Pc Building Simulator

# Pc Building Simulator — AMD Ryzen 9 8945HX + NVIDIA GeForce RTX 4090

This combination of the AMD Ryzen 9 8945HX mobile processor and the NVIDIA GeForce RTX 4090 laptop GPU delivers exceptional performance in Pc Building Simulator, placing 598th out of 3,002 tested combos. The data shows a system capable of handling even the most demanding settings at 4K resolution, though the benchmark results reveal interesting scaling patterns across resolutions and presets that point to a balanced but CPU-leaning bottleneck at lower resolutions.

Settings Recommendations

The measured FPS data for this combo in Pc Building Simulator shows that the Ultra preset provides the most visually demanding experience while still maintaining playable frame rates across all resolutions. At 3840x2160 Ultra, the average FPS is 58, which sits right at the edge of smooth gameplay for many users. Moving down to 2560x1440 Ultra yields 111 average FPS, and at 1920x1080 Ultra the system delivers 176 average FPS. These numbers indicate that Ultra is viable at every resolution, though the 4K result may feel slightly less fluid than lower presets.

For users prioritizing maximum frame rates, the Low preset delivers extraordinary performance: 370 average FPS at 1080p, 233 at 1440p, and 122 at 4K. The jump from Low to Medium is substantial — at 1080p, Medium produces 262 average FPS compared to Low's 370, a difference of 108 FPS. At 1440p, Medium drops to 165 average FPS, and at 4K it falls to 86. The Medium preset also provides min/max data across all resolutions, with 1080p showing 222 to 301 FPS, 1440p showing 140 to 190, and 4K showing 73 to 99.

The High preset sits between Medium and Ultra in performance. At 1080p, High averages 185 FPS, at 1440p it averages 117, and at 4K it averages 61. The gap between High and Ultra is relatively modest at each resolution — 9 FPS at 1080p, 6 FPS at 1440p, and 3 FPS at 4K. This suggests that Ultra's additional visual features come at a surprisingly small performance cost compared to High.

The best experience per the measured rows depends on the user's display. For 1080p and 1440p displays, the Ultra preset is clearly the best choice, delivering 176 and 111 average FPS respectively — both well above the 60 FPS threshold. For a 4K display, the Medium preset at 86 average FPS offers a better balance than Ultra's 58 FPS, especially considering the min FPS of 73 on Medium versus no recorded min on Ultra. The data indicates that Medium at 4K provides a more consistent experience than Ultra, which may dip below 60 FPS during demanding scenes.

GPU Role

The NVIDIA GeForce RTX 4090 in this configuration brings 24 GB of GDDR6X memory on a 384-bit bus, delivering 1.01 TB/s of bandwidth. The GPU's base clock is 2235 MHz with a boost clock of 2520 MHz, and memory runs at 1313 MHz (21 Gbps effective). This mobile RTX 4090 is built on the AD102 chip with Ada Lovelace architecture, featuring 16,384 shading units, 512 texture mapping units, and 176 ROPs. The GPU also includes 128 ray tracing cores and 512 tensor cores, supporting DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

In Pc Building Simulator, the GPU's role becomes evident when examining frame rates across settings. At 4K resolution, the GPU is clearly the primary driver of performance. The difference between Low (122 FPS) and Ultra (58 FPS) at 4K is 64 FPS, demonstrating that the GPU's rendering workload scales heavily with visual fidelity. The GPU's 24 GB VRAM is more than sufficient for this simulation game, and the 1.01 TB/s bandwidth ensures texture streaming and asset loading are unlikely to cause bottlenecks.

The GPU's benchmark results show a passmark G3D score of 38,194 and a passmark GPU compute score of 26,613. In 3DMark Steel Nomad DX12, it scores 9,223. These synthetic scores position the GPU at the 88th percentile among all GPUs. Interestingly, the nearest rivals by average benchmark score include the Intel Arc Pro A60 (0% delta), AMD Radeon Pro Vega 48 (0.3% delta), and AMD Radeon PRO V710 (2.9% delta) — though these comparisons are based on aggregate benchmark scores rather than game-specific performance.

