Downfall

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

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor built on the Zen 4 architecture (Phoenix codename) using TSMC's 4 nm process. It operates with a base clock of 4.20 GHz and a boost clock of 4.70 GHz, with a 65 W TDP. The CPU's cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. Memory support is DDR5 with dual-channel configuration, providing 83.2 GB/s of bandwidth.

In synthetic benchmarks, this CPU demonstrates strong single-thread performance with a 3DMark single-thread score of 951 and a Cinebench R23 single-core score of 2943. Multi-threaded results are equally robust: Cinebench R23 multicore reaches 20851, and Passmark multithread scores 24530. The processor's percentile rank among all CPUs is 82, meaning it outperforms most desktop processors in the database.

The nearest rivals in average benchmark score provide context. The AMD Ryzen 7 2700X scores 25057, essentially identical with a 0% delta. The AMD Ryzen AI 5 PRO 340 scores 25099, a -0.1% delta (meaning the 8400F is 0.1% behind). The AMD EPYC 9474F scores 25103, a -0.2% delta, while the AMD Ryzen 5 7500F scores 24993, putting the 8400F 0.3% ahead. This places the 8400F in a tight cluster where the performance differences are negligible in raw compute.

For Downfall, a horror title from 2016, the CPU's 6 cores and 12 threads are more than sufficient to feed the GPU at all tested resolutions. The game's engine does not appear to be heavily threaded, but the 8400F's strong single-core performance ensures that frame pacing remains consistent. At 1080p and 1440p, where CPU overhead is more pronounced relative to GPU load, the boost clock of 4.70 GHz helps maintain high frame rates. The data confirms this: at 1920x1080 Low, the combo achieves 297.7 FPS average, indicating no CPU bottleneck at that setting.

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

The NVIDIA GeForce RTX 3080 is built on the Ampere architecture with the GA102 chip, manufactured on Samsung's 8 nm process. It features 8704 shading units, 272 texture mapping units, and 96 raster operation units. The GPU has 68 RT cores and 272 tensor cores, with a base clock of 1440 MHz and a boost clock of 1710 MHz. Memory consists of 10 GB of GDDR6X on a 320-bit bus, delivering 760.3 GB/s of bandwidth.

The RTX 3080's pixel rate is 164.2 GPixel/s, and its texture rate is 465.1 GTexel/s. FP32 performance is 29.77 TFLOPS, with FP16 at the same figure (1:1 ratio). The card is rated at 320 W TDP and uses a single 12-pin power connector, with a suggested PSU of 700 W. It supports PCIe 4.0 x16 and has a dual-slot form factor.

In the benchmark database, the RTX 3080 holds a percentile rank of 80 among all GPUs. Its nearest rivals include the AMD Radeon Pro Duo with an average score of 35860 (-0.2% delta), the AMD Radeon 880M at 35646 (0.4% delta, meaning the 3080 is 0.4% ahead), the AMD Radeon RX 7900 GRE at 36101 (-0.9% delta), and the NVIDIA GeForce RTX 5070 Ti Mobile at 35435 (1% delta, meaning the 3080 is 1% ahead). The 10 GB VRAM is a key consideration for Downfall at higher settings and resolutions, as the game's texture requirements scale with resolution.

The GPU's performance in Downfall shows a clear pattern: at 4K Ultra, the average FPS drops to 55.6, while at 4K High it rises to 86.9. This suggests that the Ultra preset pushes the RTX 3080's memory bandwidth and compute capacity near their limits. The 19 Gbps effective memory speed helps at lower settings, where the game becomes less demanding on the memory subsystem.

FAQ

Q: What is the CPU's percentile ranking among all tested processors?

A: The AMD Ryzen 5 8400F ranks in the 82nd percentile among all CPUs in the database, indicating it outperforms roughly four out of five processors tested.

Q: How does the RTX 3080 compare to its nearest GPU rival in average benchmark score?

A: The RTX 3080 has an average benchmark score of 35787. Its closest rival, the AMD Radeon RX 7900 GRE, scores 36101, which is -0.9% different, meaning the 3080 is slightly behind. The NVIDIA GeForce RTX 5070 Ti Mobile scores 35435, putting the 3080 1% ahead.

Q: What is the highest average FPS achieved by this combo in Downfall?

A: The highest recorded average FPS is 297.7, achieved at 1920x1080 resolution with Low settings.

Q: What is the lowest average FPS achieved by this combo in Downfall?

A: The lowest recorded average FPS is 55.6, achieved at 3840x2160 resolution with Ultra settings.

Q: How does the CPU's single-thread performance compare to its multi-thread performance in Cinebench R23?

A: The Cinebench R23 single-core score is 2943, while the multicore score is 20851. The multicore score is roughly 7 times higher, reflecting the benefit of 12 threads over a single thread.

