Downfall

The data for Downfall on the AMD Ryzen 5 5500 and AMD Radeon RX 6650 XT combination shows a system that scales predictably with resolution, but with a distinct performance cliff at the highest settings. The measured FPS across the three resolutions reveals a configuration where the GPU is the primary workload driver, yet the CPU’s architectural limits become apparent in specific scenarios. This analysis breaks down the measured results, contextualizes them with the component’s synthetic benchmarks, and answers the most pressing questions about this pairing.

Resolution Scaling

The transition from 1920x1080 to 3840x2160 demonstrates a classic GPU-bound scaling curve, but the shape of that curve is heavily dependent on the quality preset. At 1920x1080 High, the system delivers 134.4 FPS. Moving to 2560x1440 High drops that to 93.9 FPS, a 30.2% reduction. The jump to 3840x2160 High yields 61.2 FPS, which is another 34.8% reduction from 1440p. This pattern is consistent with the GPU’s rendering load increasing quadratically with pixel count; the RX 6650 XT’s 8 GB of GDDR6 memory and 280.3 GB/s bandwidth are being taxed progressively.

However, the Ultra preset tells a different story. At 1920x1080 Ultra, the system produces 85.7 FPS. At 2560x1440 Ultra, it falls to 61.8 FPS (a 27.9% drop), and at 3840x2160 Ultra, it collapses to 39.3 FPS (a 36.4% drop from 1440p). The gap between High and Ultra at 4K is stark: 61.2 FPS versus 39.3 FPS, a 35.8% performance penalty. This suggests that the Ultra preset introduces effects that are disproportionately expensive at high resolutions, likely related to memory pressure or shading complexity that the 128-bit memory bus cannot sustain.

The Low preset shows the least scaling sensitivity. From 199.8 FPS at 1080p to 141.6 FPS at 1440p (a 29.1% drop) and then to 89.5 FPS at 4K (a 36.8% drop from 1440p), the relative declines are smoother. The fact that Low at 4K (89.5 FPS) is faster than Ultra at 1080p (85.7 FPS) is telling: the preset choice has a larger impact on performance than the resolution change itself. This indicates that the limiting component is the GPU’s fillrate and memory subsystem, not the CPU, since the workload scales almost entirely with pixel throughput and shader complexity.

GPU Role

The RX 6650 XT, built on the RDNA 2.0 architecture, operates with a base clock of 2055 MHz and a boost clock of 2635 MHz. The game clock is rated at 2410 MHz, and the measured results align with a GPU that is running near its designed performance envelope. The card’s FP32 throughput of 10.79 TFLOPS and its 2048 shading units are directly relevant to Downfall’s rendering demands, which appear to be heavily shader-bound at higher presets.

The VRAM configuration is a critical factor. With 8 GB of GDDR6 on a 128-bit bus, the memory bandwidth of 280.3 GB/s is moderate by modern standards. In the 4K Ultra test, the average FPS of 39.3 suggests the GPU is not only compute-limited but potentially memory-limited, as the higher preset likely increases texture and geometry data beyond what the bus can efficiently feed. The fact that 4K Low (89.5 FPS) is 2.3 times faster than 4K Ultra (39.3 FPS) points to a scenario where reducing the preset alleviates memory pressure and shader complexity, allowing the GPU to reach its raw pixel throughput limits.

The GPU’s benchmark scores corroborate its mid-range positioning. The 3DMark Steel Nomad DX12 score of 1859 and a Passmark G3D score of 17166 place it in the 72nd percentile of all GPUs. Its nearest rivals include the AMD Radeon RX 6800M (0% delta) and the Intel Arc A370M (-0.5% delta), indicating that the RX 6650 XT is a solid mainstream performer. In Downfall, the GPU is clearly the dominant factor in FPS variation across settings, as the CPU’s benchmark scores do not fluctuate with resolution.

FAQ

Q: Why does 4K Ultra perform so much worse than 4K High?

A: The gap is 61.2 FPS versus 39.3 FPS, a 35.8% drop. This indicates that the Ultra preset introduces rendering features that disproportionately increase the load on the GPU’s 2048 shading units and its 128-bit memory interface, likely pushing the 8 GB VRAM buffer and 280.3 GB/s bandwidth to their limits.

Q: Is the Ryzen 5 5500 bottlenecking the RX 6650 XT in this game?

A: Based on the measured FPS, the CPU is not the primary limiter at higher resolutions. The scaling from 1080p to 4K follows a mostly GPU-bound pattern. However, the CPU’s single-thread performance, as indicated by a 3DMark single-thread score of 836, could constrain frame pacing in scenes with heavy draw calls, though the data does not show a hard bottleneck.

Q: What is the best preset for 1440p gaming with this combo?

