Pc Building Simulator

# Pc Building Simulator — AMD Ryzen 7 3700X + NVIDIA GeForce RTX 4090

This combination pairs AMD's 8-core Zen 2 processor with NVIDIA's flagship Ada Lovelace GPU, producing a notably lopsided pairing in Pc Building Simulator where the RTX 4090's immense rendering power is frequently constrained by the CPU's older architecture. The measured frame rates reveal a system that excels at high-resolution gaming but shows diminishing returns at lower resolutions, where the Ryzen 7 3700X becomes the limiting factor. With 24 GB of GDDR6X memory and an 82.58 TFLOPS FP32 compute capability, the GPU is clearly overprovisioned for this simulation title, yet the data shows the CPU still manages to keep pace reasonably well at 4K.

Resolution Scaling

The frame rate progression from 1080p to 4K demonstrates classic CPU-bound behavior at lower resolutions. At 1920x1080 with Ultra settings, the system delivers 204.4 FPS, which drops to 156.1 FPS at 2560x1440 (−23.6%), and further to 84.3 FPS at 3840x2160 (−58.8% from 1080p). This scaling pattern indicates that the RTX 4090 is not the primary constraint at 1080p — the Ryzen 7 3700X, with its 3.60 GHz base and 4.40 GHz boost clocks, simply cannot feed frames fast enough to saturate the GPU's capabilities. The relatively modest 23.6% drop from 1080p to 1440p suggests the GPU begins to take on more responsibility at that resolution, while the steep 46% drop from 1440p to 4K confirms the RTX 4090's rendering load becomes dominant at Ultra settings in 4K.

Looking at Low settings tells a clearer story about the CPU limit. At 1080p Low, the system hits 266.3 FPS, but at 1440p Low it only drops to 227.7 FPS (−14.5%), and at 4K Low it still maintains 171.4 FPS (−35.6% from 1080p). The relatively small penalties at lower settings across resolutions indicate that the CPU is holding the system back even at 4K when graphical load is minimal. The RTX 4090's 2520 MHz boost clock and 443.5 GPixel/s pixel rate are more than sufficient for Low settings at any resolution, yet the frame rate ceiling appears to be around 266 FPS — a likely artifact of the CPU's single-thread performance, which scores 2656 in Passmark's single-thread test.

GPU Role

The RTX 4090's role in Pc Building Simulator is best understood through its memory subsystem and clock behavior. With 24 GB of GDDR6X memory on a 384-bit bus delivering 1.01 TB/s bandwidth, the GPU has ample resources for this simulation game, which does not appear to be memory-capacity sensitive based on the measured results. The memory clock runs at 1313 MHz with 21 Gbps effective speed, and the GPU's 16384 shading units provide massive parallel throughput — yet the game's frame rates suggest that raw compute is rarely the bottleneck except at 4K Ultra settings, where the 84.3 FPS result aligns with expectations for a GPU of this class.

The transition from Medium to Ultra settings at each resolution shows the GPU's scaling behavior. At 1080p, Medium delivers 236.9 FPS while Ultra drops to 204.4 FPS (−13.7%), a modest penalty indicating the CPU is still partially limiting. At 1440p, the same settings transition yields 200.7 FPS to 156.1 FPS (−22.2%), showing the GPU taking on more work. At 4K, Medium produces 120 FPS while Ultra drops to 84.3 FPS (−29.8%), which is the clearest evidence of GPU-bound operation in the dataset. The RTX 4090's 450 W TDP and triple-slot cooler design are consistent with a card that can sustain these workloads, and its 91st percentile ranking among all GPUs confirms its position near the top of the performance hierarchy.

How This Combo Ranks

The combination of AMD Ryzen 7 3700X and NVIDIA GeForce RTX 4090 ranks 286th out of 1769 tested combos in Pc Building Simulator, placing it in the top 16.2% of all pairings. This position reflects the CPU's relative weakness against more modern processors — the Ryzen 7 3700X sits at the 85th percentile among all CPUs with an average benchmark score of 28631, while its nearest rivals include the Intel Core i5-12600 with a score of 28654 (−0.1% delta) and the AMD Ryzen 5 5600XT at 28591 (+0.1% delta). The near-identical scores among these rivals indicate that the CPU is not a differentiator in this game; the ranking is instead driven by the GPU's overwhelming performance.

