Roblox

Roblox is a sandbox title that rarely pushes high-end hardware to its limits, but the combination of an Intel Core i5-10400F and an NVIDIA GeForce RTX 5090 produces a striking result: at 1080p High settings, the measured average of 539 FPS is almost certainly beyond what any display can show, while even the most demanding tested preset—4K Ultra—still holds a 179 FPS average. The data shows a system that is heavily GPU-bound at lower resolutions, yet the RTX 5090’s raw throughput is so immense that the CPU’s 6-core, 12-thread configuration becomes the primary limiter only when frame rates climb past the 500 FPS mark. This pairing ranks 181st out of 3711 tested combos for Roblox, placing it in the top 5% of all configurations, though the ranking reflects the CPU’s mid-pack standing as much as the GPU’s dominance.

FAQ

Q: What is the highest average FPS recorded for this combo in Roblox?

A: The highest measured average is 581 FPS, achieved at 1920x1080 resolution with Low settings. The next closest is 563 FPS at 1080p Medium, followed by 539 FPS at 1080p High, showing that at 1080p, settings changes cost only a modest number of frames.

Q: How does the RTX 5090’s performance compare to its nearest rivals?

A: The RTX 5090 has an average benchmark score of 79842, which is 0.3% higher than the NVIDIA Tesla P100 PCIe 16 GB (79605) and 1.1% higher than the AMD Radeon RX 6850M XT (78940). It trails the AMD Radeon Pro Vega 64X by 1.4%, as that card scores 80959.

Q: Is the Intel Core i5-10400F a bottleneck for the RTX 5090 in Roblox?

A: The evidence suggests a partial bottleneck at lower resolutions. At 1080p Low, the average is 581 FPS, while at 1440p Low it drops to 486 FPS, and at 4K Low it falls to 275 FPS. The relatively small gap between 1080p and 1440p Low (581 vs 486 FPS) indicates that the CPU’s single-thread performance—evidenced by a 3dmark single-thread score of 688—limits frame rates before the GPU is fully taxed.

Q: What is the combo’s rank among all tested combinations for Roblox?

A: The combo ranks 181st out of 3711 tested combinations, placing it in the top 4.9% of all configurations. This is a strong result, though the rank is influenced by the CPU’s 68th percentile standing among all CPUs, while the GPU sits in the 92nd percentile among all GPUs.

Q: Which settings preset provides the best balance of high FPS and visual quality at 1080p?

A: At 1920x1080, the High preset delivers 539 FPS average, which is only 24 FPS lower than the Low preset’s 581 FPS but substantially better than the Ultra preset’s 475 FPS. The Medium preset’s 563 FPS average is the closest to Low, but High offers a 24 FPS gain over Ultra while remaining within 42 FPS of the maximum, making it the practical choice.

Q: Does the RTX 5090’s 32 GB of VRAM matter for Roblox?

A: The game is a sandbox with relatively modest graphics demands, and the measured FPS data shows no signs of VRAM limitation. The 32 GB GDDR7 memory with 1.79 TB/s bandwidth is far beyond what Roblox requires, so the resource goes unused in this title, though it does not hurt performance.

CPU Role

The Intel Core i5-10400F is a 6-core, 12-thread processor from the Comet Lake architecture, built on Intel’s 14 nm process. It has a base clock of 2.90 GHz and a boost clock of 4.30 GHz, with 12 MB of shared L3 cache. In Roblox, the game’s physics and logic often rely on a few fast cores rather than many slow ones, and this CPU’s single-thread performance is respectable: it scores 688 in 3dmark single-thread, 146 in Cinebench R15 single-core, and 609 in Cinebench R20 single-core. For a game that frequently runs at hundreds of frames per second, that single-thread capability is the defining factor.

The multi-threaded scores tell a different story. The i5-10400F scores 4748 in 3dmark 16-thread, 4318 in Cinebench R20 multicore, and 10283 in Cinebench R23 multicore. These numbers place it at the 68th percentile among all CPUs, meaning it is a mid-pack processor for heavily threaded workloads. In Roblox, however, the game rarely uses all 12 threads effectively, so the multi-thread scores matter less than the single-thread figures. The passmark single-thread score of 2541 and the passmark multithread score of 12115 further illustrate this: the CPU is about 4.8 times faster in multi-thread workloads, but Roblox’s frame rate is not scaling with that.

Looking at the measured FPS data, the CPU’s role becomes clear. At 1080p Low, the average is 581 FPS, but at 1440p Low, it drops to 486 FPS—a 16% decrease. If the GPU were the sole limiter, the drop would be much larger given the 2.25x increase in pixel count. The modest drop suggests that at 1080p, the CPU is nearing its ceiling, and at 1440p, the GPU begins to take over. At 4K Low, the average plummets to 275 FPS, showing that the RTX 5090 is now the bottleneck. The CPU’s boost clock of 4.30 GHz is what allows it to sustain these high frame rates, but the 14 nm process and 65W TDP limit how far it can push.

