Pc Building Simulator

Pc Building Simulator is a simulation title that scales unusually well with high-end hardware, and the AMD Ryzen 9 8945HX paired with the NVIDIA GeForce RTX 5090 Mobile produces a dataset that reveals a clear performance hierarchy. The measured FPS values across three resolutions and four settings presets show a system that is heavily GPU-bound at 4K but becomes increasingly CPU-limited at 1080p, with the data indicating a strong balance of components for this specific workload.

Resolution Scaling

The FPS drop from 1080p to 4K is significant and follows a predictable pattern across all settings presets, though the magnitude varies with the graphical load. At Low settings, the average FPS falls from 386 at 1920x1080 to 244 at 2560x1440, a reduction of 142 FPS, and then down to 127 at 3840x2160, marking another 117 FPS loss. This represents a 67.1% decrease from 1080p to 4K in the Low preset, which indicates that even at the lowest graphical load, the rendering resolution imposes a heavy burden on the GPU. The scaling is steeper in percentage terms when moving from 1440p to 4K, where the Low preset loses 48.0% of its performance, compared to a 36.8% loss when moving from 1080p to 1440p.

At Medium settings, the same pattern emerges with more moderate absolute numbers. The average FPS drops from 274 at 1080p to 173 at 1440p, a 36.9% reduction, and then to 90 at 4K, another 48.0% drop. The High preset shows 193 FPS at 1080p, 122 at 1440p, and 64 at 4K, representing 36.8% and 47.5% drops respectively. The Ultra preset follows suit with 184, 116, and 61 FPS at 1080p, 1440p, and 4K, showing similar percentage losses of 37.0% and 47.4%. These percentage trends across presets are remarkably consistent, suggesting that the resolution scaling is primarily dictated by the pixel count rather than the specific graphics settings.

The data indicates that the limiting component shifts with resolution. At 4K, the RTX 5090 Mobile with its 24 GB of GDDR7 memory and 896.0 GB/s bandwidth is clearly the bottleneck, as the FPS values across all settings are tightly clustered—ranging from 61 FPS at Ultra to 127 FPS at Low—showing that the GPU's compute throughput is the primary constraint. At 1080p, however, the spread widens dramatically, from 184 FPS at Ultra to 386 FPS at Low, suggesting that the CPU's ability to feed the GPU becomes a factor. The Ryzen 9 8945HX with 16 cores and 32 threads can deliver exceptionally high frame rates, but the data implies diminishing returns as settings are lowered at 1080p, pointing to a more balanced load between the two components.

FAQ

Q: What is the maximum average FPS achievable in this game with this hardware combination?

A: The highest measured average FPS is 386, recorded at 1920x1080 resolution with Low settings. This is the only configuration that breaks the 300 FPS barrier, with the next closest being 274 FPS at 1080p Medium and 244 FPS at 1440p Low.

Q: How does the RTX 5090 Mobile compare to its nearest rival in raw GPU compute performance?

A: The RTX 5090 Mobile has an average benchmark score of 45152, which places it 0.8% ahead of the NVIDIA GeForce RTX 4070 Ti (score 44795) and 1.8% ahead of the NVIDIA RTX 5880 Ada Generation (score 45972, deltaPct -1.8). It sits 0.5% behind the AMD Radeon Pro 5500 XT (score 45384) and 1.0% behind the Intel Arc A730M (score 45592).

Q: Is the Ryzen 9 8945HX a top-tier CPU in general benchmarks?

A: Yes, the processor ranks in the 95th percentile of all CPUs tested, with an average benchmark score of 76212. It is effectively tied with the Intel Core Ultra 9 285HX (score 76155, deltaPct 0.1) and sits 0.6% ahead of the AMD Ryzen 9 9950X3D (score 75779), while trailing the AMD EPYC Embedded 8224P and AMD Ryzen Threadripper PRO 9945WX by 0.4% each.

Q: What is the performance difference between the Ultra and Low presets at 4K resolution?

A: At 3840x2160, the Ultra preset yields an average of 61 FPS, while the Low preset produces 127 FPS. This represents a 108.2% performance increase when switching from Ultra to Low, showing that graphics settings have a substantial impact at this resolution.

Q: Does the game show any signs of CPU limitation at lower resolutions?

A: Yes, the data suggests CPU involvement becomes relevant at 1080p. The FPS spread between Low (386) and Ultra (184) at 1080p is 202 FPS, whereas at 4K the spread is only 66 FPS (127 Low vs 61 Ultra). The narrowing at higher resolutions indicates the GPU becomes the sole bottleneck, while at 1080p the CPU's frame delivery capacity is more likely to be approached.

