Downfall

The benchmark data for Downfall on the Intel Core Ultra 7 155H and AMD Radeon RX 7800M combination reveals a system that scales predictably with resolution, but with a notable shift in performance characteristics at the highest settings. The measured frames per second (FPS) across the three primary resolutions—1920x1080, 2560x1440, and 3840x2160—show a clear progression from a CPU-bound scenario at lower resolutions to a GPU-bound one at 4K. This analysis breaks down the system's behavior, the roles of its core components, and how it stacks up against other tested configurations.

Resolution Scaling

The most revealing data point is the performance drop between 1080p and 4K. At the High preset, the system delivers 130 FPS at 1920x1080, which falls to 93 FPS at 2560x1440, and then to 58 FPS at 3840x2160. This represents a 55% reduction in average frame rate from 1080p to 4K. The scaling is not linear, however. The jump from 1080p to 1440p results in a 28% performance loss, while the jump from 1440p to 4K incurs a further 38% loss. This pattern indicates that the Radeon RX 7800M is the primary limiting factor at the higher resolutions, as the workload on the GPU increases exponentially with pixel count.

At the Low preset, the performance headroom is more evident. The system achieves 194 FPS at 1080p, 139 FPS at 1440p, and 86 FPS at 4K. The percentage drop from 1080p to 4K is identical at 55%, but the absolute frame rates are much higher. This suggests that even at 4K Low, the GPU is not being pushed to its absolute limit, and the CPU has enough headroom to feed it frames. The fact that the 4K Low result (86 FPS) is higher than the 1440p High result (93 FPS) is a strong indicator that the settings preset has a more significant impact on performance than resolution alone, at least within this range.

The Medium preset offers a middle ground, with 159 FPS at 1080p, 114 FPS at 1440p, and 71 FPS at 4K. The minimum FPS recorded at Medium settings were 135 at 1080p, 97 at 1440p, and 60 at 4K. These minimums are all above the 60 FPS threshold, indicating that the Medium preset provides a consistently smooth experience even at the highest resolution. The Ultra preset, conversely, shows the steepest scaling cliff. It delivers 81 FPS at 1080p but falls to 58 FPS at 1440p and a marginal 36 FPS at 4K. This dramatic drop, a 55% reduction from 1440p to 4K, underscores that Ultra settings are too demanding for this GPU at higher resolutions. The data clearly shows that as resolution increases, the GPU becomes the bottleneck, and the choice of settings preset becomes crucial for maintaining playable frame rates.

GPU Role

The AMD Radeon RX 7800M is a mobile GPU based on the RDNA 3.0 architecture, built on a 5 nm process by TSMC. It features 12 GB of GDDR6 memory on a 192-bit bus, providing a memory bandwidth of 432.0 GB/s. The GPU has a base clock of 1295 MHz, a game clock of 2145 MHz, and a boost clock of 2335 MHz. With 3840 shading units, 240 texture mapping units, and 96 render output units, it is a substantial piece of silicon. The GPU's transistor count is listed at 28,100 million on a 346 mm² die.

In Downfall, the GPU's role becomes increasingly dominant as resolution scales. The benchmark results show that at 1080p, the GPU is not the limiting factor, as the frame rates are high enough to suggest CPU involvement. However, at 4K, the GPU's workload becomes the clear bottleneck. The difference between the High (58 FPS) and Low (86 FPS) presets at 4K is 28 FPS, a 48% improvement from simply lowering graphical fidelity. This indicates that the GPU's compute and memory resources are being heavily taxed by the High settings' effects.

The VRAM capacity of 12 GB is a relevant factor here. While the data does not explicitly show VRAM usage, the significant performance drop at the Ultra preset (36 FPS at 4K) compared to High (58 FPS) suggests that the highest settings may be exceeding the comfortable working set of the GPU, potentially spilling into slower memory access patterns. The GPU's average benchmark score of 27883 places it in the 73rd percentile of all GPUs. Its nearest rivals, based on average score, are the AMD Radeon Pro Vega 20 (a 0.2% delta), the AMD Radeon Pro W5500X (-0.3%), the NVIDIA GeForce GTX 980 Ti (-0.5%), and the AMD FirePro S7150 (-0.8%). These are all older or workstation-class parts, indicating that the RX 7800M is positioned as a high-performance mobile solution, though its direct competition in this benchmark is not from the latest generation of gaming GPUs.

CPU Role

The Intel Core Ultra 7 155H is a mobile processor from the Core Ultra Series 1, built on the Meteor Lake architecture using a 7 nm process. It has 16 cores and 22 threads, with a base clock of 3.80 GHz and a boost clock of 4.80 GHz. The CPU's cache hierarchy includes 112 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3 cache. It supports dual-channel DDR5 memory with a bandwidth of 89.6 GB/s. The CPU's TDP is rated at 28 W, which is typical for a mobile part designed for efficiency.

In the context of Downfall, the CPU appears to be sufficient to keep the GPU fed at lower resolutions. The data shows that at 1080p Low, the system achieves 194 FPS, which is a very high frame rate that would stress many CPUs. The fact that it can maintain this level suggests that the 155H's multi-threaded performance, as evidenced by its Cinebench R23 multi-core score of 15028, is more than adequate for this game's engine. The CPU's single-core performance, with a Cinebench R23 score of 1743, is also respectable and likely handles the game's primary game thread without issue.

