Roblox

CPU Role — cores, clocks, and how they relate to this game's results

The Intel Core i5-12400F is a 6-core, 12-thread processor based on the Alder Lake-S architecture, built on Intel's 10 nm process. It operates with a base clock of 2.50 GHz and boosts up to 4.40 GHz, with a 65 W TDP. The CPU's cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache. It supports both DDR4 and DDR5 memory in a dual-channel configuration, and its PCIe connection is Gen 5 with 20 lanes from the CPU.

In synthetic benchmarks, the i5-12400F shows a clear strength in multithreaded workloads. It scores 16,518 in Cinebench R23 multicore, 6,937 in Cinebench R20 multicore, and 1,664 in Cinebench R15 multicore. Single-thread performance is more modest, with a Cinebench R23 single-core score of 2,332 and a Geekbench single-core score of 2,221. The 3DMark results follow a similar pattern: 5,895 for 16 threads, 5,912 for max threads, but only 909 for single-thread. This suggests the CPU can handle many simultaneous tasks but per-core performance is not exceptional.

In Roblox, the gameplay logic, physics, and scripting often rely on a few threads rather than scaling perfectly across all 12. The benchmark results here show that at 1080p Low settings, the combo achieves 146.1 FPS, which is more than enough to saturate most displays. The CPU's 3DMark 2-thread score of 1,699 and 4-thread score of 3,067 indicate that even light-threaded workloads are handled competently. The processor ranks in the 77th percentile among all CPUs, with an average benchmark score of 19,221. Its nearest rival, the Intel Core i7-8700K, scores 19,210, a delta of just 0.1%, meaning the two are effectively interchangeable in raw compute. The AMD Ryzen 5 7533HS is 0.7% faster, and the AMD EPYC 7773X is 1.3% slower, placing the i5-12400F in a tightly contested mid-range tier.

GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce GTX 1650 is a Turing-architecture GPU built on TSMC's 12 nm process, with 4,700 million transistors on a 200 mm² die. It has 4 GB of GDDR5 memory on a 128-bit bus, delivering 128.1 GB/s of bandwidth. The GPU runs at a base clock of 1485 MHz and boosts to 1665 MHz, with memory clocked at 2001 MHz (8 Gbps effective). It features 896 shading units, 56 texture mapping units, and 32 ROPs, producing a pixel rate of 53.28 GPixel/s and a texture rate of 93.24 GTexel/s. The FP32 performance is 2.984 TFLOPS, and the card draws 75 W with no external power connectors.

In Roblox, the GPU is responsible for rendering blocky worlds, lighting, and effects. The measured FPS across settings and resolutions reveals that the GTX 1650 is often the limiting factor. At 1080p Low, the combo hits 146.1 FPS, but at 1080p Ultra, it drops to 97.3 FPS—a 33% reduction. The GPU's PassMark G3D score of 7,880 places it in the 43rd percentile of all GPUs, with an average benchmark score of 8,713. Its nearest rival, the NVIDIA GeForce RTX 3050 A Mobile, scores 8,746, a delta of -0.4%, meaning the GTX 1650 is nearly identical in that metric. The AMD Radeon 550X is 0.4% faster, and the AMD Radeon Pro WX 5100 is 0.5% faster, but the differences are within noise. The GTX 1650's 4 GB VRAM is sufficient for Roblox, which is not a graphics-heavy title, but the card's raw throughput limits high-refresh-rate performance at higher settings.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data shows a clear scaling trend as resolution increases. At 1080p High, the combo averages 117.9 FPS. Moving to 1440p High drops the average to 81.9 FPS—a 30.5% decrease. At 4K High, the average falls to 47.2 FPS, another 42.4% decrease from 1440p. This pattern repeats across all settings. For Low settings, 1080p yields 146.1 FPS, 1440p yields 100.3 FPS (a 31.4% drop), and 4K yields 57.2 FPS (a 43.0% drop from 1440p). Medium settings show 134.6 FPS at 1080p, 91.7 FPS at 1440p (a 31.9% drop), and 50.8 FPS at 4K (a 44.6% drop from 1440p). Ultra settings follow suit: 97.3 FPS at 1080p, 64.3 FPS at 1440p (a 33.9% drop), and 36.8 FPS at 4K (a 42.8% drop from 1440p).

The consistent ~30% drop from 1080p to 1440p and ~40-45% drop from 1440p to 4K indicates that the GPU is the primary bottleneck as pixel count increases. The GTX 1650's 128.1 GB/s memory bandwidth and 2.984 TFLOPS of compute are simply not enough to maintain high frame rates at 4K. The i5-12400F, with its strong multithreaded scores, is not the constraint here—even at 4K Ultra, the CPU has headroom to feed the GPU. The data shows that Roblox is GPU-bound at higher resolutions, while at 1080p Low, the CPU's 2-thread performance (3DMark score of 1,699) is sufficient to push the frame rate above 140 FPS.

FAQ

Q: What is the maximum FPS this combo achieves in Roblox at 1080p?

A: The highest measured average FPS is 146.1 at 1080p with Low settings. At 1080p Ultra, the average is 97.3 FPS.

Q: How does the i5-12400F compare to its nearest CPU rival?

