Roblox

The AMD Ryzen 5 8400F paired with the Intel Arc B370 is a combination that lands near the very bottom of the performance hierarchy for Roblox, ranking 2774th out of 3010 tested combinations. The data shows a system that is unconditionally GPU-bound, where the Arc B370’s position in the 5th percentile of all GPUs is the primary bottleneck, while the Ryzen 5 8400F’s strong multi-threaded scores are largely irrelevant to the final frame rates. The measured FPS, which ranges from 38 at 4K Ultra to 154 at 1080p Low, indicates that playable performance is only achievable at lower resolutions and settings, with the system struggling to maintain a smooth experience at higher visual fidelity.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals a stark and consistent drop-off that is characteristic of a GPU-limited scenario. At High settings, the average FPS falls from 124 at 1920x1080 to 83 at 2560x1440, a reduction of 41 FPS, and then plummets further to 47 at 3840x2160, a 77 FPS drop from the 1080p baseline. This pattern of steep decline with each resolution increase is a clear indicator that the Intel Arc B370, with its low pixel rate of 48.00 GPixel/s and 6.144 TFLOPS of FP32 performance, is the component determining the system's limits. The data suggests that as the rendering load increases with pixel count, the GPU is quickly saturated, and the CPU's potential is left untapped.

The gap between Low and Ultra settings also widens as resolution increases, which is a further sign of GPU strain. At 1080p, the difference between Low (154 FPS) and Ultra (101 FPS) is 53 FPS. At 1440p, this gap narrows to 36 FPS (103 FPS Low vs. 67 FPS Ultra), and at 4K, it shrinks to just 20 FPS (58 FPS Low vs. 38 FPS Ultra). This convergence at higher resolutions indicates that the GPU is so heavily burdened by the pixel count that the additional workload from higher graphical settings has a diminishing absolute impact on frame rate. The system is essentially hitting a hard performance ceiling at 4K, where even lowering settings from Ultra to Low only yields a 20 FPS improvement.

The scaling pattern also suggests that the Ryzen 5 8400F is not a contributing factor to the performance drop. If the CPU were the limiting component, the frame rates would remain more stable across resolutions, as the CPU's workload (draw calls, game logic) does not scale with pixel count in the same way as the GPU's. The fact that FPS drops by more than half when moving from 1080p to 4K confirms that the Arc B370 is the sole constraint. The benchmark results indicate that for users aiming for high refresh rate monitors, the 4K resolution is effectively out of reach for this combination, and even 1440p presents a significant challenge to maintain high frame rates.

GPU Role

The Intel Arc B370 is the decisive factor in this system's Roblox performance, and its specifications paint a clear picture of a low-end integrated-class part. The GPU's percentile rank of 5th among all GPUs is a stark indicator of its position in the market, and its benchmark score of 1184 in 3DMark Steel Nomad DX12 places it in direct competition with much older hardware like the ATI Radeon HD 5770, which scores 1190, a delta of -0.5%. This comparison to a GPU from over a decade ago underscores the Arc B370's limited rendering power. Its nearest rival, the ATI Mobility Radeon HD 5570, scores 1186, a delta of -0.2%, further cementing its legacy-tier performance level.

The GPU's memory architecture is "System Shared," meaning it relies on the system's main memory rather than dedicated VRAM. While this can be a cost-effective solution, its bandwidth is listed as "System Dependent," which introduces a potential performance variable. The lack of dedicated VRAM means that texture loading and frame buffering are subject to the speed of the system's DDR5 memory, which is dual-channel with a bandwidth of 83.2 GB/s. In a game like Roblox, which can have complex user-generated environments, this shared memory setup can lead to stuttering or reduced performance if the system memory bandwidth becomes a secondary bottleneck, though the data suggests the GPU's processing power is the primary constraint.

The clock speeds of the Arc B370 are also telling. With a base clock of 300 MHz and a boost clock of 2400 MHz, the GPU relies heavily on its boost behavior to deliver any semblance of performance. The 25 W TDP classifies it as an IGP (Integrated Graphics Processor), which explains its low power draw and the absence of power connectors. The raw compute metrics — 1280 shading units, 40 TMUs, 20 ROPs, and 10 RT cores — are all relatively low, resulting in a texture rate of 96.00 GTexel/s and a pixel rate of 48.00 GPixel/s. These figures directly correlate with the measured FPS, showing a GPU that is simply out of its depth when asked to render Roblox at high resolutions and settings.

CPU Role

The AMD Ryzen 5 8400F is a significantly more capable component than the GPU it is paired with, and its performance data shows that it has ample headroom in Roblox. The CPU's average benchmark score of 25005 places it in the 77th percentile of all CPUs, a stark contrast to the GPU's 5th percentile ranking. Its nearest rival, the AMD Ryzen 5 7500F, scores 24964, a delta of just 0.2%, indicating they are virtually tied in performance. This high level of CPU performance in a game like Roblox, which often has a single-threaded component, is more than sufficient.

The Ryzen 5 8400F's single-threaded capabilities are strong, as evidenced by its 3DMark single-thread score of 951 and its Cinebench R23 single-core score of 2943. These scores are far above the threshold needed to avoid bottlenecking a low-end GPU like the Arc B370 in a game that relies on physics and game logic. The multi-threaded performance is also excellent, with a Cinebench R23 multicore score of 20851 and a Passmark multithread score of 24389. This means that even in scenarios with many active objects or complex scripts, the CPU is unlikely to be the limiting factor. The 6-core, 12-thread configuration of the 8400F, with a boost clock of 4.70 GHz, provides more than enough processing power for Roblox's demands.

