Roblox

Roblox is a notoriously CPU-sensitive sandbox title, and the measured frame rates for the Intel Core i7-13700K paired with the AMD Radeon RX 6600 XT reveal a configuration that is heavily balanced toward processor throughput. The dataset shows exceptional performance at lower resolutions, but the scaling curve suggests a definitive shift in bottleneck behavior as pixel count increases. The i7-13700K, with its 16 cores and 24 threads, appears to be doing the heavy lifting, while the RX 6600 XT’s 8 GB of GDDR6 memory becomes a critical factor at 4K.

Resolution Scaling

The most striking observation is the frame rate drop from 1080p to 4K. At 1920x1080 with Low settings, the combo delivers an average of 308.1 FPS. This is an extraordinarily high figure, indicating that the CPU is feeding the GPU far more frames than it can process, even at a modest graphical preset. Moving to 2560x1440 on Low, the average drops to 207.3 FPS, a reduction of roughly 33%. This is a classic sign of a GPU-limited scenario emerging, as the pixel count increases by 78% but the frame rate does not drop proportionally, suggesting the graphics card is managing the load efficiently.

The transition to 3840x2160 (4K) tells a different story. At 4K Low, the average FPS plummets to 116.7. This is a 62% drop from the 1440p figure. The scaling here is far steeper than the pixel count increase alone would dictate, which points directly to the GPU becoming the primary limiting component. The data implies that the RX 6600 XT’s compute resources, while capable at lower resolutions, are saturated at 4K. The frame rate is no longer dictated by the CPU’s ability to prepare frames but by the GPU’s ability to rasterize them. At 4K Ultra, the average falls to 77.8 FPS, a 33% drop from the 4K High preset’s 93.1 FPS, further confirming that the graphics card is the definitive bottleneck at this resolution, where every increase in pixel shading demand directly hits performance.

FAQ

Q: What is the highest average frame rate achieved by this combo?

A: The highest measured average is 308.1 FPS, achieved at 1920x1080 resolution with Low settings.

Q: How does the combo perform at 1440p with Ultra settings?

A: At 2560x1440 with Ultra settings, the combo produces an average of 134.5 FPS, which is a significant drop from the 167.5 FPS seen at High settings.

Q: Is the CPU or GPU the limiting factor at 4K?

A: The data indicates the GPU is the limiting factor. At 3840x2160, the frame rate drops to 116.7 FPS on Low and 77.8 FPS on Ultra, showing a steep decline as graphics load increases, which is characteristic of a GPU bottleneck.

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

A: At 1920x1080, Low settings yield 308.1 FPS, while Ultra settings yield 198.5 FPS. This is a difference of 109.6 FPS, or about 36% lower performance on Ultra compared to Low.

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

A: This specific combination of CPU and GPU ranks at 1237 out of 1800 tested combos for Roblox, placing it in the lower third of the performance spectrum for this game.

Q: Does the game favor more CPU cores or higher clock speeds?

A: The Intel Core i7-13700K has a boost clock of 5.40 GHz and 16 cores. The high frame rates at 1080p, where CPU load is often the bottleneck, suggest that the combination of high clock speed and core count is effective for Roblox’s physics and scripting workloads.

GPU Role

The AMD Radeon RX 6600 XT is built on the RDNA 2.0 architecture with a Navi 23 chip. Its role in this game becomes clear when examining the scaling data. The GPU has a boost clock of 2589 MHz and 8 GB of GDDR6 memory on a 128-bit bus, providing a bandwidth of 256.0 GB/s. These specifications are sufficient for high-refresh-rate gaming at 1080p, as evidenced by the 246.6 FPS average at High settings. The GPU’s 2048 shading units and 64 ROPs are clearly capable of handling Roblox’s visual style, which is not overly demanding on pixel throughput at lower resolutions.

However, the 8 GB VRAM buffer becomes a potential constraint at 4K. The frame rate drop from 1440p to 4K is drastic, and while this is largely due to raw compute load, the memory capacity and bandwidth are also suspect. At 4K, texture and geometry data demands increase, and the 256.0 GB/s bandwidth may struggle to feed the shaders efficiently. The data shows that even at 4K Low, the average FPS is 116.7, which is well below the 1440p High figure of 167.5. This suggests that the GPU’s memory subsystem is a contributing factor to the performance cliff, even when graphical details are minimized. The GPU’s average benchmark score of 27985 places it in the 71st percentile, and its closest rival, the NVIDIA GeForce GTX 980 Ti, scores 27956, a delta of only 0.1%.

How This Combo Ranks

The comboRankInGame field places this exact configuration at 1237 out of 1800 tested combos. This rank of 1237 is surprisingly low for a system with a high-end CPU and a mid-range GPU. The data suggests that while the i7-13700K is a top-tier processor, the RX 6600 XT is holding back the overall potential in this specific title. The CPU alone sits in the 93rd percentile among all processors, with an average benchmark score of 47282. Its nearest rival, the Intel Core i7-13700KF, scores 47334, a delta of -0.1%, showing they are functionally identical.

