Pc Building Simulator

Pc Building Simulator presents an unusual benchmark scenario for the AMD Ryzen 5 8400F and AMD Radeon RX 6600 XT pairing, as the simulation genre often taxes components differently than traditional shooters or action titles. The measured FPS data reveals a configuration that scales predictably across resolutions, with the GPU becoming an increasingly dominant factor as pixel count rises. Across the full test suite, this combo delivers playable frame rates at all but the most demanding settings, though the performance envelope narrows considerably at 4K Ultra.

Resolution Scaling

The transition from 1080p to 4K shows a classic GPU-bound trajectory, but with some notable inflection points. At 1080p Low, the system produces 222.9 FPS, which drops to 142.8 FPS at 1440p Low — a 35.9% reduction in frame rate for a 77.8% increase in pixel count. The scaling from 1440p Low to 4K Low is more severe, with 73.6 FPS representing a 48.4% drop from the 1440p figure. This pattern indicates that the RX 6600 XT's 8 GB GDDR6 memory and 256.0 GB/s bandwidth are being pushed hard at higher resolutions, even on Low settings.

When examining Medium settings, the curve steepens further: 162.1 FPS at 1080p, 98.2 FPS at 1440p (a 39.4% drop), and 51.9 FPS at 4K (a 47.2% drop from 1440p). The High preset follows a similar arc, with 110.2 FPS at 1080p, 72.7 FPS at 1440p (34.1% lower), and 38.1 FPS at 4K (47.6% lower). Ultra settings compress the range most dramatically, starting at 104.5 FPS in 1080p, falling to 68.7 FPS in 1440p, and bottoming out at 32.9 FPS in 4K. The gap between 1080p and 1440p Ultra is just 34.3%, while the 1440p-to-4K drop is 52.1% — indicating that the GPU's fill rate and memory subsystem hit a wall near the 4K boundary.

The resolution scaling data suggests that at 1080p and even 1440p, the CPU has enough headroom to feed the GPU adequately, particularly at Low and Medium presets. However, the 4K results, especially at High and Ultra, show the GPU becoming the definitive limiting component, with frame rates halving at each major resolution step.

CPU Role

The AMD Ryzen 5 8400F brings six cores and twelve threads based on the Zen 4 architecture, built on TSMC's 4 nm process. Its base clock of 4.20 GHz and boost clock of 4.70 GHz provide solid single-thread performance, which is reflected in a 3dmark single-thread score of 951 and a passmark single-thread score of 3684. The CPU's 16 MB shared L3 cache and dual-channel DDR5 memory support with 83.2 GB/s bandwidth contribute to its responsiveness in simulation workloads.

In Pc Building Simulator, the CPU's role is most apparent at lower resolutions and settings. At 1080p Low, the system achieves 222.9 FPS, with the 3dmark 16-thread score of 6091 and cinebench R23 multicore score of 20851 indicating that the processor can maintain high throughput when the GPU is not the bottleneck. The CPU's 65 W TDP and 4 nm process node suggest efficient operation, though the benchmark data does not directly measure thermals. The 3dmark 8-thread score of 5275 and max-thread score of 6165 show that scaling beyond eight threads yields diminishing returns, but the 12 threads provide enough parallelism for the game's simulation logic.

The Ryzen 5 8400F's nearest rivals in overall CPU benchmarks include the AMD Ryzen 7 2700X with an average score of 25057 (0% delta) and the AMD Ryzen 5 7500F at 24993 (0.3% delta). This places the 8400F in the 82nd percentile of all CPUs, indicating strong multi-threaded capability that supports the frame rates seen at 1080p and 1440p where the GPU is less stressed.

How This Combo Ranks

Within the benchmark database's tested configurations, this particular CPU-GPU pairing achieves a combo rank of 1295 out of 1769 total combos for Pc Building Simulator. This places the system in the 73rd percentile of all tested combinations, which is notable given that the GPU sits in the 71st percentile of all GPUs and the CPU in the 82nd percentile of all CPUs. The rank suggests that while neither component is top-tier, their combination produces results that are better than the majority of tested systems.

