Pc Building Simulator

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

The AMD Ryzen 9 7900X is a 12-core, 24-thread processor from the 7000 series, built on the Zen 4 architecture (codenamed Raphael) using TSMC's 5 nm process. Its base clock is 4.70 GHz with a boost clock of 5.60 GHz, and it carries a 170 W TDP. The chip features 64 KB of L1 cache per core, 1 MB of L2 per core, and a shared 64 MB L3 cache. Memory support is DDR5 over a dual-channel bus, offering 83.2 GB/s of bandwidth. This processor uses the AMD Socket AM5 and supports PCIe Gen 5 with 24 lanes from the CPU.

Benchmark results place this CPU in the 91st percentile among all tested processors, with an average benchmark score of 53,288. Its closest rivals in aggregate performance are the AMD EPYC 7313P (0.2% slower), the Intel Xeon Phi 7290 (0.3% faster), the Intel Xeon 634 (0.6% slower), and the Intel Core i7-14700F (0.6% faster). These deltas are minuscule, meaning the 7900X sits in a very tight performance cluster where no single rival holds a meaningful edge in general compute.

In multi-threaded workloads, the 7900X posts a Cinebench R23 multicore score of 29,300 and a Geekbench multicore score of 19,267. Single-thread performance is strong as well: Cinebench R23 single-core reaches 2,016.5, and Geekbench single-core hits 2,617. For Pc Building Simulator, a simulation title that relies heavily on CPU logic for component interaction, system assembly, and in-game physics, these single-thread and multi-thread numbers are both relevant. The game's simulation loop tends to be serial in nature, so the 5.60 GHz boost clock and high single-core scores matter for maintaining consistent frame pacing. At the same time, the 24 threads handle background tasks and complex simulation states without bottlenecking.

The data shows that the 7900X's 3DMark results scale predictably with thread count: 1,093 single-thread, 2,137 for 2 threads, 4,151 for 4 threads, 7,798 for 8 threads, 10,972 for 16 threads, and 12,536 for max threads. This scaling pattern indicates the processor is well-balanced, but for Pc Building Simulator, the game's frame rates are not limited by the CPU in most tested configurations. The measured FPS values at 1080p Low (113 FPS) versus 4K Low (37 FPS) show a dramatic drop that cannot be attributed to the CPU alone. The 7900X is more than capable of feeding frames even at the lowest settings; the bottleneck shifts decisively to the GPU as resolution increases.

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

The Intel Arc B370 is an integrated graphics processor (IGP) based on the Xe3-LPG architecture, built on Intel's 3 nm process with the Panther Lake chip. Its base clock is 300 MHz and boost clock reaches 2400 MHz. The GPU has 1,280 shading units, 40 texture mapping units, and 20 raster output units, along with 10 ray tracing cores. Pixel rate is 48.00 GPixel/s, texture rate is 96.00 GTexel/s, and FP32 compute is 6.144 TFLOPS. FP16 performance is 12.29 TFLOPS (2:1 ratio). The TDP is just 25 W, and it uses no power connectors, drawing power from the system bus. Memory is system-shared, meaning there is no dedicated VRAM; the GPU uses the host system's DDR5 memory with bandwidth described as system dependent.

This GPU's benchmark presence is minimal: it has a single 3DMark Steel Nomad DX12 score of 1,184, placing it in the 5th percentile among all GPUs. Its nearest rivals are the ATI Mobility Radeon HD 5570 (0.2% faster), the ATI Radeon HD 5770 (0.5% faster), the AMD Radeon HD 7650M (0.7% faster), and the AMD FirePro M2000 (1.4% slower). These are all legacy discrete GPUs from over a decade ago, and the Arc B370 trades blows with them in synthetic tests. This context is crucial: the Arc B370 is not a gaming powerhouse, and its integrated nature means it shares memory bandwidth with the CPU.

In Pc Building Simulator, the GPU's role becomes apparent in the measured FPS across resolutions. At 1080p Low, the system achieves 113 FPS, which suggests the Arc B370 can handle the game's basic rendering demands when the resolution and settings are low. However, as resolution increases to 1440p and 4K, the frame rates collapse. The 4K High result of 19 FPS and 4K Ultra of 18 FPS indicate that the GPU is severely limited by its memory bandwidth and compute throughput. The system-shared memory is a particular weakness; at 4K, the GPU must access the same memory bus as the CPU, creating contention that further reduces performance. The 10 ray tracing cores are present, but the game's settings do not appear to leverage them in a way that offsets the raw performance deficit.

