Roblox

Roblox, a sandbox title from 2006, presents an interesting case study in hardware scaling due to its lightweight engine and broad performance ceiling. The measured FPS data for the AMD Ryzen AI Max+ 395 paired with the NVIDIA GeForce RTX 4080 Mobile reveals a system that is profoundly overqualified for the task, with performance deltas between settings and resolutions that point to a complex interplay of CPU and GPU limits rather than a single bottleneck.

Resolution Scaling

The frame rate drop from 1080p to 4K is substantial but not linear, revealing how the load shifts between components. At 1080p with Ultra settings, the combo produces 301 FPS. Moving to 1440p, that number falls to 201 FPS, a drop of exactly 100 FPS or about 33%. The transition to 4K is less severe in absolute terms, with the Ultra preset yielding 114 FPS, a further decrease of 87 FPS from the 1440p result. This pattern of diminishing absolute drops as resolution increases suggests that at lower resolutions, the system is heavily limited by the CPU's ability to feed the GPU frames, while at 4K, the GPU begins to take on a more significant role.

This scaling behavior is more visible when examining the lower settings. The Low preset at 1080p hits 461 FPS, but this drops to 308 FPS at 1440p, a 153 FPS reduction. At 4K, the Low preset outputs 174 FPS. The magnitude of these absolute drops indicates that the game is not saturating the GPU even at 4K, as the frame rates remain exceptionally high. The data suggests that the RTX 4080 Mobile, with its 12 GB of GDDR6 memory and 432.0 GB/s bandwidth, is rarely the limiting factor. Instead, the Ryzen AI Max+ 395's single-thread performance, as indicated by its Geekbench single-core score of 2464, is likely the primary constraint on achieving even higher frame rates at 1080p.

The 4K data points further illuminate the scaling. The jump from Low (174 FPS) to Medium (158 FPS) costs 16 FPS, while the jump from Medium to High (140 FPS) costs 18 FPS. The final leap to Ultra (114 FPS) is the most expensive, costing 26 FPS. This progressive increase in the performance penalty for each settings tier at 4K suggests that as visual complexity increases, the GPU's shading units and texture units begin to work harder, but the game's engine still does not present a significant enough load to fully utilize the 7424 shading units available. The result is a system that is always delivering playable, and in most cases, exceptionally high frame rates, but the data implies that the performance headroom is vast.

GPU Role

The NVIDIA GeForce RTX 4080 Mobile is a high-end mobile part with specifications that are far beyond what Roblox typically requires. Its 12 GB of VRAM is unlikely to be a limiting factor in this title, as the game's relatively simple geometry and textures are not known for high memory consumption. The GPU's boost clock of 1665 MHz and its 80 ROPs contribute to a pixel rate of 133.2 GPixel/s, which helps explain why even at 4K Ultra, the system maintains an average of 114 FPS. The memory clock of 2250 MHz (18 Gbps effective) provides a bandwidth of 432.0 GB/s, ensuring that texture data can be fed to the processing units without becoming a bottleneck.

The GPU's benchmark performance places it in the 81st percentile of all GPUs, with an average benchmark score of 38135. Interestingly, its nearest rivals in the database include the NVIDIA GeForce RTX 5080 Mobile, which has an average score of 38349 and a deltaPct of -0.6, and the NVIDIA GeForce RTX 4070, with a score of 37648 and a deltaPct of 1.3. This indicates that while the RTX 4080 Mobile is a powerful part, its performance is very closely matched with other GPUs in synthetic benchmarks, yet in Roblox, the measured FPS shows it is more than sufficient. The data suggests that the GPU's role in this game is to provide a guaranteed high frame rate floor, but its headroom is never truly tested. Even at the most demanding settings, the game does not push the GPU to its limits, as evidenced by the high average frame rates across all resolutions.

The GPU's TDP of 110 W is a detail that helps contextualize its performance envelope, but in this game, the power draw is likely not a constraint. The fact that the RTX 4080 Mobile is an IGP (Integrated Graphics Processor) in terms of slot width, despite being a discrete-class chip, suggests a compact design that trades some performance for portability. However, the benchmark results show no sign of thermal or power throttling, as the frame rates are consistently high. The data indicates that the GPU is a silent partner in this configuration, providing ample performance headroom that is rarely accessed by the game's engine.

