Roblox

The Intel Core i5-12400 paired with the NVIDIA GeForce RTX 3080 Ti delivers exceptional performance in Roblox, a Sandbox title released on 2006-08-31. The measured FPS data reveals a system that is overwhelmingly GPU-bound at lower resolutions, transitioning to a more balanced workload as resolution increases. Across all settings at 1080p, the combination produces frame rates well above 300 FPS, indicating that the CPU is the primary limiting factor at this resolution. The data shows a clear progression: at 1080p Low, the system achieves 502.7 FPS, which drops to 327.9 FPS at Ultra settings. This pattern persists at 1440p, where the average FPS ranges from 334.4 at Low to 217.2 at Ultra. Only at 4K does the GPU begin to assert its dominance, with frame rates falling to 149.9 FPS at High and 124.4 FPS at Ultra. The benchmark results indicate that this combination is positioned at rank 468 out of 1800 tested combos in this game, placing it in the top 26% of all configurations.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals critical insights about which component is constraining performance. At 1080p Low, the system produces 502.7 FPS, but this drops to 193.2 FPS at 4K Low — a reduction of 309.5 FPS, or approximately 61.5%. This steep decline indicates that the RTX 3080 Ti is the limiting factor at 4K, as the CPU cannot fully saturate the GPU's capabilities at lower resolutions. The pattern holds across all settings: at High settings, the system drops from 401.6 FPS at 1080p to 149.9 FPS at 4K, a 62.7% reduction. At Medium settings, the drop is from 457.2 FPS to 172.2 FPS, representing a 62.3% decrease. The Ultra preset shows the smallest relative drop, falling from 327.9 FPS to 124.4 FPS, a 62.1% reduction.

The scaling behavior suggests that at 1080p and 1440p, the CPU is the primary bottleneck. The i5-12400, with its 6 cores and 12 threads, can push frame rates to extreme levels, but the GPU is not fully utilized until 4K resolution. At 1440p, the system still achieves over 217 FPS at Ultra settings, indicating that the CPU is still keeping pace with the GPU's output. The transition to 4K marks the point where the RTX 3080 Ti's 12 GB of GDDR6X memory and 912.4 GB/s bandwidth become the dominant factor, as the increased pixel count demands more from the GPU's shading units and ROPs. The data shows that this combination is best suited for high-refresh-rate gaming at 1440p, where it can maintain frame rates above 200 FPS even at the highest settings.

CPU Role

The Intel Core i5-12400 is a 6-core, 12-thread processor from the Core 12th Gen series, built on the Alder Lake architecture using a 10 nm process node. It operates with a base clock of 2.50 GHz and a boost clock of 4.40 GHz, with a TDP of 65 W. The CPU's cache hierarchy includes 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 18 MB of shared L3 cache. Its benchmark scores indicate strong single-threaded performance, with a 3dmark_single_thread score of 910 and a passmark_single_thread score of 3456. Multi-threaded performance is also robust, with a cinebench_r23_multicore score of 15935 and a passmark_multithread score of 18747.

In Roblox, the CPU's role is most pronounced at 1080p and 1440p resolutions, where frame rates exceed 300 FPS. The game's threading model appears to scale well with the i5-12400's 12 threads, as evidenced by the high frame rates at Low settings. The 3dmark_16_threads score of 5873 and 3dmark_max_threads score of 5890 indicate that the processor can handle substantial multi-threaded workloads, which is beneficial for Roblox's physics and scripting systems. Comparing to nearest rivals, the i5-12400's avgBenchmarkScore of 19850 is nearly identical to the Intel Core i7-9700 (19831, deltaPct 0.1%) and the Intel Core i7-8700 (19894, deltaPct -0.2%). This places the CPU in the 77th percentile of all CPUs tested, indicating that its performance is above average but not exceptional.

The data suggests that at 1080p, the CPU is the limiting factor, as frame rates do not scale proportionally with GPU settings. At 1080p Low, the system achieves 502.7 FPS, but moving to Ultra only reduces this to 327.9 FPS — a drop of 34.8% despite the increased GPU load. This indicates that the CPU is capable of sustaining high frame rates, but the GPU's output at lower settings is not the bottleneck. The i5-12400's boost clock of 4.40 GHz and single-thread performance are sufficient for Roblox's demanding single-threaded tasks, which is reflected in the high 3dmark_single_thread score of 910.

GPU Role

The NVIDIA GeForce RTX 3080 Ti is a high-end GPU from the GeForce 30-series, based on the Ampere architecture and built on Samsung's 8 nm process node. It features 10240 shading units, 320 TMUs, and 112 ROPs, along with 80 RT cores and 320 tensor cores. The GPU operates at a base clock of 1365 MHz and a boost clock of 1665 MHz, with memory running at 1188 MHz (19 Gbps effective). Its 12 GB of GDDR6X memory is accessed via a 384-bit bus, providing a bandwidth of 912.4 GB/s. The GPU's compute capabilities include 34.10 TFLOPS of FP32 performance and a pixel rate of 186.5 GPixel/s.

In Roblox, the GPU's role becomes increasingly important as resolution increases. At 4K, the GPU is clearly the limiting factor, as frame rates drop significantly across all settings. The 4K High average of 149.9 FPS and 4K Ultra average of 124.4 FPS demonstrate that the GPU is working hard to render the higher pixel count. The RTX 3080 Ti's memory bandwidth of 912.4 GB/s is critical for maintaining performance at 4K, as the game's textures and geometry require substantial memory throughput. The GPU's percentileVsAllGpus of 83 indicates that it performs better than 83% of all GPUs tested, with an avgBenchmarkScore of 41224.

