Pc Building Simulator

# Pc Building Simulator: AMD Ryzen 9 8945HX + NVIDIA GeForce RTX 5080 Mobile

Pc Building Simulator, a simulation title that tasks players with assembling and troubleshooting virtual PCs, rarely pushes hardware to its limits, yet this mobile flagship pairing of the AMD Ryzen 9 8945HX and NVIDIA GeForce RTX 5080 Mobile produces a fascinating set of benchmark results. The data reveals a system that is overwhelmingly GPU-bound at lower resolutions, with frame rates scaling dramatically as settings and resolution increase. This analysis breaks down the measured performance across three resolutions and four quality presets, contextualizing the results against the broader combo database.

FAQ

Q: How does this combo rank among all tested CPU-GPU pairings in Pc Building Simulator?

A: The combo ranks 943rd out of 3,723 tested combinations, placing it in the top 25% of all systems in the database for this specific game.

Q: What is the maximum average frame rate achieved in this game?

A: At 1920x1080 with Low settings, the system reaches an average of 362 FPS, which is the highest measured average across all tested configurations.

Q: Does the RTX 5080 Mobile maintain playable frame rates at 4K Ultra?

A: Yes, but barely. At 3840x2160 with Ultra settings, the average FPS drops to 57, which is just below the 60 FPS threshold typically considered smooth for most players.

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

A: The average frame rate drops from 181 FPS at 1920x1080 High to 60 FPS at 3840x2160 High, representing a 67% reduction in performance.

Q: What is the CPU's benchmark percentile among all processors?

A: The AMD Ryzen 9 8945HX scores in the 95th percentile of all CPUs tested, indicating it sits well above the median in overall computing power.

Q: Are there any measured minimum frame rate data points for the lower resolutions?

A: Only the Medium settings presets include min and max FPS data. At 1920x1080 Medium, the min is 218 FPS and max is 295 FPS; at 2560x1440 Medium, the min is 137 FPS and max is 186 FPS.

GPU Role

The NVIDIA GeForce RTX 5080 Mobile is the dominant hardware component in this pairing, and its specifications directly explain the observed frame rate behavior. The GPU features 16 GB of GDDR7 memory on a 256-bit bus, delivering 896.0 GB/s of bandwidth. This memory configuration is substantial for a mobile part, and in a simulation game that involves rendering detailed PC components and workshop environments, it provides ample headroom for texture streaming and scene complexity.

Clock speeds for the RTX 5080 Mobile are listed with a base of 975 MHz and a boost of 1500 MHz. The relatively wide gap between base and boost suggests that thermal and power management will cause the GPU to fluctuate between these states under load. The 80 W TDP is notably modest for a high-end mobile GPU, which likely explains why performance at 4K Ultra (57 FPS) falls just short of the 60 FPS mark. The GPU's 23.04 TFLOPS of FP32 compute and 60 RT cores indicate a capable architecture, but the power envelope constrains sustained peak performance.

In Pc Building Simulator specifically, the GPU's role becomes critical at higher resolutions. The benchmark data shows that at 1080p, the system is essentially CPU-limited or engine-limited, as frame rates exceed 170 FPS even at Ultra settings. However, as resolution increases to 1440p and 4K, the GPU becomes the primary bottleneck. The 16 GB VRAM capacity is more than sufficient for this game's demands, as evidenced by the fact that even at 4K Ultra, the average FPS (57) is only slightly below the 60 FPS target, suggesting memory capacity is not the limiting factor.

The GPU's benchmark scores further contextualize its performance. Its PassMark G3D score of 27,711 and 3DMark Steel Nomad score of 4,952 indicate strong synthetic performance. The GPU sits in the 81st percentile of all GPUs, which is respectable but not elite. This positioning aligns with the measured in-game results, where the GPU delivers high frame rates at mainstream resolutions but struggles to maintain 4K Ultra performance.

Resolution Scaling

The measured FPS data reveals a clear and consistent pattern of performance degradation as resolution increases from 1920x1080 to 3840x2160. At Low settings, the average frame rate drops from 362 FPS at 1080p to 228 FPS at 1440p, then further to 119 FPS at 4K. This represents a 67% reduction from 1080p to 4K, which is a steeper drop than the pixel count increase (4x) would suggest, indicating that the system is transitioning from a CPU-bound state to a GPU-bound state.

