Pc Building Simulator

# Pc Building Simulator with AMD Ryzen 9 8945HX + NVIDIA GeForce RTX 5070

The AMD Ryzen 9 8945HX paired with the NVIDIA GeForce RTX 5070 delivers a broad performance envelope in Pc Building Simulator, ranging from extremely high refresh rate capable at 1080p to merely playable at 4K. This mobile-class CPU combined with a desktop-class GPU shows clear resolution-dependent behavior, with the data indicating that the RTX 5070 becomes the primary constraint as resolution climbs, while the Ryzen 9's 16 cores and 32 threads keep the simulation logic well-fed at lower resolutions.

Resolution Scaling

The measured FPS data reveals a dramatic performance drop as resolution increases from 1920x1080 to 3840x2160, and the pattern is consistent across all four settings presets. At High settings, the average frame rate falls from 131 FPS at 1080p to 83 FPS at 1440p, then further down to 43 FPS at 4K. That represents a 67% reduction from 1080p to 4K at High settings, which strongly indicates that the GPU is the limiting component at higher resolutions. The RTX 5070's 12 GB of GDDR7 memory and 672.0 GB/s bandwidth are being pushed hard at 4K, and the data shows the frame rate roughly halves from 1440p to 4K at High settings.

The Low settings preset shows an even more extreme scaling curve. At 1080p Low, the combo achieves 262 FPS average, which drops to 165 FPS at 1440p and then to 86 FPS at 4K. The 4K figure is still quite playable, but the scaling from 1440p to 4K shows a 48% reduction, suggesting that even at Low settings the GPU is the bottleneck at 4K. Interestingly, the 1080p to 1440p drop at Low settings is only 37%, which is less severe than the High settings drop of 37% as well — though the absolute numbers are much higher at Low.

Looking at Medium settings, the only preset with min and max FPS data, we can see the scaling pattern more clearly. At 1080p Medium, the average is 186 FPS with a minimum of 158 FPS and maximum of 214 FPS. Moving to 1440p Medium drops the average to 117 FPS with a range of 100 to 135 FPS. At 4K Medium, the average falls to 61 FPS with a minimum of 52 FPS and maximum of 70 FPS. The 1080p to 4K reduction is 67%, nearly identical to the High settings scaling, which reinforces that resolution scaling is consistent regardless of preset.

Ultra settings show the heaviest load. At 1080p Ultra, the average is 125 FPS, at 1440p it is 79 FPS, and at 4K it drops to 41 FPS. The 1080p to 4K reduction here is 67% as well — the same proportional drop. This consistency across all four presets tells a clear story: the RTX 5070's performance scales almost linearly with pixel count in this game, and the Ryzen 9 8945HX is not the limiting factor at any resolution tested.

The key takeaway from the resolution scaling is that 4K gaming on this combo is possible but only at Low or Medium settings for a smooth experience. The data shows that 4K Ultra produces an average of just 41 FPS, which falls below the 60 FPS threshold most builders consider smooth. At 4K Medium, the 61 FPS average is right at that threshold, but the measured minimum of 52 FPS means there will be noticeable dips.

Settings Recommendations

Based on the measured rows, the best experience per the data depends heavily on your target resolution and refresh rate. At 1920x1080, even Ultra settings produce 125 FPS average, which is smooth on any standard 60Hz or 144Hz monitor. The data shows that 1080p Ultra at 125 FPS is only 5% slower than 1080p High at 131 FPS, so there is little reason to drop below Ultra at this resolution. The 1080p Medium setting delivers 186 FPS, which would benefit a 165Hz or 240Hz display, but the visual quality trade-off from Ultra to Medium is significant in a game that is largely about visual detail of components.

At 2560x1440, the recommendation shifts. Ultra settings produce 79 FPS average, which is playable but not ideal for high refresh rate displays. High settings at 1440p deliver 83 FPS, a marginal improvement of only 5% over Ultra. Medium settings jump to 117 FPS, which is a 48% improvement over High. For 1440p gaming, the data suggests Medium is the sweet spot if you want to stay above 100 FPS, while High or Ultra are acceptable if you prioritize visual fidelity over frame rate. The 1440p Medium minimum of 100 FPS is particularly notable, as it means the combo never dips below triple digits at this setting.

At 3840x2160, the choices are more constrained. Ultra settings yield just 41 FPS average, which is not smooth by modern standards. High settings at 43 FPS are essentially identical to Ultra, offering no meaningful improvement. Medium settings jump to 61 FPS average with a minimum of 52 FPS, which is the only 4K preset that approaches smooth gameplay. Low settings at 4K produce 86 FPS, which is very playable, but the visual downgrade to Low is substantial. For 4K, the data strongly favors Medium settings as the best balance, with Low as the fallback if you want higher frame rates.

