Downfall

The AMD Ryzen 9 7900X paired with the AMD Radeon RX 6750 XT delivers a compelling 1080p and 1440p experience in Downfall, but the data reveals a sharp performance cliff at 4K Ultra that shifts the bottleneck decisively toward the graphics card. This combination ranks in the 54th percentile of all tested combos, indicating a balanced mid-to-high tier pairing that excels at high refresh rates but struggles with maximum fidelity at 4K.

Resolution Scaling

The measured FPS data shows a predictable and steep decline as resolution increases, but the rate of that decline varies significantly by settings preset. At Low settings, the transition from 1920x1080 to 2560x1440 sees average frame rates drop from 240 FPS to 172 FPS, a 28% reduction. Pushing further to 3840x2160 at Low yields 107 FPS, which is a 55% drop from the 1080p baseline — indicating that even at the lowest graphical load, the GPU is beginning to struggle with the pixel count.

The scaling pattern becomes more pronounced at higher presets. At High settings, the average FPS falls from 161 at 1080p to 115 at 1440p (a 29% drop), then plummets to 72 at 4K (a 55% drop from 1080p). This consistent ~55% reduction from 1080p to 4K across Low and High presets suggests the RX 6750 XT is the primary limiting factor at 4K, as the Ryzen 9 7900X’s 12 cores and 24 threads provide ample headroom to feed the GPU at lower resolutions.

The Ultra preset reveals the most dramatic scaling cliff. At 1080p Ultra, the combo achieves 101 FPS; at 1440p Ultra, it drops to 72 FPS (a 29% reduction); and at 4K Ultra, it collapses to just 45 FPS — a 55% drop from 1080p and a 37% drop from 1440p. This pattern strongly indicates that the RX 6750 XT’s 12 GB of VRAM and 432.0 GB/s memory bandwidth become saturated at 4K Ultra, forcing the rendering pipeline to thrash and severely limiting frame output.

Interestingly, the Medium preset shows the smallest relative drop between 1080p and 1440p: from 197 FPS to 140 FPS, a 29% reduction. However, the jump from 1440p Medium to 4K Medium (140 to 87 FPS) represents a 38% loss, which is the steepest single-step decline in the entire dataset. This suggests that at Medium settings, the 4K resolution itself — rather than the graphical features — is the dominant stressor, and the GPU’s memory subsystem becomes the hard ceiling.

GPU Role

The AMD Radeon RX 6750 XT, built on the RDNA 2.0 architecture with the Navi 22 chip, operates with a base clock of 2150 MHz and a boost clock of 2600 MHz, with a game clock of 2495 MHz. These clocks are relatively high for the RX 6000 series, and the card’s 2560 shading units, 160 texture mapping units, and 64 raster output pipelines provide substantial raw throughput for a 1080p and 1440p card. The 13.31 TFLOPS of FP32 compute power is clearly sufficient for lower resolutions, as evidenced by the 240 FPS result at 1080p Low.

However, the GPU’s memory configuration tells a more nuanced story. The 12 GB of GDDR6 memory on a 192-bit bus delivers 432.0 GB/s of bandwidth, which is ample for 1080p and 1440p gaming but becomes a limiting factor at 4K Ultra. The measured data supports this: at 4K Ultra, the average FPS collapses to 45, while at 4K High it recovers to 72 FPS. This 27 FPS gap between Ultra and High at 4K — compared to a 60 FPS gap at 1080p (101 vs 161 FPS) — suggests that the Ultra preset’s additional memory pressure (likely higher resolution textures and more aggressive post-processing) pushes the card past its effective bandwidth ceiling.

The GPU’s 40 ray tracing cores are present in the architecture, but the RDNA 2.0 implementation is not the focus of this measurement set. The card’s 71st percentile ranking among all GPUs, with an average benchmark score of 26011, places it in the upper-mid tier. Its nearest rivals include the AMD Radeon R9 M395X (0.5% lower score) and the NVIDIA GeForce RTX 3080 Ti Mobile (1.1% higher score), but those comparisons are synthetic benchmarks; in Downfall specifically, the RX 6750 XT demonstrates its strength at 1080p and 1440p while faltering at 4K Ultra.

CPU Role

The AMD Ryzen 9 7900X, a Zen 4 (Raphael) part on the AMD Socket AM5 platform, brings 12 cores and 24 threads with a base clock of 4.70 GHz and a boost clock of 5.60 GHz. This processor’s 64 MB of shared L3 cache and dual-channel DDR5 memory support (83.2 GB/s bandwidth) provide exceptional single-thread and multi-thread performance for gaming workloads. The CPU’s 91st percentile ranking among all processors, with an average benchmark score of 53288, confirms its high-end status.

In Downfall, the CPU’s role is clearly not the bottleneck at lower resolutions. At 1080p Low, the combo hits 240 FPS, which approaches the practical limits of many displays and suggests the CPU is capable of feeding the GPU far beyond what most monitors can show. Even at 1080p Ultra, the 101 FPS result indicates that the Ryzen 9 7900X has ample headroom, as the frame rate is primarily constrained by the GPU’s rendering capabilities rather than CPU processing.