At High settings, the scaling is even more pronounced. The average FPS falls from 181 at 1080p to 114 at 1440p (a 37% drop) and then to 60 at 4K (a 47% drop from 1440p). The 4K High result of 60 FPS is exactly at the threshold of smooth gameplay, suggesting that the GPU is working near its maximum capacity at this resolution and setting combination.

Medium settings show similar trends, with averages of 256 FPS at 1080p, 162 FPS at 1440p, and 85 FPS at 4K. The min/max data points for Medium settings provide additional insight. At 1080p, the min FPS is 218 and max is 295, showing a 77 FPS spread. At 1440p, the spread narrows to 49 FPS (137 min, 186 max), and at 4K, the spread is 25 FPS (72 min, 97 max). This tightening of frame time variance at higher resolutions suggests that the GPU is becoming the consistent bottleneck, reducing the impact of CPU-driven frame spikes.

Ultra settings present the most demanding scenario. The average FPS drops from 172 at 1080p to 109 at 1440p (a 37% drop) and then to 57 at 4K (a 48% drop). The fact that 4K Ultra average (57 FPS) is lower than 4K High (60 FPS) by only 3 FPS indicates that the Ultra preset's additional graphical features are not heavily taxing the GPU, or that the game engine's draw calls are becoming the limiting factor.

The scaling pattern strongly implies that the CPU, the AMD Ryzen 9 8945HX with 16 cores and 32 threads, is more than capable of feeding the GPU at lower resolutions but becomes less relevant at 4K. The CPU's 5.40 GHz boost clock and 64 MB of L3 cache provide ample single-threaded performance for a simulation game, which is typically CPU-intensive in logic but not in rendering. At 1080p, the GPU is often idle waiting for CPU instructions, resulting in frame rates above 300 FPS. At 4K, the GPU's pixel throughput becomes the limiting factor.

How This Combo Ranks

The combo's rank of 943 out of 3,723 tested combinations places it in the upper quartile of all systems tested in Pc Building Simulator. This is a strong showing, but not exceptional given the premium nature of the components. The rank suggests that while the RTX 5080 Mobile is a high-end GPU, the game's engine and the CPU's performance ceiling mean that many other combos with similarly powerful GPUs can achieve comparable or better results.

The CPU's nearest rivals provide context for its overall computing performance. The AMD Ryzen 9 8945HX has an average benchmark score of 76,212, which is nearly identical to the Intel Core Ultra 9 285HX (76,155, a 0.1% delta). This places the two mobile flagship CPUs in a statistical tie. The AMD EPYC Embedded 8224P (76,492, -0.4% delta) and AMD Ryzen Threadripper PRO 9945WX (76,513, -0.4% delta) are also within a fraction of a percent, indicating that the 8945HX is firmly in the top tier of processor performance. The AMD Ryzen 9 9950X3D (75,779, 0.6% delta) trails slightly but remains competitive.

The GPU's nearest rivals show a more interesting comparison. The RTX 5080 Mobile has an average benchmark score of 38,349, which is 0.1% higher than the NVIDIA GeForce MX570 (38,299) and 0.6% higher than the NVIDIA GeForce RTX 4080 Mobile (38,135). The inclusion of the MX570, a budget mobile GPU, as a nearest rival is notable, though this is likely due to the specific benchmark weighting used in the database. The RTX 4080 Mobile, the predecessor flagship, is only 0.6% behind, indicating that the 5080 Mobile offers a modest generational improvement. The AMD Radeon Pro 580X (38,706, -0.9% delta) and NVIDIA GeForce MX570 A (38,691, -0.9% delta) round out the rival set.

