Roblox

Roblox is a sandbox title that rarely stresses high-end hardware, but the combination of an Intel Core i5-13400F and an AMD Radeon RX 570 still produces a wide spread of performance depending on resolution and settings. The measured data places this specific CPU+GPU combo at rank 3533 out of 3711 tested configurations in this game, indicating that while it is not a top-tier pairing for Roblox, it remains fully capable of delivering playable frame rates across most of the tested scenarios. The CPU is a 10-core, 16-thread Raptor Lake part with a base clock of 2.50 GHz and a boost clock of 4.60 GHz, while the GPU is a Polaris 20 part with 4 GB of GDDR5 memory and a boost clock of 1244 MHz. The benchmark results reveal a system that is heavily GPU-limited at higher resolutions but shows surprising headroom at 1080p, where frame rates climb well past the 100 FPS mark on all but the most demanding preset.

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

The Intel Core i5-13400F plays a supporting role in Roblox, and the data indicates it is rarely the bottleneck in this pairing. This processor features 10 physical cores and 16 threads, a configuration that is far more capable than what a game like Roblox typically requires. Its base clock of 2.50 GHz and boost clock of 4.60 GHz provide substantial single-thread headroom, which is often the limiting factor in physics-heavy sandbox titles. In synthetic benchmarks, the CPU scores 960 in 3dMark single-thread and 3634 in Passmark single-thread, numbers that place it in the 77th percentile of all CPUs. This positions the i5-13400F well above the average desktop processor, and its nearest rivals include the AMD Ryzen 9 6900HS (deltaPct 0%) and the AMD Ryzen 5 5600X3D (deltaPct -0.3%), showing that it trades blows with a mix of mobile and desktop parts.

The multi-threaded results are equally strong, with a Cinebench R23 multi-core score of 22604 and a Passmark multi-thread score of 25032. These numbers suggest the CPU can handle background tasks and game logic without breaking a sweat. However, the measured FPS data shows that at 1080p Low settings, the system hits 148 FPS on average, while at 1080p Ultra it drops to 97 FPS. The fact that the CPU is capable of far higher frame rates — as evidenced by its single-thread performance — combined with the fact that FPS scales downward with increased graphical load, points to the GPU being the primary limiter even at lower settings. At 4K Ultra, the average FPS falls to 36, and at 4K High it is 45 FPS, which is a clear sign that the CPU is not the constraint; if it were, the frame rates would remain relatively flat across resolutions. The i5-13400F’s 20 MB of shared L3 cache and 1.25 MB L2 per core further ensure that data-heavy Roblox worlds do not stall the pipeline.

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

The AMD Radeon RX 570 is the dominant factor in this system’s Roblox performance, and its 4 GB of GDDR5 memory is a critical detail. The GPU runs at a base clock of 1168 MHz and a boost clock of 1244 MHz, with memory clocked at 1750 MHz (7 Gbps effective) across a 256-bit bus, yielding 224.0 GB/s of bandwidth. This is a Polaris 20 chip on a 14 nm process, featuring 2048 shading units, 128 TMUs, and 32 ROPs. The pixel rate is 39.81 GPixel/s and the texture rate is 159.2 GTexel/s, with FP32 compute at 5.095 TFLOPS. In the context of Roblox, which often relies on simple geometry and moderate texture loads, the 4 GB VRAM is sufficient at 1080p but becomes a potential constraint at higher resolutions where texture streaming and draw calls increase.

The GPU’s benchmark scores are modest, with a 3dMark Steel Nomad DX12 score of 880 and a Geekbench Vulkan score of 42752. The RX 570 sits in the 74th percentile of all GPUs, and its nearest rivals include the AMD Radeon RX 6800M (deltaPct -0.4%) and the AMD Radeon RX 470 (deltaPct -0.8%). This indicates that the RX 570 is an older, mid-range part that can still hold its own in a lightweight game like Roblox, but it is clearly not built for high-refresh-rate 4K gaming. The measured data shows a stark drop-off as resolution increases: at 1080p Low the system averages 148 FPS, but at 4K Low it falls to 56 FPS. This 92 FPS difference is almost entirely attributable to the GPU’s fill rate and memory bandwidth limitations. The boost clock of 1244 MHz is modest by modern standards, and the 4 GB VRAM may cause hitches in memory-heavy Roblox experiences, though the min FPS data available (e.g., 43 FPS at 4K Medium) suggests the card does not completely stall.

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

The resolution scaling data paints a clear picture of a GPU-bound system. Moving from 1920x1080 to 3840x2160 at High settings, the average FPS drops from 119 to 45, a reduction of 62%. At Low settings, the drop is from 148 FPS to 56 FPS, a 62% decline as well. This consistent percentage drop across settings is a hallmark of a GPU bottleneck, as the CPU is capable of feeding frames at much higher rates than the RX 570 can render. To put it in perspective, at 1080p Low the system achieves 148 FPS, which is likely near the CPU’s practical limit for Roblox given its single-thread score of 960 in 3dMark. However, at 4K Low, the FPS falls to 56, which is only 38% of the 1080p number. If the CPU were the bottleneck, the FPS would remain relatively stable as resolution increases, but the data shows a steep decline.

The 1440p results sit neatly in between, with High at 79 FPS, Medium at 90 FPS, and Low at 99 FPS. This represents a 34% drop from 1080p to 1440p at High settings (119 to 79 FPS), and a 43% drop from 1440p to 4K (79 to 45 FPS). The scaling from 1080p to 1440p is less severe than from 1440p to 4K, which suggests that the GPU’s memory bandwidth and pixel throughput are increasingly stressed as the pixel count grows. The 256-bit memory bus and 224.0 GB/s bandwidth are simply not enough to maintain frame rates at 4K, where the pixel rate of 39.81 GPixel/s becomes a hard limit. The data shows that the RX 570 is comfortable at 1080p, acceptable at 1440p, and struggling at 4K, with only the Low preset at 4K managing to stay above 60 FPS (56 FPS average). The Ultra preset at 4K drops to 36 FPS, which is borderline unplayable for a fast-paced sandbox game.

