Roblox

The Intel Core i5-11400F paired with the Intel Arc B390 presents a unique case for Roblox, primarily because the graphics solution is an integrated-class part (IGP) based on the Xe3-LPG architecture. The CPU is a 6-core, 12-thread Rocket Lake desktop processor with a base clock of 2.60 GHz and a boost clock of 4.40 GHz. For a game like Roblox, which is often sensitive to single-thread performance, the i5-11400F’s boost capability is significant. Its 3DMark single-thread score of 868 and Cinebench R23 single-core score of 2024 indicate that the processor has ample headroom for the game's primary logic thread. While the CPU has 12 MB of shared L3 cache and supports DDR4 memory, the data suggests that the bottleneck in this configuration is not the processor.

The Arc B390’s performance class is the limiting factor here. Its 3DMark Steel Nomad DX12 score of 1482 places it in the 9th percentile of all GPUs, putting it in the same performance tier as older discrete GPUs like the NVIDIA GeForce GT 520MX, which is only 1.3% behind. This is a fundamental constraint. The CPU’s multi-threaded capabilities, evidenced by a Cinebench R23 multicore score of 14340, are largely irrelevant when the GPU cannot keep up with frame generation. In CPU-bound scenarios, the i5-11400F would excel, but the measured FPS shows that Roblox is heavily GPU-limited at higher settings and resolutions. The 12 execution units and 1536 shading units on the Arc B390 are simply not enough to push high frame rates when graphical load increases. Therefore, the CPU's role is to provide a stable platform without stuttering, which its 71st percentile ranking among all CPUs supports, while the GPU dictates the absolute performance ceiling.

FAQ

Q: Is the Intel Core i5-11400F bottlenecking the Intel Arc B390 in Roblox?

A: No. The data indicates the opposite. The CPU's average benchmark score of 17177 places it in the 71st percentile of all CPUs, while the GPU's score of 1482 places it in the 9th percentile. In Roblox, the frame rates drop significantly when settings are raised, which is characteristic of a GPU bottleneck, not a CPU one.

Q: How does this CPU compare to its nearest rivals in overall processing power?

A: The i5-11400F is statistically tied with its closest competitors. It is 0.3% faster than the AMD EPYC 7H12 and 0.6% faster than the Intel Core Ultra 7 164U. Conversely, it is 0.4% slower than the Intel Core i5-12450H and 0.6% slower than the AMD Ryzen 3 PRO 8300G. These are negligible differences for gaming.

Q: What is the best settings preset for 1080p gaming?

A: The Low preset yields the highest average frame rate at 171 FPS. However, the Medium preset still provides a very playable 155 FPS average with a minimum of 132 FPS, making it the better choice for a balance of visual quality and performance, as the High preset drops to 137 FPS.

Q: Is the Arc B390's performance comparable to any dedicated graphics cards?

A: Yes, its benchmark score of 1482 is very close to several older NVIDIA entry-level cards. It is 1.3% faster than the GeForce GT 520MX, 1.5% faster than the GeForce 800M, 2.5% faster than the GT 625 OEM, and 2.7% faster than the GT 710. This places it firmly in the entry-level category.

Q: Will lowering the resolution from 1440p to 1080p significantly improve performance?

A: Yes, it does. At Medium settings, dropping from 2560x1440 to 1920x1080 increases the average FPS from 104 to 155, which is an improvement of 51 FPS. This large jump confirms that the GPU is the primary limiting component, as it benefits greatly from the reduced pixel count.

Q: Can this combo handle Roblox at 4K resolution?

A: Yes, but with compromises. At 3840x2160, the Medium preset averages 59 FPS, which is playable. The High preset averages 52 FPS, and the Ultra preset drops to 42 FPS. For a smoother experience at 4K, the Low preset is required, which averages 64 FPS.

Resolution Scaling

The performance scaling across resolutions clearly identifies the Intel Arc B390 as the limiting factor in this configuration. Starting at 1920x1080 with Medium settings, the system produces a solid 155 FPS average. Moving to 2560x1440 at the same settings, the frame rate drops to 104 FPS, a substantial 32.9% reduction. This is a steep penalty for a resolution increase of roughly 78% in pixel count, indicating that the GPU is running out of fillrate and shading power. The trend continues when scaling to 3840x2160, where the Medium preset yields only 59 FPS on average. This represents a 61.9% drop from the 1080p result, which is a severe performance collapse.

This scaling behavior is a classic symptom of a GPU bottleneck. If the CPU were the limiting factor, the FPS would remain relatively flat as resolution increases because the CPU's workload (draw calls, physics, game logic) does not change with pixel count. Instead, we see that the frame rate is inversely proportional to the resolution, meaning the Arc B390's rendering capabilities are being saturated. The i5-11400F is powerful enough to feed the GPU at all resolutions, but the GPU simply cannot process the increased graphical load. For example, at 1440p Low, the system hits 114 FPS, but at 4K Low, it drops to 64 FPS. This shows that even at the lowest settings, the GPU struggles with the pixel throughput required at 4K.

The data suggests that for a smooth experience, 1080p is the sweet spot for this combo. At 1440p, the system is capable of high refresh rates, but only at Low settings. The 4K results are borderline playable at best, with only the Low preset staying above 60 FPS. The minimum FPS readings, where available, reinforce this. At 1080p Medium, the minimum is 132 FPS, ensuring no stutters. At 1440p Medium, the minimum drops to 88 FPS, which is still acceptable. At 4K Medium, the minimum is 50 FPS, which is on the edge of playability. This resolution scaling analysis demonstrates that users should prioritize 1080p for a consistent experience or be prepared for significant frame rate sacrifices at higher resolutions.

