Pc Building Simulator

# How This Combo Ranks

The AMD Ryzen 5 8400F paired with the AMD Radeon RX 6800 XT lands at rank 577 out of 1,769 tested combos in Pc Building Simulator. That places it in the upper third of all configurations tested, a solid mid-to-high tier result for a game that is more about system assembly logistics than raw graphical spectacle. The combo's position reflects a balanced pairing: neither component is a bottleneck at typical settings, and the data shows the duo performs consistently across resolution presets.

In the broader context of the database, this combo's ranking is respectable but not elite. The top tiers of the list are dominated by newer, higher-end parts, but this pairing's 577th place out of 1,769 puts it ahead of roughly two-thirds of all tested combinations. That is a meaningful achievement for a CPU that sits at the 82nd percentile among all processors and a GPU at the 87th percentile among all graphics cards. The synergy between the two AMD parts is evident in the measured FPS, which remain playable at nearly every setting combination tested.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture, specifically the Phoenix die built on a 4 nm process at TSMC. It runs with a base clock of 4.20 GHz and boosts up to 4.70 GHz, with a 65 W TDP. The 16 MB of shared L3 cache and 1 MB L2 per core provide decent memory latency characteristics for a simulation title like Pc Building Simulator, which tends to be more sensitive to single-thread performance than to raw multi-thread throughput.

Benchmark results show the CPU's single-thread capability is moderate: it scores 951 in 3DMark single-thread and 2,943 in Cinebench R23 single-core. Multi-thread scores are stronger, with a 3DMark max-thread score of 6,165 and a Cinebench R23 multi-core score of 20,851. In this game, the CPU's role is primarily to handle the simulation logic, UI interactions, and system state calculations, which are largely single-threaded. The data suggests the 8400F is more than adequate for these tasks, as evidenced by the high frame rates achieved even at lower resolutions where CPU overhead is more prominent.

The CPU's nearest rivals in the database include the AMD Ryzen 7 2700X, which scores nearly identically (25,057 vs. 25,064 average), and the AMD Ryzen 5 7500F, which is 0.3% faster. This places the 8400F in a competitive zone for its class, though its 82nd percentile ranking means it is not a top-tier performer. For a simulation game that does not heavily tax multi-core scaling, the 6-core, 12-thread configuration is sufficient, and the data confirms no CPU-induced frame drops in the measured FPS.

GPU Role

The AMD Radeon RX 6800 XT is a RDNA 2.0 architecture GPU based on the Navi 21 chip, built on a 7 nm process at TSMC. It features 4,608 shading units, 288 texture mapping units, and 128 raster operation units, with 72 ray tracing cores. The GPU operates with a base clock of 1,825 MHz, a game clock of 2,015 MHz, and a boost clock of 2,250 MHz. Memory is 16 GB of GDDR6 on a 256-bit bus, yielding a bandwidth of 512.0 GB/s. The card's FP32 performance is rated at 20.74 TFLOPS.

In Pc Building Simulator, the GPU's primary job is rendering the 3D workspace, component models, and case interior views. The 16 GB VRAM is more than ample for this title, which does not feature heavy texture loads or complex shaders. The GPU's benchmark scores reflect its capability: a 3DMark Steel Nomad DX12 score of 3,689, a PassMark G3D score of 24,980, and a Geekbench OpenCL score of 154,506. The 87th percentile ranking among all GPUs indicates the RX 6800 XT is a strong performer, though not at the very top.

The nearest rival comparisons show the RX 6800 XT is closely matched with the Intel Arc A550M (0.5% faster) and the NVIDIA RTX A1000 (1.7% slower), while it is 2.6% ahead of the NVIDIA GeForce RTX 4070 Ti SUPER. In this game, the GPU is the limiting factor at higher resolutions and settings, as indicated by the FPS scaling patterns discussed in the next sections.

Measured FPS Breakdown

The measured FPS data shows a clear relationship between resolution, settings, and performance. At 1080p, the combo delivers excellent frame rates across all settings. With Low settings, the average FPS is 342.6, which drops to 241.9 at Medium, 171.8 at High, and 163.2 at Ultra. These numbers indicate that at 1080p, the CPU and GPU are both capable of pushing well beyond typical display refresh rates, making this combo overkill for 1080p gaming in this title.

At 1440p, the frame rates remain very high. Low settings yield 214.6 FPS on average, Medium produces 151.8 FPS, High gives 107.3 FPS, and Ultra averages 105.2 FPS. The transition from 1080p to 1440p shows a predictable decline, but even at Ultra settings, the combo maintains triple-digit frame rates, which is impressive for a simulation game.

At 4K (3840x2160), the frame rates become more modest. Low settings produce 110.4 FPS on average, Medium drops to 81.5 FPS, High averages 55 FPS, and Ultra is essentially identical at 55.1 FPS. This is the first resolution where the GPU becomes a clear bottleneck, particularly at High and Ultra settings, where the frame rates fall below the 60 FPS threshold that many users consider the minimum for smooth gameplay.

Resolution Scaling

The FPS scaling across resolutions reveals the limiting component dynamics. From 1080p to 1440p, the average FPS drops by roughly 37% at Low settings (from 342.6 to 214.6), 37% at Medium (241.9 to 151.8), 38% at High (171.8 to 107.3), and 36% at Ultra (163.2 to 105.2). This consistent ~37% reduction indicates that the GPU is becoming more stressed as pixel count increases, but the CPU is still keeping up adequately.

Scaling from 1440p to 4K is more dramatic. At Low settings, FPS drops from 214.6 to 110.4, a 49% reduction. At Medium, it falls from 151.8 to 81.5, a 46% drop. At High, the decline is from 107.3 to 55, a 49% reduction, and at Ultra, from 105.2 to 55.1, a 48% drop. This near-halving of frame rates at 4K strongly suggests the GPU is the primary bottleneck at this resolution, as the pixel throughput demands exceed what the RX 6800 XT can deliver in this game.

Interestingly, the difference between High and Ultra settings is minimal at every resolution. At 4K, High averages 55 FPS and Ultra averages 55.1 FPS, nearly identical. At 1440p, the gap is 107.3 vs. 105.2 FPS, a 2% difference. At 1080p, High yields 171.8 FPS and Ultra yields 163.2 FPS, a 5% difference. This indicates that the Ultra preset adds little visual benefit in this game relative to High, while the performance cost is negligible. The data suggests that players should not expect meaningful differences between these two settings, and the limiting factor at 4K is clearly the GPU's fill rate and shading throughput.

The CPU, by contrast, shows no signs of bottlenecking in this title. Even at 1080p Low, where the frame rate reaches 342.6 FPS, the 8400F's 6 cores and 12 threads are sufficient to feed the GPU. This is consistent with the game's simulation nature, which does not involve complex physics or AI calculations that would stress the CPU. The combo's rank of 577 out of 1,769 is therefore a reflection of GPU-limited performance at higher resolutions, with the CPU playing a supporting role that it handles without issue.