Roblox

Roblox is not typically the first title that comes to mind when discussing high-end hardware, but the measured data for the Intel Core i5-12400 and NVIDIA GeForce RTX 4080 combination reveals a system that is dramatically overqualified for the task. The results show a pairing where the CPU provides a solid foundation of six performance cores and twelve threads, but the GPU’s immense rendering power is what propels frame rates into the hundreds, even at 4K resolution. This analysis breaks down the specific roles of each component, how they scale across resolutions, and what settings provide the most sensible experience for a game that is often considered lightweight.

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

The Intel Core i5-12400 is a 6-core, 12-thread processor from the Alder Lake generation, operating on the Intel Socket 1700 platform. Its base clock of 2.50 GHz can boost up to 4.40 GHz, which is sufficient to keep up with the demands of Roblox’s physics and scripting engine. The processor’s cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and a shared 18 MB L3 cache. This configuration provides the kind of single-threaded responsiveness that Roblox’s blocky world benefits from, though the benchmark data shows that the CPU is rarely the limiting factor in this pairing.

In terms of raw compute, the i5-12400 posts a Cinebench R23 multi-core score of 15989 and a single-core score of 2257. Its 3DMark scores scale predictably from 1692 with 2 threads up to 5890 with max threads, indicating that the six physical cores are being utilized effectively when the workload allows. However, when looking at the nearest rivals, the processor sits in a tight performance band: it is 0.1% slower than the AMD EPYC 7643, 0.3% slower than the Intel Core i7-1355U, and 0.7% slower than the AMD Ryzen AI 5 330. It is 0.9% faster than the Intel Core i3-14100F. This suggests that in a game like Roblox, which often has a single primary simulation thread, the i5-12400’s performance is entirely adequate, and any differences between these CPUs would be imperceptible in practice.

The processor’s overall percentile rank is 72, meaning it outperforms 72% of all CPUs in the database. This is a strong showing for a mainstream desktop chip, and it comfortably handles the game’s logic. The data shows that at 1080p Low settings, the system achieves 643 FPS, which is a massive number that points to the CPU being able to feed the GPU with draw calls as fast as the game engine can produce them. The i5-12400 is not a bottleneck here; it is the engine that keeps the simulation running while the GPU handles the visual output. The 18 MB of shared L3 cache is particularly useful for keeping frequently accessed game assets close to the cores, reducing latency in a title that can be sensitive to memory access times.

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

The NVIDIA GeForce RTX 4080 is the dominant force in this equation. Built on the Ada Lovelace architecture with a 5 nm process from TSMC, this GPU is a behemoth designed for 4K gaming. It features 16 GB of GDDR6X memory on a 256-bit bus, delivering a bandwidth of 716.8 GB/s. The memory operates at an effective speed of 22.4 Gbps, and the GPU’s boost clock is rated at 2505 MHz. With 9728 shading units, 304 texture mapping units, and 112 ROPs, the RTX 4080 is capable of producing an enormous amount of pixel throughput, which is reflected in its 48.74 TFLOPS of FP32 compute power.

In Roblox, the GPU’s massive memory pool is almost entirely unnecessary in terms of capacity — the game’s textures are rarely large enough to stress 16 GB — but the speed of that memory and the raw shader throughput are what drive the extreme frame rates. The measured results show that the RTX 4080 is able to push frame rates that are far beyond what most displays can even show. At 1080p Low, the 643 FPS average is a clear indicator that the GPU is not being taxed; it is working well below its maximum capacity. The GPU’s benchmark scores support this, with a Passmark G3D score of 34457 and a 3DMark Steel Nomad DX12 score of 6567. Its percentile rank of 86 places it above 86% of all GPUs, and it is effectively tied with the RTX 4080 SUPER, which is only 0.1% faster in average benchmark scores.

The GPU’s architecture includes 76 RT cores and 304 tensor cores, which are irrelevant for Roblox’s standard rendering pipeline but are present for other, more demanding titles. For this game, the key takeaway is that the RTX 4080 provides such a high level of rasterization performance that it essentially guarantees a fluid experience at any resolution. The TDP of 320 W is a substantial draw, but the performance on offer justifies the power consumption in a high-end build. The RTX 4080 is not just capable; it is overkill, and the data shows that in Roblox, it is frequently waiting for the CPU to send it more work rather than the other way around.

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

The scaling of frame rates across resolutions is the most revealing aspect of this dataset. Moving from 1080p to 4K shows a predictable decline in performance, but the absolute numbers remain extraordinarily high. At High settings, the system produces 517 FPS at 1080p, which drops to 345 FPS at 1440p, and finally to 195 FPS at 4K. This represents a 62% reduction in frame rate from 1080p to 4K, which is significant but still leaves the game running at nearly 200 FPS at the highest resolution.

The behavior of the Low settings preset is even more telling. At 1080p Low, the system hits 643 FPS. At 1440p Low, it drops to 429 FPS, and at 4K Low, it settles at 243 FPS. The fact that the frame rate drops by about a third from 1080p to 1440p, and then by nearly half from 1440p to 4K, indicates that the GPU is starting to become the limiting factor at higher resolutions. However, even at 4K Low, the 243 FPS result is far above any refresh rate that a typical monitor can display, meaning the CPU is still keeping up with the game’s logic without issue.

The Medium preset shows the most complete data, with minimum and maximum FPS values recorded. At 1080p Medium, the average is 585 FPS with a minimum of 497 FPS and a maximum of 673 FPS. At 1440p Medium, the average drops to 390 FPS with a minimum of 332 FPS. At 4K Medium, the average is 221 FPS with a minimum of 188 FPS and a maximum of 254 FPS. The spread between minimum and maximum FPS is relatively narrow, which suggests that the system is maintaining a steady frame delivery without major hitches or stutters. This is a sign of a well-balanced system where neither component is causing sudden frame-time spikes.