CPU Role

The AMD Ryzen AI Max+ 395 is a 16-core, 32-thread processor based on the Zen 5 architecture, and its role in Roblox is far more complex than that of the GPU. While the game is often considered lightly threaded, the data suggests that the CPU's single-core performance is the key to pushing frame rates to their absolute maximum. The processor has a base clock of 3.00 GHz and a boost clock of 5.10 GHz, and its Geekbench single-core score of 2464 is a strong indicator of its capability in this regard. In contrast, its multi-core score of 20992 is impressive, but Roblox is unlikely to leverage all 16 cores effectively.

The CPU's nearest rivals in the database, based on average benchmark score, include the Intel Core i9-14900K with a score of 79097 and a deltaPct of -1.7, and the AMD Ryzen 9 8945HX with a score of 76212 and a deltaPct of 2. This places the Ryzen AI Max+ 395 in the 95th percentile of all CPUs, with an average benchmark score of 77740. This high percentile confirms its position as a top-tier mobile processor, but its performance in Roblox is more nuanced. At 1080p with Low settings, the system achieves 461 FPS, a number that is likely limited by the game's engine logic and draw call submission, which is a CPU-bound task. The fact that the frame rate does not scale perfectly with the GPU's capabilities at this resolution confirms that the CPU is the primary driver of performance.

The L3 cache of 64 MB (shared) is another factor that could influence performance in a game like Roblox, which may have many small assets that need to be accessed quickly. The CPU's memory bandwidth of 256.0 GB/s, provided by quad-channel LPDDR5X, also ensures that data can be transferred to the GPU and other components quickly. However, the data shows that the CPU's single-threaded strength, rather than its multi-threading capability, is what matters most. The benchmark results imply that if the game were more optimized for multi-threading, the 32 threads could potentially yield even higher frame rates, but as it stands, the CPU's speed on a per-core basis is the defining characteristic.

Measured FPS Breakdown

The measured FPS data provides a clear picture of how the system performs across different settings and resolutions. At 1920x1080, the lowest resolution tested, the system delivers exceptional performance. The Low preset averages 461 FPS, which is the highest recorded score. The Medium preset drops to 420 FPS, with a minimum of 357 FPS and a maximum of 483 FPS. High settings yield 371 FPS, and Ultra drops to 301 FPS. This shows a consistent decline as settings increase, with a total drop of 160 FPS from Low to Ultra at 1080p.

At 2560x1440, the frame rates remain extremely high but begin to show more sensitivity to settings. The Low preset averages 308 FPS, which is a significant drop from the 1080p Low result. Medium settings average 280 FPS, with a minimum of 238 FPS and a maximum of 322 FPS. High settings produce 248 FPS, and Ultra settings yield 201 FPS. The relative drop from Low to Ultra at this resolution is 107 FPS, which is a smaller absolute difference than at 1080p, but the percentage difference is similar.

At 3840x2160, the system still delivers remarkably high frame rates, though the gap between settings becomes more pronounced. The Low preset averages 174 FPS, and Medium averages 158 FPS, with a minimum of 135 FPS and a maximum of 182 FPS. High settings produce 140 FPS, and Ultra settings drop to 114 FPS. The data shows that even at the most demanding resolution and settings combination, the system maintains an average frame rate above 100 FPS, which is far beyond the typical 60 FPS target for most games. The Medium preset at 4K, with a minimum FPS of 135, is particularly notable for its consistency, suggesting that it might be a sweet spot for a smooth experience.

How This Combo Ranks

The combination of the AMD Ryzen AI Max+ 395 and the NVIDIA GeForce RTX 4080 Mobile is ranked 1223 out of 3711 tested combos for this game. This places it in the top third of all configurations, which is a solid result. However, given the high-end nature of both components, one might expect a higher rank. This suggests that other combinations of components, perhaps with even faster single-core CPUs or more specialized gaming GPUs, can achieve higher frame rates in Roblox. The combo's rank is likely pulled down by the CPU's multi-threaded design, which is not fully utilized by the game, and the fact that the GPU's massive power is not fully harnessed at lower resolutions.

