Roblox

FAQ

Q: Can the Intel Core i5-9400 and NVIDIA GeForce RTX 4080 combination run Roblox at 60 FPS?

A: Yes, at every resolution and preset tested. The database shows all settings at 1080p, 1440p, and 4K produce average frame rates well above the 60 FPS playable threshold.

Q: What is the best settings preset at 4K resolution?

A: Ultra settings deliver an average of 158 FPS at 3840x2160, making it the most demanding preset that stays above 60 FPS. The database confirms all four presets at 4K are playable.

Q: How does the RTX 4080 compare to its nearest rival, the RTX 4080 SUPER?

A: The RTX 4080 has an average benchmark score of 54,247, which is 0.1% lower than the RTX 4080 SUPER at 54,209. The performance difference is negligible in synthetic tests.

Q: What is the frame rate difference between Low and Ultra settings at 1440p?

A: Low settings average 429 FPS, while Ultra settings drop to 280 FPS. That represents a 149 FPS reduction, or about 35% lower performance when moving from the lightest to the heaviest preset.

Q: How does the i5-9400 compare to the AMD Ryzen 5 PRO 1500 in CPU benchmarks?

A: The i5-9400 has an average benchmark score of 2,254, which is 0.4% higher than the Ryzen 5 PRO 1500 at 2,246. The two processors are effectively tied in overall CPU performance.

Q: What is the strongest preset at 1080p in terms of visual quality while maintaining high FPS?

A: Ultra settings at 1920x1080 produce an average of 420 FPS. This is the most demanding preset and still delivers over 400 FPS, leaving substantial headroom above the 60 FPS threshold.

Best Settings per Resolution

The data indicates that Roblox is not a demanding title for this hardware combination. At every resolution, the most visually demanding preset (Ultra) remains far above the 60 FPS playable threshold.

At 1920x1080, Ultra settings yield an average of 420 FPS. The scaling from Medium to Ultra is notable: Medium produces 536 FPS, while Ultra drops to 420 FPS. Even the heaviest preset leaves enormous performance headroom, making Ultra the clear choice for 1080p users who want maximum visual fidelity without sacrificing smoothness.

Moving to 2560x1440, Ultra settings again take the top spot with an average of 280 FPS. The gap between Medium (390 FPS) and Ultra (280 FPS) is 110 FPS, but even at the lower figure, the experience is far beyond what a 60 Hz or even 144 Hz display can utilize. The minimum recorded frame rate at Medium is 332 FPS, and while the Ultra preset has no recorded minimum, the average of 280 FPS suggests consistent performance.

At 3840x2160, Ultra settings produce an average of 158 FPS. This is the lowest average across all resolutions and presets in the dataset, yet it still clears the 60 FPS threshold by a wide margin. The progression from Low (243 FPS) to Medium (221 FPS) to High (195 FPS) to Ultra (158 FPS) shows a steady decline with increasing visual load, but every step remains comfortably playable.

For users prioritizing maximum frame rates over visual quality, Low settings at 1080p deliver 554 FPS, at 1440p deliver 429 FPS, and at 4K deliver 243 FPS. However, given that Ultra settings never fall below 158 FPS, there is little reason to compromise on visuals with this hardware.

CPU and GPU Roles

The benchmark results reveal that Roblox is heavily GPU-bound at lower resolutions, with the CPU becoming relatively more important as resolution increases. This is evident from the scaling patterns across the three resolutions.

At 1920x1080, the difference between Low and Ultra settings is 134 FPS (554 to 420). At 2560x1440, the same comparison shows a 149 FPS gap (429 to 280). At 3840x2160, the gap narrows to 85 FPS (243 to 158). The shrinking delta at 4K suggests that the GPU is becoming the limiting factor, while at lower resolutions the CPU is able to feed frames quickly enough for the GPU to stretch its legs.

The CPU, an Intel Core i5-9400 with 6 cores and 6 threads, posts a Cinebench R23 multi-core score of 6,629 and a single-core score of 935. Its Geekbench scores are 5,141 multi-core and 1,389 single-core. These are modest figures by modern standards, but Roblox does not appear to stress the processor heavily. The fact that 1080p Low settings reach 554 FPS indicates the CPU can sustain very high frame rates in this title.

The GPU, an NVIDIA GeForce RTX 4080 with 9,728 shading units and 76 RT cores, is an extremely powerful card. Its PassMark G3D score of 34,457 places it in the 86th percentile of all GPUs. At 4K Ultra, the combination still manages 158 FPS, which shows the GPU is not being pushed to its limits even at the highest resolution and preset.

