Roblox

The Intel Core i5-11400F paired with the AMD Radeon RX 7900 XTX delivers exceptionally high frame rates in Roblox across all tested configurations, positioning the combo at rank 280 out of 1800 in the database. The data indicates this pairing is heavily GPU-bound at 4K, but transitions to a CPU-limited scenario at 1080p where frame rates exceed 470 FPS on average. The following analysis breaks down the measured performance, component roles, and scaling characteristics.

FAQ

Q: What is the overall performance ranking of this CPU and GPU combination in Roblox?

A: The combo ranks 280th out of 1800 tested combinations, placing it in the top 15.6% of all systems in the database. This is a strong result, though the high frame rates suggest the game is not particularly demanding on either component.

Q: How does the i5-11400F compare to its nearest rival processors?

A: The i5-11400F has an average benchmark score of 17181, which is essentially identical to the AMD Ryzen 7 5700U at 17189 (0% delta). It is also within 0.2% of the Intel Core i7-1260P (17212) and the Intel Core Ultra 7 164U (17215), and only 0.2% ahead of the Intel Core i5-1240U (17141). The processor sits in the 75th percentile of all CPUs.

Q: What is the GPU's performance context relative to its nearest rivals?

A: The RX 7900 XTX has an average benchmark score of 44019, placing it in the 85th percentile of all GPUs. It is 0.4% behind the AMD Radeon Pro 580 (44195), 0.8% ahead of the NVIDIA GeForce RTX 4090 Mobile (43667), 1.6% ahead of the NVIDIA Quadro M6000 (43313), and 2% behind the NVIDIA GeForce RTX 4070 Ti (44900).

Q: What is the highest average FPS recorded in the measured data?

A: The highest average FPS is 580.8, achieved at 1920x1080 resolution with Low settings. The next highest is 531.1 at the same resolution with Medium settings, followed by 470.4 at 1080p High settings.

Q: What is the lowest average FPS recorded in the measured data?

A: The lowest average FPS is 147.2, recorded at 3840x2160 resolution with Ultra settings. This is still a very playable frame rate, indicating the system never struggles to maintain smooth performance in Roblox.

Q: Does the CPU's memory bandwidth or cache configuration appear to bottleneck performance?

A: The i5-11400F features 12 MB of shared L3 cache, 512 KB of L2 per core, and dual-channel DDR4 memory with 51.2 GB/s bandwidth. The benchmark results show that at 1080p Low settings, the system reaches 580.8 FPS, suggesting the CPU's 6 cores and 12 threads are sufficient to feed the GPU, though the 3DMark single-thread score of 868 and Cinebench R23 single-core score of 2029 indicate per-core performance is modest by modern standards.

GPU Role

The AMD Radeon RX 7900 XTX is the dominant component in this analysis, featuring 24 GB of GDDR6 memory on a 384-bit bus delivering 960.0 GB/s of bandwidth. The GPU operates at a base clock of 1929 MHz, with a boost clock of 2498 MHz and a game clock of 2365 MHz. Its memory runs at 2500 MHz with 20 Gbps effective speed. This configuration yields a pixel rate of 479.6 GPixel/s and a texture rate of 959.2 GTexel/s, with FP32 performance reaching 61.39 TFLOPS.

In Roblox, the GPU's role becomes increasingly important as resolution scales up. At 3840x2160, the frame rate drops from 580.8 FPS at 1080p Low to 223 FPS at 4K Low, a reduction of 61.6%. This indicates that at higher resolutions, the RX 7900 XTX's raw compute and memory bandwidth are being exercised more heavily. The 24 GB VRAM allocation is far beyond what Roblox requires, but the sheer bandwidth of 960.0 GB/s helps maintain high frame rates even at 4K Ultra where the GPU must process more complex scenes.

The GPU's benchmark scores reflect its capability: a 3DMark Steel Nomad DX12 score of 6841, Geekbench OpenCL score of 189573, and Vulkan score of 192597. The PassMark G3D score of 31238 further confirms its position in the 85th percentile. However, in Roblox's relatively simple rendering environment, the GPU is rarely the limiting factor until 4K resolution is combined with Ultra settings.

