Downfall

The AMD Ryzen 5 5500X3D paired with the Intel Arc B390 is a deeply unusual combination, pitting a high-end desktop CPU with 3D V-Cache against an integrated-class graphics processor. In Downfall, this pairing produces playable frame rates at lower settings, but the GPU is clearly the limiting factor. The data indicates that this combo ranks in the bottom 11% of all tested configurations, making it a niche choice for this title.

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 5 5500X3D is a 6-core, 12-thread processor based on the Zen 3 architecture (Vermeer). It operates on the AMD Socket AM4 platform with a base clock of 3.00 GHz and a boost clock of 4.00 GHz. This CPU carries a 105 W TDP and is built on TSMC's 7 nm process node. Its cache hierarchy is notable: 64 KB of L1 per core, 512 KB of L2 per core, and a substantial 96 MB of shared L3 cache. This large L3 cache is the defining feature of the X3D lineupchers, and it directly benefits workloads that repeatedly access the same data.

In Downfall, however, the CPU's role is largely ancillary. The game is not CPU-bound at any tested resolution or setting. The benchmark results show that even at 1080p Low, where the CPU would be most likely to surface as a bottleneck, the average frame rate is 106 FPS. This is a strong indicator that the processor has ample headroom. The Ryzen 5 5500X3D's PassMark multithread score of 20363 and single-thread score of 2941 place it in the 85th percentile among all CPUs, showing it is a capable performer. Compared to its nearest rivals, it is essentially tied: it scores 0.2% above the AMD Ryzen 5 5600F and 0.2% above the Intel Core Ultra 5 225, while sitting 0.2% below the AMD Ryzen AI 7 PRO 450 and 0.3% below the Intel Core i9-12900T. These deltas are negligible in real-world gaming.

The CPU's 96 MB of L3 cache is a unique asset. For a horror game Downfall, the data suggests that the engine does not heavily leverage this cache, as the frame rate scaling from 1080p to 4K is almost entirely determined by the graphics processor. The CPU's 51.2 GB/s memory bandwidth and dual-channel DDR4 support are standard for the platformaine, but they do not create any observable constraint in the measured results. Given the GPU's performance ceiling, the Ryzen 5 5500X3D is effectively idle in this configuration, waiting on the Arc B390 to deliver frames. The CPU's PassMark data compression score of 230392 and floating-point math score of 34511 show strong general compute, but these do not translate into higher frame rates when the GPU is the bottleneck. In short, the CPU is overqualified for this pairing in this specific game.

GPU Role — VRAM, clocks, and how they relate to this game's results

The Intel Arc B390 is a graphics processor based on the Xe3-LPG architecture (Panther Lake). It is an integrated graphics solution (IGP) with a 3 nm process node from Intel. The GPU has a base clock of 300 MHz and a boost clock of 2500 MHz. Its memory configuration is entirely "System Shared," meaning it relies on the host system's RAM for both capacity and bandwidth. This is a critical limitation, as memory bandwidth is "System Dependent" and not dedicated to the graphics workload. The GPU features 1536 shading units, 48 texture mapping units (TMUs), and 24 raster operations pipelines (ROPs), along with 12 ray tracing cores. Its compute capabilities include 7.680 TFLOPS of FP32 performance and 15.36 TFLOPS of FP16 performance (2:1 ratio). The TDP is 80 W, and it uses no power connectors, confirming its integrated nature.

In Downfall, the Arc B390's performance is the primary constraint. The GPU's benchmark score on 3DMark Steel Nomad (DX12) is 1482, which places it in the 9th percentile among all GPUs. This is a very low score, and its nearest rivals are all legacy NVIDIA parts: the GeForce GT 520MX (1.3% higher), GeForce 800M (1.5% higher), GeForce GT 625 OEM (2.5% higher), and GeForce GT 710 (2.7% higher). These comparisons contextualize the Arc B390's entry-level positioning. The "System Shared" memory is a major factor; the GPU cannot access fast dedicated VRAM, which likely hurts performance in texture-heavy scenes. The 2500 MHz boost clock is respectable for an integrated part, but it cannot compensate for the lack of dedicated memory bandwidth.

