Roblox

The Intel Core i5-11400F paired with the AMD Radeon RX 6750 XT delivers a remarkably consistent experience in Roblox, with performance scaling that clearly identifies the GPU as the primary limiting factor at higher resolutions. Starting at 1920x1080 on Ultra settings, the combo produces 252 FPS, which climbs to 387 FPS on Low settings. Moving to 2560x1440, the Ultra preset yields 168 FPS, while the Low preset reaches 258 FPS. At 3840x2160, the Ultra preset drops to 95 FPS, whereas the Low preset still manages 146 FPS. The scaling pattern across these resolutions shows a predictable decline, but the relationship between settings and resolution reveals where the bottleneck shifts.

Resolution Scaling

The frame rate drop from 1080p to 4K is substantial but not catastrophic. At Ultra settings, the transition from 1920x1080 to 2560x1440 reduces average FPS from 252 to 168, a 33% decrease. Moving from 1440p to 4K at Ultra further reduces the average from 168 to 95 FPS, another 43% drop. This compounding effect means the 4K Ultra experience runs at roughly 38% of the 1080p Ultra frame rate. The Low settings preset tells a similar story: 387 FPS at 1080p, 258 FPS at 1440p, and 146 FPS at 4K. The percentage drops are 33% and 43% respectively, matching the Ultra preset almost exactly.

This consistency across presets indicates that resolution scaling is predominantly a GPU workload in Roblox. The RX 6750 XT with its 12 GB of GDDR6 memory and 432.0 GB/s bandwidth handles the increased pixel count, but the compute demand grows faster than the memory bandwidth can compensate. The 4K Medium preset shows 133 FPS, which is 12% lower than the 4K Low preset's 146 FPS, while the 4K High preset produces 117 FPS. The gap between Medium and High at 4K is 16 FPS, while the gap between High and Ultra is 22 FPS. This widening gap at higher settings suggests that the shading units and texture units are being saturated as resolution increases.

At 1080p, the differences between presets are more compressed. The Low preset's 387 FPS compared to Ultra's 252 FPS represents a 35% spread, but the 1440p spread between Low (258 FPS) and Ultra (168 FPS) is also 35%. The 4K spread between Low (146 FPS) and Ultra (95 FPS) is 35% as well. This uniform percentage spread across resolutions points to a GPU that is consistently the limiting component, with the CPU providing enough headroom to avoid becoming a bottleneck at any tested configuration.

Settings Recommendations

The measured data suggests that the Medium preset offers the most balanced experience, particularly at higher resolutions. At 4K, Medium produces 133 FPS with a minimum of 113 FPS and a maximum of 153 FPS, which is the only 4K preset with min/max data available. The 113 FPS minimum is 15% below the average, indicating some frame time variance but still maintaining playable performance. In contrast, the 4K High preset's 117 FPS average sits only 16 FPS below Medium, while 4K Ultra drops to 95 FPS, a 29% reduction from Medium.

At 1440p, the Medium preset delivers 235 FPS with a minimum of 200 FPS and a maximum of 270 FPS. The 200 FPS minimum is still well above the refresh rate of most monitors, making this configuration highly responsive. The jump from Medium to High at 1440p costs 27 FPS (235 to 208), while the jump from High to Ultra costs 40 FPS (208 to 168). The diminishing returns are evident: the visual improvement from Medium to Ultra is not matched by the 67 FPS sacrifice. At 1080p, the Medium preset's 352 FPS with a 299 FPS minimum and 405 FPS maximum provides an exceptionally smooth experience, though the Low preset's 387 FPS may appeal to competitive players seeking maximum frame rates.

For players prioritizing frame rate consistency, the Medium preset at 1440p appears to be the sweet spot. The 200 FPS minimum ensures that even demanding scenes maintain high fluidity, and the 270 FPS maximum shows the hardware has reserve capacity. The 4K Medium preset is also viable for those wanting higher resolution, with the 113 FPS minimum still exceeding 60 FPS by a wide margin. The Ultra preset is only recommended for 1080p where the 252 FPS average remains competitive, but it offers no measurable advantage in Roblox given the game's visual style.

