Downfall

Resolution Scaling

The measured FPS data for Downfall with the AMD Ryzen 5 5600 and Intel Arc B370 shows a steep performance curve as resolution climbs. At 1080p with Low settings, the combo averages 96 FPS. Dropping to 1440p Low reduces that to 68 FPS, a 29% decrease. Moving to 4K Low yields 43 FPS, which is 55% below the 1080p Low figure. This pattern indicates that the GPU is the primary scaling bottleneck, the Arc B370's compute and memory resources are being saturated as pixel count rises.

The Medium preset tells a similar story. At 1080p Medium, the average is 78 FPS with a minimum of 67 FPS and a maximum of 90 FPS. At 1440p Medium, the average falls to 56 FPS (min 48, max 64), and at 4K Medium it drops to 35 FPS (min 30, max 40). The gap between 1080p and 1440p Medium is 28%, while the gap between 1440p and 4K Medium is 38%. The larger drop at higher resolution reinforces that the Arc B370's rendering throughput is the limiting factor.

High settings show a similar trend but with lower absolute numbers. At 1080p High, the average is 64 FPS. At 1440p High, it is 46 FPS, a 28% reduction. At 4K High, the average is 29 FPS, which is 55% lower than the 1080p High result. The Ultra preset is the most demanding: 1080p Ultra averages 40 FPS, 1440p Ultra averages 29 FPS, and 4K Ultra averages 18 FPS. The percentage drop from 1080p to 4K Ultra is 55%, matching the Low preset's scaling behavior.

What does this scaling profile say about the limiting component? The consistent ~55% reduction from 1080p to 4K across both Low and High presets points to a GPU-bound scenario. If the CPU were the bottleneck, the FPS would not degrade so sharply with resolution changes, the CPU workload stays roughly constant regardless of pixel count. The fact that even Low settings at 4K only reach 43 FPS, while 1080p Low hits 96 FPS, indicates the Arc B370's fill rate and memory bandwidth are exhausted well before the Ryzen 5 5600's six cores become a constraint.

GPU Role

The Intel Arc B370 is an integrated graphics solution based on the Xe3-LPG architecture, built on Intel's 3 nm process. Its base clock is 300 MHz with a boost clock of 2400 MHz. The GPU has 1280 shading units, 40 texture mapping units, and 20 raster output units. It also includes 10 ray tracing cores. The pixel rate is 48.00 GPixel/s and the texture rate is 96.00 GTexel/s. FP32 performance is rated at 6.144 TFLOPS, with FP16 at 12.29 TFLOPS (2:1).

The memory subsystem is entirely system shared, size, type, bus width, and bandwidth are all listed as "System Shared" or "System Dependent." This is a critical detail for Downfall, a horror game that likely relies on consistent texture streaming and memory access patterns. The lack of dedicated VRAM means the GPU competes with the CPU for memory bandwidth, which becomes more pronounced at higher resolutions where the frame buffer demands grow.

The Arc B370's benchmark data shows a 3DMark Steel Nomad DX12 score of 1184. This places it at the 5th percentile of all GPUs, indicating very low absolute performance. Its nearest rivals in the benchmark database are the ATI Mobility Radeon HD 5570 (score 1186, deltaPct -0.2%), the ATI Radeon HD 5770 (score 1190, deltaPct -0.5%), and the AMD Radeon HD 7650M (score 1192, deltaPct -0.7%). The AMD FirePro M2000 scores 1168, which is 1.4% lower. These are all older or lower-tier parts, confirming that the Arc B370 is not a high-performance gaming GPU.

The power envelope is remarkably low at 25 W TDP, with no power connectors required, it is an IGP (integrated graphics processor) with a slot width of "IGP." This means it draws from the system's power delivery rather than a dedicated GPU power source. For Downfall, the practical implication is that the GPU will deliver playable frame rates only at lower settings and resolutions. The 4K Ultra result of 18 FPS is effectively unplayable, while 1080p Low at 96 FPS is smooth. The lack of dedicated VRAM likely contributes to the steep scaling penalties, as the system memory bandwidth becomes a bottleneck.

