Roblox

The AMD Ryzen 5 8400F paired with the NVIDIA GeForce RTX 5080 delivers exceptionally high frame rates in Roblox across all measured settings and resolutions. The data set includes 12 measured FPS points, covering 1080p, 1440p, and 4K with Low, Medium, High, and Ultra presets. This combination ranks 96th out of 1800 combos in the game, placing it in the top 5% of tested configurations. The following analysis breaks down how the CPU and GPU contribute to these results, what the scaling behavior reveals, and which settings offer the best experience.

Resolution Scaling

The measured FPS shows a clear pattern: as resolution increases, average frame rates drop substantially. At 1080p High, the combo produces 549.6 FPS. Moving to 1440p High reduces that to 367.5 FPS, and at 4K High the average falls to 209.9 FPS. The same trend appears across all presets. For Low settings, 1080p yields 679 FPS, 1440p yields 455.4 FPS, and 4K yields 258.5 FPS. Medium settings follow with 617.7 FPS at 1080p, 410.5 FPS at 1440p, and 233.9 FPS at 4K. Ultra settings produce 441.3 FPS at 1080p, 294.2 FPS at 1440p, and 170.6 FPS at 4K.

The magnitude of the drop from 1080p to 4K is significant. For example, at High settings, the 4K result is 209.9 FPS, which is less than half of the 1080p result of 549.6 FPS. This indicates that the GPU becomes the primary limiting factor at higher resolutions. At 1080p, the frame rates are so high that the CPU's performance likely caps the output, since even the most demanding preset (Ultra) still exceeds 440 FPS. The scaling behavior suggests that the RTX 5080 has ample headroom at 1080p, but the GPU's workload increases enough at 4K to bring the average down to a still-very-playable 170–258 FPS depending on the preset.

GPU Role

The RTX 5080 is a high-end graphics card with 16 GB of GDDR7 memory on a 256-bit bus, delivering a bandwidth of 960.0 GB/s. Its base clock is 2295 MHz and boost clock is 2617 MHz. The GPU's benchmark scores reflect its strong position: it achieves a Passmark G3D score of 36565 and a Geekbench OpenCL score of 264461, placing it in the 89th percentile of all GPUs. Its average benchmark score is 59188, with nearest rivals including the Intel Arc A570M (58239, 1.6% lower) and the Intel Arc Pro A60 (60326, 1.9% higher). These numbers confirm that the RTX 5080 is a top-tier part, and the Roblox results align with that standing.

The 16 GB VRAM is more than sufficient for Roblox, which is a sandbox game with relatively modest texture requirements. The high memory bandwidth (960.0 GB/s) ensures that even at 4K Ultra, the GPU can feed the render pipeline without bottlenecking. The measured FPS at 4K Ultra is 170.6, which is well above typical display refresh rates. The GPU's performance in Roblox is consistent with its overall benchmark profile: it delivers high frame rates at all resolutions, with the expected drop as pixel count increases.

Settings Recommendations

The measured data provides a clear picture of how each preset affects performance. At 1080p, Low yields the highest average FPS at 679, followed by Medium at 617.7, High at 549.6, and Ultra at 441.3. At 1440p, the order is the same: Low 455.4, Medium 410.5, High 367.5, Ultra 294.2. At 4K, Low produces 258.5 FPS, Medium 233.9, High 209.9, and Ultra 170.6.

For players who prioritize maximum frame rate, Low is the best choice at any resolution, but the differences are relatively small at 1080p. The gap between Low and Ultra at 1080p is 237.7 FPS (679 vs 441.3), which is noticeable but still leaves Ultra well above 400 FPS. At 4K, even Ultra maintains 170.6 FPS, which is smooth for most displays. Given that Roblox is a visually simple game, the Ultra preset offers the best visual quality without sacrificing playability. The data suggests that Ultra is a viable option at all three resolutions, and for users with high-refresh-rate monitors, Medium or High provide a good balance between visual fidelity and frame rate. The measured rows indicate that the RTX 5080 can handle Ultra at 4K with an average of 170.6 FPS, so there is no need to drop below High for competitive play.