Q: What is the memory bandwidth of the GPU, and how does it affect 4K performance?

A: The RTX 3080 has a memory bandwidth of 760.3 GB/s. At 3840x2160, the average FPS ranges from 55.6 at Ultra to 131.2 at Low, indicating that the bandwidth is sufficient for lower settings but becomes a constraint at Ultra where higher texture detail demands more memory throughput.

How This Combo Ranks

The combination of AMD Ryzen 5 8400F and NVIDIA GeForce RTX 3080 ranks 526th out of 1741 tested combos in Downfall. This places the combo in the upper portion of the database, roughly in the 70th percentile of all system configurations. The rank reflects the balance between the CPU's strong compute capabilities and the GPU's high-end performance.

The CPU's average benchmark score of 25064 places it in a tight cluster with rivals like the Ryzen 7 2700X (25057) and Ryzen 5 7500F (24993). The differences are fractions of a percent, meaning the CPU is not the differentiating factor in this ranking. Similarly, the GPU's average score of 35787 is close to the Radeon RX 7900 GRE (36101) and RTX 5070 Ti Mobile (35435), with deltas under 1%.

The 526th rank out of 1741 combos suggests that while this is a capable pairing, there are over 500 configurations that achieve higher performance in Downfall. The bottleneck analysis from the measured FPS data indicates that at 1080p and 1440p, the combo delivers excellent frame rates, but at 4K Ultra, the GPU becomes the limiting factor. The rank likely reflects the fact that many higher-end GPUs (e.g., those with more VRAM or higher compute) can push 4K Ultra to higher frame rates, while this combo's 10 GB VRAM and 29.77 TFLOPS are sufficient for most settings but not the absolute maximum.

Measured FPS Breakdown

The measured FPS data covers three resolutions and four settings presets, providing a complete picture of performance scaling.

1920x1080 (1080p):

• Low: 297.7 FPS average
• Medium: 243.2 FPS average
• High: 202.4 FPS average
• Ultra: 128.3 FPS average

At 1080p, the combo is clearly GPU-bound at lower settings, with the CPU's single-thread performance allowing the RTX 3080 to reach nearly 300 FPS at Low. The step from Medium to High costs about 41 FPS, while High to Ultra costs 74 FPS, indicating that Ultra settings introduce a heavy rendering load.

2560x1440 (1440p):

• Low: 215.5 FPS average
• Medium: 175.5 FPS average
• High: 142.2 FPS average
• Ultra: 90.5 FPS average

At 1440p, the frame rates scale down proportionally. The gap between Low and Ultra is 125 FPS, with the Ultra preset dropping below 100 FPS. The data shows that the GPU's 10 GB VRAM is adequate at this resolution across all settings, as the frame rate drop is consistent with the increased pixel count.

3840x2160 (4K):

• Low: 131.2 FPS average
• Medium: 110.4 FPS average
• High: 86.9 FPS average
• Ultra: 55.6 FPS average

At 4K, the RTX 3080's limitations become apparent. Low settings still deliver over 130 FPS, which is impressive, but Ultra drops to 55.6 FPS, which may be borderline for smooth gameplay depending on the display's refresh rate. The step from High to Ultra is 31 FPS, the largest single drop in the dataset, suggesting that Ultra settings at 4K exceed the GPU's comfortable performance envelope.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend on the target resolution and desired frame rate.

For 1920x1080, all settings provide playable frame rates. Ultra delivers 128.3 FPS average, which is above 120 FPS and suitable for high-refresh monitors. If the display supports 144 Hz or higher, Medium (243.2 FPS) or High (202.4 FPS) provide ample headroom. Low (297.7 FPS) is only necessary for competitive play where maximum frame rate is prioritized over visual fidelity.

At 2560x1440, the recommendation shifts. High (142.2 FPS) is the best balance, as it stays above 140 FPS while offering better visuals than Medium (175.5 FPS) or Low (215.5 FPS). Ultra at 90.5 FPS is playable but may not be ideal for smooth motion on high-refresh displays. For a 144 Hz monitor, High is the recommended preset; for 60 Hz, Ultra is acceptable.

For 3840x2160, the data suggests Medium (110.4 FPS) as the sweet spot for a 60 Hz display, while High (86.9 FPS) is still above 60 FPS and provides better image quality. Ultra (55.6 FPS) is below the 60 FPS threshold and may result in noticeable stutter on standard displays. Low (131.2 FPS) is overkill for most 4K panels, which typically cap at 60 Hz or 120 Hz. The recommended preset for 4K is Medium for a smooth experience, with High as an option if the display has VRR (variable refresh rate) support and the user tolerates occasional drops below 90 FPS.