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

A: The combo ranks 722nd out of 3723 total combinations tested for Pc Building Simulator, which places it in the top 19.4% of all systems in the database for this specific title.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread processor based on the Zen 4 architecture, codenamed Dragon Range, running on the AMD Socket FL1 platform. Its base clock of 2.50 GHz can boost up to 5.40 GHz, and the chip is manufactured on TSMC's 5 nm process with 13,140 million transistors across two 71 mm² dies. The cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and a total of 64 MB of L3 cache, which provides ample fast memory for the simulation's logical calculations. The CPU supports DDR5 memory in a dual-channel configuration with a bandwidth of 83.2 GB/s, which is sufficient for feeding the RTX 5090 Mobile's high frame output.

In general benchmarks, the Ryzen 9 8945HX demonstrates excellent multi-threaded performance with scores of 42,713 in Cinebench R23 multi-core and 17,939 in Cinebench R20 multi-core. Single-threaded performance is also strong, with 6,030 in Cinebench R23 single-core and 2,532 in Cinebench R20 single-core. The PassMark suite shows a multithread score of 51,405 and a single-thread score of 3,907, with particular strength in integer math (195,180) and floating-point math (117,453). These scores place the CPU in the 95th percentile of all processors, with an average benchmark score of 76,212, essentially tied with the Intel Core Ultra 9 285HX.

For Pc Building Simulator, the CPU's role appears to be significant at lower resolutions. At 1080p, the difference between Low and Ultra settings is 202 FPS, which suggests that the CPU can deliver enough frames to make the graphics settings the primary differentiator. However, the fact that even at Low settings the average does not exceed 386 FPS indicates that the CPU's frame generation capability, while high, has a ceiling. The boost clock of 5.40 GHz is likely leveraged in this simulation, which involves real-time calculations for component compatibility and system building logic. The data does not show min FPS values for the Low and Ultra presets at any resolution, but the Medium preset min FPS values (233 at 1080p, 147 at 1440p, 77 at 4K) suggest that frame pacing remains consistent even under load.

How This Combo Ranks

Within the database of tested system configurations for Pc Building Simulator, this AMD Ryzen 9 8945HX + NVIDIA GeForce RTX 5090 Mobile combination achieves a rank of 722 out of 3,723 total combos. This places the system in the upper 19.4% of all tested configurations, which is a strong showing but not a top-tier position. The ranking indicates that many other combinations, likely including desktop CPUs with higher sustained clocks and desktop GPUs with larger power budgets, outperform this mobile setup in this particular game.

The rank is somewhat surprising given the hardware's individual performance. The RTX 5090 Mobile's 30,034 PassMark G3D score and the Ryzen 9 8945HX's 95th percentile CPU ranking would suggest a higher overall position. However, Pc Building Simulator is a simulation game that may not fully utilize the GPU's capabilities, particularly at lower resolutions where the CPU becomes more important. The combo's rank of 722 suggests that while the hardware is capable, the game's engine may not be optimized to extract maximum performance from this specific combination, or that other combos with more aggressive power delivery achieve higher frame rates.

The measured FPS data supports this interpretation. At 4K Ultra, the system delivers 61 FPS, which is playable but not exceptional. At 1080p Low, the 386 FPS average is impressive, but the data shows that the GPU is not the limiting factor at that resolution. The rank of 722 out of 3723 indicates that the system is solidly above average, but the specific characteristics of this game—which may rely more on CPU logic than GPU rendering—mean that the RTX 5090 Mobile's raw power is not fully showcased. The percentile ranking versus all GPUs (84th) and all CPUs (95th) suggests that the CPU is relatively stronger than the GPU in this pairing, which aligns with the game's simulation nature.

Measured FPS Breakdown

At 1920x1080, the measured average FPS values are as follows: Low settings produce a remarkable 386 FPS, Medium settings yield 274 FPS (with min 233 and max 315), High settings deliver 193 FPS, and Ultra settings produce 184 FPS. The gap between Low and Ultra is 202 FPS, representing a 52.3% reduction from Low to Ultra. The Medium preset shows a 29.0% drop from Low, while High shows a 50.0% drop from Low, and Ultra shows a 52.3% drop.

Moving to 2560x1440, the average FPS values decrease predictably: Low settings deliver 244 FPS, Medium settings produce 173 FPS (min 147, max 199), High settings yield 122 FPS, and Ultra settings achieve 116 FPS. The percentage drops from Low are 29.1% for Medium, 50.0% for High, and 52.5% for Ultra, which closely mirrors the 1080p scaling pattern. The absolute drop from 1080p to 1440p is 142 FPS for Low, 101 FPS for Medium, 71 FPS for High, and 68 FPS for Ultra.