FAQ

Q: Can this system run Downfall at 4K?

A: Only at Low settings, where it averages 43 FPS. Medium settings at 4K drop to 35 FPS, High to 29 FPS, and Ultra to 18 FPS. The 4K Ultra result is below playable thresholds.

Q: What is the best resolution for smooth gameplay?

A: The data shows 1080p provides the highest frame rates across all settings. At 1080p Low, the average is 96 FPS; at Medium, 78 FPS; at High, 64 FPS; and at Ultra, 40 FPS. All 1080p presets except Ultra exceed 60 FPS.

Q: How does the Arc B370 compare to its nearest GPU rivals?

A: The Arc B370's 3DMark Steel Nomad score of 1184 is within 0.7% of the ATI Mobility Radeon HD 5570 (1186), ATI Radeon HD 5770 (1190), and AMD Radeon HD 7650M (1192). The AMD FirePro M2000 scores 1.4% lower at 1168.

Q: Is the CPU or GPU the limiting factor in Downfall?

A: The resolution scaling data indicates the GPU is the bottleneck. FPS drops by roughly 55% from 1080p to 4K across Low and High presets, which is characteristic of a GPU-bound workload. The CPU's workload does not scale with resolution.

Q: What settings should I use for a balance of quality and performance?

A: At 1080p, Medium settings provide 78 FPS average with a minimum of 67 FPS, making it the highest preset that stays comfortably above 60 FPS. High settings at 1080p average 64 FPS, which is also viable but with less headroom.

Q: Does the Ryzen 5 5600 hold back the Arc B370 in this game?

A: The data does not indicate CPU bottlenecking. The Ryzen 5 5600's single-thread score in 3DMark is 882, and its multithread score is 5659. Given that FPS scales heavily with resolution, the GPU is the limiting component.

Measured FPS Breakdown

The measured FPS data for the AMD Ryzen 5 5600 + Intel Arc B370 combo in Downfall covers four resolutions and four settings presets. Here is the complete breakdown.

At 1920x1080, the Low preset averages 96 FPS. The Medium preset averages 78 FPS, with a minimum of 67 FPS and a maximum of 90 FPS. The High preset averages 64 FPS. The Ultra preset averages 40 FPS. This shows a clear degradation from Low to Ultra, with the gap between High and Ultra being the largest single-step drop at 24 FPS.

At 2560x1440, the Low preset averages 68 FPS. The Medium preset averages 56 FPS, with a minimum of 48 FPS and a maximum of 64 FPS. The High preset averages 46 FPS. The Ultra preset averages 29 FPS. The step from High to Ultra at 1440p is a 17 FPS drop, which is proportionally similar to the 1080p step.

At 3840x2160, the Low preset averages 43 FPS. The Medium preset averages 35 FPS, with a minimum of 30 FPS and a maximum of 40 FPS. The High preset averages 29 FPS. The Ultra preset averages 18 FPS. At 4K, even Low settings fall below 60 FPS, and the Ultra preset is below 20 FPS.

Cross-referencing the settings, the Medium preset is the only one with min/max data at all three resolutions. At 1080p Medium, the min is 67 and the max is 90. At 1440p Medium, the min is 48 and the max is 64. At 4K Medium, the min is 30 and the max is 40. The min-to-max spread narrows as resolution increases (23 FPS at 1080p, 16 FPS at 1440p, 10 FPS at 4K), suggesting that the GPU's frame pacing becomes more consistent under heavy load, but at the cost of average performance.

The overall combo rank in Downfall is 2688 out of 2928 tested combinations. This places the pairing in the bottom 8% of all combos for this game, which aligns with the GPU's low percentile ranking. The Arc B370's 5th percentile position among all GPUs is the primary driver of this low rank.

CPU Role

The AMD Ryzen 5 5600 is a six-core, twelve-thread processor based on the Zen 3 architecture (codenamed Vermeer) on a 7 nm process. Its base clock is 3.50 GHz with a boost clock of 4.40 GHz. The TDP is 65 W, and it uses the AMD Socket AM4 platform. The CPU has 64 KB of L1 cache per core, 512 KB of L2 cache per core, and 32 MB of shared L3 cache. Memory support is DDR4 with dual-channel access and a bandwidth of 51.2 GB/s.

