Roblox

Measured FPS Breakdown

At 1920x1080, the recorded data shows a comfortable spread across all four settings presets. The Low preset delivers an average of 154 FPS, while Medium averages 140 FPS with a minimum of 119 FPS and a maximum of 161 FPS. High settings produce an average of 124 FPS, and Ultra remains well above the 60 FPS playability threshold at 101 FPS on average. The delta between Low and Ultra is 53 FPS, which indicates that Roblox scales meaningfully with graphical load at this resolution, but even the heaviest preset leaves substantial headroom.

Moving to 2560x1440, the averages step down noticeably. Low averages 103 FPS, Medium averages 94 FPS with a minimum of 80 FPS and a maximum of 108 FPS, and High averages 83 FPS. Ultra at 1440p still clears the playable threshold with an average of 67 FPS. The drop from 1080p to 1440p is consistent: each preset loses roughly 30 to 35 FPS. This scaling pattern suggests that the Intel Arc B370 is the limiting factor as pixel count rises, since the CPU workload for Roblox does not typically quadruple with resolution.

At 3840x2160, the picture changes fundamentally. No preset reaches the 60 FPS playability threshold. Low averages 58 FPS, Medium averages 53 FPS with a minimum of 45 FPS and a maximum of 61 FPS, High averages 47 FPS, and Ultra drops to 38 FPS. The minimum recorded value at 2160p Medium is 45 FPS, which falls well below the playable mark. The step from 1440p to 2160p costs roughly 25 to 30 FPS per preset, and the Ultra preset at 4K is barely half of the 1080p Ultra average.

The database only records min and max values for Medium presets across all three resolutions. At 1080p Medium, the spread from min to max is 42 FPS; at 1440p Medium it narrows to 28 FPS; at 2160p Medium it is 16 FPS. This tightening range at higher resolutions indicates that frame pacing becomes more consistent when the GPU is more heavily loaded, likely because the bottleneck shifts away from CPU-bound variability.

FAQ

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

A: Yes. At 1920x1080 with Ultra settings, the recorded average FPS is 101, which is 41 FPS above the 60 FPS playability threshold. All four presets at this resolution clear the threshold.

Q: What is the highest playable setting at 1440p?

A: Ultra is playable at 2560x1440 with an average of 67 FPS. The verdict data lists High, Low, Medium, and Ultra all as playable at this resolution, with Ultra being the best setting at 67 FPS.

Q: Is 4K playable with this combination?

A: No. At 3840x2160, none of the four presets reach 60 FPS. The closest is Low at 58 FPS average, followed by Medium at 53 FPS, High at 47 FPS, and Ultra at 38 FPS.

Q: How much performance is lost when moving from 1080p to 1440p?

A: The drop is roughly 30 to 35 FPS per preset. For example, High goes from 124 FPS at 1080p to 83 FPS at 1440p, and Ultra goes from 101 FPS to 67 FPS.

Q: Which component is more important at 1440p and above?

A: The scaling data points to the Intel Arc B370 as the primary constraint. The GPU's benchmark percentile is 5, and its average score of 1184 places it near older discrete GPUs. The CPU, by contrast, has a percentile of 72 and an average benchmark score of 18683.

Q: Does the Intel Core i5-12400 bottleneck the Arc B370 in this game?

A: At 1080p, the CPU's single-thread performance (3dmark single-thread score of 910, Cinebench R23 single-core score of 2257) is sufficient to push frame rates above 150 FPS on Low. The frame rate ceiling at lower resolutions is likely CPU-bound, but the GPU becomes the limiting factor as resolution increases.

How This Combo Ranks

The combination of Intel Core i5-12400 and Intel Arc B370 ranks 3417 out of 3711 tested combos in the database for Roblox. That places this pairing in the bottom 8 percent of all configurations tested. The rank reflects the GPU's position in the overall hierarchy: the Arc B370 sits at the 5th percentile among all GPUs, with an average benchmark score of 1184. The CPU, on the other hand, sits at the 72nd percentile among all CPUs with an average score of 18683.

This disparity between the two components explains the ranking. In a game like Roblox, which is not particularly demanding on modern hardware, the CPU is more than adequate. The database shows the i5-12400 scoring 15989 in Cinebench R23 multicore and 3456 in Passmark single-thread, numbers that place it well above the median for desktop processors. The GPU, however, is the weak link. Its 3DMark Steel Nomad DX12 score of 1184 is comparable to integrated graphics from over a decade ago, according to the nearest rival data.

The practical consequence is that this combo behaves like a CPU-strong, GPU-weak system. At 1080p, the CPU can feed the GPU enough frames to reach 154 FPS on Low, but the GPU cannot sustain that throughput at higher resolutions. The rank of 3417 out of 3711 reflects the overall balance: it is a workable setup for esports and lightweight titles at lower resolutions, but it will struggle with heavier graphical loads.