How This Combo Ranks

The combo ranks 598th out of 3,002 tested combinations in Pc Building Simulator, placing it in the top 20% of all tested systems. This ranking reflects the balance between the Ryzen 9 8945HX and RTX 4090 in this specific game. The CPU's percentile rank against all CPUs is 95, while the GPU sits at the 88th percentile, suggesting the processor is relatively stronger than the graphics card when compared to their respective pools.

The CPU's nearest rivals in aggregate benchmark scores include the Intel Core Ultra 9 285HX with a delta of 0.1%, the AMD EPYC Embedded 8224P at -0.4%, the AMD Ryzen Threadripper PRO 9945WX at -0.4%, and the AMD Ryzen 9 9950X3D at 0.6%. These extremely small deltas indicate that the Ryzen 9 8945HX is performance-competitive with top-tier desktop and mobile processors in synthetic workloads.

For the GPU, the nearest rivals show a different picture. The Intel Arc Pro A60 matches the RTX 4090's average score within 0%, while the AMD Radeon Pro Vega 48 is 0.3% higher and the AMD Radeon Pro W6600M is 2.5% higher. The AMD Radeon PRO V710 trails by 2.9%. These are professional workstation GPUs, and the aggregate benchmark scores place them in a similar range, though game performance in Pc Building Simulator may differ substantially from these synthetic averages.

FAQ

Q: Can this combo run Pc Building Simulator at 4K Ultra settings?

A: Yes, but with caveats. The measured average FPS at 3840x2160 Ultra is 58, which is playable but close to the 60 FPS threshold. The Medium preset at 4K provides a more comfortable 86 average FPS with a recorded minimum of 73 FPS.

Q: How much performance is lost when moving from 1080p to 4K?

A: At Ultra settings, the average FPS drops from 176 at 1920x1080 to 58 at 3840x2160, a decrease of 118 FPS (67%). At Low settings, the drop is from 370 to 122, a decrease of 248 FPS (67%). The percentage drop is remarkably consistent across presets.

Q: What is the best preset for a 1440p monitor?

A: The Ultra preset at 2560x1440 delivers 111 average FPS, which is well above 60 FPS and provides the highest visual quality. The High preset at 117 average FPS is nearly identical in performance, but Ultra offers more visual features for only 6 FPS less.

Q: Is the CPU or GPU the limiting factor in this game?

A: The data suggests the GPU becomes the primary limiter at 4K, where FPS scales significantly with settings. At 1080p, the CPU plays a larger role, as evidenced by the massive FPS numbers (370 at Low) that approach the limits of what the processor can feed to the GPU.

Q: How does this combo compare to the top 10% of tested systems?

A: This combo ranks 598th out of 3,002 tested combinations, placing it in the top 19.9% of all tested systems. The CPU's 95th percentile ranking is notably higher than the GPU's 88th percentile.

Q: Does the RTX 4090's 24 GB VRAM provide any advantage in this game?

A: The 24 GB GDDR6X memory with 1.01 TB/s bandwidth is far more than Pc Building Simulator requires. Even at 4K Ultra, there are no indications of VRAM limitations in the measured data, as FPS drops between settings are consistent with rendering workload rather than memory capacity constraints.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals important information about system bottlenecks. At Low settings, the system produces 370 average FPS at 1080p, 233 at 1440p, and 122 at 4K. The scaling factor from 1080p to 1440p is 0.63, and from 1080p to 4K is 0.33. This means that doubling the pixel count from 1080p to 1440p reduces performance by roughly 37%, and quadrupling to 4K reduces performance by about 67%.

At Ultra settings, the scaling is similar: 176 FPS at 1080p, 111 at 1440p (0.63 scaling), and 58 at 4K (0.33 scaling). The consistency of these scaling factors across all presets indicates that the performance drop is primarily resolution-driven rather than settings-driven. This pattern suggests that the CPU is not the limiting factor at lower resolutions — if it were, the scaling from 1080p to 1440p would show a smaller percentage drop than from 1440p to 4K, as the CPU would cap FPS at 1080p.