In the context of Pc Building Simulator, the combo's rank of 943 suggests that while the hardware is powerful, the game may not be optimized to extract maximum performance from such high-end components. The measured frame rates are impressive, but the rank indicates that many other combos achieve similar or better results, likely due to the game being more sensitive to single-threaded CPU performance than to raw GPU compute.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of performance across all resolution and settings combinations. Below is the complete breakdown:

1920x1080:

• Low: Average 362 FPS
• Medium: Average 256 FPS, Min 218, Max 295
• High: Average 181 FPS
• Ultra: Average 172 FPS

2560x1440:

• Low: Average 228 FPS
• Medium: Average 162 FPS, Min 137, Max 186
• High: Average 114 FPS
• Ultra: Average 109 FPS

3840x2160:

• Low: Average 119 FPS
• Medium: Average 85 FPS, Min 72, Max 97
• High: Average 60 FPS
• Ultra: Average 57 FPS

At 1080p Low, the system achieves 362 FPS, which is exceptionally high and indicates that the CPU and GPU are both far from being bottlenecks at this resolution. The jump from Low to Medium at 1080p results in a 29% performance drop (362 to 256 FPS), while the jump from High to Ultra is only 5% (181 to 172 FPS). This suggests that the Ultra preset adds minimal graphical complexity over High at this resolution.

At 1440p, the Low setting still delivers 228 FPS, which is comfortably above the refresh rate of most gaming monitors. The Medium setting at 162 FPS provides a good balance, with min and max values of 137 and 186 FPS respectively, indicating stable frame pacing. The High and Ultra settings at 114 and 109 FPS respectively are nearly identical, with only a 4% difference, suggesting that the Ultra preset's additional features are not particularly demanding in this game.

At 4K, the performance curve becomes more critical. Low settings yield 119 FPS, which is playable on high-refresh-rate 4K displays. Medium settings drop to 85 FPS, with a min of 72 FPS, which remains smooth. High settings produce exactly 60 FPS average, which is the minimum for a good experience on a standard 60 Hz display. Ultra settings fall to 57 FPS, which is below 60 FPS and may be noticeable to sensitive users. The 4K Medium min FPS of 72 and max of 97 show a 25 FPS spread, which is the smallest variance among all Medium settings, confirming that the GPU is consistently the limiting factor at this resolution.

Settings Recommendations

Based on the measured FPS data, the optimal settings for this combo depend on the target display resolution and the user's frame rate preferences.

For 1920x1080 displays, the Ultra preset at 172 FPS is the clear recommendation. The system has more than enough headroom to run the highest quality settings while maintaining frame rates well above 144 Hz, which is the refresh rate of most high-end gaming monitors. Even if a user has a 240 Hz display, the 172 FPS average is within reach, and dropping to High (181 FPS) provides only a marginal 5% improvement. The Medium preset at 256 FPS is unnecessary unless the user has a 360 Hz display, which is a niche product category.

For 2560x1440 displays, the Ultra preset at 109 FPS is recommended for users with 120 Hz or higher refresh rate monitors. The High preset at 114 FPS offers essentially identical performance, so users should choose Ultra if they want the best visual quality without sacrificing playability. For users with 144 Hz monitors, the Medium preset at 162 FPS provides a better match to the refresh rate, and the min FPS of 137 ensures that frame drops will not be noticeable. The Low preset at 228 FPS is overkill for any current display technology and sacrifices visual quality unnecessarily.

For 3840x2160 displays, the decision is more nuanced. The High preset at exactly 60 FPS is the minimum recommendation for a smooth experience on a standard 60 Hz 4K display. The Ultra preset at 57 FPS is borderline, as the 3 FPS drop below 60 may cause occasional micro-stutters on fixed-refresh-rate displays. The Medium preset at 85 FPS is the sweet spot for 4K users who have displays with variable refresh rate (VRR) support, as the min FPS of 72 is well within the VRR range of most modern monitors. The Low preset at 119 FPS is recommended only for users with 120 Hz or higher 4K displays who prioritize frame rate over visual fidelity.

In summary, this combo excels at 1080p and 1440p, where it can run Ultra settings at frame rates exceeding 100 FPS. At 4K, the system is right at the edge of playable performance, with High settings delivering exactly 60 FPS and Medium providing a comfortable margin. For the best overall experience, the data supports using Ultra at 1440p or High at 4K, depending on the user's display and performance priorities.