The data strongly implies that the CPU is essentially "waiting" for the GPU. The frame rates are consistently low across all settings and resolutions, and they scale directly with the GPU's workload. If the CPU were the bottleneck, we would expect to see frame rates that are more uniform across different resolutions, as the CPU's workload would be the same. Instead, the FPS drops dramatically with resolution, which is a classic sign of a GPU bottleneck. The Ryzen 5 8400F's 4 nm process and 16 MB of L3 cache are irrelevant to the final output because the GPU cannot render frames fast enough to utilize the CPU's full potential. In this pairing, the CPU's role is simply to feed the GPU with draw calls, a task it performs with significant capacity to spare.

Measured FPS Breakdown

The measured FPS data provides a definitive look at the system's capabilities across a matrix of resolutions and settings. At 1920x1080, the system delivers its best performance, but the numbers are still modest. With Low settings, the average FPS is 154, which is the highest recorded for this combination. Moving up to Medium settings yields an average of 140 FPS, with a minimum of 119 and a maximum of 161. High settings reduce the average to 124 FPS, and Ultra settings bring it down to 101 FPS. These figures indicate that 1080p is the only resolution where the system can consistently hit high refresh rates, but only at lower settings.

At 2560x1440, the performance drops significantly across the board. The Low setting average is 103 FPS, which is a 51 FPS drop from 1080p Low. Medium settings average 94 FPS (min 80, max 108), High settings average 83 FPS, and Ultra settings average just 67 FPS. The data shows that 1440p is a challenging resolution for this combo, with even Low settings failing to maintain a stable 100+ FPS in all scenarios. For a smooth competitive experience, users would need to stick to 1080p.

The 3840x2160 results are the most telling, as they show the system's limits. Ultra settings produce a low average of 38 FPS, which is barely playable. High settings are only slightly better at 47 FPS, while Medium settings average 53 FPS (min 45, max 61). Even Low settings at 4K only manage an average of 58 FPS. These numbers confirm that 4K gaming is not a viable option for this hardware combination. The data suggests that the Arc B370's 6.144 TFLOPS of compute power and 48.00 GPixel/s pixel rate are simply insufficient to handle the 8.3 million pixels of a 4K display at acceptable frame rates.

FAQ

Q: Can this system run Roblox at 4K resolution?

A: The data shows it is not recommended. At 4K, the highest average FPS is 58 on Low settings, with Ultra settings dropping to just 38 FPS. The system is heavily GPU-limited at this resolution.

Q: What is the best resolution for this CPU/GPU combo in Roblox?

A: According to the measured FPS, 1920x1080 is the only resolution where the system can achieve high frame rates. On Low settings it averages 154 FPS, and even on High it manages 124 FPS.

Q: How does the Intel Arc B370 compare to its nearest rivals in GPU performance?

A: The Arc B370's 3DMark Steel Nomad score of 1184 is nearly identical to the ATI Mobility Radeon HD 5570 (1186, -0.2% delta) and the ATI Radeon HD 5770 (1190, -0.5% delta), placing it in the 5th percentile of all GPUs.

Q: Is the AMD Ryzen 5 8400F a bottleneck for this system in Roblox?

A: No. The CPU's performance, with an average benchmark score of 25005 and a 77th percentile ranking, is far higher than the GPU's. The frame rates drop with resolution, which is a clear sign of a GPU bottleneck, not a CPU one.

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

A: At 1920x1080, the average FPS on Low settings is 154, while on Ultra settings it is 101. This is a difference of 53 FPS.

Q: What kind of frame rate consistency does the Medium setting offer at 1440p?

A: At 2560x1440 with Medium settings, the system averages 94 FPS, with a minimum of 80 FPS and a maximum of 108 FPS, showing a 28 FPS range between the minimum and maximum.

Settings Recommendations

Based on the measured FPS data, the optimal experience for this hardware combination is at 1920x1080 resolution. The data indicates that the system is not capable of delivering a consistently high frame rate at 1440p or 4K. At 1080p, the Low setting provides the highest average frame rate at 154 FPS, which is ideal for competitive play or high refresh rate displays. However, for a more visually polished experience, the Medium setting at 1080p is a strong recommendation, as it averages 140 FPS with a minimum of 119 FPS, ensuring that the frame rate rarely drops below the 120 FPS threshold.

For users who prioritize visual quality over raw frame rate, the High setting at 1080p is the highest preset that remains comfortably playable, with an average of 124 FPS. The Ultra setting at 1080p, with an average of 101 FPS, is the limit of playability, but the 23 FPS drop from High to Ultra may not justify the visual gains. At 1440p, the data suggests that only the Low setting (103 FPS average) approaches a high refresh rate experience, while Medium (94 FPS) and High (83 FPS) are playable but may exhibit noticeable frame rate dips in demanding scenes. The 4K resolution should be avoided entirely, as no setting achieves a stable 60 FPS average.

The benchmark results lead to a clear verdict: the "Medium" preset at 1920x1080 offers the best balance of visual fidelity and performance, with frame rates averaging 140 FPS and a minimum of 119 FPS. If a higher frame rate is needed, the "Low" preset at 1080p is the only option that pushes the average past 150 FPS. The GPU's low pixel rate and compute performance make higher resolutions a poor trade-off, as the system's frame rate drops by roughly 45% when moving from 1080p to 1440p, and by another 45% when moving from 1440p to 4K.