Roblox

Resolution Scaling

The performance drop from 1080p to 4K is steep and consistent across all settings, indicating that the AMD Radeon RX 570 is the primary bottleneck at higher resolutions. At 1080p Low, the combo delivers 145.6 FPS, which falls to 97.8 FPS at 1440p (a 32.8% reduction) and then to 57.9 FPS at 4K (a 40.8% reduction from 1440p). This scaling pattern is classic GPU-bound behavior — the CPU has ample headroom, but the graphics card's fill rate and memory bandwidth are overwhelmed as pixel count rises.

The drop from 1080p to 1440p is less severe than the drop from 1440p to 4K across all presets. For Ultra settings, 1080p yields 96.7 FPS, 1440p drops to 63.7 FPS, and 4K falls to 35.8 FPS. The 4K Ultra result is just barely playable, while 4K High at 43.4 FPS and 4K Medium at 52.7 FPS sit in marginal territory. The fact that Low settings at 4K still only reach 57.9 FPS — barely half of the 1080p Low result — confirms that resolution scaling is the dominant factor here, not settings complexity.

What this means in practice: players targeting 60 FPS should stay at 1080p or 1440p. At 4K, even dropping to Low cannot reliably hit 60 FPS, as the 57.9 FPS average is below that threshold. The data suggests that the RX 570's 4 GB GDDR5 memory and 224.0 GB/s bandwidth are insufficient for smooth 4K operation in Roblox, regardless of how much load is removed from the scene via lower settings.

GPU Role

The AMD Radeon RX 570 is a Polaris 20 chip built on GCN 4.0 architecture with a 14 nm process from GlobalFoundries. It runs at a base clock of 1168 MHz and a boost clock of 1244 MHz, with memory clocked at 1750 MHz (7 Gbps effective). The card has 2048 shading units, 128 texture mapping units, and 32 ROPs, delivering a pixel rate of 39.81 GPixel/s and a texture rate of 159.2 GTexel/s. Compute performance is rated at 5.095 TFLOPS FP32.

The GPU's 4 GB of GDDR5 memory on a 256-bit bus provides 224.0 GB/s of bandwidth. This is the key constraint at 4K. Roblox scenes at 3840x2160 require substantial memory traffic, and the data shows the card's performance collapses at this resolution. The 4 GB capacity is also a concern for high-resolution textures, though Roblox's stylized art style tends to be less memory-hungry than photorealistic titles.

Looking at the GPU's benchmark scores, the 3DMark Steel Nomad DX12 result is 880, Geekbench Metal is 44915, Geekbench OpenCL is 32084, and Geekbench Vulkan is 42752. The average benchmark score of 30158 places the RX 570 at the 74th percentile of all GPUs. Its nearest rivals by average score are the NVIDIA GeForce RTX 5060 (30109, delta 0.2%), AMD Radeon RX 7700 XT (30097, delta 0.2%), NVIDIA Tesla M60 (29969, delta 0.6%), and NVIDIA GeForce RTX 5070 Mobile (29928, delta 0.8%). The RX 570 essentially matches these cards in synthetic benchmarks, but those rivals are far newer — the RX 570 launched on 2017-04-17 and is now end-of-life.

CPU Role

The Intel Core i7-13700K is a Raptor Lake-S part with 16 cores (8 performance and 8 efficient) and 24 threads. It has a base clock of 3.40 GHz and a boost clock of 5.40 GHz, with a TDP of 125 W. The cache hierarchy includes 80 KB L1 per core, 2 MB L2 per core, and 30 MB shared L3. This is a high-end desktop CPU with an average benchmark score of 47282, placing it at the 93rd percentile of all CPUs.

In Roblox, the CPU's role is to feed the GPU with draw calls and physics updates. At 1080p, the CPU has enough headroom that the GPU becomes the limiting factor. This is evident from the fact that even at 1080p Ultra, the combo achieves 96.7 FPS — the CPU is not holding back the RX 570. The 13700K's single-thread performance is strong: Cinebench R23 single-core scores 5505, and 3DMark single-thread scores 1136. Roblox is known to be sensitive to single-thread performance, and this CPU delivers.

The 13700K's nearest rivals by average score are the Intel Core i7-13700KF (47334, delta -0.1%), AMD EPYC 4364P (47131, delta 0.3%), Intel Core i9-12900F (47081, delta 0.4%), and AMD Ryzen 9 PRO 5945 (47527, delta -0.5%). The 13700K is within 0.5% of all these parts, meaning the CPU is not a differentiator in this combo. Its 16 cores and 24 threads are far more than Roblox needs, so the bottleneck is entirely on the GPU side.

FAQ

Q: Can this combo run Roblox at 4K 60 FPS?

A: No. The highest average FPS at 3840x2160 is 57.9 FPS on Low settings. Ultra at 4K averages only 35.8 FPS.

Q: What is the best resolution for this combo?

A: 1080p is the sweet spot. All settings at 1920x1080 produce averages above 96 FPS, with Low hitting 145.6 FPS and Medium reaching 137.6 FPS.

