Roblox

The Intel Core i5-12400 paired with the Intel Arc B390 presents an unusual configuration for Roblox, a game that is typically not demanding on high-end hardware. The data indicates a combination that is heavily constrained by its graphics solution, despite the CPU’s solid performance profile. This analysis examines the measured frame rates, component roles, and practical settings for this specific pairing, using only the provided benchmark data.

Resolution Scaling

The measured FPS data shows a clear and consistent decline as resolution increases, which is the primary indicator of where the bottleneck lies in this system. At 1080p with High settings, the combo produces an average of 137 FPS. Moving to 1440p drops that figure to 92 FPS, a reduction of 45 frames per second. The jump to 4K is even more punishing, with the average falling to 52 FPS. This scaling pattern—a roughly 33% performance loss from 1080p to 1440p, and another 43% loss from 1440p to 4K—suggests that the rendering workload is overwhelming the graphics processor.

The behavior is consistent across all settings presets. For instance, at Low settings, the system delivers 171 FPS at 1080p, but this falls to 114 FPS at 1440p and 64 FPS at 4K. This linear degradation with resolution, regardless of the graphical complexity, points directly to the GPU as the limiting component. The CPU, with its six cores and twelve threads, is unlikely to be the primary restriction in a sandbox title like Roblox, which typically does not scale heavily with core counts at these frame rates. The data shows that the Arc B390 simply cannot maintain high throughput as the pixel count increases.

This is not a case of the CPU holding back performance at lower resolutions either. While the 1080p numbers are high, the fact that they drop so steeply with resolution indicates that the GPU is already working near its maximum capacity even at 1080p. The benchmark results demonstrate that this combo is best suited for 1080p gaming, where it can achieve playable frame rates across all settings, but it struggles to maintain a smooth experience at higher resolutions.

How This Combo Ranks

Within the database of tested combinations for Roblox, this specific pairing of the Intel Core i5-12400 and Intel Arc B390 ranks at position 2661 out of 3010 total combos. This places it in the lower percentile of tested systems, which is a significant finding given the CPU's capabilities. The rank of 2661 indicates that a large majority of other CPU-GPU pairings tested in this game deliver higher average frame rates.

The CPU itself is not the reason for this low ranking. The Intel Core i5-12400 has an average benchmark score of 18683 and sits in the 72nd percentile of all CPUs. Its nearest rival, the AMD EPYC 7643, scores 18697, a negligible difference of -0.1%. This shows that the processor is a mid-to-high-tier performer in general compute tasks. However, the GPU tells a different story. The Intel Arc B390 has an average benchmark score of just 1482, placing it in the 9th percentile of all GPUs. Its nearest rivals are extremely old or low-end parts like the NVIDIA GeForce GT 520MX (scoring 1463) and the NVIDIA GeForce 800M (scoring 1460).

This massive disparity between a 72nd-percentile CPU and a 9th-percentile GPU explains the combo's overall rank. The system’s performance is dictated by its weakest link, and in this case, that is unequivocally the graphics processor. The combo rank of 2661 suggests that users would see significantly better results in Roblox with a more balanced pairing, even if it meant using a less powerful CPU. The data confirms that the i5-12400 has ample headroom, but the Arc B390 is unable to leverage it effectively in this title.

GPU Role

The Intel Arc B390 is an integrated graphics processor (IGP) based on the Xe3-LPG architecture, built on a 3 nm process. Its role in this combo is the primary bottleneck, as evidenced by both its low percentile ranking and the game's resolution scaling. The GPU operates at a base clock of 300 MHz and can boost up to 2500 MHz. While the boost clock is respectable, the hardware resources are limited. It features 1536 shading units, 48 texture mapping units, and 24 raster output units. These specifications, combined with the memory configuration, are the key constraints.

The memory situation is particularly critical. The Arc B390 uses System Shared memory, meaning it has no dedicated VRAM of its own. Its memory bandwidth is listed as "System Dependent," which means the performance is tied directly to the speed of the system's main RAM. This is a major disadvantage in a game like Roblox, which can be sensitive to memory bandwidth, especially at higher resolutions. The lack of dedicated VRAM forces the GPU to compete with the CPU for memory access, which can lead to stuttering and reduced frame rates. The data shows that at 4K Medium, the minimum FPS is 50, highlighting the potential for frame drops in demanding scenes.

The GPU's raw compute performance is also a limiting factor. It offers a FP32 performance of 7.680 TFLOPS. While not a trivial number, it is clearly insufficient for high-resolution gaming in this title. The pixel rate is listed at 60.00 GPixel/s, which helps explain the significant frame rate drops as resolution increases. The GPU is simply not fast enough to fill the increased number of pixels at 1440p and 4K resolutions. The measured FPS data at Ultra settings, which drops to 42 FPS at 4K, confirms that the graphics processor is overwhelmed when both resolution and graphical fidelity are maximized.

Settings Recommendations

Based on the measured frame rates, the optimal settings for this combo depend heavily on the target resolution and desired smoothness. For 1080p gaming, the data shows that all settings are playable. The High preset yields an average of 137 FPS, while Low produces 171 FPS. However, the Medium preset offers a strong balance, with an average of 155 FPS and a minimum of 132 FPS, ensuring a smoother experience than High with only a modest drop in average frame rate. For the most consistent performance at 1080p, Low is the safest choice, but Medium provides a good balance of visual quality and speed.

