Downfall

The AMD Ryzen 9 8945HX paired with the NVIDIA GeForce RTX 5070 Mobile delivers a compelling 1080p and 1440p experience in Downfall, but the data reveals a sharp performance cliff at 4K Ultra settings. This combination sits in the 55th percentile of tested combos for this title, suggesting a balanced pairing that is ultimately constrained by the GPU's memory and shader capabilities at higher resolutions.

Resolution Scaling

The measured FPS data shows a clear and predictable pattern: performance degrades significantly as resolution increases, but the rate of that degradation varies heavily by preset. At 1080p Low, the combo produces 223 FPS. Moving to 1440p Low drops that to 159 FPS, a 29% reduction, while 4K Low yields 99 FPS, which is 56% lower than the 1080p baseline. This scaling indicates that at lower settings, the CPU and GPU are both heavily utilized, but the frame rate remains high enough to suggest the GPU is not the sole bottleneck.

The picture changes dramatically at Ultra settings. The 1080p Ultra average is 93 FPS, which drops to 67 FPS at 1440p (a 28% decrease) and then plummets to 42 FPS at 4K (a 55% decrease from 1440p). This steep 4K cliff, where the frame rate nearly halves again, strongly implies that the 8 GB VRAM buffer is being saturated. The RTX 5070 Mobile’s 8 GB of GDDR7 memory on a 128-bit bus, offering 384.0 GB/s of bandwidth, is the limiting factor at 4K Ultra, rather than raw compute power. The data supports this: 4K High (66 FPS) is 57% faster than 4K Ultra (42 FPS), a massive gap that points to memory capacity and bandwidth being overwhelmed by the highest texture and shadow quality settings.

At Medium settings, the scaling is more linear. The 1080p Medium average is 182 FPS with a minimum of 155 FPS and maximum of 210 FPS. At 1440p Medium, the average falls to 130 FPS (a 29% drop), and at 4K Medium it reaches 81 FPS (a 38% drop from 1440p). This suggests that Medium settings are the sweet spot for maintaining a stable experience across all resolutions, as the memory pressure is reduced enough to avoid the catastrophic 4K Ultra performance collapse. The data indicates that the limiting component shifts from the GPU’s compute units at 1080p to its memory subsystem at 4K.

How This Combo Ranks

In Downfall, this specific combo ranks 2058th out of 3716 tested combinations, placing it in the 55th percentile overall. This is a mid-pack result for a modern high-end mobile CPU and a current-generation GPU. However, the ranking does not tell the whole story, as it aggregates performance across all settings and resolutions. The data shows that the combo is far more competitive at 1080p and 1440p than the overall rank suggests, with the 4K Ultra result dragging down its aggregate standing.

The CPU’s standalone benchmarks place it in the 95th percentile of all CPUs, with an average benchmark score of 76212. Its nearest rivals include the Intel Core Ultra 9 285HX (deltaPct 0.1, meaning this AMD chip is 0.1% faster), the AMD EPYC Embedded 8224P (deltaPct -0.4, meaning this chip is 0.4% slower), and the AMD Ryzen 9 9950X3D (deltaPct 0.6, meaning this chip is 0.6% faster). This indicates the Ryzen 9 8945HX is a top-tier mobile processor, but its performance in Downfall is clearly capped by the GPU at higher resolutions.

The GPU’s standalone benchmarks place it in the 75th percentile of all GPUs, with an average score of 29928. Its nearest rivals are the NVIDIA GeForce RTX 3070 Ti (deltaPct -0.1, meaning this GPU is 0.1% slower), the NVIDIA GeForce RTX 2080 Ti (deltaPct 0.5, meaning this GPU is 0.5% faster), and the AMD Radeon RX 6800 (deltaPct -0.6, meaning this GPU is 0.6% slower). This suggests the RTX 5070 Mobile offers desktop-class performance from the previous generation, which explains its strong 1080p and 1440p results. The combo rank of 2058 indicates that while each component is individually strong, the pairing is not optimized for the most demanding 4K Ultra settings in Downfall.

