Pc Building Simulator

# Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data for Pc Building Simulator shows a steep and consistent performance decline as resolution increases, revealing a system that is heavily constrained by the graphics subsystem. At 1080p Low, the combo delivers 125 FPS average, but dropping to 1440p Low cuts that to 79 FPS — a 36.8% reduction. Moving further to 4K Low yields 41 FPS, which is 67.2% below the 1080p result. This scaling pattern is typical of a GPU-bound workload: the CPU has ample headroom at lower resolutions, but the graphics processor cannot maintain frame rates as pixel count grows.

The trend persists across all settings presets. At Medium settings, 1080p averages 88 FPS, 1440p drops to 56 FPS (a 36.4% decline), and 4K falls to 29 FPS (a 67.0% decline from 1080p). High settings show 62 FPS at 1080p, 39 FPS at 1440p (37.1% lower), and 21 FPS at 4K (66.1% lower). Ultra settings follow the same pattern: 59 FPS at 1080p, 38 FPS at 1440p (35.6% lower), and 20 FPS at 4K (66.1% lower). The consistency of these percentage drops across all four presets is striking — it indicates that resolution scaling is the dominant factor, regardless of quality level.

The data suggests that the limiting component at 4K is unequivocally the GPU. The Intel Arc B390, with its System Shared memory and 80 W TDP, is a low-power integrated-class part. Its nearest rivals in the benchmark database include NVIDIA GeForce GT 520MX and GT 710 — legacy entry-level discrete GPUs. The Arc B390's 3DMark Steel Nomad DX12 score of 1482 places it in the 9th percentile among all GPUs, confirming its position at the very low end of graphics performance. When the render resolution increases from 1080p to 4K, the pixel throughput requirement quadruples, and this GPU simply lacks the shading units, texture units, and memory bandwidth to cope.

# GPU Role — VRAM, clocks, and how they relate to this game's results

The Intel Arc B390 is built on the Xe3-LPG architecture, codenamed Panther Lake, fabricated on Intel's 3 nm process. Its base clock is 300 MHz and boost clock reaches 2500 MHz, but the memory configuration is the most telling specification: it uses System Shared memory, meaning there is no dedicated VRAM. The memory type, bus width, and bandwidth are all listed as System Shared or System Dependent, which means the GPU borrows from the main system memory pool. This is a fundamental limitation for a game like Pc Building Simulator, which needs to store textures and geometry for rendering; without dedicated high-bandwidth VRAM, performance suffers especially at higher resolutions and quality settings.

The GPU has 1536 shading units, 48 texture mapping units, and 24 raster output units. It also includes 12 ray tracing cores. The pixel rate is 60.00 GPixel/s and texture rate is 120.0 GTexel/s, with FP32 compute at 7.680 TFLOPS. These specifications are modest by modern standards, and the benchmark data confirms the GPU's low standing: its percentile rank among all GPUs is 9, and its average benchmark score is 1482 from the single 3DMark Steel Nomad DX12 test. The nearest rivals are NVIDIA GeForce GT 520MX (score 1463, deltaPct 1.3), GeForce 800M (1460, deltaPct 1.5), GT 625 OEM (1446, deltaPct 2.5), and GT 710 (1443, deltaPct 2.7). The Arc B390 outperforms these by between 1.3% and 2.7%, which is a negligible margin in real-world gaming.

The measured FPS data shows that at 1080p Low, the system achieves 125 FPS, but at 4K Ultra it falls to 20 FPS. The GPU is the primary bottleneck throughout. Even at 1080p, the gap between Low and Ultra is significant: 125 FPS versus 59 FPS, a 52.8% reduction. This indicates that the GPU's limited shading and texture resources are stressed by higher quality settings, not just by resolution. The System Shared memory arrangement exacerbates this, as the GPU must contend with the CPU for memory access, and there is no dedicated high-speed VRAM pool to accelerate texture fetching and frame buffer operations.

# CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 9 7900X presents a stark contrast to the GPU. This is a 12-core, 24-thread processor based on Zen 4 architecture (Raphael), manufactured on TSMC's 5 nm process. It has a base clock of 4.70 GHz and boost clock of 5.60 GHz, with 64 KB L1 cache per core, 1 MB L2 per core, and 64 MB shared L3 cache. The CPU supports DDR5 memory with dual-channel bus and 83.2 GB/s bandwidth, and it launched with an MSRP of $549. Its benchmark results are robust: Cinebench R23 multicore scores 29300, single-core 2016.5; Geekbench multicore 19267, single-core 2617; Passmark multithread 51406. The CPU's percentile rank among all CPUs is 91, placing it in the top decile of processors.

