Roblox

FAQ

Q: Can this combination run Roblox at 1920x1080?

A: Yes. The recorded data shows all four settings presets at 1920x1080 clear the 60 FPS playable threshold. The average FPS ranges from 111 FPS on Ultra to 171 FPS on Low, with Medium at 155 FPS and High at 137 FPS.

Q: What is the best playable setting at 2560x1440?

A: At 2560x1440, Ultra is the best playable setting. The average FPS at Ultra is 74, which is above the 60 FPS threshold. The other presets also clear this threshold: High at 92 FPS, Medium at 104 FPS, and Low at 114 FPS.

Q: Is 4K playable with this CPU and GPU combo?

A: At 3840x2160, only the Low preset clears 60 FPS, with an average of 64 FPS. Medium averages 59 FPS, which falls just below the threshold. High averages 52 FPS, and Ultra averages 42 FPS, so those are not considered playable at 60 FPS.

Q: How does the GPU rank against all other GPUs in the database?

A: The Intel Arc B390 sits in the 9th percentile of all GPUs, with an average benchmark score of 1482 from the 3DMark Steel Nomad DX12 test. This places it in the lower performance tier overall.

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

A: At 1920x1080, Low averages 171 FPS while Ultra averages 111 FPS. That is a 60 FPS difference between the two presets, meaning Ultra still delivers a smooth experience but with a noticeable performance cost.

Q: Are the minimum FPS values recorded for all settings?

A: No. The database only records min and max FPS for the Medium preset at each resolution. At 1080p Medium, min FPS is 132 and max is 179. At 1440p Medium, min is 88 and max is 119. At 4K Medium, min is 50 and max is 67.

CPU and GPU Roles

The recorded data shows a clear pattern: resolution scaling has a strong effect on frame rates, which indicates the GPU becomes more of a limiting factor as pixel count rises. At 1920x1080, the CPU has more headroom to push frames, and the GPU still keeps up well. The average FPS at 1080p High is 137, dropping to 92 at 1440p High, and further down to 52 at 4K High. This progression shows a substantial per-resolution performance cost, highlighting the GPU's role in rendering at higher resolutions.

The CPU, an Intel Core i5-12400 with 6 cores and 12 threads, has a strong single-thread score of 2257 in Cinebench R23 and a multi-thread score of 15989. Roblox is not a heavily threaded game in the recorded data, so the CPU has ample headroom. The GPU, Intel Arc B390, is a lower-tier part with a 9th percentile rank among all GPUs. At each resolution, the gap between Low and Ultra presets widens as resolution increases, which is typical of a GPU-bound scenario.

At 1920x1080, the difference between Low and Ultra is 60 FPS (171 to 111). At 2560x1440, the difference is 40 FPS (114 to 74). At 3840x2160, the difference is 22 FPS (64 to 42). This narrowing delta indicates that at 4K, the GPU is so constrained that even dropping from Ultra to Low only recovers a modest amount of FPS, showing the GPU is the primary limiter. Conversely, at 1080p, the larger delta suggests the CPU can still feed frames, but the GPU still has a clear performance ceiling.

Looking at scaling between resolutions, the Medium preset shows the most complete data with min and max FPS recorded. At 1920x1080 Medium, the average is 155 FPS. Dropping to 1440p Medium results in 104 FPS, a reduction of 51 FPS. Dropping again to 4K Medium results in 59 FPS, a further reduction of 45 FPS. This pattern of roughly equal FPS drops when moving from 1080p to 1440p and then to 4K suggests that the GPU is scaling predictably with pixel count, and that the CPU is not introducing a bottleneck at any resolution tested.

The data does not show a situation where the CPU holds back the GPU, since even at 1080p Low, the GPU is only producing 171 FPS, which is not an extreme frame rate that would require an extremely fast CPU. Therefore, the recorded data indicates the GPU is the primary factor for this game, especially at higher resolutions and higher presets. The CPU still matters for maintaining a playable baseline, but it is not the limiting factor in any of the tested configurations.

How This Combo Ranks

The combo of the Intel Core i5-12400 and Intel Arc B390 ranks 3289 out of 3711 tested combinations in the database. This places it in the lower percentile of all combos, roughly in the 88th percentile from the bottom. The ranking reflects the GPU's low overall performance, as the CPU alone is a mid-range part with a 72nd percentile rank among all CPUs. The GPU is the clear weak link.

To put the ranking in context, the combo is not designed for high-end gaming at 4K, but the data shows it can handle Roblox at 1080p and 1440p with ease. The ranking is based on overall performance across all games in the database, and Roblox is a relatively light title. The measured FPS in Roblox are high at 1080p, which shows that the combo is well suited for this particular game, even though it ranks low globally.

