Roblox

Resolution Scaling

Roblox's performance profile reveals an unusual scaling pattern with this Intel Core i5-12400 + AMD Radeon RX 9070 XT combination. At 1080p Low, the combo produces 500.1 FPS. Moving to 1440p Low drops that to 337.1 FPS — a 32.6% reduction. The 4K Low result of 190.6 FPS represents another 43.5% cut from 1440p. This steep scaling curve indicates that resolution directly impacts the rendering workload, but the absolute numbers remain high enough that even 4K Ultra stays above 120 FPS.

The gap between settings presets widens as resolution increases. At 1080p, the spread from Low (500.1 FPS) to Ultra (329.2 FPS) is 170.9 FPS. At 1440p, that spread shrinks to 118.0 FPS (337.1 Low vs 219.1 Ultra). At 4K, the spread narrows further to 65.9 FPS (190.6 Low vs 124.7 Ultra). This compression suggests that at higher resolutions, the GPU's pixel throughput becomes the dominant constraint, while at 1080p, other bottlenecks limit how much the Low preset can exploit.

Interestingly, the frame rate difference between Medium and High is relatively small across all resolutions. At 4K, Medium delivers 171.7 FPS while High achieves 151.2 FPS — only a 20.5 FPS gap. The jump from High to Ultra is more punishing: 124.7 FPS at 4K Ultra versus 151.2 FPS at 4K High. This pattern repeats at 1440p and 1080p, indicating that Ultra settings impose disproportionately heavy rendering costs compared to the visual gains from High.

The 1080p results show the CPU beginning to matter. With 500.1 FPS at Low settings, the i5-12400's single-thread performance becomes a factor. The measured 1080p Medium result of 456.7 FPS and 1080p High of 402.2 FPS still show headroom, but the scaling from Low to Medium (43.4 FPS drop) versus Medium to High (54.5 FPS drop) suggests diminishing returns as settings climb.

GPU Role

The Radeon RX 9070 XT brings 16 GB of GDDR6 memory on a 256-bit bus, yielding 644.6 GB/s of bandwidth. For Roblox, this memory configuration is far beyond what the game's typical asset sizes require, but it ensures there are no bandwidth-related stutters even at 4K Ultra. The GPU's 4096 shading units and 128 ROPs provide substantial raw throughput, reflected in the 380.2 GPixel/s pixel rate.

Clock behavior matters here. The GPU has a base clock of 1660 MHz, a game clock of 2400 MHz, and a boost clock of 2970 MHz. The large delta between base and boost — 1310 MHz — indicates that the card can aggressively scale its frequency under load. In a lightweight game like Roblox, where scenes may not fully stress the GPU, the card likely spends more time near its boost ceiling, which helps explain why even 4K Ultra stays above 120 FPS.

The 48.66 TFLOPS of FP32 compute is excessive for Roblox's blocky geometry and simple shaders. The game's rendering workload is more about draw calls and object culling than heavy math. Still, the GPU's 760.3 GTexel/s texture rate handles any texture filtering demands with ease. The 64 RT cores are effectively idle in Roblox, as the game does not use ray-traced effects.

The GPU's benchmark standing places it at the 82nd percentile among all GPUs. Its nearest rivals in the database include the AMD Radeon Pro 575 (0.1% lower score), NVIDIA RTX A500 Mobile (0.2% higher), and AMD Radeon RX Vega 64 (0.6% lower). These deltas are tiny, meaning the RX 9070 XT sits in a competitive cluster where small benchmark variations determine rank. For Roblox specifically, this GPU is overqualified — the game's measured FPS figures indicate that the 9070 XT is never the limiting factor, even at 4K Ultra with 124.7 FPS.

Settings Recommendations

The measured data points toward High as the optimal balance for most users. At 1080p High, the combo produces 402.2 FPS; at 1440p High, 268.7 FPS; and at 4K High, 151.2 FPS. These numbers are all comfortably above typical display refresh rates. The gap from High to Ultra costs roughly 18% performance at 1080p (402.2 to 329.2 FPS), 18.4% at 1440p (268.7 to 219.1 FPS), and 17.5% at 4K (151.2 to 124.7 FPS). That consistent ~18% penalty buys visual improvements that many players may not notice in Roblox's stylized environments.

Medium settings offer a modest boost over High: 456.7 FPS at 1080p, 302.8 FPS at 1440p, and 171.7 FPS at 4K. The improvement over High is roughly 13-14% across resolutions. If the display runs at 144Hz or lower, Medium provides enough headroom to avoid any frame drops while keeping the game looking reasonably polished. Low settings push to 500.1 FPS at 1080p and 337.1 FPS at 1440p, but the visual downgrade is substantial for only marginal gains over Medium.

