Downfall

The AMD Ryzen 9 8945HX paired with the AMD Radeon 890M produces a narrow performance envelope in Downfall, a 2016 horror title that stresses the integrated GPU far more than the 16-core processor. Across the measured spectrum, from 1080p Low to 4K Ultra, the average frame rate spans from 94 FPS down to 18 FPS, revealing a system where the iGPU is the definitive bottleneck. The combination ranks 2746th out of 2928 tested combos, placing it in the bottom 6% of all configurations, a position driven almost entirely by the graphics solution rather than the CPU.

Resolution Scaling

The frame rate scaling from 1080p to 4K in Downfall shows a classic GPU-limited curve, with the Radeon 890M losing ground steadily as pixel count rises. At Low settings, the average FPS drops from 94 at 1920x1080 to 67 at 2560x1440, a 29% reduction, and then further to 42 at 3840x2160, representing a 55% loss from the 1080p baseline. This steep decline indicates that the integrated GPU's shading units and texture units are saturated early, with the 1024 shading units and 64 TMUs unable to maintain throughput as resolution increases.

The Medium settings data tells a similar story with slightly lower absolute numbers. The average FPS at 1080p Medium is 77, falling to 55 at 1440p and 34 at 4K. The percentage drops are consistent: 29% from 1080p to 1440p, and 56% from 1080p to 4K, nearly identical to the Low settings pattern. This consistency across settings suggests that resolution scaling in Downfall is purely a fill-rate and pixel-processing exercise, with the 32 ROPs and 92.80 GPixel/s pixel rate becoming the limiting factor at higher resolutions.

At High settings, the scaling becomes more punishing. The 1080p average of 63 FPS drops to 45 at 1440p (a 29% decrease) and then to 28 at 4K (a 56% decrease from 1080p). The pattern holds, but the absolute numbers are lower because the increased shading complexity at High settings adds more work per pixel. Ultra settings show the most dramatic collapse: 39 FPS at 1080p, 28 at 1440p, and just 18 at 4K. The 4K Ultra result is only 46% of the 1080p Ultra score, confirming that the 890M is completely overwhelmed by the combination of high resolution and maximum visual fidelity.

The data indicates that the CPU is never the limiting factor in this scaling analysis. The Ryzen 9 8945HX, with its 16 cores and 32 threads boosting to 5.40 GHz, can easily feed the GPU at all resolutions. The consistent percentage-based scaling across settings, regardless of whether the game runs at 94 FPS or 18 FPS, points to a pure GPU bottleneck. If the CPU were limiting, the scaling would flatten out at lower resolutions where the GPU has less work, but instead the FPS continues to climb linearly from 4K to 1080p, reinforcing that the Radeon 890M's architecture is the sole constraint.

FAQ

*Q: What is the best performance this combo achieves in Downfall?*

A: The highest average frame rate recorded is 94 FPS at 1920x1080 with Low settings. This is the only configuration in the measured data that approaches high-refresh-rate territory, though it requires sacrificing most visual fidelity.

*Q: Is this system capable of 4K gaming in Downfall?*

A: Yes, but only at Low settings, where it averages 42 FPS. Medium settings at 4K drop to 34 FPS, High settings fall to 28 FPS, and Ultra settings produce just 18 FPS, which is below playable thresholds for most users.

Q: How does the Radeon 890M compare to its nearest rivals in synthetic benchmarks?

A: The GPU's average benchmark score of 9210 places it just below the AMD Radeon Vega 8, which scores 9221 (a delta of -0.1%). It also trails the NVIDIA GeForce GTX 960 (9273, -0.7%) and the NVIDIA GeForce GTX 465 (9294, -0.9%). The 890M sits at the 45th percentile of all GPUs, indicating it is a mid-to-low tier part.

Q: What is the CPU's performance percentile, and what does it mean for gaming?

A: The Ryzen 9 8945HX sits at the 95th percentile of all CPUs, a very high ranking. Its Cinebench R23 multi-core score of 42713 and single-core score of 6030 demonstrate that it is far more capable than the GPU requires for Downfall, meaning CPU headroom is never exhausted.

*Q: Does the 890M's 4 nm process node help with sustained performance in Downfall?*

A: The 4 nm process node, manufactured by TSMC, allows the GPU to boost to 2900 MHz while maintaining a 15 W TDP. This high boost clock helps the 890M reach its measured FPS figures, but the low TDP limits power delivery, preventing it from competing with discrete GPUs in demanding scenes.

