Downfall

The AMD Ryzen 5 2600 paired with the NVIDIA GeForce RTX 4080 produces a fascinating split personality in Downfall. At lower resolutions, the aging six-core processor holds the system back, while at 4K, the GPU takes over and delivers surprisingly smooth performance. This combination is a study in bottlenecks, and the measured data reveals exactly where the balance shifts.

Resolution Scaling

The FPS drop from 1080p to 4K is highly uneven across settings, which reveals a clear handoff between CPU and GPU limitation. At Low settings, the average frame rate falls from 250 FPS at 1920x1080 to 178 FPS at 3840x2160, a drop of 72 FPS or roughly 29%. This is a relatively modest decline, indicating that at Low settings, even at 4K, the system is still partly limited by the processor. The RTX 4080 has plenty of headroom left, but the Ryzen 5 2600 simply cannot feed it enough frames to go much higher.

The picture changes dramatically at Ultra settings. The system drops from 168 FPS at 1080p to 74 FPS at 4K, a slide of 94 FPS, representing a 56% reduction. This steep curve shows that the Ultra preset places a heavy load on the GPU, making it the definitive limiting factor at higher resolutions. The gap between Low and Ultra at 4K is a massive 104 FPS (178 vs. 74), while the same gap at 1080p is only 82 FPS (250 vs. 168). This widening delta confirms that the GPU's workload scales aggressively with resolution, while the CPU's limitation stays roughly constant.

Looking at the medium preset, which is the only one with min/max data, we see a similar trend. At 1080p, the average is 233 FPS with a minimum of 198 and a maximum of 268. At 1440p, that average drops to 208 FPS with a minimum of 177 and a maximum of 239. At 4K, the average falls further to 145 FPS, with the minimum at 123 and the maximum at 167. The frame time consistency holds up well; the spread between min and max remains tight relative to the average, suggesting that neither component is producing severe stutters—just a general reduction in throughput.

The data indicates that 1440p is the sweet spot for this pairing. At High settings, the system produces 191 FPS, which is only 26 FPS less than at 1080p but 72 FPS more than at 4K. This suggests that the CPU is still feeding the GPU adequately at this resolution, while the GPU is being utilized far more effectively than at 1080p, where the processor caps performance.

CPU Role

The AMD Ryzen 5 2600 is a 6-core, 12-thread processor from the 2000 series, built on the Zen architecture with a 12 nm process node. Its base clock is 3.40 GHz and it boosts to 3.90 GHz. In synthetic benchmarks, it scores 1248 in Cinebench R15 multi-core and 157.3 in single-core, which places it at the 75th percentile of all CPUs. Its average benchmark score is 21484, which is remarkably close to its nearest rivals: the Intel Core Ultra 5 228V scores 21440 (0.2% ahead), the Intel Core i9-11900H scores 21367 (0.5% ahead), and the Intel Xeon D-1746TER scores 21635 (0.7% behind this CPU). This puts the Ryzen 5 2600 in a competitive position for general compute, but its single-thread performance is what matters for gaming.

In Downfall, the CPU's influence is most visible at 1080p. The fact that Low settings at 1080p only reach 250 FPS, while the RTX 4080 is capable of far more in other scenarios, points to a processor bottleneck. At 4K Ultra, the CPU is largely off the hook, as the GPU is clearly the constraint. However, at 4K Low, the 178 FPS result is still high enough to suggest that the CPU is contributing to the ceiling. The 12 threads and 16 MB of shared L3 cache are sufficient for this horror title, but the modest 3.90 GHz boost clock limits how many draw calls the CPU can process per second.

The combination rank of 681 out of 3716 combos indicates that this pairing is in the top 18% of tested configurations, which is respectable given the age of the processor. The CPU's percentile rank of 75% against all CPUs, combined with the GPU's 86th percentile, shows that the processor is the weaker link in this duo. The data does not show a scenario where the CPU completely cripples performance; rather, it caps the maximum achievable frame rate at lower resolutions. For a 60 Hz or 144 Hz monitor, this is a non-issue, but for a 240 Hz display, the 1080p results would leave performance on the table.