The Verdict

The database's verdict is clear and consistent across resolutions. At 1920x1080, all four presets (Low, Medium, High, Ultra) are playable, with the best setting being Ultra at an average of 101 FPS. At 2560x1440, all four presets are also playable, with Ultra as the best setting at 67 FPS. At 3840x2160, no preset reaches the 60 FPS threshold.

This means the PC can run Roblox at 1080p and 1440p with maximum settings and remain above 60 FPS. At 4K, it falls short across the board. The closest result is Low at 58 FPS, which is 2 FPS below the playability mark. Medium at 2160p has a minimum of 45 FPS, which would be noticeable during scenes with many players or complex builds.

For users with a 1080p or 1440p monitor, this system delivers a smooth experience at Ultra. For 4K owners, the recommendation is to lower resolution to 1440p or accept sub-60 FPS performance. The data does not show any 2160p preset as playable, so there is no in-game setting that will fix 4K performance.

Similar Performance Alternatives

For the GPU, the nearest rivals in the database are ATI Mobility Radeon HD 5570 (average score 1186, delta of -0.2 percent), ATI Radeon HD 5770 (average score 1190, delta of -0.5 percent), AMD Radeon HD 7650M (average score 1192, delta of -0.7 percent), and AMD FirePro M2000 (average score 1168, delta of +1.4 percent). These deltas are all within 2 percent of the Arc B370's score of 1184, meaning any of these GPUs would produce nearly identical frame rates in Roblox at the same settings and resolutions.

For the CPU, the nearest rivals are AMD EPYC 7643 (average score 18697, delta of -0.1 percent), Intel Core i7-1355U (average score 18730, delta of -0.3 percent), AMD Ryzen AI 5 330 (average score 18811, delta of -0.7 percent), and Intel Core i3-14100F (average score 18519, delta of +0.9 percent). All of these CPUs fall within 1 percent of the i5-12400's average score of 18683. In practice, swapping the i5-12400 for any of these would change Roblox frame rates by less than 1 percent, assuming the same GPU.

The practical takeaway is that the GPU is the swing factor. If a user has the i5-12400 and is considering a GPU upgrade, moving to a card with a meaningfully higher 3DMark score would produce a larger FPS gain than any CPU swap within this rival group. Conversely, if the Arc B370 is fixed, upgrading the CPU to one of these rivals would yield no measurable improvement.

Best Settings per Resolution

At 1920x1080, the most demanding preset that stays at or above 60 FPS is Ultra, with an average of 101 FPS. This is the highest preset available, so there is no further headroom to explore within the game's settings.

At 2560x1440, the most demanding preset that stays at or above 60 FPS is also Ultra, with an average of 67 FPS. This is only 7 FPS above the threshold, so users who prefer a larger safety margin might consider High at 83 FPS, but the data confirms Ultra is playable.

At 3840x2160, no preset reaches 60 FPS. The closest is Low at 58 FPS, which is 2 FPS below the threshold. Medium averages 53 FPS, High averages 47 FPS, and Ultra averages 38 FPS. The database marks no playable settings at this resolution, so the recommendation is to use 1440p or below.

CPU and GPU Roles

The data reveals a clear division of labor between the Intel Core i5-12400 and the Intel Arc B370. At 1920x1080, the CPU's strong single-thread performance (3dmark single-thread score of 910, Passmark single-thread score of 3456) allows frame rates to exceed 150 FPS on Low. The gap between Low (154 FPS) and Ultra (101 FPS) at this resolution is 53 FPS, which indicates that the GPU is doing more work as settings rise, but the CPU is still capable of feeding it.

At 2560x1440, the average FPS across presets drops by roughly 30 percent compared to 1080p. This is a larger drop than what would be expected from pixel count alone if the CPU were the bottleneck. The GPU's pixel rate of 48.00 GPixel/s and texture rate of 96.00 GTexel/s become limiting factors as the render target grows. The fact that Ultra still holds 67 FPS suggests the GPU has enough raw throughput for 1440p, but just barely.

At 3840x2160, the GPU is clearly the dominant constraint. The pixel count is 4.5 times that of 1080p, and the average FPS drops to roughly one-third of the 1080p values. Low at 58 FPS, Medium at 53 FPS, High at 47 FPS, and Ultra at 38 FPS all indicate that the Arc B370's 6.144 TFLOPS of FP32 compute is insufficient for 4K in this title. The CPU's role diminishes because the GPU cannot produce enough frames to saturate the i5-12400's capabilities.

The scaling between presets also tells a story. At 1080p, the difference between Low and Ultra is 53 FPS; at 1440p it is 36 FPS; at 2160p it is 20 FPS. As resolution increases, the gap between presets narrows, which is typical of GPU-bound scenarios. At 2160p, even dropping from Ultra to Low only recovers 20 FPS, confirming that the GPU is running out of headroom across all settings. The CPU, meanwhile, maintains its position as a capable performer, with its 6 cores and 12 threads providing ample bandwidth for Roblox's physics and scripting workloads.