*Q: How does the combo's rank in Downfall compare to its component-level ranks?*

A: The CPU ranks at the 95th percentile, and the GPU ranks at the 45th percentile, but the combined system ranks 2746th out of 2928 combos, putting it in the bottom 6%. This discrepancy highlights that the GPU's modest performance drags the entire system down in this specific title.

GPU Role

The AMD Radeon 890M is the primary determinant of Downfall's performance, and its specifications reveal why. The GPU features 1024 shading units, 64 texture mapping units, and 32 raster operation pipelines, all built on the RDNA 3.5 architecture. Its boost clock reaches 2900 MHz, which is exceptionally high for an integrated part, but the base clock of 400 MHz shows how aggressively the GPU must downclock under thermal or power constraints. The 15 W TDP is the critical limitation, as it caps the sustained power delivery and prevents the GPU from maintaining peak clocks during extended gaming sessions.

Memory bandwidth is another major constraint. The 890M uses System Shared memory, meaning it relies on the CPU's DDR5 memory through a dual-channel interface. The CPU's memory bandwidth is 83.2 GB/s, but this is shared between the CPU and GPU workloads. In Downfall, where texture streaming and frame buffer access are intensive, this shared bandwidth becomes a bottleneck, particularly at higher resolutions where the frame buffer demands more data.

The GPU's synthetic benchmark scores align with its in-game performance. The 3DMark Steel Nomad DX12 score of 590 is modest, and the PassMark G3D score of 8076 places it at the 45th percentile. The Geekbench OpenCL score of 37254 and Vulkan score of 40808 are similarly mid-range. These numbers confirm that the 890M performs roughly on par with the NVIDIA GeForce GTX 960 in average benchmark terms, though the delta of -0.7% shows it trails slightly. The GTX 960 comparison is apt, as both are entry-level parts that struggle with modern titles at high resolutions.

The GPU's 16 ray tracing cores are present but largely irrelevant for Downfall, a 2016 title that predates widespread RT implementation. The DirectX 12 Ultimate support is also forward-looking, but the game's actual rendering workload is rasterization-based. This means the 890M's strengths in newer API features do not translate to better FPS in this older title, where raw pixel throughput and memory bandwidth are what matter. The measured FPS data shows that the GPU's 5.939 TFLOPS of FP32 performance is sufficient for 1080p Low (94 FPS) but inadequate for 4K Ultra (18 FPS), illustrating the steep performance cliff that comes from hitting the memory and ROP limits.

Measured FPS Breakdown

At 1920x1080, the Radeon 890M delivers its most playable results. Low settings produce an average of 94 FPS, which is smooth and responsive. Medium settings drop to 77 FPS, with a minimum of 66 and maximum of 89, showing some frame pacing variance but remaining playable. High settings average 63 FPS, which is still acceptable for a horror title where atmosphere matters more than twitch reflexes. Ultra settings, however, collapse to 39 FPS, marking the first major step down. This 55 FPS difference between Low and Ultra at 1080p shows the GPU's sensitivity to shader complexity.

At 2560x1440, the performance takes a noticeable hit across all settings. Low averages 67 FPS, which is a 29% drop from 1080p Low. Medium averages 55 FPS, with a minimum of 47 and maximum of 63, indicating that even the minimum frame rate stays above 45 FPS. High settings average 45 FPS, which is acceptable but borderline for a game with sudden horror moments that require quick camera movements. Ultra settings fall to 28 FPS, which is below the 30 FPS threshold considered the minimum for playable framerates. The 39 FPS gap between Low and Ultra at 1440p mirrors the 1080p pattern, confirming that settings scaling is consistent regardless of resolution.

At 3840x2160, the GPU struggles to maintain playable frame rates. Low settings average 42 FPS, which is the only 4K configuration that exceeds 30 FPS. Medium settings average 34 FPS, with a minimum of 29 and maximum of 39, showing that the GPU is hitting its memory bandwidth limits. High settings average 28 FPS, and Ultra settings average just 18 FPS. The difference between Low and Ultra at 4K is 24 FPS, smaller in absolute terms than at lower resolutions, but the percentage drop is similar (57%). This confirms that the 890M is uniformly constrained by its 32 ROPs at 4K, regardless of the settings level.

The minimum and maximum FPS data is only available for Medium settings. At 1080p Medium, the range is 66 to 89 FPS, a 23 FPS spread. At 1440p Medium, the range is 47 to 63 FPS, a 16 FPS spread. At 4K Medium, the range is 29 to 39 FPS, a 10 FPS spread. This tightening of the frame time distribution at higher resolutions suggests that the GPU becomes more consistently bottlenecked, with less variance as it operates at full capacity. The absence of min/max data for other settings limits analysis, but the Medium data provides a clear picture of how the GPU's performance scales with resolution.

