Roblox

The combination of the Intel Core i5-11400F and the AMD Radeon RX 9070 XT produces exceptionally high frame rates in Roblox, a Sandbox title from 2006. The data shows this pairing is heavily GPU-limited at lower resolutions, with the CPU becoming a more significant factor only at 4K Ultra settings. Across all measured configurations, the system delivers playable performance, though the scaling patterns reveal distinct bottlenecks that inform the optimal settings for different display targets.

Resolution Scaling

The frame rate drop from 1080p to 4K is steep and consistent, but the magnitude depends heavily on the quality preset. At Low settings, the average FPS falls from 502 at 1920x1080 to 190 at 3840x2160 — a reduction of 312 frames, or roughly 62% fewer frames. At Ultra settings, the drop is from 328 at 1080p to 124 at 4K, a decline of 204 frames, representing about 62% fewer frames as well. This proportional scaling suggests that even at Low settings, the RX 9070 XT is not being fully utilized at 1080p, since the percentage drop is similar across presets.

Looking at the 1440p to 4K transition, the pattern holds. At Medium settings, the average FPS goes from 305 at 2560x1440 down to 173 at 3840x2160, a 43% reduction. At High settings, it drops from 270 to 153, a 43% decline as well. The consistency of these percentages across different preset levels indicates that the limiting component shifts predictably with resolution. At 1080p, the CPU is likely the primary constraint, as the i5-11400F’s 6 cores and 12 threads must feed frames faster than the GPU can render them at higher resolutions. At 4K, the GPU becomes the bottleneck, with the 153 FPS at High settings being more than sufficient for smooth gameplay.

The interesting anomaly is the Low preset at 4K, which still manages 190 FPS average. This is only 37 FPS behind the Medium preset at the same resolution, suggesting that the Low preset removes enough graphical overhead to allow the CPU to push more frames through, but the GPU still has headroom. The data implies that at 4K Low, neither component is fully saturated, but the frame rate is already so high that further optimization yields diminishing returns.

How This Combo Ranks

This specific CPU-GPU combination ranks 895th out of 3711 tested combos in Roblox, placing it in the top 24% of all systems evaluated. The percentile ranking is notable because it combines a mid-range 11th Gen CPU with a high-end RDNA 4 GPU, and the result is a system that outperforms the vast majority of tested configurations in this game.

The CPU’s individual percentile is 71, meaning it beats 71% of all CPUs in the database. Its nearest rivals include the AMD EPYC 7H12, which scores 0.3% higher, and the Intel Core Ultra 7 164U, which scores 0.6% higher. The i5-11400F’s average benchmark score of 17177 is closely matched by these competitors, with the AMD Ryzen 3 PRO 8300G scoring 0.6% higher and the Intel Core i5-12450H scoring 0.4% higher. This tight grouping suggests that the CPU is not a differentiator in Roblox, as the game’s workload is not heavily multi-threaded.

The GPU’s percentile is 55, which is lower than the CPU’s, yet the combo still ranks well. This is because Roblox is not a graphically demanding title, so even a GPU with a 55th percentile score is overkill. The RX 9070 XT’s nearest rivals in the database are older or lower-end cards like the AMD Radeon HD 7770M and NVIDIA GeForce GTX 570, which score within 0.2% of it. This is misleading — the RX 9070 XT’s average benchmark score of 13543 is dragged down by legacy tests, but in Roblox, its 16 GB of VRAM and high clock speeds ensure it never becomes a limiting factor at typical settings.

Settings Recommendations

The measured data strongly supports using High settings at 1440p or 4K, as this preset offers the best balance of visual quality and frame rate headroom. At 2560x1440 High, the system delivers 270 FPS average, which is well above the refresh rate of most monitors. At 3840x2160 High, it maintains 153 FPS, which is still excellent for a 4K display, especially given that Roblox’s visual effects benefit from higher quality shadows and textures.

For users with 1080p displays, Ultra settings are the clear choice. The 328 FPS average at 1920x1080 Ultra is more than enough to saturate a 144Hz or 240Hz monitor, and the visual uplift from Medium (457 FPS) to Ultra is substantial. The only reason to consider Medium would be if the user has a 360Hz or faster display, but even then, the difference between 457 and 328 FPS is unlikely to be perceptible in a Sandbox game.

At 4K, High settings are recommended over Ultra. The Ultra preset drops to 124 FPS, which is still playable but leaves less headroom for frame time spikes. High at 4K offers 153 FPS, a 23% improvement, with only a modest reduction in visual fidelity. Low settings at any resolution are unnecessary, as even the most demanding preset produces frame rates far above the playability threshold.

Measured FPS Breakdown

At 1920x1080, the system produces its highest frame rates. Low settings yield 502 FPS average, Medium produces 457 FPS with a minimum of 389 and maximum of 526, High delivers 404 FPS, and Ultra settles at 328 FPS. The spread from Low to Ultra is 174 FPS, indicating that the CPU is the primary constraint at this resolution, as the GPU is capable of rendering frames far faster than the processor can issue draw calls.

Moving to 2560x1440, the frame rates remain high but show a clear downward trend. Low settings average 335 FPS, Medium averages 305 FPS with a range of 259 to 351, High averages 270 FPS, and Ultra averages 219 FPS. The gap between Low and Ultra narrows to 116 FPS, suggesting that the GPU is starting to take on more of the workload. The Medium preset’s minimum of 259 FPS is still comfortably above 144Hz, so this resolution is safe for high-refresh gaming.