GPU Role

The NVIDIA GeForce RTX 5070 Mobile is a 50-series chip based on the Blackwell 2.0 architecture, built on a 5 nm process by TSMC. It features 4608 shading units, 144 texture mapping units, and 48 raster output pipelines, along with 36 ray tracing cores and 144 tensor cores. The chip’s base clock is 907 MHz with a boost clock of 1425 MHz, and it delivers 13.13 TFLOPS of FP32 compute. These specifications are competitive, but the data shows that raw compute is not the primary constraint in Downfall.

The GPU’s memory configuration is the critical factor. It has 8 GB of GDDR7 memory on a 128-bit bus, providing 384.0 GB/s of bandwidth. In Downfall, the 4K Ultra setting appears to exceed this memory capacity, causing the average FPS to drop to 42. The 4K High setting, with an average of 66 FPS, is 57% faster, suggesting that the Ultra preset uses textures or effects that require more than 8 GB. The GPU’s pixel rate of 68.40 GPixel/s and texture rate of 205.2 GTexel/s are sufficient for 1080p and 1440p, but the 4K resolution requires more memory throughput than the 128-bit bus can provide. The data implies that this GPU is well-suited for 1440p gaming, where it averages over 100 FPS on High settings, but 4K Ultra is beyond its capabilities.

The GPU’s PassMark G3D score of 20355 and Geekbench OpenCL score of 122238 corroborate its mid-range positioning. Its percentile rank of 75 vs all GPUs, combined with its proximity to the RTX 3070 Ti in average score, suggests it is a solid performer for 1440p. However, the 4K Ultra result in Downfall is a clear outlier, indicating a hard limit imposed by the memory subsystem rather than the shader cores.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of the combo’s behavior across three resolutions and four settings presets. At 1920x1080, the combo delivers exceptional performance: Low averages 223 FPS, Medium averages 182 FPS (min 155, max 210), High averages 149 FPS, and Ultra averages 93 FPS. This shows that at 1080p, the GPU is rarely the bottleneck, and the high frame rates suggest the CPU is keeping up with the GPU’s output.

At 2560x1440, the performance remains strong but begins to show the GPU’s limitations. Low averages 159 FPS, Medium averages 130 FPS (min 111, max 150), High averages 107 FPS, and Ultra averages 67 FPS. The drop from 1080p to 1440p is consistent across settings, averaging around 28-30%, which is expected for a resolution increase. The Ultra setting at 67 FPS is still playable, but the margin for error is smaller.

At 3840x2160, the data reveals the GPU’s weakness. Low averages 99 FPS, Medium averages 81 FPS (min 69, max 93), High averages 66 FPS, and Ultra averages 42 FPS. The Ultra result is the only sub-60 FPS average in the entire dataset, and it is 55% slower than the 1440p Ultra result. This is not a linear scaling from the other settings; it is a cliff. The Medium setting’s minimum of 69 FPS and maximum of 93 FPS shows that even at 4K, the combo can maintain a playable frame rate, but the Ultra preset pushes the GPU over the edge. The data strongly suggests that 4K Ultra is not a viable setting for this combo, while 4K Medium and High are acceptable with averages of 81 and 66 FPS respectively.

Settings Recommendations

Based on the measured FPS rows, the optimal experience depends on the target resolution. For 1920x1080, the Ultra preset is playable at an average of 93 FPS, but the Medium preset offers a significant improvement to 182 FPS with a minimum of 155 FPS. Given that Medium is 96% faster than Ultra, the Medium preset provides a smoother and more consistent experience, especially for a horror game where frame pacing is critical. High at 149 FPS is also an excellent choice, offering a balance between visual quality and performance.