The nearest rivals for the i5-10400F, based on average benchmark score, are the Intel Xeon 6756E (14163, 0.2% lower), Intel Core 7 160UL (14232, 0.3% higher), AMD EPYC 7552 (14115, 0.5% lower), and AMD Ryzen 3 7320C (14277, 0.6% higher). These comparisons show that the i5-10400F is competitive with a range of server and mobile chips in synthetic benchmarks, but those rivals lack the same single-thread boost clock or are designed for different power envelopes. In Roblox, the i5-10400F’s 4.30 GHz boost is the key asset, as it keeps frame rates high even when the GPU is not fully utilized.

Settings Recommendations

The measured FPS data provides a clear picture of how settings affect performance across three resolutions. At 1920x1080, the Low preset yields 581 FPS, Medium 563 FPS, High 539 FPS, and Ultra 475 FPS. The difference between Low and High is only 42 FPS (7%), while the jump from High to Ultra costs 64 FPS (12%). For a game that already runs at over 500 FPS, the High preset is the sensible recommendation: it delivers 539 FPS, which is far above any display refresh rate, while offering better visuals than Low or Medium. Ultra, at 475 FPS, is still extremely fast but sacrifices 64 FPS for marginal visual gains.

At 2560x1440, the pattern shifts. Low produces 486 FPS, Medium 442 FPS, High 391 FPS, and Ultra 317 FPS. The gap between Low and High is 95 FPS (20%), and High to Ultra costs 74 FPS (19%). Here, High remains the best choice for most users, as 391 FPS is still far beyond what any monitor can show. However, if a user has a 360Hz display, Medium at 442 FPS or even Low at 486 FPS would be necessary to fully utilize it. Ultra at 317 FPS is still smooth but represents a 36% drop from Low, making it less appealing unless visual fidelity is the priority.

At 3840x2160, the RTX 5090 finally faces a real load. Low yields 275 FPS, Medium 250 FPS, High 221 FPS, and Ultra 179 FPS. The Medium preset has measured minimum and maximum values of 212 and 287 FPS, respectively, indicating a stable range. High at 221 FPS is the sweet spot for 4K: it is 54 FPS faster than Ultra but only 29 FPS slower than Medium. For users with a 120Hz or 144Hz 4K display, High provides a comfortable margin above the refresh rate. Ultra, at 179 FPS, is still playable and would satisfy a 165Hz monitor, but the 42 FPS penalty over High is steep for a sandbox game.

The overall recommendation is to use High settings at any resolution. At 1080p, it costs only 7% of the maximum FPS while providing substantially better visuals than Low. At 1440p, it remains above 390 FPS, which is more than adequate. At 4K, it holds 221 FPS, which is fast enough for any current display. The only scenario where a different preset makes sense is a competitive player with a 500Hz monitor at 1080p, where Low’s 581 FPS would be the only way to approach the display’s limit.

How This Combo Ranks

The combination of the Intel Core i5-10400F and NVIDIA GeForce RTX 5090 ranks 181st out of 3711 tested combinations for Roblox. This places it in the top 4.9% of all configurations, which is a strong result given that the CPU is not a high-end part. The rank is driven primarily by the GPU, which sits in the 92nd percentile among all GPUs, while the CPU is in the 68th percentile. The disparity between the two components is reflected in the FPS data: at 1080p, the CPU limits performance, but at 4K, the GPU’s power shines through.

Compared to other combos, this pairing is unusual because the RTX 5090 is a flagship GPU that is typically paired with a top-tier CPU. The i5-10400F’s mid-pack standing means that in CPU-bound scenarios, it will hold back the GPU. However, Roblox is not a demanding title, and the measured FPS shows that even at 4K Ultra, the combo maintains 179 FPS. The rank of 181 suggests that there are 180 combos that perform better, likely those with faster CPUs like the Core i9 or Ryzen 9 series, which can push frame rates even higher at 1080p.

The GPU’s nearest rivals, based on benchmark scores, include the NVIDIA Tesla P100 PCIe 16 GB (0.3% lower), NVIDIA Tesla P100 PCIe 12 GB (0.6% lower), AMD Radeon RX 6850M XT (1.1% lower), and AMD Radeon Pro Vega 64X (1.4% higher). These comparisons show that the RTX 5090 is marginally faster than a datacenter GPU from several generations ago, but the real advantage is its 32 GB of GDDR7 memory and 1.79 TB/s bandwidth, which are irrelevant for Roblox. The combo’s rank is therefore more a measure of the CPU’s limitations than the GPU’s capabilities.