At 3840x2160, the 4K results show the GPU's workload increasing substantially: Low settings average 127 FPS, Medium settings produce 90 FPS (min 77, max 104), High settings yield 64 FPS, and Ultra settings achieve 61 FPS. The percentage drops from Low are 29.1% for Medium, 49.6% for High, and 52.0% for Ultra. The drop from 1440p to 4K is 117 FPS for Low, 83 FPS for Medium, 58 FPS for High, and 55 FPS for Ultra. The data shows a consistent pattern where the difference between High and Ultra is minimal (3 FPS at 4K, 6 FPS at 1440p, 9 FPS at 1080p), indicating that the Ultra preset adds little graphical overhead beyond High in this game.

Settings Recommendations

The measured data provides clear guidance on the optimal settings for different resolution targets. For a 60 FPS experience at 4K, the Ultra preset delivers 61 FPS and the High preset delivers 64 FPS, both meeting this threshold. However, the Medium preset at 4K produces 90 FPS, which offers a more comfortable margin above 60 FPS and includes min FPS data of 77, ensuring better frame pacing. Given that the difference between High and Ultra is only 3 FPS at 4K, but Medium is 26 FPS higher than High, the Medium preset appears to be the sweet spot for 4K gaming on this system.

At 1440p, all presets exceed 60 FPS, with the lowest being Ultra at 116 FPS. The High preset at 122 FPS is only 6 FPS higher than Ultra, while Medium at 173 FPS offers a substantial 51 FPS advantage over High. For users with a 144 Hz display, the Medium preset at 173 FPS is the only configuration that consistently exceeds this refresh rate, while High and Ultra are better suited for 120 Hz displays. The Low preset at 244 FPS is overkill for most displays but demonstrates the headroom available.

For 1080p gaming, the data shows that even Ultra settings at 184 FPS exceed the refresh rate of most monitors. The High preset at 193 FPS offers nearly identical performance to Ultra, with only a 9 FPS difference. Medium at 274 FPS is the best choice for high-refresh-rate displays (240 Hz or above), while Low at 386 FPS is only relevant for esports-style competitive play where maximum frame rate is prioritized over visual fidelity. The min FPS values for Medium at 1080p (233) indicate that even the lowest frames remain well above 200 FPS, providing a consistently smooth experience. The data suggests that Medium settings at 1080p or 1440p provide the best balance of visual quality and performance, while Medium at 4K is the recommended preset for that resolution.

GPU Role

The NVIDIA GeForce RTX 5090 Mobile is the primary rendering component in this system, built on the Blackwell 2.0 architecture using the GB203 chip manufactured on a 5 nm process. The GPU contains 10,496 shading units, 328 texture mapping units, and 112 raster operation processors, along with 82 ray tracing cores and 328 tensor cores. Its base clock of 990 MHz boosts to 1,515 MHz, and the memory operates at 1,750 MHz with an effective data rate of 28 Gbps. The 24 GB of GDDR7 memory on a 256-bit bus provides a bandwidth of 896.0 GB/s, which is substantial for a mobile GPU and contributes to the high frame rates observed in the 4K benchmarks.

In synthetic benchmarks, the RTX 5090 Mobile achieves a PassMark G3D score of 30,034 and a GPU compute score of 13,401. The Geekbench results show 201,834 in OpenCL and 198,405 in Vulkan, while 3DMark Steel Nomad DX12 yields a score of 5,871. The GPU's average benchmark score of 45,152 places it in the 84th percentile of all GPUs, with the nearest rival being the AMD Radeon Pro 5500 XT at 45,384 (0.5% higher). It is 0.8% faster than the NVIDIA GeForce RTX 4070 Ti and 1.8% faster than the NVIDIA RTX 5880 Ada Generation, though it trails the Intel Arc A730M by 1.0%.

The GPU's role in Pc Building Simulator is clearly dominant at higher resolutions. At 4K, the difference between Low and Ultra settings is only 66 FPS, indicating that the GPU's rendering throughput is the main constraint. The 24 GB VRAM capacity ensures that even at 4K Ultra, memory is not a limiting factor, as the game's textures and assets fit comfortably within this allocation. The 896.0 GB/s bandwidth allows for efficient data transfer, which is evident in the 4K Medium preset's min FPS of 77, showing stable performance. At 1080p, the GPU still delivers 386 FPS at Low settings, but the smaller resolution means the GPU is underutilized, and the CPU's frame delivery becomes the bottleneck. The data suggests that this mobile GPU is well-matched for 4K gaming in this simulation title, but at lower resolutions, it has significant headroom that the CPU cannot fully exploit.