FAQ

Q: What is the average FPS at 4K Ultra with this CPU and GPU?

A: The measured average FPS at 3840x2160 with Ultra settings is 170.6.

Q: How does the CPU's single-thread performance compare to its multi-thread performance?

A: The Ryzen 5 8400F scores 951 in the 3DMark single-thread test and 6165 in the max-thread test, indicating strong single-thread capability relative to its multi-thread score.

Q: What is the GPU's memory size and bandwidth?

A: The RTX 5080 has 16 GB of GDDR7 memory on a 256-bit bus, with a bandwidth of 960.0 GB/s.

Q: Which preset gives the highest FPS at 1440p?

A: Low settings produce the highest average FPS at 2560x1440, with 455.4 FPS.

Q: What is the CPU's boost clock?

A: The Ryzen 5 8400F has a boost clock of 4.70 GHz.

Q: How does the GPU's benchmark score compare to its nearest rival?

A: The RTX 5080's average benchmark score is 59188, which is 1.6% higher than the Intel Arc A570M's score of 58239.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture, with a base clock of 4.20 GHz and a boost clock of 4.70 GHz. It has a TDP of 65 W and supports DDR5 memory. Its benchmark scores show a balanced profile: the 3DMark single-thread score is 951, while the max-thread score is 6165. In Cinebench R23, it scores 20851 multi-core and 2943 single-core. The CPU's average benchmark score is 25064, placing it in the 82nd percentile of all CPUs. Its nearest rivals include the AMD Ryzen 7 2700X (25057, 0% difference) and the AMD Ryzen 5 7500F (24993, 0.3% higher).

In Roblox, the CPU's role is most evident at lower resolutions. At 1080p, the frame rates are extremely high—even Ultra exceeds 440 FPS—which suggests that the CPU is capable of feeding the GPU without becoming a bottleneck. The 6-core, 12-thread configuration is more than adequate for a game like Roblox, which is not heavily multi-threaded. The high single-thread score (951 in 3DMark) indicates that the CPU can handle the game's primary logic and physics tasks efficiently. The measured FPS at 1080p Low (679) and Medium (617.7) are likely limited by the CPU's maximum throughput, as the GPU has plenty of headroom at that resolution. At 4K, the CPU's influence diminishes, and the GPU becomes the limiting factor, as shown by the larger FPS drops.

Measured FPS Breakdown

The following table lists all measured average FPS values for the Ryzen 5 8400F + RTX 5080 combination in Roblox.

| Resolution | Settings | Avg FPS |

|------------|----------|---------|

| 3840x2160 | High | 209.9 |

| 3840x2160 | Low | 258.5 |

| 3840x2160 | Medium | 233.9 |

| 3840x2160 | Ultra | 170.6 |

| 2560x1440 | High | 367.5 |

| 2560x1440 | Low | 455.4 |

| 2560x1440 | Medium | 410.5 |

| 2560x1440 | Ultra | 294.2 |

| 1920x1080 | High | 549.6 |

| 1920x1080 | Low | 679 |

| 1920x1080 | Medium | 617.7 |

| 1920x1080 | Ultra | 441.3 |

These numbers confirm that the combo delivers playable frame rates at every resolution and preset, with the lowest measured average being 170.6 FPS at 4K Ultra. The data also shows a consistent ordering: Low > Medium > High > Ultra at each resolution, and 1080p > 1440p > 4K for each preset. The RTX 5080's 16 GB VRAM and 960.0 GB/s bandwidth, combined with the Ryzen 5 8400F's strong single-thread performance, make this an excellent pairing for Roblox. The CPU's launch MSRP is $170, and the GPU's launch MSRP is 999 USD, but the measured performance speaks for itself.