Roblox

The Intel Core i5-11400F is a 6-core, 12-thread desktop processor based on the Rocket Lake architecture, built on Intel's 14 nm process. It has a base clock of 2.60 GHz and a boost clock of 4.40 GHz, with 12 MB of shared L3 cache. In synthetic benchmarks, this CPU demonstrates strong single-thread performance, scoring 868 in 3dmark_single_thread and 2024 in Cinebench R23 single-core. Its multi-threaded capabilities are equally respectable, with a Cinebench R23 multicore score of 14340 and a Passmark multithread score of 16908. The CPU's average benchmark score of 17177 places it in the 71st percentile of all CPUs, indicating it outperforms the majority of processors in the database. Its nearest rivals in terms of average score include the AMD EPYC 7H12 (0.3% faster) and the Intel Core i5-12450H (0.4% slower), showing that this chip sits in a highly competitive performance tier.

In the context of Roblox, the CPU's 6 cores and 12 threads are more than sufficient to handle the game's physics and scripting workloads, which are typically not heavily multi-threaded. The high boost clock of 4.40 GHz is particularly beneficial, as Roblox's single-threaded nature means that higher clock speeds directly translate to better frame pacing and reduced stutter in complex scenes. The 12 MB of L3 cache helps keep frequently accessed game data close to the cores, reducing latency. Benchmark results indicate that this CPU is not a bottleneck for the GPU in most Roblox scenarios, as evidenced by the high frame rates achieved at 1080p where the CPU's single-thread performance is the primary limiting factor. The data shows that the CPU's single-thread score of 2981 in Passmark places it well ahead of many older or lower-clocked alternatives, ensuring that even the most demanding Roblox experiences, such as those with many players or complex user-generated content, will run smoothly.

GPU Role

The AMD Radeon RX 6650 XT is built on the RDNA 2.0 architecture with the Navi 23 chip, manufactured on TSMC's 7 nm process. It features 8 GB of GDDR6 memory on a 128-bit bus, providing 280.3 GB/s of memory bandwidth. The GPU has a base clock of 2055 MHz, a game clock of 2410 MHz, and a boost clock of 2635 MHz, with the memory running at an effective speed of 17.5 Gbps. The card's 2048 shading units, 128 texture mapping units, and 64 render output units deliver a peak FP32 performance of 10.79 TFLOPS. In synthetic benchmarks, the GPU scores 17166 in Passmark G3D and 81306 in Geekbench Vulkan, placing it in the 65th percentile of all GPUs. Its average benchmark score of 19765 is nearly identical to rivals like the NVIDIA Tesla K40m (0.6% faster) and the AMD FirePro D300 (0.7% slower), indicating a well-balanced mid-range performer.

For Roblox, the GPU's 8 GB of VRAM is ample, as the game's textures and assets are typically modest in size, even at higher settings. The RDNA 2.0 architecture's efficient execution and high clock speeds ensure that the GPU can push high frame rates without excessive power draw. The 128-bit memory bus and 280.3 GB/s bandwidth are sufficient to feed the GPU's cores at 1080p and 1440p resolutions, though at 4K the bandwidth may become a limiting factor. The data shows that the GPU's performance scales well with resolution, but the frame rate drops from 1080p to 4K indicate that the GPU is the primary bottleneck at higher resolutions, particularly when settings are set to Ultra. The GPU's DirectX 12 Ultimate support ensures compatibility with modern rendering features, although Roblox does not heavily utilize these advanced capabilities. The card's 176 W TDP and dual-slot design make it a practical choice for most desktop builds, requiring only a 450 W power supply and a single 8-pin power connector.

FAQ

Q: How does the Intel Core i5-11400F compare to its nearest CPU rivals in synthetic benchmarks?

A: The i5-11400F has an average benchmark score of 17177, which is 0.3% higher than the AMD EPYC 7H12's score of 17120 and 0.6% higher than the Intel Core Ultra 7 164U's score of 17074. However, it is 0.4% slower than the Intel Core i5-12450H, which scores 17239, and 0.6% slower than the AMD Ryzen 3 PRO 8300G, which scores 17278.

Q: What is the GPU's performance percentile, and what does that mean for Roblox?

A: The AMD Radeon RX 6650 XT is in the 65th percentile of all GPUs, meaning it outperforms approximately two-thirds of the GPUs in the database. For Roblox, this indicates that the GPU is more than capable of handling the game's graphics at high frame rates, even at 1440p, but may struggle to maintain high frame rates at 4K with Ultra settings.

Q: Is the CPU or GPU the limiting factor in Roblox at 1080p?

A: At 1080p, the CPU becomes the primary limiting factor. The data shows that the average FPS at 1080p with Low settings is 320, which is significantly higher than at 4K, suggesting that the GPU has headroom left. The CPU's single-thread performance, while strong, is the bottleneck that prevents even higher frame rates in CPU-intensive Roblox experiences.

Q: What are the benefits of the GPU's 8 GB of VRAM for this game?

A: The 8 GB of GDDR6 memory is more than sufficient for Roblox, as the game's textures and assets are not memory-intensive. This means that the VRAM will never be a limiting factor, even at 4K resolution with Ultra settings, where the average FPS is 79. The ample VRAM also ensures that the GPU does not experience texture pop-in or stutter due to memory swapping.

