Pc Building Simulator

Pc Building Simulator presents an interesting case study for the Intel Core i5-10400F and AMD Radeon RX 6650 XT combination. The benchmark data indicates that this pairing is heavily GPU-bound at higher resolutions, but becomes increasingly CPU-limited at 1080p. The measured FPS shows a clear scaling pattern that shifts from a graphics card bottleneck at 4K to a processor bottleneck at 1080p, with the system ranking 2431 out of 3723 tested combinations for this title.

Resolution Scaling

The FPS drop from 1080p to 4K is dramatic and reveals the limiting component at each resolution. At Low settings, the system delivers 234 FPS at 1920x1080, which drops to 147 FPS at 2560x1440, and further to 77 FPS at 3840x2160. This represents a 67% reduction in average FPS from 1080p to 4K, which strongly indicates that the GPU becomes the primary bottleneck as pixel count increases. The RX 6650 XT's 8 GB GDDR6 memory and 128-bit bus width are being pushed to their limits at 4K resolution.

At Ultra settings, the pattern continues but with lower absolute numbers. The system produces 111 FPS at 1080p, 70 FPS at 1440p, and 37 FPS at 4K. The 4K Ultra result drops below 40 FPS, which would be noticeable in a simulation game where smooth camera movement matters. The scaling from 1440p to 4K at Ultra shows a 47% performance loss, confirming that the GPU's rendering capabilities are the defining factor at these resolutions.

The Medium preset shows the most complete data with min and max FPS recorded. At 1080p Medium, the average is 165 FPS with a minimum of 141 FPS and maximum of 190 FPS. Moving to 1440p Medium drops the average to 104 FPS, and at 4K Medium the average falls to 55 FPS. The gap between 1080p and 1440p Medium (61 FPS difference) is larger than the gap between 1440p and 4K (49 FPS difference), suggesting that the transition to 4K imposes a more consistent load on the GPU.

The High preset follows a similar trajectory: 117 FPS at 1080p, 74 FPS at 1440p, and 39 FPS at 4K. This consistent halving of performance at each resolution step indicates that Pc Building Simulator's rendering demands scale almost linearly with pixel count. The data suggests that for 4K gaming, users would need to compromise significantly on settings, while 1440p offers a more balanced experience.

GPU Role

The AMD Radeon RX 6650 XT sits at the 65th percentile among all GPUs, with an average benchmark score of 19765. Its nearest rivals in the benchmark database include the NVIDIA Tesla K40m (score 19885, -0.6% delta) and the AMD FirePro W7000 (score 19905, -0.7% delta), showing that the RX 6650 XT performs slightly below these workstation cards in synthetic tests. However, in Pc Building Simulator specifically, the GPU's 8 GB of GDDR6 memory with 280.3 GB/s bandwidth proves adequate for 1080p and 1440p gaming.

The GPU's clock speeds are notable: a base clock of 2055 MHz, boost clock of 2635 MHz, and game clock of 2410 MHz. These frequencies allow the card to maintain high utilization in less demanding scenes, which explains the strong 1080p performance. The 2048 shading units and 128 texture mapping units provide the raw compute power needed for the simulation's rendering tasks, and the 64 ROPs handle pixel output efficiently at lower resolutions.

At 4K, the GPU's limitations become apparent. The 39 FPS average at High settings and 37 FPS at Ultra settings show that the card's 10.79 TFLOPS FP32 performance and 168.6 GPixel/s pixel rate are insufficient for smooth 4K gameplay. The memory bandwidth of 280.3 GB/s becomes a constraint at higher resolutions, as the GPU must access more texture data and geometry per frame. The RDNA 2.0 architecture with 32 ray accelerators does not provide enough additional headroom for this title at 4K.

The GPU's DirectX 12 Ultimate support (12_2) is relevant, as the benchmark results show a passmark DirectX 12 score of 62, which is notably lower than the DirectX 11 score of 169. This suggests that the game may be running on a DirectX 11 path despite the hardware supporting newer APIs, potentially leaving performance on the table. The Vulkan score of 81306 in Geekbench indicates the card handles modern APIs well, but the game's implementation may not fully utilize these capabilities.

CPU Role

The Intel Core i5-10400F provides 6 cores and 12 threads with a base clock of 2.90 GHz and boost clock of 4.30 GHz. This processor sits at the 68th percentile among all CPUs, with an average benchmark score of 14185. Its nearest rivals include the Intel Xeon 6756E (score 14163, +0.2% delta) and the AMD EPYC 7552 (score 14115, +0.5% delta), showing that the i5-10400F performs comparably to enterprise server processors in synthetic tests.

In Pc Building Simulator, the CPU's 12 MB of shared L3 cache and dual-channel DDR4 memory support (42.7 GB/s bandwidth) prove sufficient for the simulation's logic and physics calculations. The single-thread performance is particularly relevant, as the 3DMark single-thread score of 688 and PassMark single-thread score of 2541 indicate strong per-core performance for the game's primary thread. The Cinebench R23 single-core score of 1451 confirms this capability.