Resolution Scaling

The measured FPS data reveals distinct scaling patterns across the three tested resolutions. From 1920x1080 to 2560x1440, the average FPS drops by roughly a third across all settings. For example, High settings go from 470.4 FPS at 1080p to 311.3 FPS at 1440p, a 33.8% decrease. Low settings drop from 580.8 to 391.2 FPS (32.6% decrease), Medium from 531.1 to 353.7 FPS (33.4% decrease), and Ultra from 382 to 252.1 FPS (34.0% decrease).

The scaling from 1440p to 2160p shows a more pronounced drop, indicating the GPU becomes the primary bottleneck at 4K. High settings fall from 311.3 to 174.4 FPS, a 44.0% decrease. Low settings go from 391.2 to 223 FPS (43.0% decrease), Medium from 353.7 to 200.5 FPS (43.3% decrease), and Ultra from 252.1 to 147.2 FPS (41.6% decrease). This steeper decline at 4K suggests that while the RX 7900 XTX is powerful, the pixel fill rate requirements at 3840x2160 begin to exceed what even this high-end GPU can sustain without proportional drops.

The fact that 1080p frame rates exceed 580 FPS at Low settings indicates a CPU limit; the i5-11400F's 6 cores and 12 threads, boosted to 4.40 GHz, cannot generate frames faster than this regardless of GPU headroom. This is corroborated by the relatively modest single-thread performance metrics, such as the PassMark single-thread score of 2981 and the 3DMark single-thread score of 868.

Settings Recommendations

Based on the measured data, the optimal balance of visual quality and frame rate depends heavily on the target resolution. At 1920x1080, even Ultra settings produce an average of 382 FPS, which is far beyond any display's refresh rate capability. The difference between Low and Ultra at 1080p is 198.8 FPS (580.8 vs 382), so users with high-refresh monitors can comfortably select Ultra without sacrificing smoothness.

At 2560x1440, Ultra settings deliver 252.1 FPS, while High settings provide 311.3 FPS. The 59.2 FPS gap between these presets is noticeable in raw numbers, but both exceed 240 Hz refresh rates. For users prioritizing maximum visual fidelity, Ultra remains viable. Medium settings at 1440p produce 353.7 FPS, offering a middle ground for those who notice the difference between medium and high textures.

At 3840x2160, the choice becomes more consequential. Ultra settings yield 147.2 FPS, which is still smooth for most displays but represents a significant drop from High settings at 174.4 FPS. The 27.2 FPS difference between High and Ultra at 4K may not justify the visual upgrade for competitive play. Low settings at 4K produce 223 FPS, but the visual compromise is substantial. The data suggests High settings at 4K offer the best balance, maintaining above 170 FPS while preserving most graphical features. Medium at 200.5 FPS is a reasonable compromise if High does not meet specific refresh rate targets.

Measured FPS Breakdown

At 1920x1080, the measured average frame rates span from 382 FPS at Ultra to 580.8 FPS at Low. The specific values are: Low at 580.8 FPS, Medium at 531.1 FPS, High at 470.4 FPS, and Ultra at 382 FPS. The spread between Low and Ultra is 198.8 FPS, representing a 34.2% reduction from the lowest to highest quality preset. This resolution shows the smallest relative impact of settings changes, as the CPU begins to limit performance.

At 2560x1440, frame rates range from 252.1 FPS at Ultra to 391.2 FPS at Low. The breakdown is: Low at 391.2 FPS, Medium at 353.7 FPS, High at 311.3 FPS, and Ultra at 252.1 FPS. The difference between Low and Ultra is 139.1 FPS, a 35.6% reduction. The proportional drop from Low to Medium is 37.5 FPS (9.6%), from Medium to High is 42.4 FPS (12.0%), and from High to Ultra is 59.2 FPS (19.0%). This shows that the Ultra preset imposes the largest incremental cost.

At 3840x2160, the measured values are: Low at 223 FPS, Medium at 200.5 FPS, High at 174.4 FPS, and Ultra at 147.2 FPS. The total range from Low to Ultra is 75.8 FPS, a 34.0% reduction. The step from Low to Medium costs 22.5 FPS (10.1%), Medium to High costs 26.1 FPS (13.0%), and High to Ultra costs 27.2 FPS (15.6%). This resolution shows the most consistent incremental degradation, confirming the GPU is the limiting factor here. The 4K Ultra result of 147.2 FPS remains above the 144 Hz threshold, but the margin is thinner than at lower resolutions.