Steamworld Build

# Steamworld Build with AMD Ryzen 5 8400F + NVIDIA GeForce RTX 5080

The AMD Ryzen 5 8400F pairs with the NVIDIA GeForce RTX 5080 in Steamworld Build, a city builder from 2023 that leans heavily on CPU simulation logic. This combo ranks 68th out of 1,730 tested combinations, placing it in the top 4% of all tested systems. The data reveals a pairing where the RTX 5080's immense graphics horsepower is often held back by the 8400F's six Zen 4 cores, particularly at lower resolutions where the CPU becomes the primary bottleneck. The measured frame rates show a clear progression from 53.5 FPS at 4K Ultra to 327.1 FPS at 1080p Low, demonstrating that this system's performance ceiling varies dramatically based on how heavily the GPU is loaded.

CPU Role

The AMD Ryzen 5 8400F brings 6 cores and 12 threads to Steamworld Build, with a base clock of 4.20 GHz that boosts to 4.70 GHz. This is a Zen 4 architecture part built on TSMC's 4 nm process, featuring 16 MB of shared L3 cache and support for DDR5 memory. Its 65W TDP and unlocked multiplier make it a flexible desktop processor, though its benchmark scores suggest it sits in the middle of the pack. The CPU's average benchmark score of 25,064 places it at the 82nd percentile of all tested CPUs, and its nearest rivals include the AMD Ryzen 7 2700X (25,057, 0% delta) and the AMD Ryzen 5 7500F (24,993, 0.3% delta). This means the 8400F is essentially tied with much older and newer parts in raw compute performance.

In Steamworld Build, the CPU's role is critical because city builders simulate thousands of individual agents, resource flows, and building states each frame. The 8400F's 16 MB of L3 cache is modest by modern standards, and its single-thread performance—3,684 in Passmark single-thread—determines how quickly the simulation can advance. The data shows that at 1080p Low, the system hits 327.1 FPS, which suggests the CPU can drive very high frame rates when the GPU is not saturated. However, the jump from 1080p Low to 1080p Ultra (165.9 FPS) represents a 49% drop, indicating that graphical settings impose a significant cost even at this resolution. The 8400F's 6 cores may be sufficient for the game's simulation thread, but the lack of additional cores could limit performance in late-game cities with massive populations.

FAQ

Q: How does the Ryzen 5 8400F compare to its nearest CPU rivals in benchmark scores?

A: The 8400F scores 25,064 on average, which is essentially identical to the AMD Ryzen 7 2700X at 25,057 (0% delta) and the AMD Ryzen AI 5 PRO 340 at 25,099 (-0.1% delta). It is slightly ahead of the AMD Ryzen 5 7500F at 24,993 (0.3% delta).

Q: What is the best performance this combo achieves in Steamworld Build?

A: The highest measured average FPS is 327.1 at 1920x1080 with Low settings. At 4K Ultra, the system drops to 53.5 FPS, which is the lowest measured average.

Q: How does the RTX 5080's benchmark score compare to its nearest rivals?

A: The RTX 5080 has an average benchmark score of 59,188, placing it at the 89th percentile of all GPUs. It is 1.6% ahead of the Intel Arc A570M (58,239), 2.5% ahead of the Intel Arc A580 (57,756), and 2.6% ahead of the AMD Radeon Pro W5500X (57,661), while trailing the Intel Arc Pro A60 (60,326) by 1.9%.

Q: Does this combo bottleneck at 1080p?

A: The data suggests yes. At 1080p Low, the system reaches 327.1 FPS, but moving to 1080p Ultra only yields 165.9 FPS. The scaling from Low to Ultra at 1080p causes a 49% performance drop, which is proportionally larger than the drop at 1440p or 4K, indicating the CPU is the limiting factor at lower resolutions.

Q: What memory bandwidth does the 8400F support, and how might that affect Steamworld Build?

A: The 8400F supports dual-channel DDR5 with 83.2 GB/s of memory bandwidth. City builders often require frequent memory accesses for simulation data, so this bandwidth could be a factor, though the measured results show the system still achieves high frame rates across most settings.

Q: How does the 8400F's single-thread performance compare to its multi-thread performance?

A: In Passmark, the 8400F scores 3,684 in single-thread and 24,530 in multi-thread tests. The 3DMark single-thread score is 951, while the max-thread score is 6,165. This indicates strong per-core performance, which is beneficial for Steamworld Build's simulation-heavy workload.

Resolution Scaling

The measured FPS data reveals a clear pattern of scaling from 1080p to 4K. At High settings, the system delivers 239.7 FPS at 1080p, 154.6 FPS at 1440p, and 79.4 FPS at 4K. This represents a 35% drop from 1080p to 1440p, and a 67% drop from 1080p to 4K. The scaling from 1440p to 4K shows a 49% reduction, which is substantial and indicates the GPU is becoming the primary bottleneck at higher resolutions.

At Low settings, the scaling is even more pronounced: 327.1 FPS at 1080p drops to 269.7 FPS at 1440p (18% reduction) and then to 141.2 FPS at 4K (57% reduction from 1440p). The 1080p Low result of 327.1 FPS suggests the CPU is nearing its limit, as the frame rate is likely capped by simulation speed rather than GPU output. At 4K Low, the 141.2 FPS shows the GPU can still handle the resolution with light settings, but the gap between 1080p and 4K widens as resolution increases.