For competitive play where every frame counts, Low at 1440p (337.1 FPS) or 1080p (500.1 FPS) makes sense. For general play, High at any resolution delivers smooth performance without the Ultra penalty. The Ultra preset's 124.7 FPS at 4K is still playable, but the 17.5% cost over High for marginal visual improvements makes it hard to recommend. The data suggests that High is the sweet spot, with Medium as a fallback for higher refresh rate displays.

How This Combo Ranks

This specific CPU-GPU pairing ranks 490th out of 1800 tested combinations for Roblox. That places it in the top 27.2% of all combos in the database. Given that Roblox is not a demanding title, this ranking reflects that the combo is strong but not elite — many other pairings achieve similar or better results, likely because Roblox's engine favors high single-thread CPU performance and the RX 9070 XT's GPU power is somewhat wasted.

The rank of 490 out of 1800 indicates that roughly three-quarters of tested combos perform worse in Roblox. However, the fact that this pairing with a top-tier GPU and a solid mid-range CPU does not crack the top 400 suggests that Roblox's performance is more dependent on other factors. The i5-12400's single-thread score of 910 in 3DMark and 3456 in Passmark single-thread tests are respectable, but not class-leading.

Compared to the GPU's overall standing (82nd percentile among all GPUs) and the CPU's standing (77th percentile among all CPUs), the combo's 490th rank out of 1800 (72.8th percentile) shows slight underperformance relative to what each component achieves individually. This gap indicates that Roblox's engine does not fully utilize the RX 9070 XT's capabilities, and the pairing's rank is held back by the CPU's thread scheduling in a game that is largely single-thread bound.

CPU Role

The Intel Core i5-12400 provides 6 cores and 12 threads, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. This Alder Lake-S chip has 18 MB of shared L3 cache and an 80 KB L1 cache per core. For Roblox, the single-thread performance is the critical factor. The CPU's 3DMark single-thread score of 910 and Passmark single-thread score of 3456 indicate strong per-core capability. The Cinebench R23 single-core score of 2249 confirms this.

Roblox's engine is known for relying heavily on a single main thread for game logic and physics. The i5-12400's 4.40 GHz boost clock helps here, but the architecture also matters. Being 10 nm Alder Lake, the chip delivers solid IPC. Its nearest CPU rivals in the database are the Intel Core i7-9700 (0.1% higher average score), Intel Core i7-8700 (0.2% lower), and AMD Ryzen Threadripper PRO 5995WX (0.4% lower). The i5-12400 essentially matches these chips in overall benchmark scores, which is notable given the Threadripper's extreme core count.

The multi-thread scores show the i5-12400's limits: Cinebench R23 multi-core of 15935 and 3DMark max-threads of 5890. In a game like Roblox that uses few threads, the multi-core capabilities are largely irrelevant. The 12 threads help with background tasks and any secondary game threads, but the measured FPS figures suggest that the CPU's single-thread performance is sufficient to feed the RX 9070 XT at 1080p, where the combo hits 500.1 FPS on Low. The 77th percentile ranking among all CPUs reflects a balanced performer that is neither a bottleneck nor a standout in Roblox.

Measured FPS Breakdown

At 1920x1080, the combo delivers 500.1 FPS on Low, 456.7 FPS on Medium, 402.2 FPS on High, and 329.2 FPS on Ultra. The step from Low to Medium costs 43.4 FPS (8.7%), Medium to High costs 54.5 FPS (11.9%), and High to Ultra costs 73.0 FPS (18.1%). The increasing cost per tier suggests that each higher preset adds progressively more rendering work.

At 2560x1440, results are 337.1 FPS on Low, 302.8 FPS on Medium, 268.7 FPS on High, and 219.1 FPS on Ultra. The resolution jump from 1080p to 1440p reduces performance by 32.6% on Low, 33.7% on Medium, 33.2% on High, and 33.4% on Ultra. This consistent ~33% penalty across all settings indicates that resolution scaling is independent of the graphics preset — the GPU's rendering pipeline handles the extra pixels uniformly regardless of visual complexity.

At 3840x2160, the numbers are 190.6 FPS on Low, 171.7 FPS on Medium, 151.2 FPS on High, and 124.7 FPS on Ultra. The 1440p-to-4K transition costs 43.4% on Low, 43.3% on Medium, 43.7% on High, and 43.1% on Ultra. This larger penalty (43% vs 33%) reflects the 2.25x pixel count increase from 1440p to 4K, which is more demanding than the 1.78x increase from 1080p to 1440p.

The full scaling picture: from 1080p Low to 4K Ultra, performance drops from 500.1 FPS to 124.7 FPS — a 75.1% reduction. Every measured configuration stays above 120 FPS, meaning this combo never drops below smooth gameplay thresholds in Roblox. The data confirms that the RX 9070 XT is the dominant factor in these results, with the i5-12400 providing enough CPU headroom to avoid limiting even at 1080p Low.