Roblox

Roblox is a sandbox title that behaves unusually under high-end hardware, and the combination of the Intel Core i5-10400F with the NVIDIA GeForce RTX 5080 produces a dataset where frame rates are exceptionally high across all settings, yet the pattern of results reveals a distinct bottleneck hierarchy. The measured rows show that this pairing is rarely limited by the GPU, even at 4K, which makes the choice of graphics preset more about consistency than about achieving playable frame rates, since every configuration exceeds typical display refresh rates.

Settings Recommendations

The measured data shows that the Low preset delivers the highest average frame rates at every resolution, but the differences between Low and Medium are often small, suggesting that the game’s rendering pipeline is not heavily stressed by moderate increases in visual fidelity. At 1920x1080, Low produces 582.3 FPS, while Medium drops to 563.7 FPS, a reduction of about 3.2% that is unlikely to be perceptible on most monitors. At 2560x1440, Low yields 453.1 FPS and Medium 412.7 FPS, a gap of roughly 8.9%, which still leaves ample headroom for high-refresh displays. The High preset offers 536.5 FPS at 1080p and 365.9 FPS at 1440p, representing a more substantial performance cost that may be justified by visual improvements, but the Ultra preset is the outlier, dropping to 446.4 FPS at 1080p and 293.4 FPS at 1440p.

For the best experience, the data supports Medium as the optimal choice for most users, because it retains most of the performance headroom while likely providing a more visually stable scene than Low. The gap between Medium and High at 4K is notable: Medium achieves 235.8 FPS, while High falls to 206.9 FPS, a 12.3% penalty that could matter for users targeting 240 Hz displays. Ultra is not recommended at any resolution, as it consistently produces the lowest frame rates, with 168.2 FPS at 4K being the only configuration that dips below the 200 FPS threshold. Given that even Ultra at 1080p stays above 440 FPS, the recommendation is to prioritize Medium for a balance of smoothness and quality, or High if visual fidelity is paramount and the display refresh rate is 144 Hz or lower.

GPU Role

The NVIDIA GeForce RTX 5080 is a Blackwell 2.0 architecture part built on a 5 nm process at TSMC, featuring 10752 shading units and 112 ROPs. Its memory subsystem consists of 16 GB of GDDR7 on a 256-bit bus, yielding a bandwidth of 960.0 GB/s, with memory clocks rated at 1875 MHz or 30 Gbps effective. The GPU’s base clock is 2295 MHz with a boost clock of 2617 MHz, and it maintains a pixel rate of 293.1 GPixel/s alongside a texture rate of 879.3 GTexel/s. These specifications place the RTX 5080 in the 89th percentile of all GPUs, with an average benchmark score of 59188, which is 1.6% ahead of the Intel Arc A570M and 2.5% ahead of the Intel Arc A580, while trailing the Intel Arc Pro A60 by 1.9%.

In Roblox, the GPU’s role is primarily to render simple geometry and lighting, which is why the frame rates are so high even at 4K. The data indicates that the RTX 5080 is not the limiting factor in most scenarios, as the frame rate scales more strongly with resolution than with settings, suggesting that the game’s draw calls are trivial for this hardware. The VRAM capacity of 16 GB is far beyond what this title requires, and the bandwidth of 960.0 GB/s is sufficient to handle any texture streaming without stutter. The boost clock of 2617 MHz ensures that the GPU can quickly process the low-complexity shaders typical of sandbox games, and the measured FPS at 4K Low (259.1 FPS) versus 4K Ultra (168.2 FPS) shows that the GPU is still responsive to settings changes, but the absolute numbers are so high that the CPU becomes the primary governor of performance.

How This Combo Ranks

This specific pairing of the Intel Core i5-10400F and the NVIDIA GeForce RTX 5080 achieves a combo rank of 115 out of 1800 tested combinations in Roblox, placing it in the top 6.4% of all systems. The rank reflects the balance between the CPU’s 73rd percentile standing (average benchmark score of 14168) and the GPU’s 89th percentile performance, but the game’s results indicate that the CPU is the weaker link. The i5-10400F’s average score is 0.4% above the AMD EPYC 7552, 0.8% below the AMD Ryzen 3 7320C, and 1.1% below the Intel Core i5-8500, showing that it sits in a tight cluster of mid-range processors. The RTX 5080, by comparison, is clearly a top-tier part, and the combo’s rank of 115 suggests that the CPU drags the overall result down from what the GPU alone could achieve.

The data shows that this combo is well above the median system, but the gap between the GPU’s percentile (89) and the CPU’s percentile (73) is significant. In a game like Roblox where frame rates are already extremely high, the combo rank is more about consistency than raw capability, and the fact that it lands at 115 out of 1800 indicates that many systems with faster CPUs achieve higher marks. The measured FPS values are all above 168 FPS, meaning the combo never struggles to maintain smooth gameplay, but the rank suggests that users with a newer or higher-clocked processor would see better scaling at lower resolutions.

