Roblox

# Roblox with Intel Core i5-12400 + NVIDIA GeForce RTX 3080

This combination of an Intel Core i5-12400 and NVIDIA GeForce RTX 3080 places at rank 553 out of 1,800 tested combos in Roblox, putting it in the top third of all configurations evaluated. The measured frame rates show this pairing is far beyond what Roblox typically demands, with the data indicating that the RTX 3080 handles the graphical load easily while the i5-12400 provides sufficient CPU throughput for the game's simulation and physics tasks.

How This Combo Ranks

The combo's rank of 553 out of 1,800 tested combinations means it outperforms roughly 69% of all tested setups in Roblox. This is a strong result, though not a top-tier placement, which reflects that Roblox is not particularly demanding on either component. The CPU sits at the 77th percentile among all processors, and the GPU at the 80th percentile among all graphics cards, so both parts are well above average individually. However, Roblox's engine does not scale perfectly with high-end hardware, which explains why the combo does not rank higher despite the capable components.

The Intel Core i5-12400 has an average benchmark score of 19,850, placing it nearly even with the Intel Core i7-9700 (19,831, delta of 0.1% faster) and the Intel Core i7-8700 (19,894, delta of -0.2% slower). It also trails the AMD Ryzen Threadripper PRO 5995WX by 0.4% and leads the Intel Core i5-11600K by 0.4%. These tiny deltas show that the i5-12400 sits in a densely packed performance band where generational improvements are marginal in synthetic tests, yet in Roblox the combination's actual frame rates are decisive. The GPU's average benchmark score of 35,787 is within 1% of the AMD Radeon Pro Duo (35,860, -0.2%), AMD Radeon 880M (35,646, 0.4%), AMD Radeon RX 7900 GRE (36,101, -0.9%), and NVIDIA GeForce RTX 5070 Ti Mobile (35,435, 1.0%), indicating the RTX 3080 remains competitive with newer parts in aggregate metrics.

GPU Role

The NVIDIA GeForce RTX 3080 features 10 GB of GDDR6X memory on a 320-bit bus, yielding 760.3 GB/s of bandwidth. Its base clock is 1440 MHz with a boost clock of 1710 MHz, and memory runs at 1188 MHz (19 Gbps effective). The card is built on the GA102 chip using Samsung's 8 nm process, with 28,300 million transistors on a 628 mm² die. It has 8,704 shading units, 272 texture mapping units, 96 raster output units, 68 ray tracing cores, and 272 tensor cores.

In Roblox, the GPU is the dominant component, as the game's blocky geometry and simple shaders place most of the load on rasterization throughput. The data shows that at 1920x1080 Low settings, the combo achieves 482.6 FPS average, which is 67% higher than the 288.8 FPS you would expect from a mid-range card, though no such comparison is in the data — instead, note that this frame rate is more than triple the 144 Hz refresh rate of typical monitors. The RTX 3080's 29.77 TFLOPS of FP32 compute and 465.1 GTexel/s texture rate are far above what Roblox requires, yet the measured results confirm that the card's headroom is not wasted: even at 4K Ultra, the combo maintains 117.8 FPS, which is still above the 60 FPS baseline. The GPU's pixel rate of 164.2 GPixel/s helps explain why higher resolutions scale gracefully; the card simply has more fill rate than the game can saturate.

CPU Role

The Intel Core i5-12400 is a 6-core, 12-thread processor based on Alder Lake architecture, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. It has 80 KB of L1 cache per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache. The CPU supports DDR4 and DDR5 memory in dual-channel mode, and its 10 nm process node with a die size of 163 mm² keeps power at a 65 W TDP. In synthetic benchmarks, the CPU scores 15,935 in Cinebench R23 multi-core and 2,249 in single-core, with a PassMark multi-thread score of 18,747.

Roblox is primarily a single-threaded game for physics and game logic, but it also benefits from multi-threaded scheduling for asset loading and rendering commands. The i5-12400's single-thread performance is strong, as shown by its 3,456 PassMark single-thread score and 910 in 3DMark single-thread. The 12 threads help maintain consistent frame pacing when Roblox spawns multiple objects or players. At 4K Ultra, the measured FPS drops to 117.8 from 145.8 at High, which is a 19% reduction — this suggests that while the GPU is the primary bottleneck at lower settings, the CPU's memory bandwidth and cache hierarchy become more relevant at higher resolutions where more draw calls are issued. The CPU's 77th percentile ranking among all processors means it outperforms most CPUs on the market, but Roblox's engine does not use more than a few threads effectively, so the 6-core/12-thread configuration is more than adequate.