Settings Recommendations

The measured rows provide a clear hierarchy for visual quality versus performance. At 4K, the Ultra preset produces an average of 74 FPS, which is playable but not ideal for a smooth experience. The High preset at 4K jumps to 119 FPS, a 61% improvement over Ultra, with presumably a minor visual downgrade. This is the recommended setting for 4K displays, as it comfortably exceeds 60 FPS and approaches 120 FPS, making it suitable for high-refresh-rate 4K panels.

For 1440p, the High preset delivers 191 FPS, which is excellent for competitive play, while Ultra drops to 120 FPS—still very smooth. The Medium preset at 1440p offers 208 FPS, but the jump from Medium to High is only a 17 FPS loss (208 to 191), making High a better value for the visual uplift. The data suggests that High is the sweet spot at 1440p, balancing the GPU load with the CPU's ability to feed frames.

At 1080p, the situation is different. The Ultra preset yields 168 FPS, while High yields 217 FPS. The gap between Low (250 FPS) and High (217 FPS) is only 33 FPS, which is small compared to the 82 FPS gap between Low and Ultra. This indicates that the CPU bottleneck is so severe at 1080p that moving from High to Ultra costs 49 FPS (217 to 168), but moving from Low to High only costs 33 FPS. For 1080p users, the High preset is the most efficient, as it avoids the heaviest GPU settings that provide diminishing returns at this resolution. The Medium preset at 1080p, with an average of 233 FPS and a minimum of 198 FPS, is a solid choice for those prioritizing frame rate above all else.

FAQ

Q: What is the best resolution for this CPU/GPU combo in Downfall?

A: The data shows that 2560x1440 provides the best balance. At High settings, it delivers 191 FPS, which is only 26 FPS less than 1080p but 72 FPS more than 4K. The CPU bottleneck at 1080p is evident, while 4K puts too much strain on the GPU, making 1440p the optimal middle ground.

Q: Is the Ryzen 5 2600 a bottleneck for the RTX 4080 in this game?

A: Yes, but only at lower resolutions. At 1080p, the maximum average FPS across all settings is 250, which suggests the CPU is limiting performance. At 4K, the GPU becomes the bottleneck, as seen in the 74 FPS result at Ultra. The CPU's single-core score of 157.3 in Cinebench R15 is modest, and its average benchmark score of 21484 is nearly identical to the Intel Core i9-11900H, indicating it is a mid-tier performer.

Q: How much FPS do I gain by dropping from Ultra to High at 4K?

A: The gain is substantial. At 3840x2160, the Ultra preset averages 74 FPS, while High averages 119 FPS. This 45 FPS increase (60.8%) comes with a significant reduction in GPU load, making High the preferred preset for 4K.

Q: Does the RTX 4080's 16 GB of VRAM matter for Downfall?

A: The measured data does not indicate any VRAM-related performance cliffs. The GPU's memory bandwidth is 716.8 GB/s, and the card has 16 GB of GDDR6X memory. Since the frame rates scale consistently with settings and resolution, there is no evidence of VRAM capacity being a limiting factor in this game.

Q: What kind of frame time consistency can I expect?

A: The only rows with min/max data are the Medium presets. At 1080p, the average is 233 FPS with a minimum of 198 and a maximum of 268, a spread of 70 FPS. At 1440p, the average is 208 FPS with a minimum of 177 and maximum of 239, a spread of 62 FPS. At 4K, the average is 145 FPS with a minimum of 123 and maximum of 167, a spread of 44 FPS. This tightening of the spread at higher resolutions indicates more consistent frame pacing as the GPU becomes the primary limiter.

Q: How does this combo rank against other tested configurations?