Measured FPS Breakdown

At 1920x1080, the frame rates are remarkably high across all settings, with Low averaging 582.3 FPS, Medium 563.7 FPS, High 536.5 FPS, and Ultra 446.4 FPS. The spread from Low to Ultra is 135.9 FPS, a 23.3% reduction, which indicates that the settings have a moderate impact on performance even at this resolution. At 2560x1440, Low drops to 453.1 FPS, Medium to 412.7 FPS, High to 365.9 FPS, and Ultra to 293.4 FPS. The gap between Low and Ultra widens to 159.7 FPS, a 35.2% reduction, showing that the higher resolution amplifies the cost of quality settings. At 3840x2160, Low averages 259.1 FPS, Medium 235.8 FPS, High 206.9 FPS, and Ultra 168.2 FPS. The spread here is 90.9 FPS, a 35.1% reduction, which is proportionally similar to 1440p.

The data reveals that the step from Medium to High is consistently the most expensive in percentage terms. At 1080p, Medium to High costs 27.2 FPS (4.8%), while High to Ultra costs 90.1 FPS (16.8%). At 1440p, Medium to High costs 46.8 FPS (11.3%), and High to Ultra costs 72.5 FPS (19.8%). At 4K, Medium to High costs 28.9 FPS (12.3%), and High to Ultra costs 38.7 FPS (18.7%). This pattern suggests that the Ultra preset introduces effects that disproportionately tax the GPU, while Low to Medium is a minor change. The 4K Low result of 259.1 FPS is particularly telling, as it shows that the GPU can still push a high frame rate even at the most demanding resolution when the visual load is minimized.

Resolution Scaling

The transition from 1080p to 4K produces a predictable drop in frame rates, but the magnitude varies by settings. At Low, the FPS falls from 582.3 at 1080p to 259.1 at 4K, a reduction of 55.5%. At Medium, the drop is from 563.7 to 235.8, a 58.2% reduction. At High, the drop is from 536.5 to 206.9, a 61.4% reduction. At Ultra, the drop is from 446.4 to 168.2, a 62.3% reduction. These percentages show that the scaling penalty grows slightly with higher settings, but the overall pattern is consistent with a GPU that is still not fully saturated at 4K.

The fact that 4K Low (259.1 FPS) is higher than 1080p Ultra (446.4 FPS) by a margin of 42.0% indicates that the CPU is the limiting component at lower resolutions, while the GPU becomes more relevant at 4K. The scaling from 1440p to 4K is particularly steep: at High, the FPS drops from 365.9 to 206.9, a 43.5% reduction, which is close to the theoretical 2.25x pixel count increase (56.3% reduction expected if purely GPU-bound). The actual reduction is less than that, suggesting that the CPU still imposes a ceiling even at 4K. This is confirmed by the fact that 4K Low (259.1 FPS) is higher than 1440p Ultra (293.4 FPS) by only 11.7%, meaning that the CPU cannot sustain the frame rate that the GPU could theoretically deliver at 1440p Ultra.

CPU Role

The Intel Core i5-10400F is a 10th generation Comet Lake processor with 6 cores and 12 threads, running at a base clock of 2.90 GHz and a boost clock of 4.30 GHz. It has a 12 MB shared L3 cache and supports dual-channel DDR4 memory with a bandwidth of 42.7 GB/s. In synthetic benchmarks, the CPU scores 10297 in Cinebench R23 multicore and 1453 in single-core, while its Passmark multithread score is 12115 and single-thread score is 2541. These numbers place it in the 73rd percentile of all CPUs, with an average benchmark score of 14168, which is nearly identical to the AMD EPYC 7552 (0.4% higher) and the AMD Ryzen 3 7320C (0.8% lower).

In Roblox, the CPU’s role is critical because the game’s engine often relies on a single main thread for physics and scripting. The i5-10400F’s boost clock of 4.30 GHz provides decent single-thread performance, but the measured FPS at 1080p Low (582.3 FPS) versus 4K Low (259.1 FPS) shows that the CPU can only push about 582 FPS in the best case, which is far below what the RTX 5080 could theoretically render. The fact that 1080p Ultra (446.4 FPS) is lower than 1080p Low (582.3 FPS) by 23.3% indicates that the GPU is still doing enough work to lower the frame rate, but the CPU remains the primary bottleneck at all resolutions. The 6-core, 12-thread configuration is sufficient for this title, but the lack of a higher boost clock or newer architecture means that the combo’s rank of 115 out of 1800 is capped by the processor’s ability to feed the GPU with draw calls.