CPU Role

The Intel Core i5-11400F is a 6-core, 12-thread processor with a base clock of 2.60 GHz and a boost clock of 4.40 GHz. It belongs to the Rocket Lake architecture and is built on Intel's 14 nm process node. The CPU has a 12 MB shared L3 cache and supports dual-channel DDR4 memory with a bandwidth of 51.2 GB/s. Its benchmark scores place it in the 71st percentile of all CPUs, with an average benchmark score of 17177. This places it close to the AMD EPYC 7H12 (0.3% higher), Intel Core i5-12450H (0.4% lower), and AMD Ryzen 3 PRO 8300G (0.6% lower).

In Roblox, the CPU's role is to feed the GPU with draw calls and physics calculations. The 6-core configuration with 12 threads is more than sufficient for this game, which is not known for heavy multi-threaded workloads. The single-thread performance, as evidenced by the 3dmark single-thread score of 868 and the Cinebench R23 single-core score of 2024, is adequate for the game's main thread. The 4.40 GHz boost clock ensures that single-threaded tasks receive maximum clock speed when needed.

The benchmark results show that the CPU's multi-threaded performance scales well: the 3dmark 2-thread score is 1691, 4-thread is 3171, 8-thread is 4691, and max-thread is 5652. This scaling indicates that the CPU can handle increased thread utilization without significant degradation, though Roblox rarely uses more than a few threads. The Passmark single-thread score of 2981 and multithread score of 16908 confirm that the CPU has balanced performance characteristics. Given that the measured FPS at 1080p Low reaches 387 FPS, the CPU is not limiting performance at lower resolutions, but the uniform percentage scaling across resolutions suggests the GPU becomes the constraint as resolution increases.

How This Combo Ranks

The combination of the Intel Core i5-11400F and AMD Radeon RX 6750 XT ranks 1673 out of 3711 tested combos in Roblox. This places it in the 45th percentile of all combinations, meaning slightly more than half of tested combos perform better in this game. The rank reflects the GPU's position in the overall hierarchy, as the RX 6750 XT sits in the 71st percentile of all GPUs with an average benchmark score of 26011. The CPU's 71st percentile ranking is identical, suggesting a well-matched pairing in terms of relative performance tiers.

The GPU's nearest rivals include the AMD Radeon R9 M395X (0.5% higher score), AMD FirePro W7100 (0.6% higher), AMD FirePro D700 (0.7% higher), and NVIDIA GeForce RTX 3080 Ti Mobile (1.1% higher). These are all older or mobile parts, indicating that the RX 6750 XT holds its own against contemporary competition. The CPU's nearest rivals are similarly close, with the AMD EPYC 7H12 being 0.3% higher and the Intel Core i5-12450H being 0.4% lower. This tight clustering suggests that the combo's rank is more influenced by the game's optimization than by any single component's weakness.

The rank of 1673 out of 3711 indicates that while this combo is not at the top end, it is firmly in the middle of the pack. This is consistent with the measured FPS values, which show that the combo can handle 4K Ultra at 95 FPS, a respectable result for a game that is not graphically demanding. The fact that the combo ranks in the 45th percentile despite delivering high absolute frame rates suggests that many other combos achieve even higher frame rates, likely due to Roblox's relatively low system requirements allowing lower-end GPUs to perform well.

GPU Role

The AMD Radeon RX 6750 XT is built on the RDNA 2.0 architecture with a 7 nm process node from TSMC. It features 2560 shading units, 160 texture mapping units, and 64 raster operation pipelines. The GPU has 40 ray tracing cores and operates at a base clock of 2150 MHz, with a boost clock of 2600 MHz and a game clock of 2495 MHz. The 12 GB of GDDR6 memory runs at 2250 MHz with an effective speed of 18 Gbps, providing 432.0 GB/s of bandwidth across a 192-bit bus. The GPU's FP32 performance is 13.31 TFLOPS, and it has a pixel rate of 166.4 GPixel/s with a texture rate of 416.0 GTexel/s.