The measured data shows that the RTX 5070 has enough headroom at 1080p to run everything maxed out, but at 4K you must make compromises. The 4K Ultra to 4K Medium difference is 20 FPS (41 to 61), which represents a 49% improvement in frame rate by dropping from Ultra to Medium. That is a significant gain for a single preset step, and it highlights how demanding the Ultra preset is on the GPU at 4K.

How This Combo Ranks

In the database of tested combinations for Pc Building Simulator, this AMD Ryzen 9 8945HX and NVIDIA GeForce RTX 5070 pairing ranks 1612 out of 3002 tested combos. That places it in the 46th percentile among all tested configurations, meaning roughly 54% of tested combos deliver higher average frame rates in this specific game. The rank of 1612 out of 3002 indicates that while this combo is capable, it is not near the top of the performance hierarchy for Pc Building Simulator.

The combo rank reflects the overall measured performance across all resolutions and settings, and the data shows that this pairing is solidly mid-pack. The RTX 5070's percentile versus all GPUs is 82, indicating it outperforms 82% of GPUs in general benchmark averages. However, the CPU's percentile versus all CPUs is 95, showing that the Ryzen 9 8945HX is a top-tier processor. The discrepancy between the CPU's high percentile and the combo's mid-pack rank suggests that the GPU is holding back the overall combo performance in this game.

Looking at the GPU's nearest rivals, the RTX 5070's average benchmark score of 40377 is nearly identical to the AMD Radeon Pro 580 at 40318 (0.1% faster), the AMD Radeon Pro WX 7100 at 40063 (0.8% faster than the RTX 5070), and the AMD Radeon Pro 5300 at 40870 (1.2% slower than the RTX 5070). The NVIDIA RTX A500 Mobile scores 39568, which is 2% slower. These rivals are all professional or mobile workstation cards, which suggests that the RTX 5070's gaming performance in this benchmark database is being compared against a mixed bag of professional GPUs.

The CPU's nearest rivals show a tighter cluster. The Intel Core Ultra 9 285HX scores 76155 on average, which is 0.1% higher than the Ryzen 9 8945HX's 76212. The AMD EPYC Embedded 8224P scores 76492, 0.4% higher. The AMD Ryzen Threadripper PRO 9945WX scores 76513, also 0.4% higher. The AMD Ryzen 9 9950X3D scores 75779, which is 0.6% lower than the 8945HX. These deltas are all within 1%, meaning the Ryzen 9 8945HX is statistically tied with its nearest competitors in general CPU benchmarks.

Measured FPS Breakdown

At 1920x1080, the combo delivers its strongest results. Low settings produce an average of 262 FPS, which is the highest measured frame rate in the entire dataset. Medium settings average 186 FPS with a minimum of 158 FPS and maximum of 214 FPS. High settings average 131 FPS, and Ultra settings average 125 FPS. The spread from Low to Ultra at 1080p is 137 FPS, meaning Ultra delivers just 48% of the frame rate of Low. For a 144Hz monitor, every preset except Ultra provides headroom above the refresh rate, and even Ultra at 125 FPS is close enough that most players would not notice a difference.

At 2560x1440, the frame rates remain strong but show the expected decline. Low settings average 165 FPS, which is 37% lower than the 1080p Low figure. Medium settings average 117 FPS with a minimum of 100 FPS and maximum of 135 FPS. High settings average 83 FPS, and Ultra settings average 79 FPS. The 1440p Ultra figure of 79 FPS is just above the 60 FPS threshold, making it acceptable for standard refresh rate monitors but not ideal for high refresh rate displays. The 1440p Medium minimum of 100 FPS is noteworthy because it means the combo maintains triple-digit frame rates even in demanding scenes.

At 3840x2160, the performance drops significantly. Low settings average 86 FPS, which is the only 4K preset that exceeds 60 FPS by a comfortable margin. Medium settings average 61 FPS with a minimum of 52 FPS and maximum of 70 FPS. High settings average 43 FPS, and Ultra settings average 41 FPS. The 4K data shows that the RTX 5070 is stressed at this resolution, with the Ultra and High presets both falling well below 60 FPS. The Medium preset's 61 FPS average is right at the threshold, but the 52 FPS minimum indicates that some scenes will dip below 60 FPS.

The measured FPS data shows consistent behavior across resolutions. The Medium preset is the only one with min and max data at all three resolutions, and the patterns are informative. At 1080p Medium, the min is 158 and max is 214, giving a range of 56 FPS. At 1440p Medium, the min is 100 and max is 135, a range of 35 FPS. At 4K Medium, the min is 52 and max is 70, a range of 18 FPS. The narrowing range at higher resolutions suggests that the GPU is becoming the limiting factor, as the frame time variance decreases when the GPU is saturated.