In practical terms, a rank of 181 out of 3711 means that this system is faster than 95.1% of all tested combinations in Roblox. The only combos that beat it are those with higher-end CPUs, and the margin is likely small—at 1080p, a faster CPU might add 50-100 FPS, but at 4K, the difference would be negligible. For a sandbox game that does not require high-end hardware, this rank is more than sufficient for a smooth experience.

GPU Role

The NVIDIA GeForce RTX 5090 is a Blackwell 2.0 architecture GPU built on TSMC’s 5 nm process, with 92,200 million transistors on a 750 mm² die. It has a base clock of 2017 MHz and a boost clock of 2407 MHz, with 21760 shading units, 680 TMUs, and 176 ROPs. The memory subsystem is 32 GB of GDDR7 on a 512-bit bus, providing 1.79 TB/s of bandwidth. In Roblox, these specifications are overkill: the game’s graphics are simple enough that even a mid-range GPU could run it at high frame rates.

The measured FPS data shows how the GPU’s role changes with resolution. At 1080p, the RTX 5090 is barely taxed, as evidenced by the 581 FPS average at Low settings. The GPU’s pixel rate of 423.6 GPixel/s and texture rate of 1,636.8 GTexel/s are far beyond what Roblox requires at that resolution. At 1440p, the GPU starts to work harder, but the 486 FPS average at Low still leaves headroom. At 4K, the GPU finally becomes the primary bottleneck, with the 275 FPS average at Low showing that the RTX 5090’s raw compute is being utilized.

The GPU’s benchmark scores reinforce its dominance. It scores 18355 in 3dmark Steel Nomad DX12, 334370 in Geekbench OpenCL, and 376728 in Geekbench Vulkan. The passmark G3D score is 39650, and the G2D score is 1413. These numbers place it in the 92nd percentile among all GPUs, which is expected for a flagship. The nearest rivals—Tesla P100 variants and Radeon Pro cards—are not gaming GPUs, but the comparison shows that the RTX 5090 is only 0.3% to 1.1% faster than a several-year-old datacenter accelerator, highlighting that raw benchmark scores do not always translate to gaming performance.

In Roblox, the GPU’s 32 GB of VRAM is completely unused, as the game’s textures and geometry can fit in a fraction of that memory. The 512-bit memory bus and 1.79 TB/s bandwidth are similarly unnecessary, but they do not hurt. The GPU’s boost clock of 2407 MHz is what allows it to maintain high frame rates at 4K, where the 179 FPS average at Ultra is still fast enough for most displays. The FP32 performance of 104.8 TFLOPS is more than the game can use, but it means that the GPU will never be the limiting factor except at the highest resolutions and settings.

Measured FPS Breakdown

At 3840x2160, the measured average FPS values are: Low 275, Medium 250, High 221, and Ultra 179. The Medium preset has a measured minimum of 212 FPS and a maximum of 287 FPS, showing a variance of 75 FPS. The other presets do not have min/max data, but the averages indicate a consistent decline from Low to Ultra: a 25 FPS drop from Low to Medium, a 29 FPS drop from Medium to High, and a 42 FPS drop from High to Ultra. This means that at 4K, switching from Low to Ultra costs 96 FPS (35% of the Low score).

At 2560x1440, the averages are: Low 486, Medium 442, High 391, and Ultra 317. The Medium preset’s min/max are 376 and 508 FPS, respectively, a spread of 132 FPS. The drop from Low to Medium is 44 FPS, Medium to High is 51 FPS, and High to Ultra is 74 FPS. The total cost from Low to Ultra is 169 FPS (35% of Low). Notably, the 1440p Medium min of 376 FPS is higher than the 4K Low average of 275 FPS, showing that resolution has a larger impact than settings at these extremes.

At 1920x1080, the averages are: Low 581, Medium 563, High 539, and Ultra 475. The Medium preset has a min of 478 FPS and a max of 647 FPS, a range of 169 FPS. The differences are: 18 FPS from Low to Medium, 24 FPS from Medium to High, and 64 FPS from High to Ultra. The total cost from Low to Ultra is 106 FPS (18% of Low). This shows that at 1080p, the CPU is the limiting factor, as the GPU can easily handle all presets, and the frame rate differences are smaller than at higher resolutions.

Comparing across resolutions, the 1080p Low average of 581 FPS is 19.5% higher than 1440p Low’s 486 FPS, which is 76.7% higher than 4K Low’s 275 FPS. The 1080p Ultra average of 475 FPS is 49.8% higher than 1440p Ultra’s 317 FPS, which is 77.1% higher than 4K Ultra’s 179 FPS. These ratios show that the GPU scales predictably with pixel count, but the CPU’s impact is most visible at 1080p, where the gap between Low and Ultra is only 106 FPS compared to 169 FPS at 1440p and 96 FPS at 4K. The measured data confirms that this combo is capable of running Roblox at any setting and resolution with frame rates that far exceed standard display refresh rates.