at 4K?

A: The 12 GB GDDR6 memory provides 432.0 GB/s of bandwidth, and the 4K results show playable frame rates at Medium (66.7 FPS) and High (48.4 FPS). However, the GPU's 13.31 TFLOPS compute appears to be the primary constraint at 4K Ultra.