Roblox

Resolution Scaling

The measured FPS data for Roblox on this Intel Core i5-12400 + AMD Radeon RX 570 combination reveals a clear pattern of performance degradation as resolution increases. At 1920x1080 with Low settings, the system achieves 146.5 FPS average. Moving to 2560x1440 Low drops that to 97.7 FPS, a reduction of approximately 33%. At 3840x2160 Low, the average falls to 54.2 FPS, which is roughly 63% below the 1080p Low figure.

This scaling behavior indicates that the limiting component shifts with resolution. At 1080p, the frame rates are high enough (96.7 to 146.5 FPS depending on settings) that the CPU's 6 cores and 12 threads are likely providing sufficient throughput, while the GPU's 4 GB GDDR5 memory and 224.0 GB/s bandwidth become the bottleneck as pixel count rises. The gap between Low and Ultra settings widens progressively: at 1080p, the difference between Low (146.5 FPS) and Ultra (96.7 FPS) is 49.8 FPS; at 1440p, Low (97.7) versus Ultra (67.7) is 30.0 FPS; at 4K, Low (54.2) versus Ultra (38.7) is only 15.5 FPS. The shrinking delta at higher resolutions suggests that both cores and memory bandwidth are being saturated, leaving less headroom for settings-based variation.

The most telling metric is the 4K Ultra result of 38.7 FPS, which falls below the 60 FPS threshold commonly associated with smooth gameplay. Even at 4K High, the 47.1 FPS average indicates that this combination struggles at the highest resolution regardless of settings. The data shows a system that is comfortable at 1080p, acceptable at 1440p, but marginal at 4K.

GPU Role

The AMD Radeon RX 570 operates with a base clock of 1168 MHz and a boost clock of 1244 MHz, built on the GCN 4.0 architecture with 2048 shading units, 128 texture mapping units, and 32 render output units. The 4 GB GDDR5 memory runs at 1750 MHz (7 Gbps effective) across a 256-bit bus, yielding 224.0 GB/s bandwidth. These specifications produce a pixel rate of 39.81 GPixel/s and a texture rate of 159.2 GTexel/s, with FP32 performance of 5.095 TFLOPS.

In Roblox, the GPU's role becomes more pronounced as resolution increases. At 1080p, the RX 570's raw throughput is adequate to push frame rates above 100 FPS on Low and Medium settings (146.5 and 135.4 FPS respectively). However, the 4 GB memory capacity appears to be a limiting factor at 3840x2160, where even Low settings yield only 54.2 FPS. The 256-bit memory bus provides substantial bandwidth for a card of this class, but the data suggests that texture-heavy scenes at 4K exceed what the 4 GB frame buffer can efficiently manage.

The GPU's average benchmark score of 30158 places it in the 74th percentile of all GPUs. Its nearest rival, the NVIDIA GeForce RTX 5060, scores 30109 with a deltaPct of 0.2%, indicating near-identical synthetic performance. This parity in synthetic benchmarks does not translate to identical gaming results, as Roblox's engine appears particularly sensitive to memory bandwidth and fill rate—areas where the RX 570's 224.0 GB/s and 39.81 GPixel/s are modest by modern standards. The card's 14 nm process node from GlobalFoundries, with 5,700 million transistors on a 232 mm² die, reflects its 2017-era design, which is now end-of-life.

CPU Role

The Intel Core i5-12400 brings 6 cores and 12 threads from the Alder Lake-S architecture, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. The 18 MB shared L3 cache, along with 80 KB L1 and 1.25 MB L2 per core, provides ample data locality for game workloads. Its benchmark results show strong multithreaded performance: Cinebench R23 multicore reaches 15935, while single-core hits 2249. The CPU's average benchmark score of 19850 places it in the 77th percentile of all CPUs.

In Roblox, the CPU's influence is most visible at lower resolutions where the GPU is less stressed. At 1080p Low, the 146.5 FPS result suggests the i5-12400's single-thread performance (3dmark single-thread score of 910, Passmark single-thread of 3456) is sufficient to feed the GPU adequately. The 3dmark 4-thread score of 3012 and 8-thread score of 4745 indicate that the CPU can handle multiple game threads, which is relevant for Roblox's physics and scripting workloads. However, the data shows diminishing returns: at 4K, the CPU's contribution is masked by GPU limitations, as frame rates across all settings cluster between 38.7 and 54.2 FPS.

