Roblox

The Intel Core i5-11400F paired with the Intel Arc B390 presents a mixed bag for Roblox, heavily dependent on your target resolution. The data shows a clear pattern: this combo is excellent for mainstream 1080p and 1440p gaming, but struggles to maintain smooth performance at 4K with higher presets. The measured results indicate that while the CPU is a solid performer (ranking in the 71st percentile among all CPUs), the GPU is the limiting factor, sitting in the 9th percentile among all GPUs. This pairing results in a combo rank of 3289 out of 3711 tested combinations.

Measured FPS Breakdown

At 1920x1080, this combo delivers exceptionally high frame rates across all settings. The recorded data shows an average of 171 FPS on Low settings, which drops to 155 FPS on Medium. High settings still produce a very respectable 137 FPS average, and even pushing to Ultra yields 111 FPS. For the Medium preset, the database also recorded a minimum of 132 FPS and a maximum of 179 FPS, indicating consistent performance without significant dips.

Moving to 2560x1440, the performance remains strong, though the scaling shows the GPU starting to work harder. Low settings produce an average of 114 FPS, while Medium sits at 104 FPS with a recorded minimum of 88 FPS and maximum of 119 FPS. High settings average 92 FPS, and Ultra still clears the 60 FPS threshold comfortably with a 74 FPS average.

The situation changes dramatically at 3840x2160 (4K). Here, the GPU's limitations become apparent. Low settings are the only preset that remains fluid, achieving an average of 64 FPS. Medium settings drop to an average of 59 FPS, with a minimum of 50 FPS and a maximum of 67 FPS, making it borderline. High settings average 52 FPS, and Ultra falls to 42 FPS. These figures show that 4K gaming with this combo is only viable on the lowest settings.

CPU and GPU Roles

The data reveals a clear division of labor between the Intel Core i5-11400F and the Intel Arc B390. The CPU, with its 6 cores and 12 threads, provides ample processing power for Roblox's physics and game logic, as evidenced by its strong benchmark scores (a Cinebench R23 multi-core score of 14340 and a PassMark single-thread score of 2981). This headroom means the CPU is rarely the bottleneck at any resolution.

The GPU, however, tells a different story. The Intel Arc B390, despite being built on the Xe3-LPG architecture, is positioned at the low end of the performance spectrum (9th percentile). Its 3DMark Steel Nomad score of 1482 puts it in the same class as older entry-level discrete GPUs. The frame rate scaling across resolutions confirms this: at 1440p, the average FPS drops by roughly 30-40% compared to 1080p, which is expected. But the drop from 1440p to 4K is far more severe, with the 4K High preset (52 FPS) being less than half of the 1440p High preset (92 FPS). This disproportionate scaling indicates that the GPU is running out of pixel-pushing capability, while the CPU still has plenty of headroom.

When comparing presets, the pattern is also telling. At 1080p, the difference between Low and Ultra is only 60 FPS (171 vs 111), suggesting the CPU is helping to keep the minimum frame rate high. At 4K, the difference between Low and Ultra is just 22 FPS (64 vs 42), showing that the GPU's raw throughput is the primary constraint, and increasing graphical fidelity has a muted impact because the GPU is already saturated.

How This Combo Ranks

In the database's list of tested combinations, this specific pairing ranks 3289 out of 3711 combos. This puts it in the bottom 11% of all tested systems, which is a direct reflection of the GPU's low standing. While the CPU is a capable mid-range part (its average benchmark score of 17177 places it near the AMD Ryzen 3 PRO 8300G, which scores 17278, and well ahead of the AMD EPYC 7H12 at 17120), the GPU's average benchmark score of 1482 is only marginally higher than the NVIDIA GeForce GT 710 (1443) and roughly similar to the GeForce GT 520MX (1463). The combo rank is dragged down by this imbalance.

For Roblox specifically, the rank means that most other tested hardware combinations will deliver higher frame rates. However, the actual gameplay experience at 1080p and 1440p is far better than the rank suggests, because the game is not exceptionally demanding at those resolutions. The rank is a global measure across all games and resolutions, and Roblox's relatively light rendering load allows this combo to punch above its weight, particularly at lower resolutions.

The Verdict

Yes, this PC can run Roblox, but the experience depends entirely on the resolution you choose. The database's verdict is clear and unambiguous.

At 1920x1080, all four presets (Low, Medium, High, Ultra) are fully playable, with average frame rates ranging from 111 FPS (Ultra) to 171 FPS (Low). This is a flawless experience for any monitor with a 60Hz or even 144Hz refresh rate.

At 2560x1440, the verdict is equally positive. All presets, including Ultra, maintain an average above the 60 FPS playable threshold. The Ultra preset averages 74 FPS, which provides a smooth and visually rich experience.

At 3840x2160, the situation is more restrictive. Only the Low preset is considered fully playable, with an average of 64 FPS. The Medium preset falls just short at 59 FPS average, and High and Ultra are not recommended for 4K gaming. If you have a 4K monitor, you will need to use Low settings to achieve a consistent 60 FPS.

FAQ

Q: Can this combo run Roblox at 1080p with maximum settings?

A: Yes, the data shows the Ultra preset at 1920x1080 achieves an average of 111 FPS, which is well above the 60 FPS playable threshold.

Q: What is the highest playable settings at 4K?

A: At 3840x2160, only the Low preset is playable, with an average of 64 FPS. The Medium preset averages 59 FPS, which is below the 60 FPS threshold.

Q: Is the Intel Arc B390 the bottleneck for this system?

A: The benchmark results indicate yes. The GPU's average score of 1482 places it in the 9th percentile of all GPUs, while the CPU is in the 71st percentile. The severe frame rate drop from 1440p to 4K supports this conclusion.

Q: How does this combo compare to other tested systems?

A: It ranks 3289 out of 3711 combinations in the database. This low rank is primarily due to the GPU's low benchmark scores, despite the CPU performing well.

Q: What is the best resolution to use with this PC?

A: 2560x1440 is the optimal choice, as it allows you to run the Ultra preset at 74 FPS average, providing high visual quality without sacrificing smoothness.

Q: What is the frame rate difference between Low and Ultra at 1080p?

A: At 1920x1080, the Low preset averages 171 FPS, while the Ultra preset averages 111 FPS. This represents a 60 FPS difference between the lowest and highest graphics quality settings.

Best Settings per Resolution

The most demanding preset that stays at or above 60 FPS average at each resolution is as follows.

At 1920x1080, the best settings are Ultra, which delivers an average of 111 FPS. This allows for the highest visual fidelity with a frame rate that is nearly double the playable threshold.

At 2560x1440, the best settings are also Ultra, achieving an average of 74 FPS. This is the sweet spot for this combo, balancing high detail with a comfortable margin above 60 FPS.

At 3840x2160, the best settings are Low, with an average of 64 FPS. This is the only preset at 4K that maintains a playable frame rate, and it does so by just a 4 FPS margin. For a more stable experience at 4K, consider using a lower resolution, as the Medium preset's average of 59 FPS is too close to the threshold for comfort.