At 3840x2160, the frame rates drop significantly but remain playable. Low settings average 190 FPS, Medium averages 173 FPS with a minimum of 147 and maximum of 198, High averages 153 FPS, and Ultra averages 124 FPS. The Medium preset’s minimum of 147 FPS is the lowest recorded value in the entire dataset, but it still clears the 144Hz threshold by a narrow margin. Ultra at 4K is the only configuration that dips below 144 FPS, making it less ideal for high-refresh displays.

GPU Role

The AMD Radeon RX 9070 XT is built on the Navi 48 chip using TSMC’s 4 nm process, with 53,900 million transistors packed into a 357 mm² die. Its RDNA 4.0 architecture features 4096 shading units, 256 TMUs, and 128 ROPs, which are more than sufficient for Roblox’s modest graphical demands. The GPU’s base clock is 1660 MHz, with a boost clock of 2970 MHz and a game clock of 2400 MHz, allowing it to adapt to varying workloads.

The 16 GB of GDDR6 memory on a 256-bit bus provides 644.6 GB/s of bandwidth, which is far beyond what Roblox requires. The game’s textures are typically lightweight, so the VRAM capacity is effectively unused at all tested settings. The pixel rate of 380.2 GPixel/s and texture rate of 760.3 GTexel/s are also overkill for this title. The GPU’s TDP of 304 W and dual-slot design with 2x 8-pin power connectors indicate a high-power part, but in Roblox, it likely never approaches sustained maximum load at 1080p or 1440p.

The benchmark data shows the GPU’s PassMark G3D score of 26795, which is 55th percentile among all GPUs. However, its DirectX 12 score of 78 and DirectX 11 score of 292 are low, reflecting the fact that these legacy tests do not exercise the RDNA 4 architecture effectively. In Roblox, the GPU’s raw compute power (48.66 TFLOPS FP32) is more than enough to handle the game’s simple shaders and physics, so the GPU role is primarily to render frames without bottlenecking the CPU.

FAQ

Q: What is the best resolution to play Roblox with this combo?

A: The data shows that 2560x1440 High settings produce 270 FPS average, which is ideal for high-refresh displays. At 4K High, the system still delivers 153 FPS, making it viable for 4K gaming, though 1440p offers more headroom.

Q: Does this system ever drop below 144 FPS?

A: Yes. At 3840x2160 Ultra, the average FPS is 124, which is below 144. The Medium preset at 4K has a minimum of 147 FPS, just above the threshold, but Ultra is the only setting that averages below 144 FPS.

Q: How does the CPU compare to its nearest rivals in Roblox?

A: The i5-11400F has an average benchmark score of 17177, which is within 0.6% of its nearest rivals. The AMD EPYC 7H12 scores 0.3% higher, while the Intel Core Ultra 7 164U scores 0.6% higher, indicating that CPU choice has minimal impact on Roblox performance.

Q: Is the RX 9070 XT overkill for Roblox?

A: The benchmark results indicate yes. At 1080p Low, the system achieves 502 FPS, and even at 4K Ultra, it maintains 124 FPS. The GPU’s 16 GB VRAM and 48.66 TFLOPS compute are far beyond what this game requires, but the high frame rates ensure smooth gameplay.

Q: What is the minimum FPS recorded in the dataset?

A: The lowest minimum FPS is 147, recorded at 3840x2160 Medium settings. This is the only measured minimum below 150 FPS, and it still clears the 144Hz threshold by a small margin.

Q: How does this combo rank against other tested systems?

A: It ranks 895th out of 3711 combos, placing it in the top 24% of all tested configurations. The ranking reflects the CPU’s 71st percentile and the GPU’s 55th percentile, which combine to produce excellent results in this specific game.

CPU Role

The Intel Core i5-11400F is a 6-core, 12-thread processor from the Rocket Lake architecture, built on Intel’s 14 nm process. Its base clock of 2.60 GHz and boost clock of 4.40 GHz provide solid single-thread performance, which is critical for Roblox’s physics and scripting workloads. The CPU’s cache hierarchy includes 80 KB L1 per core, 512 KB L2 per core, and 12 MB shared L3, which helps reduce memory latency for frequently accessed data.

In benchmark tests, the i5-11400F scores 2024 in Cinebench R23 single-core and 14340 in multi-core, indicating balanced performance. Its PassMark single-thread score of 2981 is particularly relevant for Roblox, as the game’s engine does not scale well across many cores. The 3DMark single-thread score of 868 and 2-thread score of 1691 suggest that the CPU can handle the game’s main thread efficiently, but the data shows that at 1080p, the CPU becomes the limiting factor.

The CPU’s memory bandwidth of 51.2 GB/s over a dual-channel DDR4 interface is adequate for this game, though it is lower than the GPU’s 644.6 GB/s. The 12 MB shared L3 cache is modest by modern standards, but Roblox’s small asset sizes mean that cache misses are infrequent. The CPU’s 65 W TDP and 276 mm² die size indicate an efficient design, and its 71st percentile ranking versus all CPUs confirms that it is a capable processor for this workload.

The nearest rival analysis shows that the i5-11400F performs nearly identically to the AMD EPYC 7H12, Intel Core i5-12450H, AMD Ryzen 3 PRO 8300G, and Intel Core Ultra 7 164U in average benchmark scores. This suggests that Roblox’s performance is not sensitive to CPU core count or architecture, as long as single-thread speed is sufficient. The measured FPS data confirms this — at 4K High, the system delivers 153 FPS, which suggests the CPU is not a bottleneck at higher resolutions, but at 1080p Low, the 502 FPS ceiling is likely set by the CPU’s ability to process game logic and issue draw calls.