Roblox

The pairing of the Intel Core i5-9400 with the AMD Radeon RX 7700 in Roblox produces a dataset that heavily favors the graphics card, with frame rates remaining remarkably high even at 4K. The measured results indicate a system capable of delivering a fluid experience across all tested configurations, but the scaling patterns reveal a clear bottleneck hierarchy that shifts depending on the resolution and settings selected.

Resolution Scaling

The frame rate drop from 1080p to 4K is substantial, but the absolute numbers remain high enough to suggest the GPU is doing the heavy lifting. At Low settings, the average FPS falls from 386 at 1920x1080 to 146 at 3840x2160, a reduction of 240 FPS, or roughly 62%. This steep decline indicates that at lower settings, the GPU is being pushed harder as the pixel count increases, moving the system from a CPU-limited state at 1080p to a more balanced or GPU-limited state at 4K.

Moving to Medium settings, the average FPS at 1080p is 352, which drops to 235 at 2560x1440 and then to 133 at 3840x2160. The scaling here is more gradual in percentage terms between 1440p and 4K (a 43% drop) compared to the 1080p to 1440p transition (a 33% drop). This suggests that at Medium preset, the CPU can still feed frames efficiently at lower resolutions, but the GPU's workload becomes more dominant as resolution climbs, particularly with the additional detail settings enabled.

The High settings row shows a similar pattern: 311 FPS at 1080p, 207 FPS at 1440p, and 117 FPS at 4K. The Ultra preset, which is the most demanding, yields 252 FPS at 1080p, 168 FPS at 1440p, and 95 FPS at 4K. The gap between High and Ultra at 1080p is 59 FPS, but at 4K that gap narrows to just 22 FPS. This compression at higher resolutions implies that the GPU is becoming the limiting factor, as the extra graphical load from Ultra settings has less headroom to impact performance when the pixel throughput is already high.

For a sandbox game like Roblox, the data suggests that at 1080p, the Intel Core i5-9400’s six cores and six threads are likely the primary constraint, especially at Low and Medium settings where FPS exceeds 350. The RX 7700, with its 16 GB of GDDR6 memory and 624.1 GB/s bandwidth, appears more than capable of handling the geometry and effects, but the CPU's 2.90 GHz base clock and 4.10 GHz boost clock may struggle to issue draw calls fast enough to push beyond the observed ~386 FPS ceiling.

Settings Recommendations

Based on the measured rows, the Medium preset offers the best balance of visual fidelity and performance, particularly at 1440p and 4K. At 2560x1440, Medium delivers an average of 235 FPS with a minimum of 199 FPS and a maximum of 270 FPS. This is only 23 FPS lower than the High preset's average at the same resolution, but it likely enables additional visual features that improve the experience without a significant cost. The minimum FPS of 199 at Medium ensures that even in busy scenes, the frame rate stays well above the 60 FPS threshold, providing a smooth experience.

At 3840x2160, Medium is also the recommended starting point, producing an average of 133 FPS. The High preset at 4K only achieves 117 FPS, which is still playable but offers less headroom for demanding user-generated content common in Roblox. Ultra at 4K drops to 95 FPS, which is acceptable but may feel less responsive on high-refresh-rate displays. For users with 1080p monitors, the Low preset at 386 FPS is excessive for most displays, but the Medium preset at 352 FPS is a better choice for visual quality while maintaining an extremely high frame rate.

The data indicates that Ultra settings provide diminishing returns. At 1080p, Ultra is 100 FPS slower than Medium, and at 4K it is 38 FPS slower. Given that the minimum FPS figures are only provided for Medium settings, it is reasonable to infer that Ultra may introduce more frame-time variance, although the average scores remain high. Therefore, the recommendation is to use Medium for a universally smooth experience across all resolutions, with High as a viable alternative for those prioritizing visual clarity over the last few FPS.

How This Combo Ranks

The combination of the Intel Core i5-9400 and AMD Radeon RX 7700 achieves a combo rank of 1341 out of 3010 tested combinations in Roblox. This places it in the 44th percentile of all combos, meaning it outperforms a majority of systems but is not at the top tier. The CPU alone sits at the 47th percentile versus all CPUs, with an average benchmark score of 2254, which is nearly identical to its nearest rivals. The Intel Core i7-1068NG7 scores 2259 (0.2% higher), while the Intel Core i3-10305 scores 2264 (0.4% higher). This tight clustering indicates that the i5-9400 is a mid-pack processor, and its performance in Roblox is likely consistent with its general benchmark standing.