The RTX 4090's own benchmark position helps contextualize the combo ranking. With an average benchmark score of 66473, the GPU sits at the 91st percentile and its nearest rivals include the NVIDIA Tesla T4 (66733, −0.4%), NVIDIA Tesla P40 (66127, +0.5%), and AMD Radeon Pro Vega 56 (67097, −0.9%). These workstation-class cards are not typical gaming counterparts, which underscores the RTX 4090's unique position. The combo's 286th rank suggests that many other pairings in the database achieve better results in Pc Building Simulator, likely because the Ryzen 7 3700X's Zen 2 architecture, with its 32 MB L3 cache and dual-channel DDR4 memory support at 51.2 GB/s bandwidth, cannot fully leverage the GPU's capabilities in this CPU-sensitive title.

FAQ

Q: Why does the frame rate drop so much from 1080p to 4K at Ultra settings?

A: At 1920x1080 Ultra, the system produces 204.4 FPS, but 3840x2160 Ultra drops to 84.3 FPS, a 58.8% reduction. This steep decline indicates the RTX 4090 becomes fully utilized at 4K, while at 1080p the Ryzen 7 3700X's single-thread performance (2656 in Passmark) limits the frame rate.

Q: Is the RTX 4090 overkill for this game?

A: The data suggests yes at lower resolutions. At 1080p Low, the system reaches 266.3 FPS, which is likely a CPU ceiling rather than a GPU limit. Even at 4K Low, the 171.4 FPS result shows the GPU handling the load easily, with the CPU still influencing performance.

Q: How does this combo compare to its nearest GPU rivals?

A: The RTX 4090's average benchmark score of 66473 places it 0.4% behind the NVIDIA Tesla T4 (66733) and 0.5% ahead of the NVIDIA Tesla P40 (66127). These differences are minimal, but the RTX 4090's gaming-oriented architecture makes it more suitable for this title.

Q: What settings provide the best balance at 1440p?

A: At 2560x1440, High settings deliver 161.6 FPS while Ultra drops to 156.1 FPS (−3.4%). The small gap suggests Ultra is viable, and the 200.7 FPS Medium result indicates the CPU still has headroom at this resolution.

Q: Does the CPU bottleneck at 4K?

A: Partially. At 4K Low, the system produces 171.4 FPS, which is only 35.6% below the 1080p Low result of 266.3 FPS. This indicates the CPU still matters even at 4K when graphics load is low, but at Ultra settings the GPU becomes the dominant constraint.

Q: How does the Ryzen 7 3700X compare to its nearest rival in this context?

A: The Ryzen 7 3700X scores 28631 in average benchmarks, essentially tied with the Intel Core i5-12600 at 28654 (−0.1%) and the AMD Ryzen 5 5600XT at 28591 (+0.1%). This parity means CPU choice among these models would not meaningfully change Pc Building Simulator performance.

Measured FPS Breakdown

The complete measured frame rate data for this combination in Pc Building Simulator is presented below, organized by resolution and settings.

1920x1080 (1080p):

• Low: 266.3 FPS average
• Medium: 236.9 FPS average
• High: 206.7 FPS average
• Ultra: 204.4 FPS average

At 1080p, the gap between Low and Medium is 29.4 FPS (12.4%), while the difference between High and Ultra is just 2.3 FPS (1.1%). The small High-to-Ultra delta indicates the CPU is the limiting factor at these settings, as the GPU should show larger penalties for Ultra-quality effects.

2560x1440 (1440p):

• Low: 227.7 FPS average
• Medium: 200.7 FPS average
• High: 161.6 FPS average
• Ultra: 156.1 FPS average

The 1440p results show a wider spread between settings, with Low to Medium dropping 27.0 FPS (11.9%), Medium to High dropping 39.1 FPS (19.5%), and High to Ultra dropping only 5.5 FPS (3.4%). The larger Medium-to-High penalty suggests the GPU begins to matter more at this resolution, while the compressed High-to-Ultra gap still shows CPU influence.

3840x2160 (4K):

• Low: 171.4 FPS average
• Medium: 120.0 FPS average
• High: 85.2 FPS average
• Ultra: 84.3 FPS average

At 4K, the scaling becomes more pronounced: Low to Medium drops 51.4 FPS (30.0%), Medium to High drops 34.8 FPS (29.0%), and High to Ultra drops just 0.9 FPS (1.1%). The near-identical High and Ultra results at 4K are striking — the 84.3 and 85.2 FPS figures suggest a hard performance plateau that may reflect a game engine limit or the CPU's inability to push beyond this threshold at 4K regardless of settings. The RTX 4090's 24 GB memory capacity and 1.01 TB/s bandwidth are clearly not exhausted at any settings level, confirming that the frame rate ceiling here is not memory-related.