At 1440p, the choice becomes more critical. The High preset averages 92 FPS, which is generally playable, but the Medium preset provides more headroom with an average of 104 FPS and a minimum of 88 FPS. The Ultra preset drops to 74 FPS, which may feel less fluid in fast-paced moments. For a stable 1440p experience, Medium is the recommended preset, as it stays comfortably above 60 FPS and maintains a high minimum frame rate.

At 4K, the system is severely constrained. The High preset averages only 52 FPS, and the Ultra preset falls to 42 FPS. The Low preset provides the only 60+ FPS average at 64 FPS, though this comes with a significant visual quality reduction. The Medium preset averages 59 FPS, which is borderline, and its minimum of 50 FPS could lead to noticeable hitches. For 4K, users should be prepared to play on Low settings to achieve a reasonably smooth experience, or accept lower frame rates on higher presets. The data strongly suggests that 1080p is the intended resolution for this hardware combination.

Measured FPS Breakdown

The following is a detailed breakdown of the measured average FPS for every tested configuration. The data shows a clear pattern of performance degradation with increased resolution and graphical settings.

At 1920x1080, the system performs best. The Low preset delivers an average of 171 FPS. The Medium preset follows closely with an average of 155 FPS, with a minimum of 132 FPS and a maximum of 179 FPS. The High preset produces an average of 137 FPS. The most demanding Ultra preset yields an average of 111 FPS.

At 2560x1440, the frame rates drop considerably. The Low preset achieves an average of 114 FPS. The Medium preset averages 104 FPS, with a minimum of 88 FPS and a maximum of 119 FPS. The High preset results in an average of 92 FPS. The Ultra preset falls to an average of 74 FPS.

At 3840x2160, the system is pushed to its limits. The Low preset manages an average of 64 FPS. The Medium preset averages 59 FPS, with a minimum of 50 FPS and a maximum of 67 FPS. The High preset drops to an average of 52 FPS. The Ultra preset yields the lowest result, with an average of 42 FPS.

FAQ

Q: Is the Intel Core i5-12400 a strong processor for gaming?

A: Yes, the CPU is a capable part. It has an average benchmark score of 18683, placing it in the 72nd percentile of all CPUs. Its performance is nearly identical to the AMD EPYC 7643, which has an average score of 18697, a delta of only -0.1%.

Q: Why is the combo rank for this system so low?

A: The combination ranks 2661 out of 3010 tested combos. This is primarily due to the GPU, which ranks in the 9th percentile of all GPUs. The Intel Arc B390 has an average benchmark score of 1482, which is only comparable to very old parts like the NVIDIA GeForce GT 520MX (1463).

Q: What is the best resolution to play Roblox with this hardware?

A: The data indicates that 1920x1080 is the optimal resolution. At 1080p, even the Ultra preset achieves an average of 111 FPS, and the High preset provides a smooth 137 FPS. Performance degrades significantly at higher resolutions.

Q: How does the Arc B390's memory configuration affect performance?

A: The GPU uses System Shared memory, meaning it has no dedicated VRAM. Its bandwidth is "System Dependent," which can cause performance to vary based on the system's main memory speed. This is a likely contributor to the frame rate drops seen at higher resolutions.

Q: Which settings preset offers the best experience at 1440p?

A: The Medium preset is recommended for 1440p. It provides an average of 104 FPS with a minimum of 88 FPS, offering a good balance between visual quality and performance. The High preset at 92 FPS is also viable, but the Ultra preset at 74 FPS may be less consistent.

Q: Can this system handle 4K gaming?

A: It can run the game at 4K, but with compromises. The Low preset averages 64 FPS, which is playable. However, the High and Ultra presets drop to 52 FPS and 42 FPS respectively, which may not provide a sufficiently smooth experience for all users.

CPU Role

The Intel Core i5-12400 is a 6-core, 12-thread processor from the Alder Lake architecture, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. It has a 65 W TDP and supports DDR4 and DDR5 memory. Its role in this combo is to provide a robust foundation, but it is not the limiting factor in Roblox. The CPU's benchmark scores are strong, with a Cinebench R23 multicore score of 15989 and a single-core score of 2257. This indicates ample processing power for game logic and physics.

In this specific game, the CPU's performance is more than sufficient. The bottleneck is clearly the GPU, as evidenced by the resolution scaling. If the CPU were the limiting factor, we would expect to see less variation in frame rates between different resolutions, as the CPU workload would remain relatively constant. Instead, the steep FPS drops at higher resolutions show that the graphics processor is struggling to keep up.

The CPU's 18 MB of shared L3 cache and 12 threads help ensure that it does not introduce stutter, even at lower resolutions where frame rates are high. The data shows that the i5-12400 is a well-balanced processor that would pair effectively with a much more powerful GPU. In this configuration, its potential is largely unrealized, as it is held back by the Arc B390. The measured results reflect the GPU's limitations, not a deficiency in the CPU.