Roblox

Roblox is a sandbox title that rarely stresses high-end hardware, but the measured results for the Intel Core Ultra 7 265K paired with the NVIDIA GeForce RTX 4080 show a combination that is massively overqualified for the task, delivering extremely high frame rates at every resolution and settings level tested. The data indicates that this CPU-GPU pairing is capable of pushing Roblox far beyond the refresh rates of typical displays, with the primary bottleneck shifting between the processor and graphics card depending on the resolution and quality preset selected.

CPU Role — cores, clocks, and how they relate to this game's results

The Intel Core Ultra 7 265K is a 20-core, 20-thread processor built on the Arrow Lake architecture using a 3 nm process. It has a base clock of 3.90 GHz and a boost clock of 5.50 GHz, with a 30 MB shared L3 cache and 3 MB of L2 cache per core. The processor supports DDR5 memory through a dual-channel interface with a bandwidth of 102.4 GB/s, and it features an integrated Arc Xe-LPG Graphics 64EU unit, though the discrete RTX 4080 renders all game frames in these measurements.

For a game like Roblox, which is generally not heavily threaded, the 265K’s high boost clock is more relevant than its core count. The single-core performance is strong, as evidenced by a Geekbench single-core score of 2713 and a Cinebench R23 single-core score of 2020. These scores place the CPU in the 94th percentile among all CPUs, indicating that it ranks among the top processors for lightly-threaded workloads. The multi-core scores are also substantial — 35850 in Cinebench R23 and 23085 in Geekbench multi-core — but Roblox’s engine rarely scales to use all 20 threads.

The data from the measured FPS rows shows that the CPU is not a limiting factor at 1080p. At 1920x1080 with Low settings, the combo achieves an average of 643 FPS, which is the highest average recorded across all configurations. This suggests that the CPU is capable of feeding the GPU with draw calls fast enough to saturate the graphics card even at low resolutions. The CPU’s performance relative to its nearest rivals in synthetic benchmarks is nearly identical: it trails the Intel Xeon 6511P by 0.2% and the Intel Xeon Platinum 8270 by 0.7%, while leading the Intel Core i7-14700KF by 1% and the AMD Ryzen 7 9700F by 1.3%. This narrow spread confirms that the 265K is a top-tier processor, but the measured Roblox frame rates indicate that even a slightly slower CPU would likely produce similar results in this game due to the engine’s modest threading demands.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the Intel Core Ultra 7 265K and the NVIDIA GeForce RTX 4080 achieves a rank of 250 out of 3711 tested combos in Roblox, placing it in the top 6.7% of all tested systems. This is a strong result, but it is not at the absolute top of the leaderboard, which suggests that there are other combinations that produce even higher frame rates in Roblox. Given the extremely high FPS figures measured — 643 average at 1080p Low — the rank is likely constrained by factors other than raw compute performance, such as memory latency or engine-level synchronization.

The ranking becomes more meaningful when compared to the synthetic benchmark standings. The CPU sits in the 94th percentile and the GPU in the 86th percentile, yet the combo’s in-game rank of 250/3711 translates to roughly the 93rd percentile. This close alignment between the component percentiles and the combo rank indicates that Roblox performance scales generally with hardware tier, but the game’s sandbox nature means that user-generated content can create highly variable workloads. The data shows that the combo is well above average, but the top 249 combos likely include systems with even higher single-thread performance or faster memory, which could matter more in Roblox’s physics and scripting scenarios than the 265K’s 20 cores.

The deltaPct values for the CPU’s nearest rivals show that the 265K is within 1.3% of its closest competitors in average benchmark score, yet the in-game rank of 250 suggests that small differences in CPU performance could shift the ranking significantly if other components remain constant. For the GPU, the RTX 4080 is within 2.7% of its nearest rivals, with the RTX 4080 SUPER being 0.1% faster, the AMD Radeon Pro W5700X being 1.1% slower, and the AMD Radeon RX 6750 GRE 12 GB being 2.6% slower. These margins are small, and in a game like Roblox where frame rates exceed 400 FPS at lower resolutions, the ranking is more sensitive to CPU-side bottlenecks than to GPU rasterization throughput.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data reveals a clear scaling pattern across resolutions. At 1080p with High settings, the average frame rate is 517 FPS. Moving to 1440p drops this to 345 FPS, a reduction of 33.3%, and then to 4K at 195 FPS, another 43.5% drop from 1440p. This steep decline indicates that the RTX 4080 becomes the limiting factor as resolution increases, because the GPU must render more pixels per frame. The CPU has ample headroom at 1080p, as evidenced by the 643 FPS average at Low settings, which is 24.4% higher than the High setting at the same resolution.