At 1080p, the CPU becomes the limiting factor. The difference between Low (234 FPS) and Ultra (111 FPS) at 1080p shows a 123 FPS range, which is larger than at 1440p (77 FPS range) or 4K (40 FPS range). This indicates that at 1080p, the GPU can render frames faster than the CPU can feed it game state updates, creating a CPU bottleneck. The 6-core, 12-thread configuration handles the simulation's multi-threaded workloads well, as evidenced by the Cinebench R20 multicore score of 4318 and PassMark multithread score of 12115.

However, the CPU's PCIe Gen 3 interface with 16 lanes may slightly limit the GPU's data transfer at higher frame rates, though this effect is minimal in practice. The 65W TDP and 14nm Comet Lake architecture represent older technology compared to the GPU's 7nm RDNA 2.0 design, but the processor's 4.30 GHz boost clock helps maintain responsiveness in CPU-bound scenarios. The 3DMark 16-thread score of 4748 and 8-thread score of 3929 show good scaling with additional threads, which benefits the game's background simulation systems.

FAQ

Q: What is the best resolution for this CPU-GPU combination in Pc Building Simulator?

A: The data shows that 2560x1440 provides the best balance, with 70-147 FPS depending on settings. At 1080p, the CPU limits performance, while at 4K the GPU drops below 40 FPS at High and Ultra settings.

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

A: At Low settings, average FPS drops from 234 at 1080p to 77 at 4K, a 67% reduction. At Ultra settings, the drop is from 111 to 37 FPS, a 67% reduction as well, showing consistent scaling across presets.

Q: Is the CPU or GPU the bottleneck at 1080p?

A: The CPU is the bottleneck at 1080p. Evidence shows that the FPS difference between Low and Ultra at 1080p is 123 FPS, which is larger than the GPU-driven differences at 1440p (77 FPS) or 4K (40 FPS), indicating the processor cannot keep up with the GPU's frame output.

Q: What settings give playable performance at 4K?

A: Medium settings provide the only playable 4K experience, with an average of 55 FPS and a minimum of 46 FPS. Low settings achieve 77 FPS average, but High and Ultra both fall below 40 FPS.

Q: How does the RX 6650 XT compare to its nearest rivals in synthetic benchmarks?

A: The RX 6650 XT (average score 19765) performs 0.6% below the NVIDIA Tesla K40m (score 19885) and 0.7% below the AMD FirePro W7000 (score 19905). It outperforms the AMD FirePro D300 (score 19637) by 0.7%.

Q: Does the game utilize the CPU's multi-threading capabilities?

A: The data suggests partial utilization. The CPU's 3DMark 16-thread score of 4748 versus 8-thread score of 3929 shows good scaling, but the 1080p bottleneck indicates the game's main thread limits performance, while background tasks benefit from the 12 threads.

Settings Recommendations

For the best experience in Pc Building Simulator, Medium settings at 2560x1440 provide the most balanced performance. The measured 104 FPS average with a minimum of 89 FPS and maximum of 120 FPS offers smooth gameplay without sacrificing visual quality. This preset delivers 47% more performance than High settings at the same resolution, while maintaining a minimum FPS above 60 for consistent frame pacing.

At 1920x1080, Ultra settings are the recommended choice despite the CPU bottleneck. The 111 FPS average is well above the 60 FPS threshold, and the visual improvements over High settings (117 FPS) cost only 6 FPS. The CPU limitation means that dropping from Ultra to Low only improves FPS from 111 to 234, but the visual quality trade-off at Ultra is worth the small performance cost for a simulation game where interface readability matters.

For 4K gaming, Medium settings are the only viable option. The 55 FPS average with a 46 FPS minimum is borderline but playable, whereas High (39 FPS) and Ultra (37 FPS) fall below acceptable levels. Low settings at 4K achieve 77 FPS but significantly reduce visual fidelity, making Medium the pragmatic choice for users with 4K displays.

Measured FPS Breakdown

At 1920x1080, the system delivers strong performance across all presets. Low settings produce 234 FPS average, Medium produces 165 FPS with a 141 FPS minimum and 190 FPS maximum, High produces 117 FPS, and Ultra produces 111 FPS. The range from Low to Ultra spans 123 FPS, reflecting the CPU bottleneck at this resolution.

At 2560x1440, performance remains solid but shows increased GPU influence. Low settings achieve 147 FPS average, Medium achieves 104 FPS with an 89 FPS minimum and 120 FPS maximum, High achieves 74 FPS, and Ultra achieves 70 FPS. The range across presets is 77 FPS, narrowing from the 1080p spread.

At 3840x2160, the GPU becomes the definitive limiting factor. Low settings produce 77 FPS average, Medium produces 55 FPS with a 46 FPS minimum and 63 FPS maximum, High produces 39 FPS, and Ultra produces 37 FPS. The 40 FPS range between Low and Ultra is the smallest of any resolution, confirming that the graphics card's rendering capacity dominates at 4K.