FAQ

Q: How does the Ryzen 9 7900X compare to its nearest rival in multi-core performance?

A: The 7900X's average benchmark score is 53,288, which is 0.2% higher than the AMD EPYC 7313P and 0.6% higher than the Intel Xeon 634. It trails the Intel Xeon Phi 7290 by 0.3% and the Intel Core i7-14700F by 0.6%. These differences are within noise, indicating near-identical aggregate compute performance.

Q: What is the Arc B370's performance percentile, and what does that mean for gaming?

A: The Arc B370 sits in the 5th percentile among all GPUs, with a single benchmark score of 1,184. This places it far below mainstream gaming GPUs, and the measured FPS in Pc Building Simulator confirms this: 4K Ultra averages just 18 FPS, while 1080p Low reaches 113 FPS. It is only viable at lower resolutions and settings.

Q: Why does the FPS drop so sharply from 1080p to 4K?

A: The FPS drops from 113 FPS at 1080p Low to 37 FPS at 4K Low, a reduction of 76 FPS. This is a 67% decrease in performance as resolution quadruples. The system-shared memory and limited compute (6.144 TFLOPS FP32) mean the GPU cannot sustain the fill rate required at higher pixel counts.

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

A: At 1080p Low, the CPU's strong single-thread score (2,016.5 in Cinebench R23) allows the Arc B370 to reach 113 FPS, suggesting a balanced workload. However, at 4K, the GPU's 5th percentile ranking and 18-19 FPS results in High and Ultra settings make it the clear limiting component. The CPU is not the constraint at higher resolutions.

Q: How does the Arc B370's memory configuration affect performance?

A: The GPU uses system-shared memory with system-dependent bandwidth, meaning it has no dedicated VRAM. In a simulation game like Pc Building Simulator, this creates contention with the CPU for memory access. The 83.2 GB/s memory bandwidth of the 7900X is shared, and the GPU must compete for it, further reducing performance at 4K where memory pressure is highest.

Q: What is the best setting for a playable experience?

A: The only configuration that approaches standard 60 FPS is 1080p Low at 113 FPS. 1080p Medium averages 80 FPS, and 1080p High averages 56 FPS. At 1440p, even Low dips to 71 FPS. For a stable experience, 1080p Low or Medium are the only viable options, as 4K is entirely unplayable across all settings.

How This Combo Ranks

The combination of the AMD Ryzen 9 7900X and Intel Arc B370 ranks 2,761 out of 3,002 tested combos in Pc Building Simulator. This places it in the bottom 8% of all configurations. The rank reflects the GPU's severe limitation rather than the CPU's capability. The 7900X alone is in the 91st percentile of CPUs, but the Arc B370's 5th percentile standing drags the overall combo down.

The disparity between the two components is stark. The CPU's nearest rivals in aggregate benchmark scores are all within 0.6% of the 7900X, showing it is a top-tier processor. The GPU's nearest rivals are all legacy parts from the HD 5000/7000 era, and the Arc B370's 1,184 score is barely competitive with them. In Pc Building Simulator, where the simulation logic and rendering are intertwined, the combo's rank is determined by the weakest link. The data shows that even with a high-end CPU, the Arc B370 cannot deliver playable frame rates at 1440p or 4K, capping the system's usefulness at 1080p.

This rank also suggests that the CPU's potential is largely wasted in this pairing. The 7900X's multi-threaded scores (29,300 in Cinebench R23, 19,267 in Geekbench) are irrelevant when the GPU cannot produce more than 113 FPS even at the lowest settings. In a game like Pc Building Simulator, where the simulation itself is not graphically intensive, a stronger GPU would likely allow the CPU to shine, but the Arc B370's integrated nature prevents that.

Resolution Scaling

The measured FPS data reveals a clear pattern of resolution scaling that points directly at the GPU as the limiting factor. From 1080p to 1440p, the average FPS drops by roughly 37-45% across all settings. From 1440p to 4K, the drop accelerates, with an additional 47-50% reduction. This nonlinear scaling is characteristic of a GPU that runs out of memory bandwidth and shading throughput as pixel count increases.

At Low settings, the progression is 113 FPS (1080p), 71 FPS (1440p), and 37 FPS (4K). The 1080p to 1440p drop is 42 FPS (37% reduction), and the 1440p to 4K drop is 34 FPS (48% reduction). At High settings, the numbers are 56 FPS, 36 FPS, and 19 FPS, representing drops of 36% and 47% respectively. Ultra settings show 54 FPS, 34 FPS, and 18 FPS, with drops of 37% and 47%.