The CPU’s synthetic benchmark results further underscore its gaming prowess. The Cinebench R23 multi-core score of 29300 and single-core score of 2016.5 demonstrate strong all-around performance, while the 3DMark single-thread score of 1093 and 16-thread score of 10972 show balanced scaling. The Geekbench multi-core score of 19267 and single-core score of 2617 reinforce the processor’s ability to handle both lightly-threaded game logic and heavily-threaded background tasks without compromising frame delivery.

The nearest rivals in synthetic CPU benchmarks include the AMD EPYC 7313P (0.2% higher score) and the Intel Core i7-14700F (0.6% lower score), but these comparisons are not directly applicable to Downfall’s measured frames. The data shows that the Ryzen 9 7900X’s high boost clock of 5.60 GHz is particularly valuable for maintaining high average FPS at 1080p, where frame times are short and single-thread performance dominates.

How This Combo Ranks

The AMD Ryzen 9 7900X + AMD Radeon RX 6750 XT combination ranks 1695th out of 3716 tested combos in Downfall, placing it in the 54th percentile. This is a solid mid-pack ranking that reflects the pairing’s balanced capabilities — the CPU is high-end, but the GPU is mid-range, and the combination’s overall performance is dragged down by the GPU’s 4K Ultra limitations.

The rank position suggests that roughly 46% of tested combos outperform this pairing, which is expected given that the RX 6750 XT is an end-of-life product (released March 2022) and the Ryzen 9 7900X (released September 2022) is a generation-old CPU. However, the ranking also indicates that this combo outperforms a significant portion of tested systems, particularly those with older GPUs or less capable CPUs.

The data reveals that this combo’s strength lies in its consistency across settings at 1080p and 1440p. At 1080p, the average FPS ranges from 101 (Ultra) to 240 (Low), and at 1440p, it ranges from 72 (Ultra) to 172 (Low). This wide range of playable frame rates means the combo can adapt to both competitive (Low settings, high refresh) and immersive (High settings, 60+ FPS) play styles without requiring a hardware change.

Measured FPS Breakdown

At 1920x1080, the combo delivers its best results. With Low settings, the average FPS is 240, which is a remarkable result for a mid-range GPU and indicates the CPU is not a limiting factor. Medium settings yield 197 FPS average, with a minimum of 167 FPS and maximum of 226 FPS, showing tight frame pacing. High settings produce 161 FPS average, still well above 144 Hz displays. Ultra settings drop to 101 FPS average, which is playable but shows the GPU is working harder.

At 2560x1440, the performance remains strong but begins to show the GPU’s limits. Low settings achieve 172 FPS average, still excellent for high-refresh monitors. Medium settings deliver 140 FPS average, with minimum and maximum of 119 and 162 FPS respectively. High settings produce 115 FPS average, which is comfortable for 144 Hz. Ultra settings drop to 72 FPS average, which is the first point where the experience falls below 75 FPS and becomes noticeably less smooth for fast-paced action.

At 3840x2160, the combo struggles to maintain high frame rates. Low settings manage 107 FPS average, which is acceptable for 4K but not ideal for competitive play. Medium settings yield 87 FPS average, with a minimum of 74 FPS and maximum of 100 FPS — the variance suggests occasional stutters. High settings drop to 72 FPS average, which is borderline for 4K gaming. Ultra settings collapse to 45 FPS average, which is below the threshold for a smooth horror experience in a game that relies on atmospheric tension.

Settings Recommendations

For the best experience on this combo, the data strongly favors 1440p Medium as the sweet spot. This configuration delivers 140 FPS average with a minimum of 119 FPS, which comfortably exceeds 60 FPS and approaches 144 Hz territory. The frame pacing is tight (119-162 FPS range), ensuring smooth gameplay in Downfall’s horror sequences where sudden frame drops can be jarring. The 1440p resolution also provides a significant visual upgrade over 1080p, making the Medium preset’s graphical compromises worthwhile.

If the user prioritizes maximum visual fidelity and has a 4K display, 4K High at 72 FPS average is the only viable option. This preset maintains playable frame rates above 60 FPS while delivering High-quality textures and effects. However, the 4K Ultra preset at 45 FPS average is not recommended, as the frame rate falls below the 60 FPS threshold and the horror genre’s reliance on smooth motion makes this preset feel sluggish.

For competitive play or high-refresh displays, 1080p Low at 240 FPS is the clear choice, though the visual fidelity is severely reduced. The 1080p High preset at 161 FPS offers a better balance for users with 144 Hz or 165 Hz monitors, providing solid visual quality without sacrificing frame rate. The 1440p Low preset at 172 FPS is another strong option for high-refresh 1440p monitors, though the Medium preset’s 140 FPS is a better trade-off for the visual improvement.

Avoid the 4K Ultra preset entirely, as the 45 FPS average is too low for a smooth horror experience. Similarly, 1440p Ultra at 72 FPS is playable but leaves little headroom for demanding scenes, and the 4K Medium preset’s 87 FPS with a 74 FPS minimum may cause noticeable hitches during intense moments. The data shows that this combo is best utilized at 1080p or 1440p with Medium or High settings, where it consistently delivers frame rates above 100 FPS.