GPU Role

The NVIDIA GeForce RTX 5070 is built on the Blackwell 2.0 architecture with a GB205 chip manufactured on TSMC's 5 nm process. The GPU contains 31,100 million transistors on a 263 mm² die, giving it a transistor density of 118.3M per mm². The GPU has 6144 shading units, 192 texture mapping units, and 80 raster output pipelines. It also includes 48 RT cores and 192 tensor cores, which are relevant for ray tracing and AI-accelerated features, though Pc Building Simulator is not a graphically intensive title that heavily uses these features.

The RTX 5070 operates at a base clock of 2325 MHz and a boost clock of 2512 MHz. The memory runs at 1750 MHz with 28 Gbps effective speed across a 192-bit bus, producing 672.0 GB/s of bandwidth. The 12 GB of GDDR7 memory is sufficient for Pc Building Simulator at 4K, as the game's simulation-focused graphics do not require large texture pools. The pixel rate is 201.0 GPixel/s and the texture rate is 482.3 GTexel/s, with FP32 performance rated at 30.87 TFLOPS.

The GPU's benchmark results show a passmark G3D score of 29137, which places it in the 82nd percentile versus all GPUs. The passmark DirectX 12 score is 108, while DirectX 11 scores 277 and DirectX 10 scores 180. The DirectX 9 score is 320. The Geekbench OpenCL score is 172660 and Vulkan is 178923. The passmark GPU compute score is 15787. These numbers indicate that the RTX 5070 is a strong performer overall, but its 82nd percentile rank means there are many faster GPUs in the database.

In Pc Building Simulator specifically, the GPU's role becomes increasingly important as resolution rises. The data shows that at 1080p, the CPU has enough headroom that even the Ultra preset runs at 125 FPS, suggesting the GPU is not fully saturated. At 4K, however, the GPU is clearly the bottleneck, as evidenced by the sharp decline in frame rates and the narrowing of the min-max range at Medium settings. The RTX 5070's 12 GB of VRAM is not a limiting factor in this game, as the simulation does not require massive texture memory, but the raw compute throughput at 4K is insufficient to maintain high frame rates on the Ultra preset.

CPU Role

The AMD Ryzen 9 8945HX is a mobile processor from the 8000 series, built on the Zen 4 architecture with the Dragon Range codename. It features 16 cores and 32 threads, running at a base clock of 2.50 GHz and a boost clock of 5.40 GHz. The CPU has a 55 W TDP and uses the AMD Socket FL1. It 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 64 MB of L3 cache total.

The Ryzen 9 8945HX supports DDR5 memory in a dual-channel configuration with 83.2 GB/s of bandwidth. It connects via PCIe Gen 5 with 28 lanes from the CPU. The integrated Radeon 610M graphics are present but not relevant for gaming performance when a discrete GPU like the RTX 5070 is installed. The CPU has an unlocked multiplier, making it overclockable, and it was released in April 2025 with a production status of Active.

The CPU's benchmark results are impressive for a mobile part. The Cinebench R15 multicore score is 4305 and singlecore is 607. Cinebench R20 multicore scores 17939 and singlecore 2532. Cinebench R23 multicore reaches 42713 and singlecore 6030. The Passmark multithread score is 51405, single thread is 3907, and the average benchmark score is 76212. The CPU's percentile versus all CPUs is 95, putting it in the top 5% of all processors in the database.

In Pc Building Simulator, the CPU's role is to handle the simulation logic, which includes component compatibility checks, thermal calculations, and system boot sequences. With 16 cores and 32 threads, the Ryzen 9 8945HX has far more processing power than this game requires. The data confirms this — at 1080p Low, the combo achieves 262 FPS, which is likely near the game engine's practical limit. The CPU is not the bottleneck at any resolution tested, as evidenced by the consistent 67% frame rate drop from 1080p to 4K across all presets, which is a purely GPU-driven scaling pattern.

The nearest CPU rivals show that the Ryzen 9 8945HX is competitive with top desktop processors despite being a mobile part. Its average benchmark score of 76212 is within 1% of the Intel Core Ultra 9 285HX, AMD EPYC Embedded 8224P, AMD Ryzen Threadripper PRO 9945WX, and AMD Ryzen 9 9950X3D. This means that in CPU-bound scenarios, this mobile processor performs on par with flagship desktop and server parts, which is remarkable for a 55 W TDP chip. In Pc Building Simulator, however, the game is not CPU-bound at any resolution, so the CPU's performance headroom goes largely unused.