The fact that the FPS halves when moving from 1440p to 4K at every setting suggests the GPU is hitting a hard memory bandwidth ceiling. The system-shared memory configuration means the Arc B370 cannot access dedicated VRAM, and at 4K the texture and framebuffer demands exceed what the shared bus can deliver. The CPU's 83.2 GB/s memory bandwidth is theoretically available, but the GPU must share it with the processor, and the 25 W TDP limits how aggressively the GPU can clock or manage memory requests. The result is a severe performance cliff that makes 4K unplayable in all settings.

Measured FPS Breakdown

The full FPS table for this combo is as follows:

1920x1080 (1080p):

• Low: 113 FPS average
• Medium: 80 FPS average, with a minimum of 68 FPS and maximum of 92 FPS
• High: 56 FPS average
• Ultra: 54 FPS average

2560x1440 (1440p):

• Low: 71 FPS average
• Medium: 50 FPS average, with a minimum of 43 FPS and maximum of 58 FPS
• High: 36 FPS average
• Ultra: 34 FPS average

3840x2160 (4K):

• Low: 37 FPS average
• Medium: 26 FPS average, with a minimum of 22 FPS and maximum of 30 FPS
• High: 19 FPS average
• Ultra: 18 FPS average

The Medium settings rows include min/max data, which provides insight into frame consistency. At 1080p Medium, the 68-92 FPS range indicates a 24 FPS spread, which is tolerable for a simulation game. At 1440p Medium, the 43-58 FPS range tightens to a 15 FPS spread, but the average drops to 50 FPS. At 4K Medium, the 22-30 FPS range is a 8 FPS spread, but the average of 26 FPS is below playable thresholds.

Comparing Low to Ultra at each resolution: at 1080p, Low (113 FPS) is 2.09x faster than Ultra (54 FPS). At 1440p, Low (71 FPS) is 2.09x faster than Ultra (34 FPS). At 4K, Low (37 FPS) is 2.06x faster than Ultra (18 FPS). This consistent ~2x ratio across resolutions indicates that the settings scaling is uniform, but the absolute performance is so low at 4K that even Low is unplayable.

The gap between Medium and High is smaller than between Low and Medium. At 1080p, Medium is 80 FPS and High is 56 FPS, a 24 FPS difference. At 1440p, Medium is 50 FPS and High is 36 FPS, a 14 FPS difference. At 4K, Medium is 26 FPS and High is 19 FPS, a 7 FPS difference. This suggests that the incremental settings between Medium and High add visual detail without a proportional performance cost, but the base performance is too low at higher resolutions to benefit.

Settings Recommendations

Based on the measured FPS data, the only settings that deliver a consistently smooth experience are at 1080p. At 1080p Low, the system achieves 113 FPS, which is well above the 60 FPS threshold for fluid gameplay. This is the recommended configuration for users who prioritize frame rate and responsiveness. The simulation nature of Pc Building Simulator benefits from high FPS for smooth camera movement and UI interaction.

For users who want better visual quality without sacrificing too much performance, 1080p Medium at 80 FPS is the best compromise. The minimum of 68 FPS ensures that even in complex scenes, the frame rate stays above 60. The 68-92 FPS range shows some variance, but it remains playable. 1080p High at 56 FPS is borderline; it averages below 60, which may cause perceptible stutter in a game that involves frequent camera changes while building.

At 1440p, the situation is more constrained. Low settings at 71 FPS is playable, but Medium at 50 FPS is marginal. The 43 FPS minimum at 1440p Medium means the system will dip below 45 FPS in demanding scenes, which is noticeable. 1440p High (36 FPS) and Ultra (34 FPS) are not recommended as they fall below the 40 FPS threshold that many players consider the minimum for a playable experience.

4K is entirely unplayable across all settings. The highest 4K result is Low at 37 FPS, which is below the 40 FPS minimum, and Ultra at 18 FPS is a slideshow. The data indicates that this combo should not be used at 4K for any setting.

The best experience per the measured rows is 1080p Medium. It provides 80 FPS average, which is 27 FPS more than High, while the visual improvement from Low to Medium is worth the 33 FPS cost. The minimum of 68 FPS guarantees a smooth experience, and the maximum of 92 FPS shows there is headroom. For users with a 60 Hz display, 1080p High at 56 FPS is acceptable, but the 1080p Medium setting offers a more consistent frame rate that better matches the simulation's need for stable performance.