Roblox

Roblox on an Intel Core i7-13700K paired with an AMD Radeon RX 6800 XT delivers a fascinating performance profile. The data shows a combo that is overwhelmingly powerful for this title, yet the scaling patterns reveal distinct bottlenecks that shift depending on resolution and settings. With a combo rank of 622 out of 1800 tested configurations, this system sits comfortably in the upper third of all pairings, but the measured FPS numbers suggest that the experience is dictated more by CPU limits at lower resolutions and GPU limits at higher ones.

Resolution Scaling

The FPS drop from 1080p to 4K is stark, but the pattern is not uniform across settings. At Low settings, the average frame rate falls from 464.7 FPS at 1920x1080 to 179.2 FPS at 3840x2160, a reduction of roughly 61%. At Ultra settings, the drop is less severe in percentage terms: from 305.3 FPS down to 116.3 FPS, a decline of about 62%. This consistency suggests that the rendering load scales predictably with pixel count, but the absolute numbers tell a more interesting story.

At 1080p Low, the system is clearly CPU-bound. The Core i7-13700K, with its 16 cores and 24 threads, is pushing 464.7 FPS, which is an enormous frame rate for any game. The RX 6800 XT is barely stretched at this point. Moving to 1440p Low, the FPS drops to 313.6, a 32% decrease, which is larger than the pixel count increase of 78% — this indicates the GPU is starting to take over as the limiting factor. At 4K Low, the GPU is fully engaged, and the 179.2 FPS result shows that the Radeon card is now the primary constraint.

The scaling from High to Ultra at each resolution is also revealing. At 1080p, High produces 372.1 FPS, but Ultra drops to 305.3 FPS, a 18% penalty. At 4K, the same settings transition yields a 19% drop (143.6 to 116.3 FPS). This suggests that the Ultra preset adds a consistent load that affects the GPU proportionally, regardless of resolution. The data implies that for competitive play, Low or Medium settings at 1080p or 1440p are the sweet spot, while 4K is viable but will cap out below 180 FPS even on Low.

CPU Role

The Intel Core i7-13700K is a Raptor Lake-S processor with a base clock of 3.40 GHz and a boost clock of 5.40 GHz. Its benchmark scores are exceptional, with a Cinebench R23 multi-core score of 39000 and a single-core score of 5505. In the context of Roblox, which is often lightly threaded, the single-core performance is what matters most. The 3DMark single-thread score of 1136 and the Passmark single-thread score of 4333 both indicate that this CPU can handle high-frequency instruction streams with ease.

The data shows that at 1080p Low, the CPU is the bottleneck, as evidenced by the 464.7 FPS ceiling. Even at 1440p Low, the CPU still has headroom, but the GPU is beginning to limit. The 16 cores and 24 threads are overkill for Roblox's typical workload, but the high boost clock ensures that the game's primary threads are processed quickly. The CPU's 30 MB of shared L3 cache also helps reduce memory latency, which is beneficial for the rapid-fire object updates common in sandbox games.

Compared to nearest rivals, the i7-13700K sits within 0.5% of the AMD EPYC 4364P and Intel Core i9-12900F in average benchmark score, but the actual gaming performance here is more about the clock speed than the core count. The data suggests that a lower-core-count CPU with a similar boost clock would likely produce nearly identical results in Roblox, as the game rarely utilizes more than a few threads. The 125W TDP and 10 nm process node indicate a power-hungry chip, but for this title, the thermal headroom is rarely stressed.

GPU Role

The AMD Radeon RX 6800 XT is a RDNA 2.0 architecture GPU with 16 GB of GDDR6 memory on a 256-bit bus, providing 512.0 GB/s of bandwidth. Its boost clock is 2250 MHz, and it has 4608 shading units. The 16 GB VRAM is far more than Roblox requires, even at 4K Ultra, so memory capacity is not a limiting factor. Instead, the GPU's raw compute throughput, measured at 20.74 TFLOPS FP32, is what drives the higher-resolution results.

At 4K Ultra, the GPU is clearly the bottleneck, producing 116.3 FPS. This is still a playable frame rate, but it shows that the RX 6800 XT is working hard. The 72 ray tracing cores are present but underutilized, as Roblox does not heavily rely on RT effects. The 128 ROPs and 288 TMUs handle the pixel and texture work efficiently, but the 4K pixel count of over 8 million puts significant pressure on the render output pipeline.

The GPU's nearest rivals include the NVIDIA GeForce RTX 4070 Ti SUPER, which has an average benchmark score 2.6% higher, and the Intel Arc A550M, which is 0.5% lower. In Roblox specifically, the RX 6800 XT's performance at 1440p High (250.7 FPS) and 4K High (143.6 FPS) shows that it is well-suited for high-refresh-rate gaming at 1440p and solid 4K performance. The 16 GB VRAM ensures that texture-heavy user-generated content will not cause stuttering, but the game's engine is likely not optimized to leverage the full bandwidth available.