The combo's ranking reflects the balanced nature of the pairing. The RX 6600 XT, with an average benchmark score of 27985, sits close to the NVIDIA GeForce GTX 980 Ti (27956, 0.1% delta) and the AMD Radeon R9 M395X (27883, 0.4% delta). The CPU's average benchmark score of 25064 is nearly identical to the AMD Ryzen 7 2700X at 25057, meaning the combo's performance in-game is largely determined by how well these two mid-range parts cooperate. Given that the GPU is ranked 1295th in the database and the CPU is ranked significantly higher, the overall combo rank of 1295 indicates that the GPU is the more limiting factor in this equation.

In practical terms, the combo outperforms roughly 27% of all tested configurations in this specific game, which is a respectable showing for a mid-range pairing. However, the rank also reveals that many higher-end combos achieve substantially better 4K performance, where this system struggles to maintain 60 FPS at any setting above Low.

Measured FPS Breakdown

At 1920x1080, the system delivers its strongest performance across all settings. Low settings produce an average of 222.9 FPS, which provides ample headroom for high-refresh-rate monitors. Medium settings yield 162.1 FPS, still well above the 144 Hz threshold. High settings maintain 110.2 FPS, while Ultra drops to 104.5 FPS — a surprisingly small gap between High and Ultra at this resolution, suggesting that the Ultra preset's additional effects are not heavily taxing the GPU at 1080p. The difference between Low and Ultra is 53.1%, showing that even the most demanding settings remain highly playable.

Moving to 2560x1440, the frame rates remain respectable but begin to show the GPU's limits. Low settings achieve 142.8 FPS, which is still excellent for competitive play. Medium settings produce 98.2 FPS, suitable for smooth gameplay on standard 60 Hz displays. High settings deliver 72.7 FPS, while Ultra drops to 68.7 FPS. The gap between High and Ultra narrows to just 5.5% at 1440p, indicating that the GPU's shading units and texture units are becoming saturated. The 2048 shading units and 128 TMUs of the RX 6600 XT are clearly working harder at this resolution, but the system still provides playable performance across all presets.

At 3840x2160, the RX 6600 XT's 8 GB VRAM and 128-bit memory bus become significant constraints. Low settings achieve 73.6 FPS, which is playable but not smooth on high-refresh displays. Medium settings drop to 51.9 FPS, High to 38.1 FPS, and Ultra to 32.9 FPS. The difference between Low and Ultra at 4K is 55.3%, and the system fails to reach 60 FPS at any setting above Low. The 64 ROPs and 165.7 GPixel/s pixel rate are simply insufficient for 4K Ultra workloads in this title.

GPU Role

The AMD Radeon RX 6600 XT, built on the RDNA 2.0 architecture with the Navi 23 chip, is the primary driver of performance variance in this combo. Its boost clock of 2589 MHz and game clock of 2359 MHz provide solid compute throughput, with FP32 performance rated at 10.60 TFLOPS. The GPU's 8 GB GDDR6 memory on a 128-bit bus delivers 256.0 GB/s bandwidth, which proves adequate for 1080p and 1440p but becomes a bottleneck at 4K.

The GPU's benchmark results place it in the 71st percentile of all GPUs, with an average score of 27985. Its nearest rival, the NVIDIA GeForce GTX 980 Ti, scores 27956 (0.1% delta), while the AMD Radeon R9 M395X scores 27883 (0.4% delta). The RX 6600 XT also trails the NVIDIA GeForce RTX 3070 by 0.9% (28238 vs 27985), though it outperforms the AMD FirePro S7150 by 1.5% (28409 vs 27985). These tight margins highlight the GPU's mid-range positioning.

The GPU's DirectX 12 Ultimate support and 32 ray tracing cores enable modern rendering features, with a passmark DirectX 12 score of 61 and DirectX 11 score of 163. The 3dmark Steel Nomad DX12 score of 1804 suggests that the GPU handles DX12 workloads reasonably well, which is relevant for a simulation game that may utilize modern APIs. However, the 4K FPS data clearly shows that the GPU's memory bandwidth and compute resources are insufficient for ultra-high-resolution gaming with this title. The 160 W TDP and PCIe 4.0 x8 interface provide sufficient power and bandwidth for the GPU's capabilities, but the 8 GB VRAM capacity is a limiting factor at higher resolutions where textures and geometry demand more memory.