Nearest CPU rivals include AMD EPYC 7313P (avgScore 53206, deltaPct 0.2), Intel Xeon Phi 7290 (53469, deltaPct -0.3), Intel Xeon 634 (52974, deltaPct 0.6), and Intel Core i7-14700F (53620, deltaPct -0.6). The Ryzen 9 7900X's average benchmark score is 53288, which is within 0.6% of all these rivals — essentially a statistical tie in aggregate compute performance. This processor is clearly not the bottleneck in Pc Building Simulator.

Evidence for CPU headroom comes from the resolution scaling data. If the CPU were the limiting factor, FPS would remain roughly constant as resolution increases, because the CPU's workload (game logic, physics, draw calls) does not scale with pixel count. Instead, we observe FPS dropping by roughly two-thirds from 1080p to 4K across all settings. This is the signature of a GPU-bound system. At 1080p Low, the CPU can feed the GPU enough frames to hit 125 FPS, but the GPU cannot keep up at higher resolutions. The 12 cores and 24 threads of the Ryzen 9 7900X are far more than Pc Building Simulator requires; the game's simulation and management mechanics are not heavily multithreaded, but the CPU's strong single-thread performance (Cinebench R23 single-core 2016.5) ensures smooth game logic execution regardless of GPU load.

# Settings Recommendations — which preset gives the best experience per the measured rows

Examining the measured FPS rows, the sweet spot for this combination of CPU and GPU is 1080p Medium. This preset delivers an average of 88 FPS with a minimum of 75 FPS and maximum of 102 FPS. The minimum frame rate of 75 FPS is above the 60 FPS threshold that most users consider playable, and the average of 88 FPS provides a comfortable margin. At 1080p High, the average drops to 62 FPS, which is still playable but leaves less headroom for demanding scenes. At 1080p Ultra, the average falls to 59 FPS, dipping below 60 FPS on average, which may result in perceptible stutter on standard 60 Hz displays.

For users with 1440p monitors, the Medium preset at 56 FPS average (min 47, max 64) is the highest quality setting that maintains an average above 50 FPS. The 47 FPS minimum is borderline, but acceptable for a simulation game where fast reflexes are not critical. At 1440p Low, the average rises to 79 FPS, which is smoother but sacrifices visual fidelity. The 1440p High preset at 39 FPS and Ultra at 38 FPS are below the 40 FPS threshold and may feel sluggish.

At 4K, no preset achieves a comfortable frame rate. The best result is Low at 41 FPS average, followed by Medium at 29 FPS, High at 21 FPS, and Ultra at 20 FPS. The 41 FPS at 4K Low is marginally playable for a simulation title, but the visual quality reduction is substantial. Given that Pc Building Simulator is a simulation game with a focus on system building rather than fast-paced action, a stable 30 FPS might be tolerable, but even that requires dropping to Medium at 4K (29 FPS average, min 25). The data suggests that 1080p Medium is the best overall compromise, delivering smooth performance while retaining moderate visual quality. If the user prioritizes frame rate over visuals, 1080p Low at 125 FPS or 1440p Low at 79 FPS are excellent choices.

# How This Combo Ranks — use comboRankInGame vs other tested combos

In the benchmark database, this combination of AMD Ryzen 9 7900X and Intel Arc B390 ranks 2650 out of 3002 tested combos in Pc Building Simulator. This places it in the bottom 11.7% of all configurations tested, which is consistent with the GPU being the limiting factor. The CPU is a top-tier processor (91st percentile among CPUs), but the GPU is in the 9th percentile among GPUs, and the overall combo ranking reflects the weaker component.

The rank of 2650 out of 3002 indicates that 351 other combos perform worse, while 2649 perform better. This is a poor showing for a system with such a powerful CPU, but it is entirely explained by the GPU's low-end position. The Arc B390's nearest GPU rivals include GT 520MX, GeForce 800M, GT 625 OEM, and GT 710 — all legacy parts from a decade ago. The GPU's 3DMark Steel Nomad score of 1482 is barely above these parts, and its System Shared memory configuration prevents it from competing with even modest discrete GPUs.

