Roblox

Roblox is a sandbox title that rarely stresses high-end hardware, but this pairing of an Intel Core i5-12400F with an AMD Radeon RX 7900 XT produces frame rates that are almost absurdly high across the board. The data shows this combo ranks 423rd out of 1800 tested combinations, placing it in the top 25% of all systems. With 12 measured data points spanning three resolutions and four quality presets, the results reveal a system that is heavily GPU-limited at 4K but becomes progressively more CPU-bound as resolution drops. This is a machine that will run Roblox at refresh rates far beyond what most monitors can display, making the practical bottleneck not the hardware, but the display itself.

FAQ

Q: How does this combo rank among all tested systems for Roblox?

A: The combination ranks 423rd out of 1800 total tested combinations, which places it in the top 23.5% of all systems. This is a strong result, though not top-tier, since Roblox is often more sensitive to single-thread performance than raw GPU power.

Q: What is the highest average FPS recorded in this dataset?

A: The highest average frame rate is 541.4 FPS, achieved at 1920x1080 with Low settings. This indicates the system has enormous headroom for competitive play or high-refresh-rate displays.

Q: What is the lowest average FPS recorded, and under what conditions?

A: The lowest average is 130.3 FPS, recorded at 3840x2160 with Ultra settings. Even at the most demanding settings and resolution, the system never drops below 130 FPS, which is still well above the refresh rate of most gaming monitors.

Q: How much faster is the 1080p Low preset compared to the 4K Ultra preset?

A: The 1080p Low preset delivers 541.4 FPS, which is 4.15 times faster than the 130.3 FPS seen at 4K Ultra. This large gap highlights the significant GPU load increase when moving from 1080p to 4K.

Q: Is the GPU or CPU more likely to be the limiting factor at 1440p?

A: At 2560x1440, the frame rates range from 237.7 FPS (Ultra) to 361.8 FPS (Low), which are extremely high. The CPU's 6 cores and 12 threads, with a boost clock of 4.40 GHz, are likely the primary limiter at this resolution, as the GPU has significant headroom to produce even more frames.

Q: What is the difference in FPS between High and Ultra settings at 4K?

A: At 3840x2160, the High preset yields 161.6 FPS while Ultra drops to 130.3 FPS, a difference of 31.3 FPS or approximately 19.4%. This shows the Ultra preset imposes a meaningful performance penalty over High.

GPU Role

The AMD Radeon RX 7900 XT is a massive piece of silicon, built on the RDNA 3.0 architecture with 57,700 million transistors on a 529 mm² die. It carries 20 GB of GDDR6 memory on a 320-bit bus, delivering 800.0 GB/s of bandwidth. The memory clock runs at 2500 MHz with 20 Gbps effective speed, while the GPU has a base clock of 1387 MHz and a boost clock of 2394 MHz.

In Roblox, this GPU's role is heavily dependent on resolution. At 4K, the card's raw compute power becomes relevant: the FP32 performance of 51.48 TFLOPS and a texture rate of 804.4 GTexel/s drive the High preset to 161.6 FPS. The 192 ROPs and pixel rate of 459.6 GPixel/s are what allow Ultra settings at 4K to still hold 130.3 FPS, which is impressive for a game that is not known for heavy graphical demands.

The GPU's benchmark scores contextualize its performance. The 3DMark Steel Nomad DX12 score of 5623 and a Passmark G3D score of 29009 place it at the 82nd percentile among all GPUs. Its nearest rival is the NVIDIA GeForce RTX 5080 Mobile, with a deltaPct of 0.0, meaning the two are statistically tied in average benchmark score. This indicates the RX 7900 XT is a top-tier card, but the data also shows that in Roblox at lower resolutions, the GPU is underutilized — the gap between 1080p and 4K frame rates is massive, suggesting the card is not the limiting factor at 1080p.

CPU Role

The Intel Core i5-12400F is a 6-core, 12-thread processor based on the Alder Lake architecture, built on a 10 nm process. It has a base clock of 2.50 GHz and a boost clock of 4.40 GHz, with a 65 W TDP. The cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache.

In Roblox, the CPU's single-thread performance is critical. The 3DMark single-thread score of 909 and Cinebench R23 single-core score of 2332 show solid per-core speed. The Passmark single-thread score of 3481 and Geekbench single-core score of 2221 reinforce this. The CPU's overall percentile rank is 77th among all CPUs, with an average benchmark score of 19221, which is virtually identical to its nearest rival, the Intel Core i7-8700K, at a deltaPct of 0.1.

