Roblox

The AMD Ryzen 7 5700 and Intel Arc B390 combination delivers a playable Roblox experience at all three tested resolutions, but the margin of comfort narrows significantly at 4K. At 1920x1080, the system is overwhelmingly powerful, averaging 171 FPS on Low settings and still maintaining 111 FPS on Ultra. At 2560x1440, all four presets clear the 60 FPS threshold, with Ultra averaging 74 FPS. The challenge appears at 3840x2160, where only the Low preset (64 FPS) remains above the playable line, and Ultra drops to 42 FPS. The data indicates a system that is excellent for high-refresh 1080p play, very capable at 1440p, but limited by the GPU at 4K when visual demands increase.

Measured FPS Breakdown

The recorded measurements show a clear progression of performance as resolution and settings scale. At 1920x1080, the combination produces high frame rates across all four presets. The Low preset delivers an average of 171 FPS, making it the fastest configuration tested. Medium averages 155 FPS, with a recorded minimum of 132 FPS and a maximum of 179 FPS, indicating consistent frame pacing. High averages 137 FPS. Ultra, the most demanding preset at this resolution, still averages 111 FPS. These figures demonstrate that the CPU and GPU pair have substantial headroom at 1080p, with even the heaviest workload leaving a 51 FPS margin above the 60 FPS threshold.

Moving to 2560x1440, performance remains strong but the scaling costs are visible. Low averages 114 FPS, a drop of 33% from the 1080p Low result. Medium averages 104 FPS, with a maximum of 119 FPS and a minimum of 88 FPS. High averages 92 FPS. Ultra averages 74 FPS, which is still above the 60 FPS playable threshold but represents a significant 33% reduction from the 1080p Ultra result. The gap between Low and Ultra at this resolution is 40 FPS, or 35%, highlighting that the visual preset has a substantial impact on the workload.

At 3840x2160, the performance profile changes character. Low averages 64 FPS, barely clearing the playable threshold. Medium averages 59 FPS, with a minimum of 50 FPS and a maximum of 67 FPS, which places it just below the 60 FPS line. High averages 52 FPS. Ultra averages 42 FPS, which is a 61% drop from the 1080p Ultra result and 30% below the 60 FPS target. The data shows that the GPU becomes the limiting factor at 4K, as the frame rate collapses with each step up in preset quality.

The minimum and maximum figures recorded for Medium settings at each resolution provide insight into frame time consistency. At 1080p Medium, the 132 FPS minimum and 179 FPS maximum represent a spread of 47 FPS, which is 30% of the average. At 1440p Medium, the minimum of 88 FPS and maximum of 119 FPS show a spread of 31 FPS, or 30% of the average. At 4K Medium, the minimum of 50 FPS and maximum of 67 FPS show a spread of 17 FPS, or 29% of the average. The relative stability across resolutions indicates that the frame delivery is consistent, not spiky, which is important for a smooth gameplay experience.

Best Settings per Resolution

For 1920x1080, the recommended setting is Ultra. The data shows an average of 111 FPS, which is well above the 60 FPS playable threshold. There is no reason to compromise on visual quality at this resolution, as even the heaviest preset leaves significant performance on the table. The 111 FPS average suggests that the system can handle the maximum visual load with headroom to spare, making Ultra the clear choice for owners of 1080p displays.

For 2560x1440, the best setting is also Ultra, with an average of 74 FPS. This clears the 60 FPS threshold with a 14 FPS margin. The data indicates that this is a comfortable setting for 1440p, as the average is not precariously close to the playability line. While a more conservative preset would provide a higher frame rate, Ultra offers the best visual quality while maintaining a solid playable performance.

For 3840x2160, the best setting that stays at or above 60 FPS is Low, with an average of 64 FPS. This is the only preset at 4K that clears the threshold. Medium falls just short at 59 FPS, and High and Ultra are further behind. The data suggests that users with 4K displays should run the game at Low settings to maintain a playable frame rate, accepting a significant reduction in visual fidelity.

CPU and GPU Roles

The scaling between resolutions reveals which component is the primary bottleneck. At 1080p, the CPU is likely the more active partner in determining frame rate, as the GPU is not heavily stressed. The difference between Low and Ultra at 1080p is 60 FPS (from 171 to 111), which shows that the preset has an effect, but the absolute numbers are high enough to suggest the CPU is doing substantial work. The Ryzen 7 5700, with its 8 cores and 16 threads, is well-equipped for the game's physics and logic.