How This Combo Ranks

The AMD Ryzen 9 8945HX + AMD Radeon 890M combination ranks 2746th out of 2928 tested combos in Downfall, placing it in the bottom 6.2% of all systems. This is a surprisingly low rank given the CPU's strength. The Ryzen 9 8945HX sits at the 95th percentile of all CPUs, but the Radeon 890M sits at only the 45th percentile of all GPUs. The combo rank reflects the GPU's limitations, as Downfall is a graphics-bound title that does not benefit from the CPU's 16 cores and 32 threads.

The GPU's nearest rivals in average benchmark score provide context for the combo's position. The Radeon 890M scores an average of 9210, which is nearly identical to the AMD Radeon Vega 8 at 9221 (a 0.1% deficit). It also trails the NVIDIA GeForce GTX 960 (9273, -0.7%) and the GTX 465 (9294, -0.9%). These rival GPUs are all older or lower-tier parts, and their similar scores indicate that the 890M is not a meaningful step above integrated graphics from previous generations. In Downfall, this translates to frame rates that are competitive with systems using those older GPUs, but far below systems with mid-range or high-end discrete graphics.

The CPU's nearest rivals show a different story. The Ryzen 9 8945HX scores an average of 76212, placing it just above the Intel Core Ultra 9 285HX at 76155 (a 0.1% advantage). It trails the AMD EPYC Embedded 8224P at 76492 (-0.4%) and the AMD Ryzen Threadripper PRO 9945WX at 76513 (-0.4%), but leads the AMD Ryzen 9 9950X3D at 75779 (0.6%). These deltas are within 1%, meaning the CPU is essentially performance-equivalent to its closest competitors. However, none of these rival CPUs are paired with integrated graphics in the same way, so the comparison is purely academic for Downfall performance.

The 2746th rank out of 2928 combos means that only 182 tested configurations perform worse. This places the combo in the bottom tier, comparable to systems with entry-level discrete GPUs from several generations ago. The data suggests that for Downfall, the combo is only suitable for 1080p gaming at Low to Medium settings, with 1440p being marginal and 4K being mostly unplayable except at Low settings. The rank is a direct consequence of the GPU's 45th percentile standing, which drags the entire system down despite the CPU's top-5% performance.

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, which is exceptionally high for a mobile processor. The CPU is built on TSMC's 5 nm process node and contains 13,140 million transistors across a dual-die design totaling 142 mm². In Downfall, this processing power is largely irrelevant, as the game's engine does not scale well beyond a few threads, and the GPU is the bottleneck at all tested settings.

The CPU's cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3 cache. This large L3 cache helps with data-intensive workloads, but Downfall does not appear to be cache-sensitive based on the FPS data. The CPU's memory support for DDR5 at dual-channel speeds provides 83.2 GB/s of bandwidth, which is shared with the integrated Radeon 890M. This shared memory architecture means that the CPU and GPU compete for the same bandwidth, potentially limiting both in memory-intensive scenes.

Synthetic benchmarks show the CPU's raw capability. The Cinebench R23 multi-core score of 42713 and single-core score of 6030 place it in the top tier of mobile processors. The PassMark multi-thread score of 51405 and single-thread score of 3907 further confirm its strength. The CPU's 95th percentile ranking means it outperforms 95% of all CPUs, making it one of the fastest mobile processors available. However, this power does not translate to Downfall performance, as the game's frame rates are consistently GPU-limited.

The CPU's nearest rivals in benchmark scores are all within 1% of its average score of 76212. The Intel Core Ultra 9 285HX is 0.1% faster, while the AMD EPYC Embedded 8224P and Ryzen Threadripper PRO 9945WX are 0.4% slower, and the Ryzen 9 9950X3D is 0.6% faster. These differences are negligible for gaming, and in Downfall, any of these CPUs would produce identical frame rates when paired with the same Radeon 890M. The CPU's role is to feed the GPU with draw calls and game logic, and at 1080p Low with 94 FPS, the CPU is nowhere near its limits.

The TDP of 55 W is notable for a mobile processor, as it allows the CPU to maintain high boost clocks under sustained load. However, in Downfall, the CPU is unlikely to draw full power, as the GPU's bottleneck means the CPU is often idle waiting for graphics work. The CPU's 5.40 GHz boost clock is more than sufficient to handle the game's single-threaded logic, and the 32 threads are unused overhead for a title that likely only utilizes a few cores. The data indicates that the CPU's performance headroom is vast, and any frame rate limitation in Downfall is entirely attributable to the Radeon 890M's graphics processing capabilities.