For 2560x1440, the High preset at 107 FPS is the recommended choice, as it provides a substantial visual upgrade over Medium (130 FPS) while remaining well above the 60 FPS threshold. The Ultra preset at 67 FPS is borderline, but the 60 FPS average and the potential for drops make High the safer option. The data shows that Medium at 130 FPS is overkill for most displays, so High offers the best visual fidelity per frame.

For 3840x2160, the Medium preset at 81 FPS is the only reasonable choice for a smooth experience. The High preset at 66 FPS is playable but close to the edge, and the Ultra preset at 42 FPS is not recommended. The data indicates that the Medium preset at 4K provides a 93 FPS maximum and a 69 FPS minimum, which is a stable range for a horror title. The Low preset at 99 FPS is an option for those prioritizing frame rate over visuals, but the Medium preset is the best compromise between quality and performance. The 4K Ultra result of 42 FPS is a clear warning that this setting exceeds the GPU’s memory capabilities, and the data suggests avoiding it entirely.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread processor based on the Zen 4 architecture, codenamed Dragon Range. It has a base clock of 2.50 GHz and a boost clock of 5.40 GHz, with a 55 W TDP. The CPU’s cache configuration includes 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3 cache, which is substantial for gaming workloads. Its Cinebench R23 multi-core score of 42713 and single-core score of 6030 demonstrate its high multi-threaded capability, which is useful for background tasks but less critical for a game like Downfall.

The CPU’s benchmark results, such as a PassMark multi-thread score of 51405 and a PassMark single-thread score of 3907, place it in the 95th percentile of all CPUs. Its nearest rival, the Intel Core Ultra 9 285HX, is only 0.1% slower in average score, indicating that these are near-identical in CPU performance. However, the measured FPS data in Downfall shows that the CPU is not the primary bottleneck at any resolution. At 1080p Low, the combo hits 223 FPS, which suggests the CPU can feed the GPU efficiently. At 4K Ultra, the CPU is likely idle, as the GPU’s memory constraints limit the frame rate to 42 FPS.

The CPU’s memory bandwidth of 83.2 GB/s, supporting DDR5 dual-channel memory, is sufficient for the GPU’s needs. The PCIe Gen 5 interface with 28 lanes provides ample bandwidth for the RTX 5070 Mobile. The data suggests that the CPU’s role is to ensure the GPU is never starved of data, and it does this effectively at all tested settings. The 0.1% deltaPct over the Intel Core Ultra 9 285HX in average benchmark score indicates that this CPU is not a differentiator in Downfall; the GPU is the deciding factor. The high single-thread performance, evidenced by the Cinebench R15 single-core score of 607, ensures that the game’s main thread is handled well, but the 4K Ultra bottleneck is purely a GPU memory issue.

FAQ

*Q: What is the best resolution for this combo in Downfall?*

A: The data recommends 2560x1440 with High settings, which averages 107 FPS. This offers a good balance between visual quality and high frame rates.

Q: Why is 4K Ultra so much slower than 4K High?

A: The 4K Ultra average is 42 FPS, while 4K High is 66 FPS, a 57% difference. This suggests the Ultra preset exceeds the GPU’s 8 GB memory capacity, causing a severe performance drop.

Q: Can this combo run 4K at a playable frame rate?

A: Yes, but only at Medium settings, which average 81 FPS with a minimum of 69 FPS. The High setting at 66 FPS is borderline, and Ultra at 42 FPS is not recommended.

Q: How does the RTX 5070 Mobile compare to the RTX 3070 Ti?

A: The RTX 5070 Mobile has an average benchmark score of 29928, which is 0.1% lower than the RTX 3070 Ti’s score of 29945, making them statistically equivalent in performance.

Q: Is the CPU or GPU the limiting factor at 1080p?

A: At 1080p Low, the combo achieves 223 FPS, indicating that both components are working well. The high frame rates suggest the CPU is not a bottleneck at this resolution.

*Q: What is the combo’s overall rank in Downfall?*

A: The combo ranks 2058th out of 3716 tested combinations, placing it in the 55th percentile. This is a mid-pack result driven by the weak 4K Ultra performance.