A: At 2560x1440, the High preset delivers 93.9 FPS, while Medium yields 114.7 FPS and Low reaches 141.6 FPS. Ultra drops to 61.8 FPS. For a balance of visual quality and smoothness, High is the strongest choice, as it stays well above typical 60 FPS thresholds.

Q: How does the RX 6650 XT compare to its closest rivals in synthetic tests?

A: The GPU’s average benchmark score of 29024 is nearly identical to the AMD Radeon RX 6800M (29011, 0% delta) and slightly below the Intel Arc A370M (29175, -0.5% delta). This suggests the RX 6650 XT is a direct competitor in the mid-range segment, and Downfall’s results reflect that positioning.

Q: Can this system handle 4K gaming in Downfall?

A: Yes, but with caveats. At 4K Low, it achieves 89.5 FPS, and at 4K Medium, 73.9 FPS. At 4K High, it drops to 61.2 FPS, which is playable but close to the edge. 4K Ultra is not viable at 39.3 FPS.

Q: Does the CPU’s multi-threaded performance matter for this game?

A: Downfall appears to be more GPU-sensitive. The CPU’s Cinebench R23 multi-core score of 16429 and 3DMark max-thread score of 5411 indicate strong multi-threading, but the measured FPS scaling is much more closely tied to GPU settings. The 6-core, 12-thread configuration is adequate, as evidenced by the consistent frame rates across resolutions.

Measured FPS Breakdown

At 1920x1080, the system shows a wide spread across presets. Low settings produce 199.8 FPS, Medium 160.5 FPS, High 134.4 FPS, and Ultra 85.7 FPS. The difference between Low and Ultra is 114.1 FPS, or 57.1% of the Low score, demonstrating that the Ultra preset is substantially more demanding. The jump from Medium to High is 26.1 FPS (16.3% reduction), while the jump from High to Ultra is 48.7 FPS (36.3% reduction). This non-linear progression suggests that Ultra enables features that are not just incremental.

At 2560x1440, the pattern continues with lower absolute numbers. Low hits 141.6 FPS, Medium 114.7 FPS, High 93.9 FPS, and Ultra 61.8 FPS. The relative gap between High and Ultra widens: 93.9 FPS versus 61.8 FPS is a 34.2% drop. Compared to 1080p, the 1440p results show a consistent 29-32% reduction across Low, Medium, and High, but only a 27.9% reduction for Ultra. This indicates that at 1440p, the Ultra preset is not as disproportionately punishing as it is at 1080p, but it still remains the least playable option.

At 3840x2160, the results are the most telling. Low achieves 89.5 FPS, Medium 73.9 FPS, High 61.2 FPS, and Ultra 39.3 FPS. The drop from High to Ultra is 21.9 FPS, a 35.8% reduction, which is the largest relative penalty across any resolution. The difference between 1080p and 4K at Low is 110.3 FPS (55.2% reduction), while at Ultra it is 46.4 FPS (54.2% reduction). This symmetry suggests that the GPU is the main scaling factor, but the Ultra preset hits a performance wall at 4K that is not present at lower resolutions.

CPU Role

The AMD Ryzen 5 5500 is a 6-core, 12-thread processor based on the Zen 3 architecture, running at a base clock of 3.60 GHz and a boost clock of 4.20 GHz. It has a 16 MB L3 cache and supports dual-channel DDR4 memory with a bandwidth of 51.2 GB/s. In the context of Downfall, the CPU’s role is secondary, as the game’s FPS scales more with GPU settings than with CPU load.

The CPU’s benchmark results place it in the 79th percentile of all CPUs, with an average benchmark score of 20875. Its nearest rival is the Intel Core i5-12500 (20897, -0.1% delta), indicating near-identical synthetic performance. The 3DMark scores show a clear scaling pattern: 1645 for 2 threads, 3151 for 4 threads, 4593 for 8 threads, and 5411 for max threads. This suggests that the processor gains significant performance from additional threads, but the single-thread score of 836 is modest.

In Downfall, the measured FPS does not show signs of CPU bottlenecking. At 1080p Low, the system reaches 199.8 FPS, which is high enough that the CPU could theoretically become a limit, but the fact that 4K Low still hits 89.5 FPS indicates that the GPU is handling the bulk of the work. The CPU’s Cinebench R23 multi-core score of 16429 and single-core score of 2319 are respectable, but they do not translate into a frame rate advantage in this game, as the engine appears to be optimized for GPU throughput.

The CPU’s 65W TDP and 7nm process node from TSMC suggest an efficient part that does not produce excessive heat, which is beneficial for sustained gaming sessions. Its PCIe Gen 3 interface is a minor consideration, as the RX 6650 XT uses a PCIe 4.0 x8 bus, but the measured results show no adverse impact from this pairing. Overall, the Ryzen 5 5500 provides sufficient processing power to feed the RX 6650 XT, with the GPU being the definitive factor in performance across the tested resolutions and settings.