The i5-12400's nearest rivals include the Intel Core i7-9700 (avgScore 19831, deltaPct 0.1%) and Intel Core i7-8700 (avgScore 19894, deltaPct -0.2%). These near-identical scores suggest that the i5-12400's 10 nm process and newer architecture provide performance comparable to older i7 parts, but with 6 cores versus 8 in the i7-9700. For Roblox specifically, where the game is not heavily multithreaded, the i5-12400's strong single-core performance (Cinebench R23 single-core 2249) is more relevant than its multicore capability. The CPU's 65 W TDP and support for DDR4 and DDR5 memory make it a flexible platform choice, though the measured FPS data does not indicate memory type as a variable in these results.

FAQ

Q: What is the best resolution for this combo in Roblox?

A: 1920x1080 is clearly optimal. All settings at 1080p produce frame rates above 96 FPS, with Low at 146.5 FPS and Medium at 135.4 FPS.

Q: Can this system handle 4K Roblox?

A: Marginally. The 4K results range from 54.2 FPS on Low to 38.7 FPS on Ultra. High settings yield 47.1 FPS, which is below the 60 FPS threshold for smooth play.

Q: How does the CPU compare to its nearest rival in synthetic benchmarks?

A: The i5-12400 scores 19850 on average, which is 0.1% ahead of the Intel Core i7-9700 (19831) and 0.2% behind the Intel Core i7-8700 (19894).

Q: Is the GPU or CPU the bottleneck at 1440p?

A: The data suggests GPU limitation. The 1440p results (67.7 to 97.7 FPS) show less than 50% variation across settings, indicating the RX 570's memory bandwidth is the primary constraint rather than CPU throughput.

Q: What is the GPU's percentile ranking?

A: The AMD Radeon RX 570 is in the 74th percentile of all GPUs, with an average benchmark score of 30158.

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

A: It ranks 1711 out of 1800 tested combos for Roblox, placing it in the bottom 5% of all systems.

How This Combo Ranks

The Intel Core i5-12400 + AMD Radeon RX 570 combination ranks 1711 out of 1800 tested combos for Roblox. This places it in the 1711th position, meaning only 89 combos perform worse. The rank reflects the system's overall capability in this specific game, which is surprising given the CPU's 77th percentile and GPU's 74th percentile rankings individually. The discrepancy suggests that Roblox's engine does not scale well with this particular pairing, or that the game's requirements favor other hardware configurations.

The data indicates that while each component performs adequately in isolation, their combination produces suboptimal results in Roblox. The CPU's 6 cores and 12 threads are sufficient, and the GPU's 4 GB memory and 224.0 GB/s bandwidth are mid-pack, yet the combination ranks in the bottom 5% of all tested systems. This suggests that Roblox may be sensitive to specific architectural features—such as the RX 570's GCN 4.0 design or the i5-12400's Alder Lake memory latency—that are not captured by synthetic benchmarks. The measured FPS data, which shows playable frame rates at 1080p but struggles at 4K, supports the notion that this combo is adequate for lower resolutions but not competitive at higher settings.

Measured FPS Breakdown

1920x1080:

• Low: 146.5 FPS average
• Medium: 135.4 FPS average
• High: 118.3 FPS average
• Ultra: 96.7 FPS average

2560x1440:

• Low: 97.7 FPS average
• Medium: 89.6 FPS average
• High: 82.5 FPS average
• Ultra: 67.7 FPS average

3840x2160:

• Low: 54.2 FPS average
• Medium: 52.4 FPS average
• High: 47.1 FPS average
• Ultra: 38.7 FPS average

The progression across resolutions and settings shows a consistent pattern. At 1080p, all settings exceed 96 FPS, with Low and Medium both above 135 FPS. At 1440p, the range narrows from 67.7 to 97.7 FPS, with Ultra dropping below 70 FPS. At 4K, the entire range falls between 38.7 and 54.2 FPS, with no setting achieving 60 FPS. The delta between Low and Ultra shrinks from 49.8 FPS at 1080p to 30.0 FPS at 1440p and 15.5 FPS at 4K, indicating that resolution scaling overwhelms settings-based optimization at higher pixel counts. The minimum FPS values are not recorded in the data, so the consistency of these averages cannot be fully assessed, but the averages alone indicate a system that is best suited for 1080p gaming with headroom for high settings.