At 1080p, the CPU likely becomes the primary constraint, as frame rates above 500 FPS are uncommon even for top-tier processors. At 1440p, the balance shifts slightly toward the GPU, but the RTX 4080 still has ample headroom. At 4K, the GPU workload increases substantially, yet the frame rates remain high enough that neither component appears to be a bottleneck in a meaningful way.

The recorded data shows that Ultra presets at 4K produce 158 FPS, which is 98 FPS above the playable threshold. This suggests that even if future updates increase the graphical demands of Roblox, this combination has significant performance reserves.

The Verdict

This PC configuration can absolutely run Roblox, and it does so with exceptional performance at every resolution and preset combination tested. The verdict from the database is clear: all playable settings are available at all three resolutions.

At 3840x2160, Ultra settings deliver an average of 158 FPS. The full range of presets, from Low at 243 FPS to High at 195 FPS, all clear the 60 FPS threshold with room to spare. The best settings at 4K are Ultra, and the recorded average of 158 FPS means users can enjoy maximum visual quality on a 4K display without any concerns about smoothness.

At 2560x1440, Ultra settings produce 280 FPS, which is more than four times the playable threshold. Even the most demanding preset leaves substantial headroom for high refresh rate monitors. The database recommends Ultra as the best settings, and the 280 FPS average confirms this is the right choice.

At 1920x1080, Ultra settings reach 420 FPS. This is the highest average for a maximum preset across all resolutions in the dataset. For competitive or fast-paced gameplay, this level of performance is more than sufficient, and users with 240 Hz or even 360 Hz displays can take full advantage of the hardware.

The playable threshold is 60 FPS, and this combination exceeds it by a factor of at least 2.6 at 4K Ultra (158 FPS), 4.7 at 1440p Ultra (280 FPS), and 7.0 at 1080p Ultra (420 FPS). There is no scenario in the recorded data where this system falls below 60 FPS, making it a definitive yes for running Roblox at any settings.

Similar Performance Alternatives

The CPU and GPU each have nearby rivals in the database that would produce similar results in Roblox.

For the Intel Core i5-9400, the nearest rival is the Intel Core i7-1068NG7, which has an average benchmark score of 2,259, just 0.2% higher than the i5-9400's 2,254. The Intel Core i3-10305 scores 2,264, which is 0.4% higher. On the other side, the Intel Core i7-10710U scores 2,248, 0.3% lower, and the AMD Ryzen 5 PRO 1500 scores 2,246, 0.4% lower. All four alternatives are within a fraction of a percent of the i5-9400, meaning any of them would perform nearly identically in Roblox, where the CPU is not a limiting factor.

For the NVIDIA GeForce RTX 4080, the closest match is the RTX 4080 SUPER with a score of 54,209, just 0.1% lower than the RTX 4080's 54,247. The AMD Radeon Pro W5700X scores 54,828, which is 1.1% higher. The AMD Radeon RX 6750 GRE 12 GB scores 55,698, 2.6% higher, and the AMD Radeon 8060S scores 55,757, 2.7% higher. These deltas are small enough that all of these GPUs would deliver essentially the same experience in Roblox, with frame rates likely differing by only a few percent.

The RTX 4080 sits in the 86th percentile of all GPUs, and its rivals listed here occupy a similar performance band. For a game as undemanding as Roblox, the specific choice among these GPUs would not meaningfully change the outcome: all would produce frame rates far above 60 FPS at any resolution and preset.

How This Combo Ranks

In the database of tested combinations, this pairing of Intel Core i5-9400 and NVIDIA GeForce RTX 4080 ranks 372nd out of 3,711 total combinations. This places it in the top 10% of all tested configurations, which is consistent with the high frame rates observed in Roblox.

The ranking reflects the strength of the GPU more than the CPU. The RTX 4080 is a top-tier graphics card by any measure, with an average benchmark score of 54,247 and a percentile ranking of 86. The i5-9400, by contrast, sits at the 47th percentile of all CPUs with an average score of 2,254. The combination of a strong GPU with a mid-range CPU is well suited to Roblox, which appears to rely more on graphics processing than on multi-core CPU throughput.

The rank of 372 out of 3,711 means there are 371 combinations that score higher in this game, but the practical difference is minimal given the performance levels involved. At 1080p Ultra, this combo produces 420 FPS, and at 4K Ultra it produces 158 FPS. Even if higher-ranked combinations deliver slightly more frames, the experience at these levels is already beyond what most displays can show.

The data confirms that this is a well-balanced setup for Roblox specifically, even if the CPU would be a limiting factor in more demanding titles. For this game, the combination of the i5-9400 and RTX 4080 delivers exceptional performance across all resolutions and presets, with no configuration falling below the 60 FPS playable threshold.