FAQ

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

A: Based on the measured data, 1920x1080 is the sweet spot. The system achieves 148 FPS on Low, 135 FPS on Medium, and 119 FPS on High at this resolution, all of which are well above the 60 FPS threshold. At 2560x1440, the frame rates drop to 99 FPS on Low and 79 FPS on High, which is still playable but not as smooth. At 3840x2160, even the Low preset only manages 56 FPS, indicating that 4K is not recommended for this pairing.

Q: How does the RX 570 compare to its nearest rivals in synthetic benchmarks?

A: The RX 570 has an average benchmark score of 28766, which places it in the 74th percentile. Its nearest rival, the AMD Radeon RX 6800M, scores 28874 with a deltaPct of -0.4%, meaning the RX 570 is slightly slower. The AMD Radeon RX 470 scores 28996 with a deltaPct of -0.8%, also slightly ahead. The NVIDIA Quadro RTX 8000 scores 28421 with a deltaPct of 1.2%, meaning the RX 570 is about 1.2% faster than that workstation card.

Q: Is the Intel Core i5-13400F a bottleneck in Roblox?

A: The data suggests it is not. At 1080p Low, the system hits 148 FPS, and at 4K Low it drops to 56 FPS. If the CPU were the bottleneck, the frame rates would not drop so dramatically with resolution. The CPU’s single-thread score of 960 in 3dMark and 3634 in Passmark are strong, and its 77th percentile ranking among all CPUs indicates it has ample headroom. The FPS drops are consistent with GPU limitations.

Q: What is the difference between Low and Ultra settings at 1080p?

A: At 1920x1080, the Low preset averages 148 FPS, while the Ultra preset averages 97 FPS. This is a difference of 51 FPS, or about 34%. The Medium preset sits in between at 135 FPS, and High is at 119 FPS. The scaling is not linear, with the largest jump occurring between High and Ultra (119 to 97 FPS).

Q: How much VRAM does the RX 570 have, and is it enough for Roblox?

A: The RX 570 has 4 GB of GDDR5 memory. For Roblox, this is sufficient at 1080p and 1440p, as the game’s textures are generally light. However, at 4K, the memory bandwidth and capacity may become a factor, as evidenced by the significant FPS drop. The 224.0 GB/s bandwidth is a limiting factor at higher resolutions.

Q: Where does this combo rank among all tested configurations in Roblox?

A: The combination of the Intel Core i5-13400F and AMD Radeon RX 570 ranks 3533 out of 3711 tested combos in Roblox. This puts it in the lower 5th percentile of all tested systems, which is expected given the GPU’s age and mid-range positioning. Despite the low rank, the system still delivers playable frame rates at 1080p.

Settings Recommendations

Based on the measured FPS data, the best experience for this CPU and GPU combo is achieved at 1920x1080 with the High preset. The High preset delivers an average of 119 FPS, which is smooth and responsive, and it offers a significant visual upgrade over the Low preset (148 FPS) without sacrificing much in the way of playability. The Medium preset at 135 FPS is also a strong choice, but High provides a better visual quality per frame rate cost. The Ultra preset at 97 FPS is still playable but represents a 22 FPS drop from High, which may not be worth the marginal visual improvements in a game like Roblox.

At 2560x1440, the Medium preset is the recommended choice, averaging 90 FPS. The High preset at 79 FPS is acceptable, but the Medium preset provides a smoother experience with only a modest visual downgrade. The Low preset at 99 FPS is also viable, but it may look too sparse for some players. At 3840x2160, none of the presets deliver a consistently smooth experience, with the Low preset at 56 FPS being the only one close to 60 FPS. For 4K, the Low preset is the only reasonable option, but players should expect occasional dips below 60 FPS. The Ultra preset at 36 FPS is not recommended for any serious gameplay.

Measured FPS Breakdown

The measured FPS data for the Intel Core i5-13400F and AMD Radeon RX 570 in Roblox is as follows:

1920x1080 (1080p):

• Low: 148 FPS average
• Medium: 135 FPS average, with a minimum of 114 FPS and maximum of 155 FPS
• High: 119 FPS average
• Ultra: 97 FPS average

2560x1440 (1440p):

• Low: 99 FPS average
• Medium: 90 FPS average, with a minimum of 76 FPS and maximum of 103 FPS
• High: 79 FPS average
• Ultra: 64 FPS average

3840x2160 (4K):

• Low: 56 FPS average
• Medium: 51 FPS average, with a minimum of 43 FPS and maximum of 58 FPS
• High: 45 FPS average
• Ultra: 36 FPS average

The data shows a clear progression where each step up in resolution costs roughly 30-40% of the frame rate at the same settings. For example, at High settings, the FPS drops from 119 at 1080p to 79 at 1440p (a 34% reduction), and then to 45 at 4K (a 43% reduction from 1440p). The Medium preset is the only one with min and max FPS data, showing that the RX 570 can maintain a reasonable frame time variance at 1440p and 4K, with a 27 FPS spread at 1440p and a 15 FPS spread at 4K. This suggests that while the average frame rates are low at 4K, the performance is relatively stable without severe stuttering. The Ultra preset is the most demanding, with the largest FPS drops across all resolutions, making it the least suitable for this hardware combination.