A: The combination ranks 681 out of 3716 tested combos, placing it in the top 18.3% of all pairings. This is a strong result, especially considering the CPU's release date of 2018-04-18 and its 6-core/12-thread configuration.

GPU Role

The NVIDIA GeForce RTX 4080 is a powerhouse built on the Ada Lovelace architecture with a 5 nm process node. It features 9728 shading units, 304 TMUs, and 112 ROPs, along with 76 ray-tracing cores and 304 tensor cores. The GPU clocks at 2205 MHz base and 2505 MHz boost, with memory running at 1400 MHz (22.4 Gbps effective). Its 16 GB of GDDR6X memory on a 256-bit bus provides 716.8 GB/s of bandwidth.

In Downfall, the GPU's immense power is evident at 4K. The jump from Ultra (74 FPS) to High (119 FPS) is a 60.8% improvement, showing that the Ultra preset includes settings that are disproportionately heavy for the GPU. The card's pixel rate of 280.6 GPixel/s and texture rate of 761.5 GTexel/s are more than sufficient for this title. Its FP32 performance of 48.74 TFLOPS ensures that compute-heavy effects do not become a bottleneck.

The GPU's average benchmark score is 54247, which places it at the 86th percentile of all GPUs. Its nearest rivals are remarkably close: the RTX 4080 SUPER scores 54209 (0.1% behind), the AMD Radeon Pro W5700X scores 54828 (1.1% ahead), and the AMD Radeon RX 6750 GRE 12 GB scores 55698 (2.6% ahead). This tight clustering means the RTX 4080 is not uniquely positioned in raw compute, but its real-world gaming results in Downfall are strong. The 3DMark Steel Nomad DX12 score of 6567 and Passmark G3D score of 34457 confirm its high-end status.

At 1080p, the GPU is partially idle due to the CPU bottleneck, as evidenced by the 250 FPS cap at Low settings. However, at 4K, the GPU is fully utilized, and the 178 FPS at Low settings shows that even the most demanding resolution is handled with ease when settings are reduced. The RTX 4080's 320 W TDP and triple-slot cooler are justified by these results; the card has the thermal and power headroom to sustain high clocks under load.

Measured FPS Breakdown

1920x1080 (1080p):

• Low: 250 FPS average
• Medium: 233 FPS average, 198 FPS minimum, 268 FPS maximum
• High: 217 FPS average
• Ultra: 168 FPS average

At 1080p, the CPU is the limiting factor. The spread from Low to Ultra is 82 FPS, with Low hitting the 250 FPS ceiling. The Medium preset's minimum of 198 FPS ensures that even in heavy scenes, the frame rate stays above 144 Hz. High is the best balance, offering 217 FPS without the extreme GPU load of Ultra.

2560x1440 (1440p):

• Low: 223 FPS average
• Medium: 208 FPS average, 177 FPS minimum, 239 FPS maximum
• High: 191 FPS average
• Ultra: 120 FPS average

1440p shows a more balanced workload. Low drops to 223 FPS, a 10.8% reduction from 1080p, indicating the GPU is beginning to take on more work. High at 191 FPS is still excellent for high-refresh monitors. Ultra at 120 FPS is the first preset to dip below the 144 FPS threshold, making High the recommended choice for competitive play.

3840x2160 (4K):

• Low: 178 FPS average
• Medium: 145 FPS average, 123 FPS minimum, 167 FPS maximum
• High: 119 FPS average
• Ultra: 74 FPS average

4K is where the RTX 4080 shines. Even at Low, the 178 FPS result is impressive for a 4K resolution. The Medium preset's 145 FPS average with a 123 FPS minimum shows that the GPU can handle 4K gaming with headroom to spare. High at 119 FPS is the practical ceiling for a smooth experience, while Ultra at 74 FPS is only suitable for 60 Hz displays. The 45 FPS gap between High and Ultra at 4K is the largest single-settings step in the entire dataset, confirming that Ultra includes effects that disproportionately impact the GPU.