The GPU's average benchmark score of 1482 puts it within 0.1% of the NVIDIA GeForce GT 520MX, which scores 1463. The CPU's average score of 18683 puts it very close to the AMD EPYC 7643, which scores 18697, a delta of -0.1%. This means the CPU is performing at a level almost identical to a server EPYC chip in the synthetic benchmarks, but the GPU is far behind modern gaming GPUs. This combo ranking reflects the mismatch between a capable CPU and a very weak GPU.

The Verdict

Yes, this PC can run Roblox. The verdictByResolution data shows that at 1920x1080, all four presets are playable, with the best settings being Ultra at an average of 111 FPS. At 2560x1440, all four presets are also playable, with Ultra being the best at an average of 74 FPS. At 3840x2160, only the Low preset clears the 60 FPS threshold, averaging 64 FPS. The Medium preset at 4K is borderline, averaging 59 FPS, which does not meet the playable threshold of 60.

For a 1080p monitor, this system is well above the threshold for the highest quality settings. For a 1440p monitor, the system also runs the game at Ultra with room to spare. For a 4K display, the player will need to stick to the Low preset to maintain 60 FPS, or accept a lower frame rate with Medium, which averages 59 FPS and is close but not quite playable.

The data clearly shows that the game is fully playable at 1080p and 1440p with maximum settings, and playable at 4K only with reduced settings. The verdict is straightforward: for Roblox, this combo delivers a smooth experience at standard resolutions, but 4K requires a compromise in visual quality.

Similar Performance Alternatives

Looking at the CPU's nearest rivals, the Intel Core i5-12400 has an average score of 18683. The AMD EPYC 7643 is nearly identical with a score of 18697, a delta of -0.1%. The Intel Core i7-1355U scores 18730, a delta of -0.3%. The AMD Ryzen AI 5 330 scores 18811, a delta of -0.7%. Each of these CPUs would behave nearly identically in Roblox, as the game is not CPU-bound at the tested settings. The Intel Core i3-14100F scores 18519, a delta of 0.9%, which is also very close in performance.

For the GPU, the Intel Arc B390 scores 1482 in the 3DMark Steel Nomad test. The NVIDIA GeForce GT 520MX is the closest with a score of 1463, a delta of 1.3%. The NVIDIA GeForce 800M scores 1460, a delta of 1.5%. The NVIDIA GeForce GT 625 OEM scores 1446, a delta of 2.5%. The NVIDIA GeForce GT 710 scores 1443, a delta of 2.7%. These GPUs are all extremely close in synthetic performance, meaning that in Roblox, the user would see very similar frame rates if they swapped to any of these alternatives. The delta of 2.7% for the GT 710 is within the margin of error for the recorded data.

In practice, the CPU alternatives would not change the frame rate, as the GPU is the bottleneck. The GPU alternatives, being within 3% of the Arc B390, would produce nearly the same FPS in Roblox. For example, at 1440p Medium, the Arc B390 averages 104 FPS. A GPU with a 2.7% lower score might average around 101 FPS, which would still be playable. These are all low-tier parts, and the data shows that they would cluster together in performance.

Best Settings per Resolution

For 1920x1080, the most demanding preset that stays at or above 60 FPS is Ultra. The measured average FPS at Ultra is 111, which is well above the 60 FPS threshold. This is the best visual quality available at this resolution.

For 2560x1440, the highest preset that clears 60 FPS is also Ultra. The average FPS at Ultra is 74, which provides a comfortable margin above the threshold. Lower presets also work, but Ultra is the best.

For 3840x2160, the most demanding preset that stays at or above 60 FPS is Low. The average FPS at Low is 64, which is the only playable preset at this resolution. Medium falls short with an average of 59 FPS, so it is not recommended for smooth gameplay.

Measured FPS Breakdown

At 1920x1080, the recorded data shows the following results for each preset:

• Low: average 171 FPS, no min or max recorded.
• Medium: average 155 FPS, min 132 FPS, max 179 FPS.
• High: average 137 FPS, no min or max recorded.
• Ultra: average 111 FPS, no min or max recorded.

At 2560x1440, the results are:

• Low: average 114 FPS, no min or max recorded.
• Medium: average 104 FPS, min 88 FPS, max 119 FPS.
• High: average 92 FPS, no min or max recorded.
• Ultra: average 74 FPS, no min or max recorded.

At 3840x2160, the results are:

• Low: average 64 FPS, no min or max recorded.
• Medium: average 59 FPS, min 50 FPS, max 67 FPS.
• High: average 52 FPS, no min or max recorded.
• Ultra: average 42 FPS, no min or max recorded.

The data shows a clear step-down in performance from 1080p to 1440p and again from 1440p to 4K. The Medium preset is the only one with complete min and max data, and the min FPS at 4K is 50, which is below the 60 FPS threshold, even though the average is 59. This means even Medium at 4K can have occasional dips below 60 FPS, making it less stable than the Low preset, which has no recorded min but a higher average. The 1080p Medium min of 132 FPS shows that the system never dips below the threshold at that resolution, and the 1440p Medium min of 88 FPS is also above it.