Q: How does the RX 570 compare to its closest rivals?

A: The RX 570 has an average benchmark score of 30158, which is within 0.8% of the NVIDIA GeForce RTX 5060, AMD Radeon RX 7700 XT, NVIDIA Tesla M60, and NVIDIA GeForce RTX 5070 Mobile.

Q: Is the CPU or GPU the bottleneck?

A: The GPU is the clear bottleneck. At 1080p Low, the combo hits 145.6 FPS, while at 4K Low it drops to 57.9 FPS — a 60.2% reduction that points directly at the graphics card.

Q: What is the combo's ranking among tested configurations?

A: This setup ranks 1718 out of 1800 combos tested in Roblox, placing it in the bottom 5% of all configurations.

Q: Does lowering settings help at 4K?

A: Yes, but not enough for 60 FPS. Dropping from Ultra (35.8 FPS) to Low (57.9 FPS) at 4K yields a 61.7% improvement, yet the result remains below the 60 FPS threshold.

How This Combo Ranks

This combination of Intel Core i7-13700K and AMD Radeon RX 570 ranks 1718 out of 1800 tested combos in Roblox. That puts it in the bottom 4.6% of all configurations, which is a surprising result given the CPU's strength. The 13700K is a top-tier processor — its average benchmark score of 47282 places it at the 93rd percentile of all CPUs — but the RX 570 drags the overall experience down.

The rank is heavily influenced by the GPU's 4 GB memory limitation and its age. The RX 570 was released on 2017-04-17, and its average benchmark score of 30158 places it at the 74th percentile of GPUs. However, in Roblox specifically, the combo's rank is worse than the GPU's percentile would suggest, indicating that Roblox's rendering workload is particularly punishing for this card at higher resolutions.

The discrepancy between the CPU's strength and the combo's low rank highlights a fundamental imbalance. A 13700K paired with a modern GPU would rank far higher, but the RX 570 caps the system's performance. For players who already own this CPU, upgrading the GPU would yield dramatic improvements; for those considering this exact combo, the data suggests the GPU is the weak link.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend on the target resolution. At 1080p, all presets are playable, but the best experience balances visual quality with headroom. Ultra at 1080p averages 96.7 FPS, which is smooth but leaves little margin for dips in busy scenes. Medium at 1080p averages 137.6 FPS, providing excellent smoothness with only a minor visual compromise. High at 1080p sits between at 121 FPS.

For 1440p, the recommendation shifts. High at 1440p averages 78.8 FPS, which is playable but not ideal for competitive play. Medium at 1440p averages 93 FPS, making it the best choice for this resolution — it delivers near-100 FPS performance while maintaining decent visual fidelity. Low at 1440p hits 97.8 FPS, but the visual downgrade is rarely worth the extra 4.8 FPS over Medium.

At 4K, the data is clear: no setting achieves 60 FPS. Low at 4K averages 57.9 FPS, which is the closest to playable, but the visual quality is severely reduced. Medium at 4K averages 52.7 FPS, and High drops to 43.4 FPS. The recommendation is to avoid 4K with this combo unless the player prioritizes resolution over frame rate; otherwise, 1440p Medium or 1080p Ultra are the best compromise points.

Measured FPS Breakdown

The measured data covers 12 configurations: 3 resolutions, 4 settings each. Here is the full breakdown:

3840x2160 (4K):

• Low: 57.9 FPS
• Medium: 52.7 FPS
• High: 43.4 FPS
• Ultra: 35.8 FPS

The spread from Low to Ultra at 4K is 22.1 FPS, with Ultra delivering 38.2% less performance than Low. This is the widest relative spread across all resolutions, confirming that at 4K, settings have a large impact but even the best case fails to hit 60 FPS.

2560x1440 (1440p):

• Low: 97.8 FPS
• Medium: 93 FPS
• High: 78.8 FPS
• Ultra: 63.7 FPS

At 1440p, the spread from Low to Ultra is 34.1 FPS. Low and Medium are both above 90 FPS, while High and Ultra remain playable. Ultra at 63.7 FPS is just above the 60 FPS threshold, making it a viable option for players who prioritize visuals.

1920x1080 (1080p):

• Low: 145.6 FPS
• Medium: 137.6 FPS
• High: 121 FPS
• Ultra: 96.7 FPS

At 1080p, even Ultra exceeds 96 FPS, and Low approaches 146 FPS. The spread from Low to Ultra is 48.9 FPS, the largest absolute spread of any resolution. This indicates that at 1080p, the GPU has enough headroom to allow settings to meaningfully scale performance, whereas at 4K, the card is too constrained to benefit fully from lower settings.

The data shows a clear pattern: the RX 570 performs best relative to its own capabilities at 1080p, where it can leverage its 224.0 GB/s bandwidth effectively. At higher resolutions, the 4 GB memory capacity and limited bandwidth become insurmountable bottlenecks, capping performance well below what the 13700K could otherwise support.