The fact that 1080p Low produces 370 FPS while 1080p Ultra produces 176 FPS (a 2.1x difference) shows that the GPU is still doing significant work even at 1080p. However, the 370 FPS figure at Low suggests the CPU can feed the GPU at very high rates, making this combo well-balanced for a simulation game that may involve complex physics and AI calculations alongside rendering.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread mobile processor from the 8000 series, based on Zen 4 architecture (Dragon Range codename) on a 5 nm TSMC process. It has a base clock of 2.50 GHz and a boost clock of 5.40 GHz, with a TDP of 55 W. The CPU features 64 MB of L3 cache, 1 MB of L2 per core, and 64 KB of L1 per core. It supports DDR5 memory on a dual-channel bus with 83.2 GB/s bandwidth and connects via PCIe Gen 5 with 28 lanes.

In synthetic benchmarks, the CPU scores 42,713 in Cinebench R23 multi-core and 6,030 in single-core. Cinebench R20 results show 17,939 multi-core and 2,532 single-core. Passmark tests show a multithread score of 51,405, single-thread of 3,907, integer math at 195,180, floating point math at 117,453, and data encryption at 40,836. The CPU's average benchmark score is 76,212, placing it at the 95th percentile among all CPUs.

In Pc Building Simulator, the CPU's role is most evident at 1080p Low settings, where the system achieves 370 average FPS. This high frame rate indicates the CPU can maintain very high simulation rates. The 16 cores and 32 threads provide ample parallel processing for simulation workloads, while the 5.40 GHz boost clock ensures responsive single-thread performance for game logic. The 64 MB L3 cache helps keep frequently accessed simulation data close to the cores, reducing memory latency.

The CPU's nearest rival, the Intel Core Ultra 9 285HX, has an average score that is only 0.1% different, indicating these two processors are nearly identical in overall synthetic performance. The AMD Ryzen 9 9950X3D is 0.6% higher, while the EPYC Embedded 8224P and Threadripper PRO 9945WX are both 0.4% lower. These tight margins suggest that CPU choice has minimal impact on Pc Building Simulator performance at higher resolutions, where the GPU dominates.

Measured FPS Breakdown

1920x1080 (1080p):

• Low: 370 average FPS
• Medium: 262 average FPS (min 222, max 301)
• High: 185 average FPS
• Ultra: 176 average FPS

At 1080p, the system delivers exceptional performance across all settings. The gap between Low and Medium is 108 FPS, while the gap between Medium and High is 77 FPS. The difference between High and Ultra is just 9 FPS, suggesting that Ultra's additional features are relatively inexpensive at this resolution.

2560x1440 (1440p):

• Low: 233 average FPS
• Medium: 165 average FPS (min 140, max 190)
• High: 117 average FPS
• Ultra: 111 average FPS

At 1440p, the frame rates remain highly playable. The Low to Medium drop is 68 FPS, Medium to High is 48 FPS, and High to Ultra is 6 FPS. The min FPS of 140 at Medium ensures smooth gameplay even in demanding scenes.

3840x2160 (4K):

• Low: 122 average FPS
• Medium: 86 average FPS (min 73, max 99)
• High: 61 average FPS
• Ultra: 58 average FPS

At 4K, the system remains capable of 60+ FPS at Medium settings, with a minimum of 73 FPS. High and Ultra both average around 60 FPS, with Ultra at 58. The Low preset at 122 FPS shows the GPU's headroom when visual effects are minimized.

The complete dataset shows that this combo provides a smooth experience at 1080p and 1440p across all presets, while 4K requires Medium or lower for guaranteed 60+ FPS. The min/max data available for Medium settings at each resolution shows consistent frame pacing: 1080p ranges from 222 to 301, 1440p from 140 to 190, and 4K from 73 to 99. These ranges indicate that the system maintains stable performance without significant frame drops, even during complex simulation scenes.