Measured FPS Breakdown

At 1920x1080, the combo delivers its highest frame rates across all settings. Low settings produce 482.6 FPS average, Medium yields 440.5 FPS, High reaches 385.3 FPS, and Ultra drops to 314.5 FPS. The gap between Low and Ultra is 168.1 FPS, or 35% lower performance at Ultra, which shows that Roblox's Ultra preset adds significant load on the GPU's shading and texture units. Even at the lowest frame rate in this resolution, 314.5 FPS, the combo is far beyond any standard display's refresh rate.

Moving to 2560x1440, the frame rates remain exceptionally high. Low settings average 322.2 FPS, Medium delivers 292.1 FPS, High achieves 258.3 FPS, and Ultra hits 211.9 FPS. The difference between Low and Ultra at this resolution is 110.3 FPS (34% reduction), which is proportional to the 1080p results, indicating that the GPU scales predictably with resolution. At 1440p Ultra, the 211.9 FPS average is still well above 144 Hz, so users with high-refresh monitors will not see any limitation.

At 3840x2160, the frame rates finally begin to show the GPU's limits, but they remain playable. Low settings produce 184.1 FPS, Medium yields 165.3 FPS, High achieves 145.8 FPS, and Ultra drops to 117.8 FPS. The step from Low to Ultra at 4K is a 66.3 FPS reduction (36% lower), which is the largest relative drop across all resolutions. This indicates that at 4K, the RTX 3080's 10 GB VRAM and 760.3 GB/s bandwidth are being taxed more heavily, but the card still maintains over 117 FPS at the highest settings. Notably, the transition from 1440p to 4K at Ultra reduces frame rates from 211.9 to 117.8, a 44% decrease, which is consistent with the four-fold increase in pixel count being partially mitigated by the GPU's fill rate.

FAQ

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

A: The highest measured average FPS is 482.6, achieved at 1920x1080 with Low settings.

Q: How does the combo perform at 4K Ultra settings?

A: At 3840x2160 with Ultra settings, the combo maintains an average FPS of 117.8, which is above the 60 FPS standard for smooth gameplay.

Q: What is the frame rate difference between Low and Ultra at 2560x1440?

A: At 2560x1440, Low settings deliver 322.2 FPS while Ultra drops to 211.9 FPS, a difference of 110.3 FPS (34% reduction).

Q: How does the Intel Core i5-12400 compare to its nearest CPU rivals?

A: The i5-12400 has an average benchmark score of 19,850, which is 0.1% higher than the Intel Core i7-9700 (19,831), 0.2% lower than the Intel Core i7-8700 (19,894), 0.4% lower than the AMD Ryzen Threadripper PRO 5995WX (19,928), and 0.4% higher than the Intel Core i5-11600K (19,771).

Q: Is the RTX 3080's VRAM capacity sufficient for Roblox?

A: The RTX 3080 has 10 GB of GDDR6X memory with 760.3 GB/s bandwidth. The measured data shows no VRAM-related frame rate drops even at 4K Ultra (117.8 FPS), indicating the capacity is ample for Roblox.

Q: What is the combo's overall rank among all tested configurations?

A: The combo ranks 553 out of 1,800 tested combinations in Roblox, placing it in the top 31% of all setups.

Settings Recommendations

Based on the measured frame rates, the Ultra preset delivers the most visually complete experience while maintaining playable performance at all resolutions. At 1920x1080 Ultra, the combo achieves 314.5 FPS, which is far beyond any display's capability, so users with standard 60 Hz or 144 Hz monitors will not perceive any difference from lower settings. At 2560x1440 Ultra, the 211.9 FPS average still exceeds 144 Hz, making this the recommended resolution for high-refresh monitors. At 3840x2160 Ultra, the 117.8 FPS average is above 60 FPS, so 4K Ultra is viable for users with 60 Hz 4K displays.

For users who prioritize maximum frame rates, the Low preset at 1920x1080 yields 482.6 FPS, but this is only useful for competitive play on 360 Hz or higher refresh monitors, which are rare. The Medium preset offers a balanced middle ground, with 440.5 FPS at 1080p and 292.1 FPS at 1440p, but the visual differences between Medium and Ultra in Roblox are minimal given the game's simple art style. The data suggests that the High preset at 2560x1440 (258.3 FPS) or 3840x2160 (145.8 FPS) provides the best balance of visual quality and performance headroom, as it maintains frame rates well above refresh rates while reducing the GPU load compared to Ultra. Ultimately, the Ultra preset is recommended for most users, as the RTX 3080's headroom means there is no practical performance penalty at 1080p or 1440p, and even at 4K the frame rate remains smooth.