Roblox

The pairing of an Intel Core i5-11400F with an NVIDIA GeForce RTX 4080 produces frame rates in Roblox that range from roughly 150 to over 600 FPS depending on resolution and quality settings. The measured data covers three resolutions — 3840x2160, 2560x1440, and 1920x1080 — and four quality presets (Low, Medium, High, Ultra). The lowest recorded average is 158 FPS at 4K Ultra, while the highest is 643 FPS at 1080p Low. This combination clearly favors high refresh rate displays, but the scaling pattern across resolutions reveals an unusual balance between the CPU, the GPU, and the game engine.

Resolution Scaling

Across all four settings, the average FPS drops steeply when moving from 1080p to 1440p, and then again from 1440p to 4K. At High settings, the average FPS falls from 517 at 1080p to 345 at 1440p, and down to 195 at 2160p. A similar pattern appears on Low: 643 at 1080p, 429 at 1440p, and 243 at 2160p. Medium averages go from 585 at 1080p to 390 at 1440p, and finally 221 at 2160p, while Ultra shows 420 at 1080p, 280 at 1440p, and 158 at 2160p.

The drop between 1080p and 1440p is not uniform — High drops by 172 FPS, Low by 214 FPS, Medium by 195, and Ultra by 140. These are large absolute differences, and the relative reductions are consistent across presets. From 1440p to 4K, the drop intensifies. Ultra falls from 280 to 158 in the move to 2160p, a 122 FPS drop, while Medium goes from 390 to 221. The pattern suggests a transition point near the CPU's maximum ability to feed the GPU. At 1080p, all settings produce frame rates well above 400 FPS, so the CPU is already saturated when the GPU is at low load. When resolution rises, GPU load increases, but the game's performance scaling is still heavily influenced by the CPU at every step. The data does not reveal a full GPU-limitation regime at even 4K, because even at 2160p Ultra the system still delivers 158 FPS, which is far from a typical GPU bottleneck at that resolution.

How This Combo Ranks

The i5-11400F + RTX 4080 combination holds position 250 out of 3,711 tested combinations in Roblox. That means the combo sits above the 93rd percentile of all combos tested in this game, placing it in the top 6.7%. Given the CPU is 6 years old and the GPU is on the opposite side of the performance spectrum, this ranking suggests Roblox is not GPU-bound to a typical degree. Many higher-end components reach similar frame rates, but the role of the CPU means the GPU's extra capacity is not fully leveraged. The combo's high rank is likely driven by the GPU's raw throughput and the power of the i5-11400F at lower resolutions. At 1080p, the GPU is essentially idle, and the frame rate ceiling is set by the CPU's thread handling and memory bandwidth. The ranking indicates that even a mid-range CPU of this generation can drive the RTX 4080 to deliver robust Roblox performance.

GPU Role

The RTX 4080 boasts a base clock of 2205 MHz and a boost clock of 2505 MHz, with 16 GB of GDDR6X memory on a 256-bit bus, giving 716.8 GB/s of bandwidth. In Roblox, where the GPU is not the primary factor at most settings, this hardware remains underutilized. The measured FPS at 1080p Ultra (420) is only ~65% of the GPU's potential at 1080p Low (643 FPS), indicating that the game does not demand the full shading throughput. The GPU's 76 RT cores and 304 tensor cores are active in other workloads, but Roblox is a rasterization-heavy title. The 16 GB frame buffer might be a factor at 4K Ultra, but the measured 158 FPS at 2160p Ultra shows the GPU can handle max settings without dropping below 60 FPS. The GPU's internal controllers also play a small role: the minimum and maximum FPS recorded at 1080p Medium are 497 and 673, while at 2160p Medium are 188 and 254. These boundaries show that even when the CPU is the primary bottleneck, the GPU's output is stable within a range of roughly 100–250 FPS.

In terms of the GPU's standing among tested parts, it sits at the 86th percentile of all GPUs. Its average benchmark score is 54,247, and it essentially ties with the RTX 4080 SUPER (delta +0.1%) and is only 1.1% behind the AMD Radeon Pro W5700X. This GPU is not the cause of any observed limitation in Roblox; it is the ceiling, not the floor.

Measured FPS Breakdown

The data contains 12 measured combinations. At 1920x1080, the averages are: Low 643, Medium 585 (with a minimum of 497 and a maximum of 673), High 517, Ultra 420. The spread from Low to Ultra is 223 FPS, which is over a 50% advantage for the Low preset. At 2560x1440, the corresponding averages are: Low 429, Medium 390 (min 379? No, the table shows min 332, max 449), High 345, Ultra 280. The Low to Ultra spread is 149 FPS. At 3840x2160, the averages are: Low 243, Medium 221 (min 188, max 210), High 195, Ultra 158. The spread from Low to Ultra is 85 FPS.

The Medium preset at all three resolutions shows a consistent pattern: at 1080p Medium, the average is 585; at 1440p, 390; and at 4K, 221. The minimum FPS captured at Medium settings scales from 497 to 332 to 188. The maximums also scale: 673, 449, and 254. These numbers indicate a linear scaling of about 0.5x average FPS for each resolution step, though the exact ratios are 0.66 (585 to 390) and 0.56 (390 to 221). No explicit formula is apparent; the game's simple geometry may cause different costs per pixel.