How This Combo Ranks

The combo rank of 622 out of 1800 tested configurations places this system in the 65th percentile of all CPU-GPU pairings tested. This is a strong result, but not top-tier, which is surprising given the individual components' high percentiles (the CPU is in the 93rd percentile of all CPUs, and the GPU is in the 87th percentile of all GPUs). The discrepancy suggests that Roblox's engine does not scale perfectly with high-end hardware, leaving some performance on the table.

The data implies that many combos with slightly weaker CPUs but similar GPUs might achieve comparable results, as the game is not heavily multi-threaded. Conversely, combos with faster GPUs could push higher at 4K, but the CPU would still limit at 1080p. This rank of 622 indicates that while this is a capable setup, it is not the optimal pairing for Roblox specifically — a more balanced mid-range system might offer similar in-game performance without the excess headroom.

The deltaPct values from the nearest rivals show that the CPU is virtually tied with the i7-13700KF (-0.1%) and the Ryzen 9 PRO 5945 (-0.5%), meaning that swapping to those processors would have negligible impact on Roblox. The GPU's nearest rivals show a wider spread, with the RTX 4070 Ti SUPER being 2.6% faster on average, which could translate to a few extra FPS at 4K Ultra, but not enough to change the overall experience.

Measured FPS Breakdown

The measured data provides a comprehensive view of performance across three resolutions and four settings presets. At 1920x1080, the results are:

• Low: 464.7 FPS
• Medium: 422.9 FPS
• High: 372.1 FPS
• Ultra: 305.3 FPS

This shows a clear hierarchy where each settings increase costs roughly 10-15% performance. The gap from Low to Ultra is 34%, indicating that the Ultra preset is significantly more demanding.

At 2560x1440:

• Low: 313.6 FPS
• Medium: 284.9 FPS
• High: 250.7 FPS
• Ultra: 203.1 FPS

The drop from Low to Ultra is 35%, similar to 1080p, but the absolute values are lower. The 1440p Ultra result of 203.1 FPS is still well above 144Hz refresh rates, making this resolution viable for high-refresh monitors.

At 3840x2160:

• Low: 179.2 FPS
• Medium: 162.5 FPS
• High: 143.6 FPS
• Ultra: 116.3 FPS

At 4K, Ultra drops below 120 FPS, which may be noticeable on high-refresh displays. The Low preset at 179.2 FPS is still smooth, but the scaling from Low to Ultra is a 35% reduction, consistent with the other resolutions.

FAQ

Q: Is the CPU or GPU the limiting factor at 1080p Low?

A: The CPU is the bottleneck. The 464.7 FPS result is close to what the Core i7-13700K can push in single-threaded scenarios, as indicated by its 3DMark single-thread score of 1136.

Q: Can this system handle 4K Ultra in Roblox?

A: Yes, but with a caveat. The measured 116.3 FPS at 4K Ultra is playable, but it is the lowest result in the dataset and falls below 120 FPS, which may be noticeable on high-refresh displays.

Q: How does the RX 6800 XT compare to its nearest rival in this game?

A: The NVIDIA GeForce RTX 4070 Ti SUPER has a 2.6% higher average benchmark score. In Roblox, this could translate to roughly 3-5 FPS at 4K Ultra, but the difference is minor.

Q: What is the best settings preset for competitive play?

A: At 1080p Low, the system achieves 464.7 FPS, which is the highest measured result. For a balance of visuals and speed, 1440p Medium at 284.9 FPS offers a strong experience.

Q: Does the 16 GB VRAM matter for Roblox?

A: The 16 GB VRAM is far more than Roblox requires, even at 4K Ultra. The game's textures are not demanding enough to stress this capacity, so it does not become a limiting factor.

Q: Is this combo ranked higher than average?

A: Yes, the combo rank of 622 out of 1800 places it in the top 35% of all tested configurations, which is above average.

Settings Recommendations

Based on the measured FPS rows, the ideal settings depend on the target refresh rate and resolution. For 1080p, the Low preset at 464.7 FPS is the best choice for maximum frame rates, but Medium at 422.9 FPS offers a significant visual upgrade with only a 9% performance penalty. High at 372.1 FPS is also excellent, while Ultra at 305.3 FPS is still above 300 FPS, making it viable for high-refresh esports monitors.

For 1440p, Medium at 284.9 FPS provides the best balance of visual fidelity and speed, as it is only 9% slower than Low but looks notably better. High at 250.7 FPS is also a strong option for those wanting more detail. Ultra at 203.1 FPS is still above 200 FPS, so it is recommended for users with 200Hz+ displays who prioritize image quality.

For 4K, Low at 179.2 FPS is the only preset that exceeds 144 FPS, making it the choice for high-refresh 4K gaming. Medium at 162.5 FPS is also excellent and offers better visuals. High at 143.6 FPS is playable but may not max out 144Hz displays. Ultra at 116.3 FPS is best reserved for cinematic single-player experiences where frame rates above 60 FPS are sufficient. The data suggests that the 1440p Medium preset is the overall sweet spot for this combo, delivering near-300 FPS with enhanced graphical settings.