The drop from 1080p to 1440p at High settings (517 to 345 FPS) is a 172 FPS difference, while the drop from 1440p to 4K (345 to 195 FPS) is 150 FPS. The percentage drops are similar — 33.3% and 43.5% respectively — but the absolute differences are slightly smaller at higher resolutions, which is consistent with a GPU that is approaching its fill-rate limits. At 4K Ultra, the average FPS falls to 158, which is the lowest average recorded across all settings and resolutions. This represents a 75.4% drop from the 1080p Low average of 643 FPS, showing that the Ultra preset at 4K is the most demanding configuration tested.

The data also shows that resolution has a larger impact on frame rates than settings changes. At 4K, moving from Low to Ultra reduces the average FPS from 243 to 158, a 35.0% drop. At 1080p, the same settings change reduces the average from 643 to 420, a 34.7% drop. This consistency suggests that the RTX 4080’s rendering load scales proportionally with both resolution and quality settings, but the CPU’s role becomes more prominent at lower resolutions where the GPU is less saturated. The 1080p Low result of 643 FPS indicates that the CPU can sustain very high frame rates, but the 4K Ultra result of 158 FPS shows that the GPU’s pixel throughput is the primary constraint at high resolutions.

FAQ — 4-6 Q&A pairs answerable from FACT PACK data

Q: What is the highest average FPS recorded for this combo, and at what settings?

A: The highest average FPS is 643, achieved at 1920x1080 resolution with Low settings. This is the maximum average frame rate across all measured configurations in the data.

Q: How does the combo rank compared to other tested systems in Roblox?

A: The combo ranks 250th out of 3711 tested combinations, which places it in the top 6.7% of all systems. This is a high rank, but not the top, indicating that some other combos achieve higher frame rates in Roblox.

Q: What is the lowest average FPS recorded, and what configuration produces it?

A: The lowest average FPS is 158, recorded at 3840x2160 resolution with Ultra settings. This is the most demanding configuration tested and represents a significant drop from the 1080p Low average.

Q: How does the CPU's single-core performance compare to its nearest rivals?

A: The Intel Core Ultra 7 265K has a Geekbench single-core score of 2713 and a Cinebench R23 single-core score of 2020. In average benchmark score, it is 0.2% slower than the Intel Xeon 6511P, 0.7% slower than the Intel Xeon Platinum 8270, 1% faster than the Intel Core i7-14700KF, and 1.3% faster than the AMD Ryzen 7 9700F.

Q: What is the minimum FPS recorded for Medium settings at 1440p?

A: At 2560x1440 with Medium settings, the minimum FPS recorded is 332, with an average of 390 FPS and a maximum of 449 FPS. This is the only configuration at 1440p that includes min and max FPS data.

Q: How much faster is the 1080p Low setting compared to the 4K Ultra setting?

A: The 1080p Low setting achieves an average of 643 FPS, while the 4K Ultra setting achieves an average of 158 FPS. This means the 1080p Low result is 4.07 times higher than the 4K Ultra result.

GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce RTX 4080 is built on the Ada Lovelace architecture using a 5 nm process at TSMC, with 45,900 million transistors on a 379 mm² die. It has 16 GB of GDDR6X memory on a 256-bit bus, providing a bandwidth of 716.8 GB/s. The GPU’s base clock is 2205 MHz with a boost clock of 2505 MHz, and the memory runs at an effective speed of 22.4 Gbps. The card has 9728 shading units, 304 TMUs, and 112 ROPs, along with 76 ray tracing cores and 304 tensor cores.

For Roblox, the RTX 4080’s 16 GB VRAM is far more than needed, as the game’s blocky textures and simple geometry do not require large framebuffers. The GPU’s raw compute power, measured at 48.74 TFLOPS for FP32, is also excessive for Roblox’s rendering demands. The benchmark scores reflect this capability: the GPU achieves a Passmark G3D score of 34457 and a Geekbench OpenCL score of 214739, placing it in the 86th percentile of all GPUs. Its nearest rival, the RTX 4080 SUPER, is only 0.1% faster in average score, while the AMD Radeon RX 6750 GRE 12 GB is 2.6% slower.

Despite the GPU’s enormous headroom, the measured FPS at 4K Ultra drops to 158 average, indicating that even the RTX 4080 can be brought to its knees by high-resolution rendering in Roblox. The scaling from Low to Ultra at 4K shows a 35% reduction in frame rate, which aligns with the GPU’s pixel rate of 280.6 GPixel/s and texture rate of 761.5 GTexel/s. At 1080p, the GPU is less stressed, and the 643 FPS at Low settings suggests that the CPU can push frames faster than the GPU can rasterize them, but at 4K, the GPU’s fill-rate limits become the binding constraint. The RTX 4080’s 16 GB of VRAM and high bandwidth are not the limiting factors; rather, the shading and pixel processing workload at 4K Ultra exceeds the card’s throughput.