A: The i5-12400F scores 19,221 on average, which is 0.1% higher than the Intel Core i7-8700K (19,210). The AMD Ryzen 5 7533HS is 0.7% faster, and the AMD EPYC 7773X is 1.3% slower.

Q: Does the GTX 1650 have enough VRAM for Roblox at 4K?

A: The card has 4 GB of GDDR5 memory. At 4K Ultra, the combo averages 36.8 FPS, indicating the GPU's compute limit is hit before VRAM capacity becomes an issue. The 4 GB is sufficient for Roblox's textures.

Q: What is the FPS difference between Low and Ultra settings at 1440p?

A: At 1440p Low, the average is 100.3 FPS. At 1440p Ultra, it drops to 64.3 FPS, a reduction of 36.0%.

Q: Is the GTX 1650 a better performer than the RTX 3050 A Mobile?

A: The GTX 1650 has an average benchmark score of 8,713, while the RTX 3050 A Mobile scores 8,746. The delta is -0.4%, meaning the RTX 3050 A Mobile is marginally faster, but the difference is negligible.

Q: How does the combo rank among all tested combinations in Roblox?

A: The combo ranks 1,713 out of 1,800 tested combos, placing it in the bottom 5% of all configurations for this game.

Settings Recommendations

The data shows that the best experience depends on the target resolution. At 1080p, all settings are playable, with Low hitting 146.1 FPS and Ultra still reaching 97.3 FPS. For competitive play or high refresh-rate monitors, Low or Medium settings (134.6 FPS) are recommended to maximize frame rates. Medium offers a 13.4% FPS advantage over High (117.9 FPS), while Ultra drops to 97.3 FPS—a 17.5% reduction from Medium.

At 1440p, the choice becomes more critical. Low settings yield 100.3 FPS, which is smooth, but Ultra drops to 64.3 FPS, which may feel less fluid on high-refresh displays. Medium (91.7 FPS) provides a good balance, being 9.4% faster than High (81.9 FPS) and 29.9% faster than Ultra. If visual fidelity is the priority, High is acceptable, but Medium is the sweet spot for maintaining over 90 FPS.

At 4K, even Low settings only reach 57.2 FPS, and Ultra falls to 36.8 FPS. The GPU is simply not capable of delivering high frame rates at this resolution. Low is the only setting that approaches 60 FPS, and even it falls short. For a consistent experience, 1080p Medium or 1440p Low are the recommended presets. The data suggests that chasing Ultra settings provides diminishing returns, as the FPS penalty is severe—at 4K, Ultra is 35.7% slower than Low.

Measured FPS Breakdown

At 1920x1080, the combo delivers its best performance. Low settings produce an average of 146.1 FPS, Medium yields 134.6 FPS, High drops to 117.9 FPS, and Ultra bottoms out at 97.3 FPS. The spread from Low to Ultra is 48.8 FPS, or 33.4% of the Low value. Every step up in settings costs a meaningful chunk of performance, with the largest single step being from High to Ultra (20.6 FPS drop).

At 2560x1440, the averages are 100.3 FPS (Low), 91.7 FPS (Medium), 81.9 FPS (High), and 64.3 FPS (Ultra). The drop from Low to Ultra is 36.0 FPS, a 35.9% reduction. The gap between High and Ultra is 17.6 FPS, which is the largest step, while Low to Medium is only 8.6 FPS. This suggests that Medium is nearly as fast as Low, making it an efficient choice.

At 3840x2160, the averages are 57.2 FPS (Low), 50.8 FPS (Medium), 47.2 FPS (High), and 36.8 FPS (Ultra). The difference between Low and High is 10.0 FPS, and Ultra is 20.4 FPS slower than Low. None of the settings reach 60 FPS, and Ultra is below 40 FPS, indicating that 4K is only marginally playable on this hardware. The data shows a consistent pattern: each resolution increase roughly halves the headroom, and each settings increase costs a similar percentage of FPS.

How This Combo Ranks

The Intel Core i5-12400F + NVIDIA GeForce GTX 1650 combination ranks 1,713 out of 1,800 tested combos in Roblox, placing it in the 5th percentile of all configurations. This is a low ranking, but it reflects the age and tier of the components. The CPU itself is in the 77th percentile among all CPUs, but the GPU is only in the 43rd percentile among GPUs. The combo's ranking is dragged down by the GTX 1650, which is an end-of-life product with limited compute power.

The data shows that this combo is not designed for high-end gaming. Its measured FPS at 1080p is respectable—over 97 FPS at Ultra—but at 4K, it struggles to maintain playable frame rates. The ranking of 1,713 out of 1,800 suggests that most other tested combinations outperform it, likely due to more powerful GPUs. However, the i5-12400F's strong multithreaded scores (Cinebench R23 multicore of 16,518) mean that the CPU is not the bottleneck in Roblox; the GPU's 2.984 TFLOPS of FP32 performance is the limiting factor. For users with this combo, the benchmark results indicate that 1080p Medium or Low settings are the optimal configuration, as they deliver the highest frame rates without sacrificing too much visual quality. The combo's low rank is a direct consequence of the GPU's age, not the CPU's capability.