The GPU, however, is in the 71st percentile, and its score of 27985 is significantly lower than the CPU’s relative standing. This imbalance explains the 1237 rank. The ranking implies that many other tested combos, likely those with lower-tier CPUs but higher-tier GPUs, achieve better frame rates in Roblox at higher resolutions. This is a critical insight: for this game, the GPU selection matters more for overall rank than the CPU, as the CPU is rarely the bottleneck once the resolution increases. The delta between the GPU and its rivals is small (e.g., 0.4% against the AMD Radeon R9 M395X), but the absolute performance ceiling of the RX 6600 XT limits the combo’s placement.

Settings Recommendations

For the best experience, the measured data points to a clear sweet spot. At 1920x1080, the Medium preset delivers 282.1 FPS, which is only 26 FPS less than Low but a massive 83.6 FPS more than Ultra. This suggests that Medium provides a near-maximum frame rate while likely offering a much better visual quality than Low. High settings at 1080p still yield 246.6 FPS, which is excellent, but the jump from High to Medium is only a 36 FPS gain, making Medium the more efficient choice for competitive play.

At 2560x1440, the High preset offers 167.5 FPS, which is a solid target for high-refresh-rate monitors. The Medium preset at 1440p provides 186.8 FPS, but the visual difference between Medium and High is often significant in sandbox games where draw distance matters. For a balanced experience, High at 1440p is recommended. At 4K, the situation is different. The Ultra preset drops to 77.8 FPS, which is playable but not ideal for fast-paced action. The Low preset at 116.7 FPS is the only 4K option that exceeds 100 FPS, but it sacrifices visual fidelity. Given the steep scaling, 1440p High appears to be the optimal configuration for this combo, balancing visual quality and performance.

Measured FPS Breakdown

The complete dataset shows a consistent pattern across all settings. At 1920x1080, the averages are 308.1 FPS (Low), 282.1 FPS (Medium), 246.6 FPS (High), and 198.5 FPS (Ultra). This represents a spread of 109.6 FPS between the lowest and highest presets, indicating that the GPU has enough headroom at this resolution to absorb significant increases in graphical complexity. The scaling is linear, with each preset step costing roughly 30-40 FPS.

At 2560x1440, the averages are 207.3 FPS (Low), 186.8 FPS (Medium), 167.5 FPS (High), and 134.5 FPS (Ultra). The spread here is 72.8 FPS, which is tighter than at 1080p. This suggests that the GPU is starting to feel the pressure of the increased pixel count, and the performance cost of higher presets is becoming more pronounced. The drop from High to Ultra is 33 FPS, the largest single-step decrease at this resolution.

At 3840x2160, the averages are 116.7 FPS (Low), 107.9 FPS (Medium), 93.1 FPS (High), and 77.8 FPS (Ultra). The spread is only 38.9 FPS, which is a clear sign of a GPU bottleneck. The performance difference between Low and Ultra is much smaller in absolute terms than at lower resolutions, confirming that the RX 6600 XT is running out of compute and memory bandwidth. The frame rate is constrained by the GPU’s maximum throughput, regardless of the visual settings.

CPU Role

The Intel Core i7-13700K is a Raptor Lake-S processor with 16 cores and 24 threads, a base clock of 3.40 GHz, and a boost clock of 5.40 GHz. Its benchmark scores are exceptional, particularly in multi-threaded tests like Cinebench R23, where it scores 39000, and PassMark Multithread, where it scores 45887. These figures place it in the 93rd percentile of all CPUs. In Roblox, the CPU’s role is to handle game logic, physics simulation, and script execution, which are often single-threaded or lightly threaded tasks.

The data shows that at 1080p, the CPU is not a limiting factor, as the frame rates are extremely high. The single-thread performance, evidenced by a Geekbench single-core score of 2850 and a Cinebench R20 single-core score of 2312, is critical. The high boost clock of 5.40 GHz ensures that Roblox’s primary thread can execute quickly, allowing for the 308.1 FPS figure on Low settings. However, the CPU’s multi-core capabilities are also relevant, as Roblox can offload some tasks to other threads. The 3DMark 16-thread score of 10717 and the max-thread score of 12412 indicate that the CPU can handle concurrent workloads without breaking a sweat.

The CPU’s L3 cache of 30 MB (shared) is also a factor, as it helps reduce memory latency for frequently accessed game data. The combo’s rank of 1237 is not a reflection of the CPU’s performance, but rather a mismatch where the CPU is overqualified for the GPU it is paired with in this game. The CPU’s nearest rivals, such as the AMD EPYC 4364P (delta of 0.3%), show that the i7-13700K is at the top of its class, but this does not translate to a high combo rank because the GPU cannot keep up at higher resolutions.