Settings Recommendations — which preset gives the best experience per the measured rows

Based on the measured FPS data, the Medium preset appears to offer the best balance between visual quality and performance for this combo. At 1080p Medium, the average FPS is 585, which is only 9.0% lower than the Low preset’s 643 FPS but provides substantially improved graphics. The 1440p Medium average is 390 FPS, which is still extremely high and well above the refresh rates of most monitors. Even at 4K Medium, the average FPS of 221 is more than sufficient for smooth gameplay, and it is 39.9% higher than the Ultra preset’s 158 FPS at the same resolution.

The Ultra preset, while visually superior, incurs significant performance costs. At 1080p Ultra, the average FPS drops to 420, which is 28.2% lower than Medium. At 1440p Ultra, the average is 280 FPS, a 28.2% reduction from Medium’s 390 FPS. At 4K Ultra, the average of 158 FPS is the lowest measured, and while it remains playable, it is a 28.5% drop from Medium’s 221 FPS. The data shows that the step from Medium to Ultra costs roughly the same percentage of performance at each resolution, suggesting that the Ultra preset adds a consistent rendering burden.

For users with high-refresh-rate displays, the Medium preset at 1080p or 1440p is the recommended choice because it delivers frame rates in the 390-585 FPS range, which far exceeds typical 144Hz or 240Hz displays. At 4K, the Medium preset’s 221 FPS average is still above the refresh rate of most 4K monitors, making it the optimal choice for high-resolution gaming. The Low preset offers marginal FPS gains over Medium — 9.9% at 1080p, 10.0% at 1440p, and 10.0% at 4K — but these gains come at the cost of significantly reduced visual fidelity, which is not justified given the already high frame rates at Medium settings. The High preset sits between Medium and Ultra, with 517 FPS at 1080p, 345 FPS at 1440p, and 195 FPS at 4K, but it does not offer as balanced a trade-off as Medium.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data provides a complete picture of performance across three resolutions and four settings levels. At 1920x1080, the Low preset achieves an average of 643 FPS, the Medium preset achieves 585 FPS with a minimum of 497 and a maximum of 673, the High preset achieves 517 FPS, and the Ultra preset achieves 420 FPS. This shows a clear progression where each settings tier reduces the average FPS by between 18.8% and 9.1% from the previous tier. The gap between Low and Medium is 58 FPS, between Medium and High is 68 FPS, and between High and Ultra is 97 FPS, indicating that the Ultra preset is the most demanding at 1080p.

At 2560x1440, the Low preset achieves an average of 429 FPS, the Medium preset achieves 390 FPS with a minimum of 332 and a maximum of 449, the High preset achieves 345 FPS, and the Ultra preset achieves 280 FPS. The performance drop from 1080p to 1440p is consistent across settings: Low drops by 33.3% (643 to 429), Medium drops by 33.3% (585 to 390), High drops by 33.3% (517 to 345), and Ultra drops by 33.3% (420 to 280). This uniform reduction indicates that the GPU’s rendering load scales linearly with pixel count across all settings.

At 3840x2160, the Low preset achieves an average of 243 FPS, the Medium preset achieves 221 FPS with a minimum of 188 and a maximum of 254, the High preset achieves 195 FPS, and the Ultra preset achieves 158 FPS. The drop from 1440p to 4K is slightly larger than the drop from 1080p to 1440p: Low drops by 43.4% (429 to 243), Medium drops by 43.3% (390 to 221), High drops by 43.5% (345 to 195), and Ultra drops by 43.6% (280 to 158). This incremental increase in the percentage drop at higher resolutions confirms that the GPU is becoming more of a bottleneck as the pixel count quadruples.

The Medium preset is the only one that includes min and max FPS data for all resolutions, providing insight into frame time consistency. At 1080p Medium, the FPS ranges from 497 to 673, a spread of 176 FPS. At 1440p Medium, the range is 332 to 449, a spread of 117 FPS. At 4K Medium, the range is 188 to 254, a spread of 66 FPS. This narrowing of the FPS range at higher resolutions indicates that frame times become more consistent when the GPU is more heavily loaded, likely because the CPU has more time to prepare frames while the GPU is rendering at a slower pace. The average FPS values across all settings and resolutions demonstrate that this combo delivers extremely high performance in Roblox, with the lowest average still exceeding 150 FPS at 4K Ultra.