In Downfall, the CPU's role is secondary to the GPU, based on the measured FPS data. The resolution scaling pattern shows that FPS drops by approximately 55% from 1080p to 4K, which is a classic GPU-bound signature. If the Ryzen 5 5600 were the limiting factor, the FPS would remain relatively flat across resolutions because the CPU's workload is independent of pixel count. The fact that 4K Low only achieves 43 FPS while 1080p Low achieves 96 FPS confirms the GPU is the constraint.

The Ryzen 5 5600's benchmark scores provide context for its general capability. Its 3DMark single-thread score is 882, and its 2-thread score is 1737. The 4-thread score is 3313, 8-thread is 4798, and 16-thread (max) is 5641. Cinebench R23 multicore is 18309 and singlecore is 2584. Geekbench multicore is 9158 and singlecore is 1936. Passmark multithread is 21541 and single-thread is 3256. These scores indicate a solid mid-range desktop CPU that can handle modern game logic and physics without issue.

The CPU's closest rivals in the benchmark database are the Intel Core Ultra 7 258V (avg score 20454, deltaPct 0.1%), AMD Ryzen 5 8500G (20425, deltaPct 0.2%), AMD EPYC 9454P (20422, deltaPct 0.2%), and AMD EPYC 7713 (20363, deltaPct 0.5%). The Ryzen 5 5600's average benchmark score is 20468, placing it at the 74th percentile of all CPUs. This means the CPU is well above average in general compute performance, but in Downfall it is paired with a GPU that sits at the 5th percentile.

For this specific game, the CPU's 6 cores and 12 threads are sufficient to feed the Arc B370 at 1080p and 1440p, where frame rates are higher. At 4K, the GPU is so heavily loaded that the CPU has ample headroom. The data does not show any scenario where the Ryzen 5 5600's single-thread performance (3DMark single-thread score of 882) becomes a limiting factor. The bottleneck is unequivocally the GPU.

Settings Recommendations

Based on the measured FPS data, the best experience for the AMD Ryzen 5 5600 + Intel Arc B370 in Downfall depends on the target resolution and acceptable frame rate floor.

At 1080p, the Medium preset is the optimal choice. It averages 78 FPS with a minimum of 67 FPS, ensuring the frame rate stays above 60 FPS even in demanding scenes. The High preset averages 64 FPS, which is also playable, but the minimum is not recorded, so there is less certainty about worst-case performance. The Low preset at 96 FPS provides the smoothest experience but sacrifices visual fidelity. Ultra at 40 FPS is not recommended for smooth gameplay.

At 1440p, the Low preset averages 68 FPS, which is the only preset that exceeds 60 FPS at this resolution. Medium averages 56 FPS with a minimum of 48 FPS, which is playable but may experience noticeable drops. High averages 46 FPS, and Ultra averages 29 FPS. For a consistent experience at 1440p, Low is the safest choice. If visual quality is a priority, Medium offers a reasonable compromise with a 56 FPS average.

At 4K, no preset achieves 60 FPS. Low averages 43 FPS, Medium averages 35 FPS, High averages 29 FPS, and Ultra averages 18 FPS. The 4K Medium result has a minimum of 30 FPS, which is barely playable for a horror game where reaction time matters. The 4K Low preset at 43 FPS is the most viable 4K option, but players should expect a less fluid experience compared to lower resolutions.

The overarching recommendation is to run Downfall at 1080p with the Medium preset for the best balance of visual quality and frame rate stability. If a higher resolution is desired, 1440p Low is the only preset that maintains an average above 60 FPS. The Ultra preset should be avoided at any resolution due to its steep performance penalty, 40 FPS at 1080p, 29 FPS at 1440p, and 18 FPS at 4K. The data clearly shows that the Arc B370's performance ceiling is reached quickly, and settings must be tuned conservatively to achieve playable results.