The percentile rankings for the individual components are high, with the CPU in the 95th percentile and the GPU in the 81st percentile. Yet, the combo's rank in this specific game does not reflect the same percentile. This discrepancy is a clear indication that Roblox's performance is not directly correlated with raw hardware power. The data implies that a system with a slightly slower but higher-clocked CPU might rank higher, as the game is likely bottlenecked by single-threaded performance. The rank of 1223 out of 3711 is not a failure, but it is a data point that suggests the hardware is not being used to its full potential in this title.

The nearest rivals for the GPU, such as the RTX 5080 Mobile with a deltaPct of -0.6, would likely perform similarly in this game, as the GPU is not the bottleneck. Conversely, the CPU's rivals, such as the Intel Core i9-14900K with a deltaPct of -1.7, might perform slightly better in Roblox due to their potentially higher single-core clock speeds. The data indicates that the combo's rank is a function of the CPU's strong but not absolute single-core performance, and the GPU's over-provisioned capabilities.

Settings Recommendations

Based on the measured data, the most balanced experience for this hardware is the Medium preset at 2560x1440. This settings and resolution combination yields an average FPS of 280, with a minimum of 238 FPS and a maximum of 322 FPS. The minimum FPS is well above the refresh rate of most high-end monitors, ensuring a smooth and consistent experience without any noticeable stutters. The jump from Medium to High at this resolution costs 32 FPS, which is a noticeable drop, while the visual improvement may not be worth it, given that the game's art style is not highly realistic.

For users with a 4K display, the Medium preset is also a strong recommendation. The average FPS of 158, with a minimum of 135 FPS, is a solid result for 4K gaming. The High preset at 4K drops to 140 FPS, and the Ultra preset drops to 114 FPS, which is still playable but begins to approach the threshold where frame pacing might become an issue for some users. The Low preset at 4K offers the highest frame rate at 174 FPS, but it is likely to reduce the visual quality to a point where the game looks dated.

At 1080p, the Ultra preset is a viable option, as it still produces an average of 301 FPS. However, given the high frame rates across all settings, the choice comes down to visual preference. The data suggests that the Medium preset is the most efficient use of the hardware, as it provides a high frame rate with a good minimum FPS at all resolutions, indicating a stable performance profile. The Ultra preset, while visually superior, introduces a larger performance penalty that is not necessary for a game like Roblox. The Low preset is not recommended for this hardware, as it does not provide a significant enough performance benefit to justify the loss in visual fidelity.

FAQ

Q: What is the highest average FPS recorded for this hardware combo?

A: The highest average FPS recorded is 461 FPS, achieved at 1920x1080 resolution with the Low settings preset.

Q: Does the system maintain a 60 FPS minimum at 4K Ultra settings?

A: The data shows that at 3840x2160 with Ultra settings, the average FPS is 114, but the minimum FPS is not listed. For the Medium preset at 4K, the minimum FPS is 135, which is well above 60 FPS.

Q: How does the CPU's single-core performance impact the results?

A: The CPU has a Geekbench single-core score of 2464, and the data suggests that this score is a primary factor in achieving high frame rates at lower resolutions. At 1080p, the frame rates are extremely high, indicating a CPU-bound scenario.

Q: What is the average benchmark score for the GPU, and how does it compare to its rivals?

A: The GPU has an average benchmark score of 38135. Its nearest rival, the NVIDIA GeForce RTX 5080 Mobile, has an average score of 38349, a deltaPct of -0.6, meaning the RTX 4080 Mobile is slightly slower in synthetic benchmarks.

Q: Is the GPU or CPU the limiting factor in this game?

A: The data indicates that the CPU is the primary limiting factor. The GPU has a high enough performance ceiling that it is rarely stressed, as evidenced by the high frame rates even at 4K Ultra. The CPU's single-core speed determines the maximum frame rate ceiling.

Q: What is the combo's rank among all tested configurations?

A: The combo is ranked 1223 out of 3711 tested combos for Roblox. This places it in the top third of all configurations, but not at the very top, due to the game's reliance on single-threaded CPU performance.