The interpretation is clear: at 1080p and 1440p, the system is heavily CPU-bound, with the GPU capable of rendering frames much faster than the game engine can generate them. At 4K, the GPU begins to take on a more significant role, but it is still not fully saturated. The fact that the Ultra preset only drops the 4K average to 158 FPS — still a very playable number — confirms that this combo is not struggling at any resolution. The limiting component shifts from the CPU at low resolutions to the GPU at 4K, but neither component is ever pushed to its breaking point in this game.

How This Combo Ranks — use comboRankInGame vs other tested combos

Within the database of tested combinations for Roblox, this specific pairing of the Intel Core i5-12400 and NVIDIA GeForce RTX 4080 ranks at position 250 out of 3711 total combinations. This places it in the top 6.7% of all systems tested, which is an impressive result, but not the top tier. The ranking suggests that while the RTX 4080 is a top-tier GPU, the i5-12400 is a mid-range processor, and in a game like Roblox, the CPU can hold the system back from achieving the absolute highest frame rates that a more powerful processor might unlock.

Looking at the CPU’s nearest rivals, the i5-12400 is essentially on par with several other processors, all within a 1% performance band. This means that the combo’s rank is likely determined more by the GPU than the CPU. For instance, pairing the RTX 4080 with a higher-end CPU like a Core i9 or Ryzen 9 would likely push the combo higher up the rankings, as those processors have higher single-threaded performance that could feed the GPU even faster. However, the data shows that this combo is still in the top 250, which is a strong showing.

The GPU’s nearest rivals provide context for its performance level. The RTX 4080 is only 0.1% slower than the RTX 4080 SUPER, meaning that the SUPER variant would not produce a noticeably different result in this game. It is also 1.1% faster than the AMD Radeon Pro W5700X, and 2.6% faster than the AMD Radeon RX 6750 GRE 12 GB. These deltas are small, suggesting that the combo’s rank is not highly sensitive to the specific GPU model as long as it is in this performance class. The rank of 250 out of 3711 indicates that this is a high-end setup, and the measured FPS confirms that it is more than sufficient for Roblox at any setting.

Settings Recommendations — which preset gives the best experience per the measured rows

Given the astronomical frame rates on offer, the choice of settings comes down to prioritising visual quality or raw FPS, but the data shows that you do not have to sacrifice much of either. At 1080p, all presets deliver over 400 FPS, so the recommendation is straightforward: use Ultra to get the best visual fidelity. The 420 FPS average at Ultra is still so high that it exceeds the refresh rate of virtually all gaming monitors, making the lower presets pointless for competitive play at this resolution.

At 1440p, the situation is similar. The Ultra preset delivers 280 FPS, while High delivers 345 FPS and Medium delivers 390 FPS. The difference between Ultra and Medium is 110 FPS, which is a noticeable margin. However, since 280 FPS is still far above the 144 Hz or 165 Hz refresh rates common on 1440p monitors, the Ultra preset is the sensible choice. The visual improvements from Ultra settings are likely to be more impactful than the extra 110 FPS that Medium offers, especially when the frame rate is already so high.

At 4K, the decision becomes more nuanced. The Ultra preset drops to 158 FPS, which is still excellent for a 4K display, many of which are 144 Hz or 120 Hz. The High preset at 195 FPS and Medium at 221 FPS offer more headroom, but they also reduce visual quality. The data shows that at 4K, the Medium preset offers the best balance of visual fidelity and performance, with a 221 FPS average and a minimum of 188 FPS that ensures there are no dips below the refresh rate of most high-end 4K monitors. The Low preset at 243 FPS is only 22 FPS faster than Medium, which is not worth the loss in visual quality. Therefore, for the best experience at 4K, Medium is the recommended preset, while at 1080p and 1440p, Ultra is the clear winner.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The complete set of measured FPS values provides a clear picture of the system’s capabilities. At 1920x1080, the system achieves its highest frame rates. At Low settings, the average FPS is 643. Medium settings produce an average of 585 FPS, with a minimum of 497 FPS and a maximum of 673 FPS. High settings yield a 517 FPS average, and Ultra settings drop the average to 420 FPS. Even the lowest of these numbers — 420 FPS — is far beyond what any standard 1080p monitor can display, so the CPU and GPU are both working well within their limits.

At 2560x1440, the performance remains stellar. Low settings produce a 429 FPS average. Medium settings deliver 390 FPS, with a minimum of 332 FPS and a maximum of 449 FPS. High settings drop to 345 FPS, and Ultra settings settle at 280 FPS. The scaling from Low to Ultra is a 35% reduction in frame rate, which is a moderate penalty for the increased visual complexity. The minimum FPS recorded at Medium is 332 FPS, which is still well above the refresh rate of any 1440p monitor.

At 3840x2160, the system finally begins to show some signs of load, though the numbers remain impressive. Low settings produce a 243 FPS average. Medium settings yield 221 FPS, with a minimum of 188 FPS and a maximum of 254 FPS. High settings drop to 195 FPS, and Ultra settings fall to 158 FPS. The jump from High to Ultra is the most significant, with a 37 FPS drop, suggesting that the Ultra preset applies some heavy effects that tax the GPU more heavily. Even at the lowest measured point — 158 FPS at 4K Ultra — the game is still running at a frame rate that is smooth and responsive. The data confirms that this combo is a top-tier performer in Roblox, with no resolution or settings preset producing a result below 158 FPS.