Downfall

Resolution Scaling

The measured frame rates for Downfall with the AMD Ryzen 7 9800X3D and Intel Arc B390 show a clear and consistent progression as resolution increases. At 1920x1080 with Low settings, the combo delivers 106 FPS on average. Moving to 2560x1440 at the same settings drops that to 76 FPS, a reduction of 30 FPS. At 3840x2160, the Low preset yields 47 FPS, which is 59 FPS below the 1080p figure. This pattern — a roughly 28% decline from 1080p to 1440p, and a further 38% decline from 1440p to 4K at Low settings — indicates that the scaling is steep but not catastrophic.

The Medium preset tells a similar story. At 1080p, the average is 87 FPS, with a minimum of 74 FPS and a maximum of 100 FPS. At 1440p, the average falls to 62 FPS, with the minimum at 53 FPS and maximum at 71 FPS. At 4K, the Medium preset manages 39 FPS on average, with a minimum of 33 FPS and a maximum of 44 FPS. The delta between 1080p and 4K for Medium is 48 FPS. The High preset shows 71 FPS at 1080p, 51 FPS at 1440p, and 32 FPS at 4K. The Ultra preset is the most demanding, dropping from 44 FPS at 1080p to 32 FPS at 1440p and finally 20 FPS at 4K.

What does this scaling reveal about the limiting component? The frame rate drops are substantial at every step, but the fact that the GPU's benchmark percentile is only 9 suggests the graphics card is the primary bottleneck. The Ryzen 7 9800X3D, by contrast, sits in the 87th percentile among all CPUs, with a strong multi-threaded score of 23,230 in Cinebench R23 and 18,696 in Geekbench multicore. When a high-end CPU is paired with a low-percentile GPU, resolution scaling tends to exaggerate the GPU's limitations. The data supports this: at 4K Ultra, the combo barely reaches 20 FPS, a figure that points squarely at the graphics subsystem.

The gap between Low and Ultra also widens with resolution. At 1080p, Low delivers 106 FPS versus Ultra's 44 FPS, a difference of 62 FPS. At 1440p, the gap is 44 FPS (76 versus 32). At 4K, the gap narrows to 27 FPS (47 versus 20). This narrowing is typical of a GPU-bound scenario: as resolution increases, the pixel throughput demand grows, and the difference between settings compresses because the GPU is already saturated at Low. The CPU, with its 8 cores and 16 threads, is not the constraint here; the data shows a GPU that is overwhelmed at higher resolutions.

GPU Role

The Intel Arc B390 is an integrated graphics solution based on the Panther Lake chip and Xe3-LPG architecture, manufactured on a 3 nm process. Its base clock is 300 MHz, boosting to 2500 MHz. The memory configuration is entirely system-shared, with the bus width and bandwidth also listed as system dependent. This means the GPU relies on the host system's DDR5 memory, and the bandwidth is not fixed but rather contingent on the platform.

The GPU's benchmark results are modest. In 3DMark Steel Nomad DX12, it scores 1,482, which places it in the 9th percentile among all GPUs. Its nearest rivals, according to the data, are the NVIDIA GeForce GT 520MX (score 1,463, delta 1.3%), the NVIDIA GeForce 800M (score 1,460, delta 1.5%), the NVIDIA GeForce GT 625 OEM (score 1,446, delta 2.5%), and the NVIDIA GeForce GT 710 (score 1,443, delta 2.7%). The Arc B390 leads this group by a small margin — 1.3% ahead of the GT 520MX — but these are all entry-level or legacy parts. The 9th percentile ranking underscores that this GPU is not designed for demanding gaming workloads.

The shading units number 1,536, with 48 texture mapping units and 24 raster operation units. The pixel rate is 60.00 GPixel/s, and the texture rate is 120.0 GTexel/s. The FP32 throughput is 7.680 TFLOPS, with FP16 at 15.36 TFLOPS (2:1). These specifications align with an integrated part rather than a discrete card, and the measured FPS in Downfall reflects that. At 1080p Low, 106 FPS is playable, but the GPU's limits become apparent as settings and resolution rise.

