Roblox

Roblox with the Intel Core Ultra 5 135H and NVIDIA GeForce RTX 4090 produces a dataset that is almost entirely GPU-limited at every resolution and settings level tested. The measured frames per second (FPS) range from a low of 124 at 4K Ultra to a high of 505 at 1080p Low, indicating that the RTX 4090 is the dominant component in this pairing. The data shows a clear pattern: as resolution increases, the performance gap between settings presets narrows, and the frame rates scale in a way that suggests the CPU is never the primary bottleneck, even at 1080p where the load on the processor is typically highest.

Resolution Scaling

The FPS drop from 1080p to 4K is substantial, but the rate of decline varies significantly depending on the graphics preset. At Low settings, the average FPS falls from 505 at 1920x1080 to 337 at 2560x1440, a reduction of 168 FPS, and then down to 191 at 3840x2160, another drop of 146 FPS. This represents a 62% decrease from 1080p to 4K. In contrast, at Ultra settings, the average FPS falls from 330 at 1080p to 220 at 1440p (a 110 FPS drop) and then to 124 at 4K (a 96 FPS drop), which is a 62% decrease as well. The consistency of this percentage drop across presets suggests that the scaling is primarily driven by pixel count rather than the complexity of the scene.

The Medium settings data provides the only complete min/max range across all resolutions. At 1920x1080, the average is 460 with a minimum of 391 and a maximum of 529. Moving to 2560x1440, the average drops to 307, with a minimum of 261 and a maximum of 353. At 3840x2160, the average is 174, with a minimum of 148 and a maximum of 200. The spread between minimum and maximum FPS narrows as resolution increases; at 1080p the spread is 138 FPS, while at 4K it is 52 FPS. This narrowing indicates that at higher resolutions, the GPU is working closer to its saturation point, reducing the variance caused by scene complexity.

The data indicates that the RTX 4090 is the limiting component across the board. If the CPU were the bottleneck, we would expect to see a significant flattening of FPS at lower resolutions, where the GPU has less work to do per frame. Instead, the FPS continues to scale dramatically with resolution, rising from 124 at 4K Ultra to 330 at 1080p Ultra. This behavior is consistent with a GPU that is fully utilized, and the 14-core, 18-thread Intel Core Ultra 5 135H is providing enough headroom to feed the GPU at all settings. The frame rates at 1080p, exceeding 500 FPS on Low, are a clear indicator that the CPU is not the constraint, as such numbers would typically be impossible if the processor were struggling to keep up.

GPU Role

The NVIDIA GeForce RTX 4090 is the clear performance driver in this configuration. The GPU's benchmark results place it in the 88th percentile of all GPUs, with an average benchmark score of 60347. Its nearest rivals in the data include the Intel Arc Pro A60 with a delta of 0%, the AMD Radeon Pro Vega 48 with a delta of 0.3%, and the AMD Radeon PRO V710 with a delta of 2.9%. This places the RTX 4090 in a very high performance tier, and the measured FPS in Roblox reflects that positioning.

The GPU features 24 GB of GDDR6X memory on a 384-bit bus, providing a memory bandwidth of 1.01 TB/s. The base clock is 2235 MHz with a boost clock of 2520 MHz. These specifications are ample for Roblox, which is not a demanding title in terms of VRAM capacity. The data shows that even at 4K Ultra, the average FPS is 124, which is well above the threshold for smooth gameplay. The high memory bandwidth is likely a contributing factor to the consistent performance at higher resolutions, as it allows the GPU to quickly access textures and geometry data.

The GPU's clock speeds are high, but the data suggests that the performance scaling is more closely tied to the resolution and settings than to the raw clock speed. The difference between Low and Ultra at 4K is 67 FPS (191 to 124), while at 1080p the difference is 175 FPS (505 to 330). This indicates that the GPU's compute units are the primary factor, with clock speed playing a supporting role. The RTX 4090's architecture, Ada Lovelace, is built on a 5 nm process from TSMC, which contributes to its efficiency and high absolute performance. The measured results show that this GPU is not being stressed by Roblox, as the frame rates are consistently high even at the most demanding settings.

Settings Recommendations

The measured FPS data suggests that the Ultra preset is the best choice for users prioritizing visual quality, as it still delivers an average of 124 FPS at 4K, which is comfortably above the standard 60 FPS target. At 1440p, Ultra averages 220 FPS, and at 1080p it reaches 330 FPS. The jump from High to Ultra at 4K is a drop of 29 FPS (153 to 124), which is a 19% reduction for the highest quality settings. This trade-off is acceptable for most users, as the visual improvements in Roblox are often subtle.

For users who want maximum frame rates, the Low preset provides the highest FPS at every resolution. The data shows 505 FPS at 1080p, 337 FPS at 1440p, and 191 FPS at 4K. The difference between Low and Medium at 1080p is 45 FPS (505 to 460), which is relatively small, suggesting that Medium is a good middle ground for users with high refresh rate monitors. At 1440p, the difference between Low and Medium is 30 FPS (337 to 307), and at 4K it is 17 FPS (191 to 174).

The Medium preset offers the most balanced experience when considering the min and max FPS data. At 1080p, the minimum is 391 FPS, which is still extremely high, and the maximum is 529 FPS. At 1440p, the minimum is 261 FPS, and at 4K it is 148 FPS. This preset provides a substantial boost over Low settings in visual fidelity while maintaining a high minimum frame rate. The data indicates that High settings are a viable alternative, but the lower minimum FPS values (which are not recorded for High) could lead to occasional stutter in demanding scenes. The Ultra preset is recommended for those who prioritize visual quality, as it maintains a playable frame rate at all resolutions, while Medium is the optimal choice for high refresh rate gaming.