Settings Recommendations

For the i5-11400F + RTX 4080 in Roblox, the data suggests that the most balanced preset at 4K is Medium. At 2160p, Medium averages 221 FPS with a minimum and maximum of 188 and 254, providing the best frame-time consistency while still exceeding 200 FPS. At 1440p, the Low preset sees 325 FPS average, but the jump to Medium yields 394 FPS — that is 65 extra FPS without much load on the GPU. At 1080p, even Ultra reaches 420 FPS, but a player would likely pick High or Medium to keep graphical requirements lower while maintaining high refresh rates. If the target is a 240 Hz monitor, the data shows the system can deliver over 240 FPS at 1080p in every preset tested (420 minimum at Ultra), but at 1440p, only Low and Medium cross the 240 FPS threshold. At 4K, no preset reaches a consistent 300 FPS; the closest is Medium at 221 on a typical frame.

The least taxing pure performance is 1080p Low, which yields 376 FPS more than 4K Ultra. High at 1080p produces 517 FPS, which is likely to be beyond most monitor refresh rates, so raising settings to Ultra only costs 23.4 FPS at 1080p. In contrast, at 1440p, moving from High to Ultra costs 65 FPS (345 to 280), a significant visual quality compromise. At 4K, the best experience is arguably Medium, since the gap between Medium and High is only 26 FPS (221 to 195), while the gap to Ultra is 195 to 158, a much steeper drop. The results indicate a +2 step from Low to Medium is the most efficient in FPS-per-visual-quality across all resolutions.

FAQ

Q: What is the Fastest measured average FPS in this dataset?

A: The highest average frame rate is 643 FPS, recorded at 1920x1080 with the Low preset.

Q: At which resolution and preset does the system fall below 60 FPS?

A: The data does not include any measurement below 100 FPS. The lowest recorded average is 158 FPS at 2160p Ultra.

Q: What is the combo's ranking among all tested combinations in Roblox?

A: This i5-11400F + RTX 4080 combination is ranked 250th out of 3,711 test entries.

Q: What is the minimum frame rate at 1440p Medium?

A: The minimum FPS at 1440p Medium is 332 FPS, with an average of 390 and a maximum of 449.

Q: Is the 4K Ultra preset playable?

A: The data shows a 4K Ultra average of 158 FPS, which is far above standard refresh rates and exceeds the minimums of most modern displays.

Q: How does the GPU compare to its closest rival?

A: The RTX 4080's nearest rival is the RTX 4080 SUPER, which has an average score 0.1% higher. The AMD W5700X has a score 1.1% higher, and the RX 6750 GRE 12 GB sits 2.6% lower in score.

CPU Role

The Intel Core i5-11400F is a 6-core, 12-thread Rocket Lake processor with a base clock of 2.60 GHz and a boost of 4.40 GHz. It has 512 KB per core L2 and 12 MB shared L3 cache. The CPU's memory bus is dual-channel DDR4, supplying 51.2 GB/s of bandwidth. In Roblox, the CPU's static job is building the computational world, and the measured frame rates at 1080p indicate that it can drive the RTX 4080 to very high levels. The 1080p High average of 517 FPS is a clear sign that the game is highly multi-threaded enough to use the CPU's 12 threads, but the fact that this combo ranks only 250th suggests that slightly stronger CPUs can do better. The CPU's own performance benchmarks indicate it is not at the top of its Reserved range: 3DMark single-thread scores 868, and multi-thread max is 5,652. The R20 multi-core 6022, the R23 multi-core 14342. These are moderate numbers, but for single-thread performance the CPU is the 88th percentile in a real game. The passmark singlethread score is 2,981; and the find prime numbers score is 51. The CPU's low thread count relative to modern higher-core chips means that at 1080p Low, the frame rate is not limited by the GPU but by the CPU's ability to open the point in time scale.

Looking at the CPU's own rivalry, the i5-11400F's average benchmark score is 17,177, which is within 0.3% of the AMD EPYC 7H12 (17,120) and slightly behind the Core i5-12450H (17,239). The percentile rank war is 71st among vantages, showing it is a solid mid-range part.

The RTX 4080's 16 GB memory, 304 texture units, and 256-bit bus are all bogged by the CPU's frame generation. The boost clock 2505 MHz is hitting the CPU just as hard but the GPU is not the primary constraint. The data shows that Roblox is not a graphics-intensive workload; the high FPS at 1080p are the CPU working at its 1440 equivalents. The performance hierarchy among the measured combinations cannot be taken as a reflection on the CPU's other game characteristics: the RTX 4080's test is essentially separate from the CP's picture when the game moves beyond the low res.

The CPU's 12 thread count and 12 MB L3 cache may influence the min/max FPS spread at 1440p Medium (min 332, max 449). This shows that the scheduler depends on the game engine's use of threads. At 1080p Medium, the min is 497 and max 673, but there is no min/max data for the other presets. The i5-11400F's 65W TDP also suggests it can sustain boost clocks easily, allowing the game to reach the 643 FPS average at 1080p Low without thermal. The CPU's role is that of the linchpin that determines whether the high-end GPU is ever given a chance to rise.

In summary, the data reveals that the Intel Core i5-11400F serves as the performance ceiling in Roblox, especially at lower resolutions and high FPS scenarios. The RTX 4080 remains idle at 1080p but becomes more involved at 4K, where the average FPS drops to 158, 123, and 63 compared to the low-res. The combos ranking of 250 out of 3711 is a strong result, but it also hints that a more powerful CPU could push this pairing higher in the stack. The scale of the difference between 1080p and 4K suggests that Roblox's engine has a disproportionate number of CPU-race operations, an aspect worth investigating further for why the performance scale does not match the GPU's capabilities.