How This Combo Ranks

In the database of tested combinations, this specific pairing of the Intel Core i5-11400F and Intel Arc B390 achieves a combo rank of 2661 out of 3010 combos for Roblox. This places it in the bottom 12% of all systems tested. The ranking is a direct consequence of the GPU’s performance class, not the CPU. The processor itself is a competent mid-range part, but it is yoked to a graphics solution that performs at the level of a NVIDIA GeForce GT 710, which is 2.7% slower than the Arc B390. This creates a severe imbalance where the CPU is vastly more powerful than the GPU.

The low rank is a practical indicator that this system is not optimized for high-end gaming performance in Roblox. While the CPU prevents the system from being a complete failure, the GPU holds the entire experience back. In comparison to other combos in the database, the 2661st rank suggests that most other tested systems, even those with older or lower-tier CPUs, achieve better performance because they have more capable discrete graphics cards. The fact that the Arc B390 is an IGP with a 9th percentile GPU ranking is the primary reason for this poor showing.

The data implies that if a user were to take this same CPU and pair it with a more powerful GPU, the combo rank would increase dramatically. The i5-11400F's 71st percentile CPU ranking shows it is capable of supporting a much faster graphics card. Therefore, the combo rank is a reflection of the weakest link in the chain. It serves as a warning that the Arc B390 is a severe bottleneck for the i5-11400F, and that the system's overall performance tier is fundamentally limited by its graphics solution. For a user looking to play Roblox, this rank indicates that the experience will be subpar compared to the majority of other systems in the benchmark database.

Settings Recommendations

Given the measured data, the optimal settings for this system depend heavily on the user's target resolution and refresh rate. For 1080p displays, the Medium preset is the clear recommendation. It provides an average of 155 FPS with a minimum of 132 FPS, which ensures a smooth and responsive experience on high refresh rate monitors. The jump from Low to Medium is worth the performance cost, as the visual quality improvement is significant while still maintaining a frame rate well above 144 FPS. The High preset is a viable alternative if visual fidelity is preferred over maximum frame rate, but the 137 FPS average is a noticeable step down from Medium.

For 1440p users, the Low preset is the only way to achieve a high refresh rate experience, averaging 114 FPS. The Medium preset drops to 104 FPS average with an 88 FPS minimum, which is still playable for most users but may not be ideal for competitive play. The High preset at 92 FPS is acceptable for more relaxed gaming, but the Ultra preset at 74 FPS is likely too inconsistent for fast-paced action. A 1440p user should choose between Low for maximum performance or Medium for a balanced experience, accepting that the frame rate will be lower than at 1080p.

At 4K resolution, the system is severely limited. The only preset that breaks the 60 FPS barrier is Low, with an average of 64 FPS. This is the recommended setting for 4K if playability is the primary concern. The Medium preset averages 59 FPS, which is borderline, but the minimum of 50 FPS might cause noticeable stutters. The High and Ultra presets at 52 FPS and 42 FPS respectively are not recommended for a smooth experience. In summary, the best experience is achieved at 1080p Medium, where the balance of visual quality and frame rate is optimal. Users with 1440p or 4K monitors will need to significantly lower their graphical expectations to achieve playable frame rates.

Measured FPS Breakdown

The following data presents the exact frame rate measurements for the Intel Core i5-11400F and Intel Arc B390 combination in Roblox.

1920x1080:

• Low: The average FPS is 171. This is the highest frame rate recorded for this system.
• Medium: The average FPS is 155, with a minimum of 132 FPS and a maximum of 179 FPS. This shows a stable performance range.
• High: The average FPS drops to 137. This is a significant 11.6% decrease from the Medium preset.
• Ultra: The average FPS is 111. This is the lowest result at 1080p, representing a 35.1% decrease from the Low preset.

2560x1440:

• Low: The average FPS is 114. This remains a playable frame rate for most users.
• Medium: The average FPS is 104, with a minimum of 88 FPS and a maximum of 119 FPS. The minimum FPS indicates that there are occasional dips.
• High: The average FPS is 92. This is a 19.3% decrease from the Low preset at the same resolution.
• Ultra: The average FPS is 74. This is a substantial drop, making the game feel less fluid.

3840x2160:

• Low: The average FPS is 64. This is the only preset at 4K that maintains an average above 60 FPS.
• Medium: The average FPS is 59, with a minimum of 50 FPS and a maximum of 67 FPS. The minimum FPS is below the 60 FPS threshold.
• High: The average FPS is 52. This is a noticeable drop from the Low preset, making the game feel less responsive.
• Ultra: The average FPS is 42. This is the lowest recorded average FPS for this combo, indicating a poor experience at this setting.

The data shows a clear and consistent trend: frame rates are highly sensitive to both resolution and settings. The most significant performance degradation occurs when moving from 1440p to 4K, where the average FPS is nearly halved across all settings. The minimum FPS data for Medium settings at all resolutions shows that the system is capable of maintaining a decent frame rate, but it is not without dips. The overall picture is that this system is best suited for 1080p gaming, with the Medium preset offering the best combination of performance and visual quality.