The data suggests that pairing a high-end 12-core CPU with this integrated-class GPU results in a heavily imbalanced system for gaming. The CPU's potential is wasted in this configuration because the GPU cannot render frames fast enough to utilize the CPU's processing power. In Pc Building Simulator, which has modest CPU requirements, the Ryzen 9 7900X is effectively idle while the GPU struggles. Users seeking better performance would need to pair this CPU with a significantly more capable GPU, but based on the measured data, the current combo ranks near the bottom of the tested field.

# FAQ

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

A: The measured data shows that 1080p provides the most playable experience. At 1080p Medium, the average FPS is 88 with a minimum of 75, while at 1440p Medium the average drops to 56 and at 4K Medium to 29. 1080p is the only resolution where all presets exceed 59 FPS average.

Q: Is the CPU or GPU the bottleneck in this system?

A: The GPU is the bottleneck. The evidence comes from resolution scaling: FPS drops by approximately two-thirds from 1080p to 4K across all settings, which is characteristic of GPU limitation. The CPU (AMD Ryzen 9 7900X) ranks in the 91st percentile among all CPUs, while the GPU (Intel Arc B390) ranks in the 9th percentile.

Q: How does the Arc B390 compare to its nearest GPU rivals?

A: The Arc B390 has a 3DMark Steel Nomad DX12 score of 1482. It outperforms the NVIDIA GeForce GT 520MX (1463) by 1.3%, the GeForce 800M (1460) by 1.5%, the GT 625 OEM (1446) by 2.5%, and the GT 710 (1443) by 2.7%. These are all legacy entry-level GPUs.

Q: Can this system run Pc Building Simulator at 4K?

A: At 4K, the highest average FPS is 41 on Low settings. Medium achieves 29 FPS, High 21 FPS, and Ultra 20 FPS. None of these are consistently smooth, though 4K Low at 41 FPS may be tolerable for a simulation game on a lower-refresh-rate display.

Q: What is the best settings preset for smooth gameplay?

A: 1080p Medium delivers 88 FPS average with a minimum of 75 FPS, which provides a smooth experience. Alternatively, 1440p Low at 79 FPS average is viable for higher resolution with reduced visual quality. Avoid Ultra settings at any resolution above 1080p, as they drop below 40 FPS.

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

A: This combo ranks 2650 out of 3002 tested combos in Pc Building Simulator, placing it in the bottom 11.7% of all configurations. This poor ranking is due to the GPU's low performance, despite the CPU being a high-end processor.

# Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

1920x1080 (1080p)

• Low: 125 FPS average
• Medium: 88 FPS average, 75 FPS minimum, 102 FPS maximum
• High: 62 FPS average
• Ultra: 59 FPS average

At 1080p, the system is most capable. Low settings achieve 125 FPS average, which is more than double the 60 FPS threshold. Medium settings at 88 FPS provide a good balance, with the minimum of 75 FPS ensuring consistent frame delivery. High settings drop to 62 FPS average, still above 60, while Ultra at 59 FPS average is marginally below the 60 FPS mark.

2560x1440 (1440p)

• Low: 79 FPS average
• Medium: 56 FPS average, 47 FPS minimum, 64 FPS maximum
• High: 39 FPS average
• Ultra: 38 FPS average

The 1440p results show a significant drop from 1080p. Low settings retain a respectable 79 FPS average, but Medium falls to 56 FPS with a 47 FPS minimum. High and Ultra presets both fall below 40 FPS, indicating that the GPU cannot handle high-quality rendering at this resolution.

3840x2160 (4K)

• Low: 41 FPS average
• Medium: 29 FPS average, 25 FPS minimum, 34 FPS maximum
• High: 21 FPS average
• Ultra: 20 FPS average

At 4K, the system is severely GPU-limited. Low settings achieve 41 FPS average, which is the only preset above 30 FPS. Medium drops to 29 FPS, High to 21 FPS, and Ultra to 20 FPS. The minimum frame rate of 25 FPS at Medium indicates that even the best 4K preset will experience noticeable frame drops.

The data across all resolutions and settings shows a consistent pattern: the Intel Arc B390 cannot maintain high frame rates at resolutions above 1080p, and even at 1080p, only Low and Medium presets exceed 60 FPS average. The AMD Ryzen 9 7900X provides ample CPU performance, but the GPU's System Shared memory and low compute throughput (7.680 TFLOPS FP32) limit the overall experience. For users of this combo, sticking to 1080p Medium or Low is the only way to achieve smooth gameplay in Pc Building Simulator.