The relationship between the GPU's clocks and the game results is straightforward. The boost clock of 2500 MHz is relatively high for an integrated part, but the system-shared memory and the low shader count (1,536 units) cap its real-world performance. The fact that the GPU's average benchmark score is exactly 1,482 — the same as its single 3DMark result — indicates a lack of diverse testing data, but the measured FPS in Downfall provides a concrete picture. The GPU is the limiting factor in this combination, and the frame rates at 4K (20-47 FPS depending on settings) confirm that this is not a high-resolution gaming platform.

CPU Role

The AMD Ryzen 7 9800X3D is a desktop processor from the 9000 series, built on the Zen 5 architecture (codenamed Granite Ridge) using a 4 nm process at TSMC. It has 8 cores and 16 threads, with a base clock of 4.70 GHz and a boost clock of 5.20 GHz. The L3 cache is 96 MB shared, which is substantial and typical of the X3D line. The CPU supports DDR5 memory with dual-channel configuration, offering 89.6 GB/s of bandwidth. It uses the AMD Socket AM5 and has a TDP of 120 W.

In synthetic benchmarks, the CPU performs strongly. Its Cinebench R23 multicore score is 23,230, and the single-core score is 2,080. Geekbench results show 18,696 multicore and 2,964 single-core. The 3DMark scores scale well from 2 threads (2,394) to 16 threads (10,081), indicating good multi-threading scaling. The PassMark multithread score is 40,009, and the single-thread score is 4,430. The CPU's average benchmark score is 39,768, placing it in the 87th percentile among all CPUs.

The nearest rivals in the CPU benchmark data are close. The AMD Ryzen 7 PRO 8840HS scores 39,603 (delta 0.4%), the AMD Ryzen AI 9 365 scores 40,048 (delta -0.7%), the AMD Ryzen AI 7 450 scores 39,485 (delta 0.7%), and the AMD Ryzen 7 7700 scores 40,081 (delta -0.8%). The 9800X3D sits right in the middle of this pack, within 1% of each rival. This suggests that for CPU-bound tasks, the 9800X3D is competitive but not dramatically ahead of these alternatives.

In Downfall, the CPU's role is secondary. The game is a horror title from 2016, and the measured FPS are clearly GPU-limited. The CPU's high single-thread performance (2,080 in Cinebench R23 single-core) should be more than sufficient for this game's logic, but the data does not show the CPU being taxed. Instead, the frame rates are dictated by the Arc B390. The CPU's 8 cores and 16 threads, combined with 96 MB of L3 cache, provide ample headroom, but this headroom goes unused when the GPU cannot keep up. The CPU's 87th percentile ranking versus the GPU's 9th percentile is the key takeaway: the processor is not the bottleneck.

FAQ

Q: What is the best average FPS this combo achieves in Downfall?

A: The highest measured average FPS is 106, achieved at 1920x1080 with Low settings.

Q: How does the Intel Arc B390 compare to its nearest rival in GPU benchmarks?

A: The Arc B390 scores 1,482 in 3DMark Steel Nomad DX12, which is 1.3% higher than the NVIDIA GeForce GT 520MX (score 1,463) and 2.7% higher than the NVIDIA GeForce GT 710 (score 1,443).

Q: Is the Ryzen 7 9800X3D a high-performing CPU relative to other tested parts?

A: Yes, the CPU's average benchmark score is 39,768, placing it in the 87th percentile among all CPUs. Its nearest rival, the AMD Ryzen 7 7700, scores 40,081, which is 0.8% higher.

Q: What frame rate can be expected at 2560x1440 with Medium settings?

A: The measured average FPS is 62, with a minimum of 53 FPS and a maximum of 71 FPS.

Q: Does the combo maintain playable frame rates at 3840x2160?

A: At 4K, the average FPS ranges from 20 (Ultra settings) to 47 (Low settings). Only the Low preset approaches playable territory, while Ultra is well below acceptable levels.

Q: Which component is the limiting factor in this pairing?

A: The GPU. The Intel Arc B390 sits in the 9th percentile among all GPUs, while the CPU is in the 87th percentile. The FPS scaling with resolution and settings is consistent with a GPU-bound scenario.