However, the CPU's role is not entirely passive. The gap between the 1080p High (130 FPS) and 1080p Low (194 FPS) results shows that the CPU can produce enough frames to highlight the GPU's limitations, but at 1440p and 4K, the GPU's rendering time becomes the dominant factor. The CPU's general performance is ranked in the 83rd percentile of all CPUs, with an average benchmark score of 32697. Its nearest rivals include the Intel Core i5-14600T (0% delta), AMD Ryzen AI 7 PRO 360 (0.1%), AMD Ryzen 5 7400F (-0.2%), and AMD Ryzen 7 PRO 6850H (-0.4%). These rivals are a mix of desktop and mobile parts, showing that the 155H's overall compute capability is competitive with mid-range desktop chips, which is a strong indicator that it does not bottleneck the RX 7800M in most gaming scenarios.

FAQ

*Q: What is the best resolution for playing Downfall with this hardware?*

A: Based on the measured FPS, 2560x1440 offers the best balance. At High settings, it delivers 93 FPS, while at Medium it reaches 114 FPS with a minimum of 97 FPS. This provides a high frame rate with a smooth experience, whereas 4K High drops to 58 FPS, which is less fluid.

*Q: Is the AMD Radeon RX 7800M capable of handling Downfall at 4K?*

A: Yes, but only at lower settings presets. At 4K Low, the system achieves 86 FPS, and at 4K Medium, it averages 71 FPS with a minimum of 60 FPS. However, at 4K High, the average drops to 58 FPS, and at Ultra, it falls to a marginal 36 FPS, which is not ideal for a smooth experience.

Q: How does the Intel Core Ultra 7 155H compare to its nearest rivals in terms of overall CPU performance?

A: The data shows that the 155H is essentially on par with its nearest rivals. It has a 0% delta compared to the Intel Core i5-14600T, a 0.1% delta vs. the AMD Ryzen AI 7 PRO 360, a -0.2% delta vs. the AMD Ryzen 5 7400F, and a -0.4% delta vs. the AMD Ryzen 7 PRO 6850H. This indicates that its average benchmark score is within a fraction of a percent of these alternatives.

*Q: Is the GPU or the CPU the primary bottleneck in Downfall at 1080p?*

A: The data suggests that at 1080p, the system is not strictly CPU-bound, as the frame rates are very high. The difference between Low (194 FPS) and Ultra (81 FPS) at 1080p shows a significant impact from GPU settings. However, the CPU is capable of producing high frame rates, so it is not a limiting factor. The bottleneck is more likely the GPU's ability to render the scene at higher settings.

Q: What is the performance difference between the High and Ultra presets at 1440p?

A: At 2560x1440, the High preset averages 93 FPS, while the Ultra preset averages 58 FPS. This is a 60% reduction in frame rate when moving from High to Ultra. This large drop indicates that the Ultra preset includes effects that are disproportionately demanding on the GPU.

Q: What is the combined rank of this CPU and GPU combo among all tested combos?

A: The Intel Core Ultra 7 155H paired with the AMD Radeon RX 7800M ranks 1931 out of 2928 tested combos for Downfall. This places it in the lower-middle portion of the performance distribution for this specific game.

How This Combo Ranks

The combination of the Intel Core Ultra 7 155H and AMD Radeon RX 7800M is ranked 1931 out of 2928 tested combos for Downfall. This rank places the system in the 34th percentile of all tested configurations, meaning that roughly two-thirds of the combos tested deliver higher performance in this specific game. This is a significant finding, as it suggests that despite the individual components' respectable benchmark scores, the pairing is not particularly synergistic for Downfall.

The CPU's average benchmark score ranks it in the 83rd percentile of all CPUs, and the GPU's average score places it in the 73rd percentile of all GPUs. If performance were perfectly correlated, one might expect the combo to rank higher than 1931. The discrepancy suggests that Downfall may be sensitive to specific aspects of the hardware that are not fully captured by the generic average benchmark scores. For instance, the game might favor CPUs with higher single-thread performance or GPUs with specific architectural features. The rank of 1931 out of 2928 combos indicates that while this system is capable of playing the game, there are many other configurations that achieve higher frame rates, particularly at the resolution and settings where the system is not bottlenecked by the GPU.

Settings Recommendations

The measured data provides a clear hierarchy for the best experience in Downfall with this hardware. The priority is to maintain a frame rate that is both high and stable, ideally at or above 60 FPS.

For 1920x1080, the High preset is the recommended starting point, as it delivers 130 FPS. This is a high frame rate that should be smooth on most displays. For users with high refresh rate monitors, the Low preset at 194 FPS is also viable, though the visual quality reduction may be noticeable. The Medium preset at 159 FPS is a strong middle ground, but High offers a better visual experience for a modest FPS cost.

At 2560x1440, the Medium preset is the optimal choice. It delivers an average of 114 FPS with a minimum of 97 FPS, ensuring a consistently smooth experience. The High preset at 93 FPS is also very playable, but the Medium preset offers a higher minimum frame rate, which can reduce stuttering. The Ultra preset at 58 FPS is on the borderline of playability and is not recommended for a consistently smooth experience.

At 3840x2160, the Medium preset is the only viable option for a smooth experience. It averages 71 FPS with a minimum of 60 FPS, which is just above the 60 FPS target. The Low preset at 86 FPS is also an option for users who prioritize frame rate over visual fidelity. The High preset at 58 FPS will be playable for some, but the lower minimum frame rate could lead to noticeable dips. The Ultra preset at 36 FPS is not recommended, as it falls well below the threshold for a smooth experience.

In summary, the data suggests that the "Medium" settings preset offers the best combination of visual quality and performance across all three resolutions. It is the only preset that maintains a minimum frame rate of 60 FPS or higher at 4K, and it provides a high average frame rate at 1440p (114 FPS) and 1080p (159 FPS). For users who prioritize maximum visual quality, the High preset is acceptable at 1080p and 1440p, but it is not recommended for 4K.