Downfall

The AMD Ryzen 9 9900X3D and NVIDIA GeForce RTX 5080 combination delivers overwhelming performance for Downfall, a horror title that clearly favors GPU throughput at higher resolutions. At 1080p, the 12-core Zen 5 processor with 128 MB of L3 cache pushes frame rates to extreme levels, while the RTX 5080’s 16 GB of GDDR7 memory and 960 GB/s bandwidth take over as the primary bottleneck as resolution climbs. This pairing ranks in the top tier of tested configurations, and the data shows it clears the 60 FPS threshold at every preset and resolution tested, including 4K Ultra.

CPU and GPU Roles

The division of labor between the Ryzen 9 9900X3D and the RTX 5080 shifts noticeably as resolution increases. At 1920x1080, the CPU’s strong single-thread performance—evidenced by a 3DMark single-thread score of 1269—keeps the GPU fed, resulting in a 414 FPS average at Low settings. The gap between Low and Ultra at this resolution is substantial: 414 FPS versus 174 FPS, a 240 FPS drop that highlights how much the GPU’s shading units (10752) and texture rate (879.3 GTexel/s) matter when pixel counts are modest. The CPU is clearly not the limiting factor here; even at Ultra, the 174 FPS result is far above what most displays can show.

Moving to 2560x1440, the GPU’s role becomes more pronounced. The average frame rate at Low drops from 414 FPS at 1080p to 296 FPS, while Ultra falls from 174 FPS to 124 FPS. The scaling between these resolutions is roughly 28-29% for both Low and Ultra, which aligns with the increased pixel workload. The CPU’s 24 threads and 3DMark max-threads score of 13795 still provide ample headroom, but the RTX 5080’s 56.28 TFLOPS FP32 compute is now the dominant factor. The Medium preset shows a tighter range at this resolution—206 FPS minimum to 278 FPS maximum—indicating that frame pacing remains consistent even under variable scene complexity.

At 3840x2160, the GPU is unequivocally the bottleneck. The Low preset yields 184 FPS, which is a 38% reduction from the 1080p Low result of 414 FPS. Ultra at 4K drops to 77 FPS, still comfortably above the 60 FPS playable threshold, but the scaling from 1440p to 4K is steep: 124 FPS down to 77 FPS at Ultra, a 38% penalty. The RTX 5080’s 256-bit memory bus and 16 GB GDDR7 capacity are working near their limits at this resolution, while the CPU’s 89.6 GB/s memory bandwidth is largely irrelevant to the outcome. The data suggests that for 4K gaming, the GPU’s pixel rate of 293.1 GPixel/s and texture rate are the critical specs, not the CPU’s core count or cache.

Preset scaling also reveals the GPU’s headroom. At 1080p, the jump from Low to Medium costs 75 FPS (414 to 339), but the jump from High to Ultra costs 104 FPS (278 to 174). This nonlinear scaling indicates that Ultra settings introduce effects that heavily tax the RTX 5080’s RT cores (84) and tensor cores (336), even at a resolution where the CPU could theoretically drive higher frame rates. At 4K, the same pattern holds: Medium to High costs 28 FPS (151 to 123), while High to Ultra costs 46 FPS (123 to 77). The GPU is clearly the component that determines whether Ultra is viable at higher resolutions.

How This Combo Ranks

In the database of tested combinations, this pairing ranks 201st out of 3716 combos, placing it in the top 5.4% of all configurations. The CPU’s percentile of 91 against all CPUs and the GPU’s percentile of 87 against all GPUs both contribute to this high standing, but the combo rank reflects how well the two components work together in Downfall specifically. The RTX 5080’s average benchmark score of 56083 is slightly higher than the CPU’s average of 54762, suggesting the GPU is the stronger partner in this pairing.

The 201st rank out of 3716 combos indicates that while this is a top-tier setup, there are 200 configurations that deliver higher average frame rates in this game. Given that the 4K Ultra result is 77 FPS, those 200 combos likely include GPUs with more raw compute or higher memory bandwidth. However, the gap between this combo and the top performers is unlikely to be large, as the RTX 5080 already delivers 77 FPS at 4K Ultra—a result that exceeds the 60 FPS playable threshold by 28%. The data shows that this combo is not just playable but highly capable, with headroom for future driver optimizations or game patches that could push 4K Ultra closer to 90 FPS.

Similar Performance Alternatives

The nearest rivals for the CPU and GPU provide useful reference points for builders considering slightly different hardware. For the Ryzen 9 9900X3D, the closest competitor is the Intel Core Ultra 5 245KF, which scores 55093 in the average benchmark—a mere 0.6% lower than the AMD chip’s 54762. The Intel Core Ultra 5 245K is 1.3% ahead, while the Intel Xeon 6505P is 2% behind, and the Intel Core i7-14700F trails by 2.1%. In practical terms, these differences are within run-to-run variance, so a system with any of these CPUs would deliver nearly identical frame rates in Downfall when paired with the RTX 5080.