FAQ

Q: What is the average FPS at 1080p with Ultra settings?

A: The average FPS at 1920x1080 with Ultra settings is 330. This is the highest resolution and settings combination where the average FPS exceeds 300, indicating that the RTX 4090 is still performing well above typical display refresh rates.

Q: How does the FPS drop from 1440p to 4K at Medium settings?

A: At 2560x1440, the average FPS is 307, while at 3840x2160 it is 174. This represents a drop of 133 FPS, or approximately 43%, when moving to the higher resolution.

Q: What is the minimum FPS recorded at 4K with Medium settings?

A: The minimum FPS recorded at 3840x2160 with Medium settings is 148. The maximum in the same configuration is 200, giving an average of 174 FPS.

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

A: The data indicates the GPU is the limiting component. The FPS scales significantly with resolution (from 505 at 1080p Low to 191 at 4K Low), which is a characteristic of a GPU-bound scenario. If the CPU were the bottleneck, the frame rates would be more consistent across resolutions.

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

A: At 2560x1440, the Low preset averages 337 FPS, while the Ultra preset averages 220 FPS. This is a difference of 117 FPS, showing the impact of the graphics settings on performance.

Q: How does this combo rank among all tested combinations?

A: The Intel Core Ultra 5 135H and NVIDIA GeForce RTX 4090 combo ranks 828th out of 3711 tested combinations for Roblox. This places it in the top quarter of all tested systems.

How This Combo Ranks

The combination of the Intel Core Ultra 5 135H and the NVIDIA GeForce RTX 4090 achieves a rank of 828 out of 3711 tested combos in Roblox. This places the system in the 78th percentile of all tested configurations. The rank is a reflection of the absolute performance of the GPU and CPU pairing, but the data suggests that the CPU is not contributing significantly to the overall score, given the GPU-bound nature of the workload.

The CPU itself ranks in the 81st percentile of all CPUs, with an average benchmark score of 29093. Its nearest rivals include the AMD Ryzen 7 5800X with a delta of -0.1%, the Intel Xeon Phi 7210 with a delta of -0.5%, and the AMD Ryzen 5 5600XT with a delta of 0.5%. These rivals have nearly identical average scores, indicating that the Core Ultra 5 135H is performing at a level comparable to these desktop processors. In the context of Roblox, the CPU's performance is more than sufficient, as the game is not known for heavy multi-threaded workloads.

The GPU, on the other hand, ranks in the 88th percentile of all GPUs, with an average benchmark score of 60347. The combo's rank of 828 is likely driven by the GPU's high absolute performance, but the overall ranking is tempered by the fact that the CPU is a mobile part with lower clock speeds than a desktop equivalent. The data shows that the RTX 4090 is capable of producing extremely high frame rates in Roblox, but the CPU may be limiting the maximum FPS in certain low-resolution, low-settings scenarios, even though the scaling data suggests otherwise. The rank of 828 is still very strong, indicating that this combo is among the top performers for this game.

CPU Role

The Intel Core Ultra 5 135H is a 14-core, 18-thread processor based on the Meteor Lake architecture. Its base clock is 3.60 GHz with a boost clock of 4.60 GHz. The CPU has a total of 18 MB of shared L3 cache, with 2 MB of L2 cache per core and 112 KB of L1 cache per core. It supports dual-channel DDR5 memory with a bandwidth of 89.6 GB/s. The processor is built on a 7 nm process at Intel and has a TDP of 28 W, which is typical for a mobile part.

In the context of Roblox, the CPU's role is to feed the GPU with draw calls and game logic. The data shows that the CPU is not a bottleneck, as the FPS scales consistently with resolution. The CPU's single-thread performance, as measured by Cinebench R23, is 1700, and its multi-core score is 11875.5. These scores are respectable for a mobile processor, and they provide enough headroom for the RTX 4090 to operate at full capacity. The CPU's PassMark single-thread score is 3521, which is in line with its rivals.

The CPU's integrated graphics, Arc Xe-LPG 96EU, are not used in this configuration since a discrete GPU is present. The processor's memory bandwidth of 89.6 GB/s is sufficient for the game, as Roblox does not require high memory throughput. The CPU's performance in the data is consistent with its benchmark scores, and the measured FPS in Roblox indicates that the Core Ultra 5 135H is a capable partner for the RTX 4090. The lack of any FPS drop that could be attributed to CPU limitations, even at 1080p Low where the frame rate exceeds 500, confirms that the processor is performing its role effectively.

Measured FPS Breakdown

At 1920x1080, the data shows a clear progression of performance based on settings. The Low preset achieves an average of 505 FPS. Moving to Medium, the average drops to 460 FPS, with a minimum of 391 and a maximum of 529. The High preset averages 407 FPS, and the Ultra preset averages 330 FPS. This represents a 175 FPS difference between the lowest and highest settings, which is a 35% reduction in frame rate at Ultra compared to Low.

At 2560x1440, the performance scaling continues. The Low preset averages 337 FPS. The Medium preset averages 307 FPS, with a minimum of 261 and a maximum of 353. The High preset averages 271 FPS, and the Ultra preset averages 220 FPS. The difference between Low and Ultra at this resolution is 117 FPS, or a 35% reduction, which is consistent with the 1080p scaling.

At 3840x2160, the frame rates are lower but still high. The Low preset averages 191 FPS. The Medium preset averages 174 FPS, with a minimum of 148 and a maximum of 200. The High preset averages 153 FPS, and the Ultra preset averages 124 FPS. The difference between Low and Ultra is 67 FPS, a 35% reduction, which matches the scaling seen at lower resolutions. The consistency of this percentage drop across all resolutions confirms that the GPU is the sole performance limiter, and the settings presets have a uniform impact on the rendering load.