How This Combo Ranks

In Downfall, this specific combination of the AMD Ryzen 7 9800X3D and Intel Arc B390 ranks 3,303 out of 3,716 tested combos. This places it in the bottom 11% of all combinations, which is a direct reflection of the GPU's limitations. The CPU is a top-tier part, but the GPU drags the overall ranking down significantly.

The combo rank is more than just a number; it contextualizes the measured FPS. A rank of 3,303 out of 3,716 means that 413 other combinations performed worse in this game, but the vast majority performed better. Given that the GPU's percentile is 9, this ranking is expected. The CPU's percentile of 87 does little to boost the combo because Downfall is not CPU-bound at these settings and resolutions.

The data shows that this combo is best suited for low-resolution, low-settings gaming. At 1080p Low, the 106 FPS average is respectable, and even 1080p Medium (87 FPS) is smooth. However, any attempt to push to higher resolutions or quality presets quickly degrades the experience. The rank of 3,303 reflects this reality: the combo is functional for light gaming but not competitive for demanding scenarios.

Measured FPS Breakdown

At 1920x1080, the measured results are as follows. Low settings yield an average of 106 FPS. Medium settings produce an average of 87 FPS, with a minimum of 74 FPS and a maximum of 100 FPS. High settings deliver 71 FPS on average. Ultra settings drop to 44 FPS. The progression from Low to Ultra is a 62 FPS decline, which is substantial but leaves the Low and Medium presets in playable territory.

At 2560x1440, the numbers fall. Low settings average 76 FPS. Medium settings average 62 FPS, with a minimum of 53 FPS and a maximum of 71 FPS. High settings average 51 FPS. Ultra settings average 32 FPS. The drop from 1080p to 1440p is consistent across presets: roughly 30 FPS for Low, 25 FPS for Medium, 20 FPS for High, and 12 FPS for Ultra.

At 3840x2160, the performance is marginal. Low settings average 47 FPS. Medium settings average 39 FPS, with a minimum of 33 FPS and a maximum of 44 FPS. High settings average 32 FPS. Ultra settings average 20 FPS. At 4K, only the Low preset approaches a playable frame rate, and even that is borderline. The Medium preset's minimum of 33 FPS indicates noticeable stutter potential.

The data also shows that min and max FPS are only recorded for Medium settings at each resolution. At 1080p Medium, the range is 74 to 100 FPS. At 1440p Medium, the range is 53 to 71 FPS. At 4K Medium, the range is 33 to 44 FPS. These ranges are tight, suggesting relatively consistent frame pacing at Medium settings, though the absolute values are low at higher resolutions.

Settings Recommendations

Based on the measured rows, the optimal settings for this combo depend on the target resolution and the user's tolerance for frame rate dips.

At 1920x1080, the Low preset provides the highest average FPS at 106, ensuring smooth gameplay. However, the Medium preset at 87 FPS is likely the best balance for visual quality without sacrificing playability, as the minimum of 74 FPS remains well above the threshold for acceptable performance. High settings at 71 FPS are also viable, but Ultra at 44 FPS is not recommended for a consistent experience, especially in a horror game where frame pacing matters.

At 2560x1440, the Low preset at 76 FPS is the safest choice for smooth gameplay. Medium at 62 FPS is acceptable, but the minimum of 53 FPS may be noticeable in fast-moving scenes. High at 51 FPS is marginal, and Ultra at 32 FPS is not recommended. Users who prioritize visual fidelity over frame rate might consider High, but the data suggests that Medium is the practical ceiling at this resolution.

At 3840x2160, the options are limited. Low at 47 FPS is the only preset that approaches playability, but even this is borderline. Medium at 39 FPS, with a minimum of 33 FPS, will likely result in noticeable stutter. High at 32 FPS and Ultra at 20 FPS are not viable for gameplay. For 4K, the data indicates that this combo is not suitable for Downfall at any preset, and users should consider lowering the resolution to 1440p or below.

The overall recommendation is to use the Medium preset at 1080p, which offers 87 FPS with a minimum of 74 FPS, providing a good balance of visual quality and performance. If higher resolutions are required, dropping to Low settings at 1440p (76 FPS) is the next best option. The data does not support playing at 4K with this hardware configuration.