Ultra settings show the steepest scaling: 165.9 FPS at 1080p drops to 103.7 FPS at 1440p (37% reduction) and then to 53.5 FPS at 4K (48% reduction from 1440p). The 4K Ultra result of 53.5 FPS is the only measurement below 60 FPS, indicating that this combo struggles with the highest settings at 4K. The pattern across all settings suggests that Steamworld Build is neither purely CPU-bound nor purely GPU-bound; rather, the bottleneck shifts based on resolution and settings, with the CPU dominating at low resolutions and the GPU taking over at 4K Ultra.

How This Combo Ranks

This combination of AMD Ryzen 5 8400F and NVIDIA GeForce RTX 5080 ranks 68th out of 1,730 tested combos in Steamworld Build. This places it in the top 4% of all systems tested, which is an impressive position given the relatively modest CPU. The ranking reflects the RTX 5080's substantial graphics power, which is in the 89th percentile of all GPUs, paired with a CPU that sits at the 82nd percentile. The gap between the GPU's percentile and the CPU's percentile suggests the 8400F is the weaker link in this pairing.

The combo's rank of 68 is notable because it outperforms many systems with higher-end CPUs but lower-tier GPUs. This indicates that Steamworld Build benefits more from GPU power than CPU power in the tested configurations. However, the ranking also shows that the 8400F's six cores can hold the RTX 5080 back—if the CPU were more capable, this combo could potentially rank higher. The data shows that at 1080p Low, the system achieves 327.1 FPS, which is likely near the CPU's maximum frame rate output, meaning the RTX 5080 is not fully utilized at this setting.

GPU Role

The NVIDIA GeForce RTX 5080 is a Blackwell 2.0 architecture GPU built on TSMC's 5 nm process, featuring 45,600 million transistors on a 378 mm² die. It has 10,752 shading units, 336 texture mapping units, and 112 ROPs, with 84 RT cores and 336 tensor cores. The GPU operates at a base clock of 2295 MHz and boosts to 2617 MHz, with memory running at 1875 MHz (30 Gbps effective). It comes with 16 GB of GDDR7 memory on a 256-bit bus, providing 960.0 GB/s of bandwidth. The RTX 5080's average benchmark score is 59,188, placing it at the 89th percentile of all GPUs.

In Steamworld Build, the RTX 5080's role is to render the game's detailed environments, which include complex building models, terrain, and visual effects. The GPU's 16 GB of VRAM is more than sufficient for this game, as city builders typically do not require massive texture memory. The 960.0 GB/s bandwidth ensures that texture streaming is never a bottleneck, even at 4K resolution. The GPU's FP32 performance of 56.28 TFLOPS provides ample compute power for the game's shading and particle effects. The measured results show the GPU can push 165.9 FPS at 1080p Ultra, which is well above the 60 FPS threshold for smooth gameplay. At 4K Ultra, the GPU manages 53.5 FPS, which is below 60 but still playable for a city builder where precise timing is less critical.

Measured FPS Breakdown

At 1920x1080, the system achieves its highest frame rates: 327.1 FPS at Low, 299.6 FPS at Medium, 239.7 FPS at High, and 165.9 FPS at Ultra. The progression from Low to Ultra shows a 49% reduction in performance, which is the largest relative drop across all resolutions. This indicates that at 1080p, the CPU is the limiting factor, as the RTX 5080 has ample headroom to render the scene regardless of settings.

At 2560x1440, the frame rates are 269.7 FPS at Low, 207.1 FPS at Medium, 154.6 FPS at High, and 103.7 FPS at Ultra. The drop from Low to Ultra is 62%, which is larger than at 1080p, suggesting the GPU is becoming more involved. The 1440p Ultra result of 103.7 FPS is still very playable, and even the 4K High result of 79.4 FPS exceeds 60 FPS.

At 3840x2160, the system delivers 141.2 FPS at Low, 109.2 FPS at Medium, 79.4 FPS at High, and 53.5 FPS at Ultra. The Low to Ultra drop is 62%, similar to 1440p, but the absolute numbers are much lower. The 4K Ultra result is the only measurement below 60 FPS, and it represents a significant performance cost for the highest settings. The scaling from 1440p to 4K at each settings level shows reductions of 48% at Low, 47% at Medium, 49% at High, and 48% at Ultra, indicating a consistent GPU bottleneck at 4K.

Settings Recommendations

For players seeking the best balance of visual quality and performance, the data suggests that High settings at 1440p or 4K provide the most compelling experience. At 1440p High, the system delivers 154.6 FPS, which is well above the 60 FPS threshold and offers a significant improvement over Medium settings (207.1 FPS) in visual fidelity without sacrificing smoothness. At 4K High, the 79.4 FPS result is still above 60 FPS and provides the highest resolution experience without dropping below playable frame rates.

For players with high-refresh-rate monitors at 1080p, Medium settings at 299.6 FPS offer a good compromise between visual quality and frame rate, as the jump to High (239.7 FPS) does not provide a proportional visual benefit. Ultra settings at any resolution are not recommended due to the steep performance cost—at 1080p Ultra, the 165.9 FPS is still high, but at 4K Ultra, the 53.5 FPS falls below the 60 FPS standard. The data indicates that High settings provide the best overall experience, as it maintains frame rates above 60 FPS at all resolutions tested while delivering substantial visual improvements over Medium settings.