At 1440p, the GPU begins to exert more influence. The scaling from Low to Ultra is 40 FPS (from 114 to 74), a similar relative drop to 1080p, but the absolute numbers are lower. This suggests the GPU is starting to be the limiting factor, as the resolution increase demands more fill rate and shading work. The CPU is still capable of feeding the GPU at this resolution, given that the frame rates remain above 74 FPS.

At 4K, the GPU is the clear dominant constraint. The scaling from Low to Ultra is 22 FPS (from 64 to 42), and the average at High is only 52 FPS. This is a classic sign of GPU saturation, where the pixel throughput of the Intel Arc B390 becomes the wall. The CPU's role is diminished at this resolution, as it can prepare frames faster than the GPU can render them. The data confirms that the GPU's 9th percentile ranking among all GPUs explains why.

The frame rate differences between resolutions at the same preset are also informative. For example, Ultra at 1080p averages 111 FPS, at 1440p it averages 74 FPS, and at 4K it averages 42 FPS). This is a 33% reduction from 1080p to 1440p, and another 43% reduction from 1440p to 4K. The non-linear drop is characteristic of a GPU that is running out of processing capacity as pixel count rises.

The Verdict

Based on the recorded data, this PC can run Roblox, but the experience depends heavily on the display resolution. At 1920x1080, the system is unquestionably capable. All four presets, Low, Medium, High, and Ultra, clear the 60 FPS threshold, with Ultra averaging 111 FPS. This is a clear yes for 1080p gaming, with performance to spare for the game's most demanding settings.

At 2560x1440, the system also passes. All four presets clear 60 FPS, with Ultra averaging 74 FPS. The verdict is a comfortable yes, with enough headroom to enjoy the game at maximum settings without worrying about drops below the playability line. The minimum recorded for Medium at 88 FPS indicates that even the heaviest scenes should stay well above 60 FPS.

At 3840x2160, the verdict is a conditional yes. The Low preset clears the 60 FPS threshold at 64 FPS, but Medium falls below it at 59 FPS, and High and Ultra are far behind. The system can run the game at 4K, but only at the lowest visual preset. Users prioritizing 4K over visual quality will be satisfied, but those expecting to use Medium or higher will be disappointed. The recorded data places this combination at rank 3289 out of 3711 tested combos in this game, which indicates it is in the lower portion of the distribution, a ranking driven primarily by the GPU's limitations.

Similar Performance Alternatives

The CPU and GPU each have a set of closely matched rivals based on their average benchmark scores. For the AMD Ryzen 7 5700, the nearest rivals in the database are the Intel Xeon D-2752TER, which scores 25,530 and is 0.1% slower, and the AMD Ryzen 5 6600H, which scores 25,550 and is also 0.1% slower. The AMD Ryzen 5 7640U scores 25,485 and is 0.1% faster, and the AMD Ryzen 7 5825U scores 25,446 and is 0.3% faster. These CPUs would behave nearly identically in Roblox, meaning the game's logic and physics performance would be indistinguishable from the Ryzen 7 5700.

For the Intel Arc B390, the nearest rivals are all NVIDIA parts, which shows how low-end this GPU is. The NVIDIA GeForce GT 520MX scores 1,463, which is 1.3% slower. The NVIDIA GeForce 800M scores 1,460 and is 1.5% slower. The NVIDIA GeForce GT 625 OEM scores 1,446 and is 2.5% slower. The NVIDIA GeForce GT 710 scores 1,443 and is 2.7% slower. These GPUs would behave similarly under load, meaning they would all struggle at 4K and provide a similar experience at 1080p.

For the overall system, the CPU is a strong performer, ranking in the 78th percentile among all CPUs, while the GPU is in the 9th percentile among all GPUs. This mismatch means that swapping the GPU for any of its nearest rivals would not change the frame rates at 4K, as they are all equally slow. Swapping the CPU for its nearest rivals would also not change the outcome, as they are all within 0.3% of each other in score.

How This Combo Ranks

This specific combination of the AMD Ryzen 7 5700 and the Intel Arc B390 is ranked 3289 out of 3711 tested combinations in Roblox. This puts the combo in the bottom 11% of all tested systems for this game. The rank is driven heavily by the GPU, which is in the 9th percentile of all GPUs. The CPU's 78th percentile ranking is not enough to compensate for the GPU's weak output in a game that is more demanding on the GPU at higher resolutions.

The frame rate data confirms this ranking. At 1080p, the system performs well, but the absolute numbers are not exceptional for a system with a 78th percentile CPU. At 4K, the performance is severely limited. The combo's low rank is a direct consequence of the GPU's inability to handle the pixel workload at higher resolutions. Users with this system should expect a below-average experience compared to the wide range of other tested combinations, particularly if they intend to play at resolution settings above 1080p.