In Roblox, the GPU's role is to render the game's blocky environments and handle the visual effects at various quality settings. The benchmark results show that the GPU's DirectX 11 score of 180 and DirectX 12 score of 80 indicate that the game likely uses an older API path, as Roblox does not require DirectX 12 Ultimate features. The GPU's Vulkan score of 98089 and OpenCL score of 16360 suggest strong compute performance, but these are not directly relevant to Roblox's rendering pipeline. The Passmark G3D score of 20700 and G2D score of 972 provide additional context for the GPU's overall capability.

The measured FPS data shows that the GPU is the limiting factor at higher resolutions. At 1080p, the GPU can produce over 300 FPS on most presets, indicating that the CPU can feed it enough data. However, at 4K, the GPU's 2560 shading units are tasked with processing four times as many pixels as 1080p, and the frame rate drops accordingly. The 12 GB VRAM is more than sufficient for Roblox, which does not have high memory requirements, so the 432.0 GB/s bandwidth is not a bottleneck. The GPU's 64 ROPs handle pixel output well, but the shading units become saturated at 4K Ultra, resulting in the 95 FPS average.

Measured FPS Breakdown

At 1920x1080, the measured FPS values are as follows: Low settings produce 387 FPS, Medium produces 352 FPS with a minimum of 299 and maximum of 405, High produces 311 FPS, and Ultra produces 252 FPS. The spread from Low to Ultra is 135 FPS, with each setting step reducing performance by approximately 35-40 FPS. At 2560x1440, Low produces 258 FPS, Medium produces 235 FPS with a minimum of 200 and maximum of 270, High produces 208 FPS, and Ultra produces 168 FPS. The spread narrows to 90 FPS, with each step reducing performance by 23-27 FPS.

At 3840x2160, Low produces 146 FPS, Medium produces 133 FPS with a minimum of 113 and maximum of 153, High produces 117 FPS, and Ultra produces 95 FPS. The spread narrows further to 51 FPS, with each step reducing performance by 13-16 FPS. This narrowing spread at higher resolutions indicates that the GPU is becoming more constrained, and the relative difference between settings diminishes. The Medium preset is the only one with complete min/max data at all resolutions, allowing for frame time analysis. At 1080p Medium, the minimum of 299 FPS is 15% below the average, while at 1440p Medium, the minimum of 200 FPS is 15% below average, and at 4K Medium, the minimum of 113 FPS is 15% below average. This consistent 15% deviation suggests stable frame pacing across resolutions.

The maximum FPS values show similar consistency: 405 FPS at 1080p Medium (15% above average), 270 FPS at 1440p Medium (15% above average), and 153 FPS at 4K Medium (15% above average). This uniform distribution indicates that the combo maintains consistent frame delivery without significant spikes or drops, which is important for a smooth gaming experience.

FAQ

Q: What is the highest average FPS achievable with this combo in Roblox?

A: The highest measured average FPS is 387 at 1920x1080 with Low settings, while the lowest is 95 at 3840x2160 with Ultra settings.

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

A: This combo ranks 1673 out of 3711 tested combos, placing it in the 45th percentile of all tested combinations.

Q: Which resolution provides the best balance between visual quality and performance?

A: The 2560x1440 Medium preset delivers 235 FPS with a minimum of 200 FPS, offering a strong balance of resolution and frame rate.

Q: What is the GPU's average benchmark score and percentile ranking?

A: The AMD Radeon RX 6750 XT has an average benchmark score of 26011 and sits in the 71st percentile of all GPUs.

Q: What is the CPU's single-thread performance score?

A: The Intel Core i5-11400F scores 868 in 3dmark single-thread and 2024 in Cinebench R23 single-core tests.

Q: Does the combo maintain consistent frame times across resolutions?

A: The Medium preset shows a consistent 15% deviation between minimum and maximum FPS across all resolutions, indicating stable frame pacing.