Comparing to nearest rivals, the RTX 3080 Ti's avgBenchmarkScore of 41224 is slightly below the NVIDIA GeForce RTX 3090 (41441, deltaPct -0.5%) and the AMD Radeon Pro 5300 (41610, deltaPct -0.9%). The NVIDIA GeForce RTX 5070 (41687, deltaPct -1.1%) and the NVIDIA Tesla M40 (41897, deltaPct -1.6%) are also close competitors. This places the GPU in a tight performance band, where the differences between models are minimal. The benchmark results indicate that the RTX 3080 Ti's performance is well-suited for Roblox, particularly at 1440p where it can maintain frame rates above 200 FPS at Ultra settings.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of performance across three resolutions and four settings presets. At 1920x1080, the system achieves its highest frame rates: 502.7 FPS at Low settings, 457.2 FPS at Medium, 401.6 FPS at High, and 327.9 FPS at Ultra. These numbers indicate that the CPU is the primary bottleneck at 1080p, as even the most demanding settings cannot push frame rates below 300 FPS. The progression from Low to Ultra shows a consistent decline, with each settings tier reducing performance by approximately 10-15%.

At 2560x1440, the frame rates remain high but begin to reflect the GPU's increased workload. The system achieves 334.4 FPS at Low settings, 305.7 FPS at Medium, 271.5 FPS at High, and 217.2 FPS at Ultra. The drop from 1080p to 1440p is significant, with the Low setting falling by 168.3 FPS (33.5%) and the Ultra setting falling by 110.7 FPS (33.8%). This suggests that the GPU is beginning to play a larger role, but the CPU is still capable of keeping frame rates above 200 FPS at all settings.

At 3840x2160, the GPU becomes the clear limiting factor. The system achieves 193.2 FPS at Low settings, 172.2 FPS at Medium, 149.9 FPS at High, and 124.4 FPS at Ultra. The drop from 1440p to 4K is substantial, with the Low setting falling by 141.2 FPS (42.2%) and the Ultra setting falling by 92.8 FPS (42.7%). This pattern indicates that the RTX 3080 Ti's rendering capabilities are the primary constraint at 4K, as the CPU is no longer able to feed the GPU at a sufficient rate. The 4K Ultra average of 124.4 FPS is still playable, but it represents a significant reduction from the 1080p performance.

How This Combo Ranks

The Intel Core i5-12400 and NVIDIA GeForce RTX 3080 Ti combination is ranked 468 out of 1800 tested combos in Roblox, placing it in the top 26% of all configurations. This ranking is notable given the game's age and the fact that it is a Sandbox title with relatively modest graphics requirements. The high ranking is likely due to the combination of the CPU's strong single-threaded performance and the GPU's high-end capabilities, which allow the system to maintain high frame rates even at 4K resolution.

The combo's ranking of 468 out of 1800 suggests that there are 467 other combinations that perform better in Roblox. Given that the CPU and GPU are both high-end components, the ranking reflects the fact that Roblox is not particularly demanding on either component. The system's performance at 1080p, where it achieves over 400 FPS at High settings, is indicative of a configuration that is well-balanced for this game. The data shows that the combo's performance is consistent across different settings, with no significant bottlenecks at any resolution.

The ranking also highlights the diminishing returns of pairing a high-end GPU with a mid-range CPU. While the RTX 3080 Ti is capable of producing over 500 FPS at 1080p Low, the i5-12400's 6-core, 12-thread configuration is sufficient to keep up with the GPU's output. The system's performance at 4K Ultra, where it achieves 124.4 FPS, demonstrates that the GPU is the limiting factor at higher resolutions, but the CPU still provides adequate support. Overall, the combo's rank of 468 out of 1800 indicates that it is a strong performer in Roblox, though not the absolute best configuration available.

FAQ

Q: What is the highest average FPS achieved by this combo in Roblox?

A: The highest average FPS recorded is 502.7 FPS at 1920x1080 resolution with Low settings.

Q: At what resolution does the GPU become the primary limiting factor?

A: The data shows that at 3840x2160 (4K) resolution, the GPU becomes the clear limiting factor, with frame rates dropping to 149.9 FPS at High settings and 124.4 FPS at Ultra settings.

Q: How does this combo's ranking compare to other tested configurations?

A: The combo is ranked 468 out of 1800 tested combos in Roblox, placing it in the top 26% of all configurations.

Q: What is the difference in performance between 1080p and 4K at Ultra settings?

A: At Ultra settings, the system achieves 327.9 FPS at 1080p and 124.4 FPS at 4K, representing a reduction of 203.5 FPS or approximately 62.1%.

Q: How does the CPU's benchmark score compare to its nearest rivals?

A: The i5-12400's avgBenchmarkScore of 19850 is 0.1% higher than the Intel Core i7-9700 (19831) and 0.2% lower than the Intel Core i7-8700 (19894).

Q: What is the memory bandwidth of the RTX 3080 Ti?

A: The GPU has a memory bandwidth of 912.4 GB/s, accessed via a 384-bit bus with 12 GB of GDDR6X memory.