Q: How does the CPU's memory bandwidth affect Roblox performance?

A: The i5-11400F supports dual-channel DDR4 memory with a bandwidth of 51.2 GB/s. For Roblox, this bandwidth is adequate, as the game does not require excessive memory throughput. However, the CPU's 12 MB of L3 cache helps reduce the frequency of memory accesses, which is beneficial for the game's single-threaded performance.

Q: What is the significance of the GPU's boost clock of 2635 MHz?

A: The boost clock of 2635 MHz is higher than the base clock of 2055 MHz and the game clock of 2410 MHz. This means that under load, the GPU can reach higher clock speeds, providing a performance boost in graphically demanding scenes. For Roblox, this translates to smoother frame rates during fast-paced action or when many objects are on screen.

How This Combo Ranks

The combination of the Intel Core i5-11400F and AMD Radeon RX 6650 XT ranks 2398 out of 3711 tested combos in Roblox. This places the combo in the 35th percentile of all tested configurations, meaning that about 65% of the combos in the database achieve higher performance in this game. While this rank might seem low, it is important to consider the context: Roblox is a game that is heavily CPU-bound at lower resolutions, and the i5-11400F's 6-core/12-thread configuration is solid but not top-tier. The GPU's 8 GB of VRAM and high clock speeds are well-suited for the game's graphics, but the combo's overall rank is dragged down by the CPU's single-thread performance relative to newer or higher-clocked processors.

The data shows that this combo performs best at 1080p, where the GPU is not the bottleneck, and the CPU's boost clock of 4.40 GHz can deliver high frame rates. At 1440p, the combo still delivers excellent performance, with average FPS in the 139-213 range depending on settings. However, at 4K, the combo's rank drops as the GPU becomes the limiting factor, with average FPS falling to 79-121. The combo's rank of 2398 indicates that it is a capable mid-range setup that will run Roblox smoothly at 1080p and 1440p, but it is not among the elite configurations for this game.

Resolution Scaling

The measured FPS data reveals a clear pattern of performance scaling across resolutions. At 1080p, the combo achieves its highest frame rates, with an average of 320 FPS at Low settings, 291 FPS at Medium, 257 FPS at High, and 209 FPS at Ultra. Moving to 1440p, the average FPS drops to 213 at Low, 194 at Medium, 172 at High, and 139 at Ultra. At 4K, the frame rates drop further to 121 at Low, 110 at Medium, 97 at High, and 79 at Ultra.

The percentage drops from 1080p to 4K are substantial. At Low settings, the average FPS drops from 320 to 121, a decrease of approximately 62%. At Medium settings, the drop is from 291 to 110, a decrease of about 62%. At High settings, the drop is from 257 to 97, a decrease of about 62%. At Ultra settings, the drop is from 209 to 79, a decrease of about 62%. This consistent drop of roughly 62% across all settings indicates that the GPU is the primary limiting factor at 4K, as the increased pixel count places a heavy load on the GPU's rendering pipeline.

Conversely, the scaling from 1080p to 1440p shows a milder drop. At Low settings, the average FPS drops from 320 to 213, a decrease of about 33%. At Medium settings, the drop is from 291 to 194, a decrease of about 33%. At High settings, the drop is from 257 to 172, a decrease of about 33%. At Ultra settings, the drop is from 209 to 139, a decrease of about 33%. This consistent drop suggests that the CPU is still able to keep up with the GPU's demands at 1440p, and the limiting factor shifts more toward the GPU as resolution increases. The data clearly shows that the CPU is the bottleneck at 1080p, while the GPU becomes the bottleneck at 4K.

Measured FPS Breakdown

The measured FPS data provides a detailed view of the combo's performance in Roblox across different resolutions and settings. At 1920x1080, the combo delivers an average of 320 FPS at Low settings, 291 FPS at Medium settings, 257 FPS at High settings, and 209 FPS at Ultra settings. The Medium settings also provide a minimum FPS of 247 and a maximum of 334, indicating good frame consistency. At this resolution, the frame rates are exceptionally high, making the game extremely smooth on any display, even high-refresh-rate monitors.

At 2560x1440, the average FPS drops to 213 at Low settings, 194 at Medium settings, 172 at High settings, and 139 at Ultra settings. The Medium settings show a minimum of 165 and a maximum of 223, which still provides a smooth experience, though not as consistently high as at 1080p. At this resolution, the combo remains more than capable of driving a 144Hz monitor at High settings, with an average of 172 FPS.

At 3840x2160, the average FPS drops to 121 at Low settings, 110 at Medium settings, 97 at High settings, and 79 at Ultra settings. The Medium settings show a minimum of 93 and a maximum of 126. At this resolution, the combo begins to show its limits, particularly at Ultra settings where the average FPS falls below 80. While the game remains playable, the frame rates are not ideal for competitive play or high-refresh-rate displays. The data indicates that for 4K gaming, the GPU is the limiting factor, and users should expect to lower settings to maintain higher frame rates. The measured FPS values highlight that the combo is best suited for 1080p and 1440p gaming, where it delivers excellent performance, while 4K is playable but requires setting compromises.