The CPU's influence is most visible at 1080p, where frame rates reach 541.4 FPS on Low settings. These numbers far exceed what the GPU alone would produce if it were the sole bottleneck. The 12 threads help maintain consistent frame pacing, but the data suggests that at 1080p, the CPU is the limiting component. The 3DMark 16-thread score of 5895 and max-thread score of 5912 indicate that multithreaded scaling is present but not dramatic, which is typical for a game like Roblox that relies heavily on a few primary threads.

Measured FPS Breakdown

At 1920x1080, the results are exceptionally high across all presets. The Low preset hits 541.4 FPS, Medium drops slightly to 493.2 FPS, and High delivers 435.2 FPS. The Ultra preset falls to 354 FPS, which is still higher than most 240 Hz monitors can display. The difference between Low and Ultra at 1080p is 187.4 FPS, or 34.6%, showing that even the most demanding preset does not significantly challenge this hardware.

At 2560x1440, the frame rates remain very high but show a clearer separation between presets. Low settings produce 361.8 FPS, Medium gives 326.5 FPS, High yields 291.8 FPS, and Ultra drops to 237.7 FPS. The gap between Low and Ultra here is 124.1 FPS, which is a 34.3% reduction. This resolution is likely the sweet spot for this combo, as it still exceeds the refresh rate of all but the most extreme gaming monitors.

At 3840x2160, the GPU starts to feel the load. Low settings deliver 203.5 FPS, Medium produces 183.7 FPS, High drops to 161.6 FPS, and Ultra falls to 130.3 FPS. The span between Low and Ultra is 73.2 FPS, or 36.0%. Even at 4K Ultra, the system never goes below 130 FPS, which means it can drive a 120 Hz 4K display without issue.

Resolution Scaling

The data shows a clear and predictable pattern: frame rates drop as resolution increases, but the rate of decline is steeper than what pure pixel count would suggest. Moving from 1080p to 1440p on High settings reduces FPS from 435.2 to 291.8, a 32.9% decrease. Moving from 1440p to 4K on High settings reduces FPS from 291.8 to 161.6, a 44.6% decrease.

This non-linear scaling indicates that the limiting component changes with resolution. At 1080p, the CPU is the primary bottleneck — the GPU is capable of producing far more frames than the CPU can feed it, resulting in the 541.4 FPS ceiling on Low. As resolution increases to 4K, the GPU becomes the limiting factor, as evidenced by the 4K Low result of 203.5 FPS versus the 1080p Low result of 541.4 FPS — a 62.4% drop.

The most telling comparison is the Ultra preset scaling: from 354 FPS at 1080p to 237.7 FPS at 1440p (a 32.9% drop), and then to 130.3 FPS at 4K (a 45.2% drop from 1440p). This suggests that at 4K Ultra, the GPU is fully utilized and the CPU has enough headroom to keep up. The 800.0 GB/s memory bandwidth and 20 GB VRAM are sufficient for Roblox's needs, so the scaling is driven almost entirely by compute load.

Settings Recommendations

For 1080p displays, the data shows that even the Ultra preset at 354 FPS exceeds the capabilities of any mainstream monitor. The Low preset at 541.4 FPS is excessive for most users, but the Medium preset at 493.2 FPS offers a good balance if you have a 480 Hz monitor. For the vast majority of players with 240 Hz or 360 Hz displays, the High preset at 435.2 FPS is the recommended choice, as it provides visual quality without any practical frame rate penalty.

At 1440p, the High preset at 291.8 FPS is the optimal choice for 240 Hz monitors, while the Ultra preset at 237.7 FPS still clears the 240 Hz threshold. The Medium preset at 326.5 FPS is suitable for 300 Hz panels, but the visual difference between Medium and High is often noticeable in Roblox's blocky aesthetic. The Low preset at 361.8 FPS offers no real benefit unless you are chasing maximum frame rates for competitive play, where the extra 70 FPS over Medium could matter.

For 4K displays, the Low preset at 203.5 FPS is sufficient for 120 Hz monitors, and the Medium preset at 183.7 FPS also clears that bar. The High preset at 161.6 FPS is the best overall choice for 4K, as it provides a 19.4% improvement over Ultra while still maintaining a frame rate that exceeds most 4K display refresh rates. The Ultra preset at 130.3 FPS is only recommended for users with 120 Hz displays who prioritize maximum visual fidelity over the slight performance dip. In summary, the measured data suggests that High settings at any resolution provide the best combination of visual quality and frame rate headroom for this hardware combination.