The measured FPS in Downfall reflects this GPU's limitations. At 1080p Low, the average is 106 FPS, which is smooth. However, this drops significantly as settings and resolution increase. The GPU's 24 ROPs and 48 TMUs are modest numbers, and the data suggests that fill-rate and texture throughput become bottlenecks at higher resolutions and quality presets. The 12 RT cores are present, but Downfall does not appear to use ray tracing in these benchmarks, so they offer no advantage here. The Arc B390 is a part designed for basic graphical output, not demanding gaming. The data shows that even at 1080p Ultra, the average FPS falls to 44, indicating that the GPU is overwhelmed by the graphical load. The 60.00 GPixel/s pixel rate and 120.0 GTexel/s texture rate are the theoretical limits, and the benchmark results show the GPU hitting these walls at higher settings. This is a clear case of an IGP being asked to do a discrete GPU's job.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the AMD Ryzen 5 5500X3D and Intel Arc B390 ranks 3303 out of 3716 tested combos in Downfall. This places it in the bottom 11% of all configurations, which is a poor showing. The rank is driven almost entirely by the GPU, as the CPU is well above average in its own percentile. This disparity creates a significant bottleneck. The combo's rank indicates that the vast majority of other CPU/GPU pairings deliver higher frame rates in this game. The data suggests that the Ryzen 5 5500X3D is wasted in this pairing; a weaker CPU would likely yield similar results, as the Arc B390 is the limiting factor. The 3716 total combos represent a wide range of hardware, and this pairing sits near the bottom, mostly alongside other integrated-graphics solutions or very low-end discrete GPUs.

The rank of 3303 is a direct consequence of the GPU's 9th percentile standing. The CPU's 85th percentile cannot lift the combo out of the lower echelons. This is a classic example of a mismatched pairing. For a builder considering this combo, the data clearly shows that the GPU will hold back any CPU. The high L3 cache of the Ryzen 5 5500X3D does not help in this scenario, as the GPU cannot produce enough frames to benefit from the CPU's processing headroom. The combo rank is a holistic measure, and it confirms that this is not a viable setup for a smooth Downfall experience at higher settings. The only silver lining is that the data is measured, not estimated, so these results are reliable. The ranking suggests that if a user already owns the Ryzen 5 5500X3D, they should pair it with a far more powerful GPU to see a reasonable rank in this title.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data provides a complete picture of the combo's performance across three resolutions and four quality settings. At 1920x1080, the results are as follows: Low averages 106 FPS, Medium averages 87 FPS (with a minimum of 74 and maximum of 100), High averages 71 FPS, and Ultra averages 44 FPS. This shows a clear progression of performance degradation as settings increase. The difference between Low and Ultra is 62 FPS, which is a 58.5% drop. This indicates that the GPU is highly sensitive to graphical quality settings at 1080p. The Medium preset's min/max range of 74-100 FPS shows some variance, but the average is stable.

Moving to 2560x1440, the frame rates drop significantly. Low averages 76 FPS, Medium averages 62 FPS (min 53, max 71), High averages 51 FPS, and Ultra averages 32 FPS. The drop from 1080p Low to 1440p Low is 30 FPS (a 28.3% decrease). At Ultra, the drop from 1080p to 1440p is 12 FPS (a 27.3% decrease). The scaling is consistent, suggesting that the GPU is pixel-bound rather than shader-bound. The 1440p Medium preset shows a min of 53 FPS, which is still playable, but the Ultra preset's 32 FPS average is borderline for a horror game that may require quick reactions.