For the GPU, the RTX 5080’s nearest rival is the AMD Radeon RX 9070 GRE, which scores 57367—2.2% higher than the NVIDIA card’s 56083. The AMD Radeon 8060S is 0.6% behind, the AMD Radeon RX 6750 GRE 12 GB is 0.7% behind, and the AMD Radeon Pro W5700X trails by 2.3%. These delta values are small enough that swapping the RTX 5080 for any of these GPUs would change 4K Ultra frame rates by only a few FPS. The RX 9070 GRE’s slight advantage suggests it might hold 78-79 FPS at 4K Ultra versus the 77 FPS of the RTX 5080, but the difference is negligible in real-world gameplay.

Builders should note that the CPU rivals include both desktop and server parts (the Xeon 6505P), but the benchmark scores indicate they all perform similarly in this game. The GPU rivals are all AMD parts, which means NVIDIA users looking for comparable performance would need to consider the RTX 5080’s feature set—such as DirectX 12 Ultimate support and Vulkan 1.4—as differentiators beyond raw frame rates. The data shows no significant performance cliff between these alternatives, so the choice comes down to platform preferences rather than FPS gains.

The Verdict

This PC can absolutely run Downfall at every resolution and preset tested, with no exceptions. The verdict data lists all four settings—Low, Medium, High, and Ultra—as playable at every resolution from 1080p to 4K, all clearing the 60 FPS playable threshold. The strongest result is at 1080p Ultra with an average of 174 FPS, while the weakest is at 4K Ultra with 77 FPS. Even the minimum frame rates recorded—128 FPS at 4K Medium and 206 FPS at 1440p Medium—are well above the threshold, indicating no stutter or drop below playable levels in the most demanding scenes.

The 4K Ultra result of 77 FPS is particularly notable because it shows this combo has 28% headroom above the 60 FPS threshold. That margin means the system can handle scene complexity spikes without dipping below playable levels, which is critical for a horror game where sudden visual effects can tax the GPU. The 1440p Ultra result of 124 FPS provides more than double the threshold, making it the sweet spot for high-refresh-rate monitors. At 1080p, the 174 FPS Ultra average suggests the CPU is not a limiting factor, and users with 240 Hz displays can expect near-maximum refresh rates even at the highest settings.

FAQ

Q: What is the best preset for 4K gaming on this combo?

A: Ultra is the best setting at 3840x2160, with an average of 77 FPS. This is above the 60 FPS playable threshold, so no compromise is needed.

Q: How does this combo perform at 1080p compared to 4K?

A: At 1080p Ultra, the average is 174 FPS, while at 4K Ultra it drops to 77 FPS. The resolution scaling shows a 56% reduction in frame rate from 1080p to 4K at the same settings.

Q: Does the CPU or GPU limit performance in this game at 1440p?

A: The GPU is the primary limiter at 1440p. The RTX 5080’s 56.28 TFLOPS FP32 compute and 960 GB/s bandwidth determine the 124 FPS Ultra result, while the Ryzen 9 9900X3D’s 3DMark max-threads score of 13795 provides more than enough CPU headroom.

Q: Is the RTX 5080 significantly faster than its nearest rival, the AMD Radeon RX 9070 GRE?

A: No, the RX 9070 GRE is 2.2% faster in average benchmark scores. In Downfall, this would translate to roughly 78-79 FPS versus 77 FPS at 4K Ultra—a difference that is not noticeable in gameplay.

Q: What is the minimum frame rate recorded for this combo?

A: The lowest minimum frame rate recorded is 128 FPS at 4K Medium. The 1440p Medium minimum is 206 FPS, and the 1080p Medium minimum is 288 FPS. All minimums are well above the 60 FPS threshold.

Q: Can this combo handle 4K Medium without frame drops below 60 FPS?

A: Yes, the 4K Medium average is 151 FPS with a minimum of 128 FPS. The minimum is more than double the playable threshold, so even the most demanding scenes stay far above 60 FPS.

Best Settings per Resolution

At 3840x2160, the most demanding preset that stays at or above 60 FPS is Ultra, with an average of 77 FPS. This is the highest quality setting available, and the 77 FPS result provides a 17 FPS buffer above the playable threshold. No setting is too demanding for this resolution.

At 2560x1440, Ultra is also the best setting, delivering 124 FPS on average. This is more than double the 60 FPS threshold, so users can enable all visual features without concern. The 1440p Medium result of 242 FPS shows that even mid-range settings are overkill for most monitors.

At 1920x1080, Ultra remains the best setting with an average of 174 FPS. The minimum frame rate at Medium is 288 FPS, so even the highest settings will not cause drops below 60 FPS. For users with 360 Hz displays, the Low preset at 414 FPS would be the choice, but Ultra’s 174 FPS is still sufficient for all but the most extreme refresh rates.