At 3840x2160 (4K), the results are marginal. Low averages 47 FPS, Medium averages 39 FPS (min 33, max 44), High averages 32 FPS, and Ultra averages 20 FPS. The Low preset at 4K is the only one that approaches playability, and even it is below the 60 FPS threshold. The Ultra preset at 4K is effectively unplayable at 20 FPS. The data shows that the Arc B390 cannot handle 4K gaming in Downfall beyond the absolute lowest settings. The Medium preset's min of 33 FPS suggests noticeable stuttering. Across all resolutions, the pattern is clear: the GPU is the sole performance limiter, and it runs out of headroom quickly as pixel count and quality rise. The measured data is comprehensive, covering all 12 combinations of resolution and settings.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The resolution scaling from 1080p to 4K provides direct evidence of the bottleneck. At Low settings, the average FPS drops from 106 at 1080p to 76 at 1440p, and then to 47 at 4K. This is a 55.7% drop from 1080p to 4K. At High settings, the drop is from 71 at 1080p to 51 at 1440p, and then to 32 at 4K, a 54.9% drop. At Ultra, the drop is from 44 at 1080p to 32 at 1440p, and then to 20 at 4K, a 54.5% drop. The consistency of these percentage drops across settings is the key indicator. The FPS is scaling almost linearly with the pixel count (4K has 4x the pixels of 1080p, but the FPS is dropping by roughly half, not a quarter). This suggests that the GPU is not purely pixel-bound; it is also limited by other factors like memory bandwidth and fill rate.

If the CPU were the limiting factor, we would expect the FPS to remain relatively flat as resolution increases, because the CPU workload does not change much with resolution. That is not the case here. The FPS drops consistently, proving that the GPU is the bottleneck. The "System Shared" memory is likely the culprit. As resolution increases, the demand for memory bandwidth grows, and the shared system memory cannot keep up. The 2500 MHz boost clock on the GPU is insufficient to overcome this. The data also shows that the scaling is slightly worse at lower settings (a 55.7% drop at Low vs. a 54.5% drop at Ultra). This is because at Low settings, the GPU is less shader-bound and more memory-bound, so the memory bandwidth limitation is more pronounced. This pattern is common for integrated graphics solutions. The resolution scaling analysis confirms that any upgrade path for this combo must start with the GPU. The CPU has plenty of headroom, as evidenced by the relatively high FPS at 1080p Low (106 FPS), but the GPU cannot deliver playable performance at higher resolutions. The scaling data is a clear call to action for any user: do not expect to play Downfall above 1080p with this setup.

FAQ

*Q: Is this combo capable of running Downfall at 60 FPS?*

A: At 1920x1080 with Low settings, the average FPS is 106, which is above 60. At 1080p Medium, it drops to 87 FPS. However, at 1440p Low, it falls to 76 FPS, and at 4K Low, it drops to 47 FPS. The 60 FPS threshold is only met at 1080p with Low or Medium settings.

Q: Which component is holding back performance in this game?

A: The Intel Arc B390 is the primary bottleneck. The GPU's benchmark score is 1482 (9th percentile), while the CPU is in the 85th percentile. The FPS drops consistently as resolution increases, indicating the GPU cannot keep up with the pixel workload.

Q: How does the Intel Arc B390 compare to its nearest rivals?

A: The Arc B390 scores 1.3% higher than the NVIDIA GeForce GT 520MX, 1.5% higher than the GeForce 800M, 2.5% higher than the GT 625 OEM, and 2.7% higher than the GT 710. These are all very low-end parts, confirming the Arc B390's entry-level status.

Q: What is the best settings preset for 1440p gaming?

A: At 2560x1440, the Low preset averages 76 FPS, and the Medium preset averages 62 FPS. The High preset drops to 51 FPS, and Ultra drops to 32 FPS. For a playable experience, Medium is the highest viable preset.

*Q: Does the CPU's large L3 cache help in Downfall?*

A: The data does not show a benefit. The 96 MB L3 cache is a strong feature for some workloads, but in this game, the GPU is so limiting that the CPU's cache has no observable impact on frame rates. The frame rate is entirely dictated by the GPU.

Q: Is this combo ranked well compared to other tested systems?

A: No. It ranks 3303 out of 3716 combos, placing it in the bottom 11%. This is a low rank, driven by the GPU's poor performance. The CPU is not the issue; the GPU's 9th percentile score drags the entire combo down.