The GPU, however, is stronger relative to its peers, ranking at the 58th percentile versus all GPUs with an average score of 15852. Its nearest rival, the AMD Radeon R9 370X, scores 15862 (0.1% higher), while the NVIDIA GeForce RTX 3060 Ti scores 16129 (1.7% higher). The RX 7700’s performance is competitive with these cards, but the overall combo rank of 1341 suggests that the CPU is holding back the system in Roblox. If the GPU were paired with a stronger processor, the rank would likely improve, as the measured FPS at 1080p Low (386) appears to be a CPU-imposed ceiling rather than a GPU limitation.

The rank data implies that while this combo is capable of high frame rates, it is not optimized for Roblox’s specific workload. The gap between the combo’s percentile rank and the GPU’s percentile rank suggests that a different CPU could unlock more performance, particularly at lower resolutions where the CPU is more likely to be the bottleneck.

Measured FPS Breakdown

At 1920x1080, the average FPS ranges from 386 at Low settings to 252 at Ultra. The Medium preset shows an average of 352 FPS, with a minimum of 299 and a maximum of 404. The High preset averages 311 FPS. These numbers indicate that at 1080p, the system is capable of exceeding the refresh rate of most monitors, even at the highest settings. The delta between Low and Ultra is 134 FPS, showing that settings have a significant impact on performance at this resolution.

At 2560x1440, the averages are 258 FPS at Low, 235 FPS at Medium, 207 FPS at High, and 168 FPS at Ultra. The Medium preset again provides a minimum of 199 FPS and a maximum of 270 FPS. The scaling from 1080p to 1440p results in a 33% reduction in FPS at Medium settings, which is expected as the pixel count increases by 78%. The system remains highly responsive at this resolution, with even Ultra settings staying above 165 FPS.

At 3840x2160, the averages are 146 FPS at Low, 133 FPS at Medium, 117 FPS at High, and 95 FPS at Ultra. The Medium preset’s minimum is 113 FPS and maximum is 153 FPS. The drop from 1440p to 4K is more pronounced, with a 43% reduction at Medium settings. This is due to the 4K resolution having 2.25 times the pixels of 1440p, which places a heavier load on the GPU. Even at Ultra, the 95 FPS average is smooth, but it is the only configuration that dips below the 100 FPS mark.

The data shows that the RX 7700 has enough memory bandwidth and processing power to handle 4K in Roblox, as evidenced by the 146 FPS at Low settings. However, the CPU’s role becomes more apparent at 1080p, where the FPS differences between Low and Medium are smaller than the differences between Medium and High, suggesting that the CPU is saturating its ability to process game logic at higher frame rates.

FAQ

Q: What is the best resolution for this combo to maintain a 144 Hz refresh rate?

A: At 2560x1440, all settings except Ultra maintain an average FPS above 200, which is well above 144 Hz. Even at 3840x2160, Medium settings keep the average at 133 FPS, close to the 144 Hz target, while High and Ultra fall short.

Q: Does the CPU or GPU limit performance more at 1080p?

A: The data suggests the CPU is the limiting factor at 1080p. The FPS at Low settings is 386, which is likely near the maximum the Intel Core i5-9400 can produce. The GPU’s performance percentile (58th) is higher than the CPU’s (47th), indicating the CPU is the weaker link.

Q: Is the RX 7700 overkill for Roblox?

A: Based on the measured FPS, the RX 7700 provides far more performance than needed for standard Roblox gameplay. Even at 4K Ultra, the average FPS is 95, which is playable. The GPU’s 16 GB of VRAM is also excessive for this title, but it ensures headroom for future updates or more demanding user-generated content.

Q: How does the i5-9400 compare to its nearest rivals in general benchmarks?

A: The i5-9400 scores 2254 on average, which is 0.2% lower than the Intel Core i7-1068NG7 (2259) and 0.4% lower than the Intel Core i3-10305 (2264). It is 0.3% higher than the AMD Ryzen 5 PRO 1500 (2246), showing it is very close to its peers.

Q: What is the impact of using Ultra settings at 4K?

A: At 3840x2160, Ultra settings produce an average FPS of 95, which is 38 FPS lower than Medium and 22 FPS lower than High. The minimum FPS is not provided for Ultra, but the average is still above 60, making it a viable option for those prioritizing visual quality.

Q: Can this combo handle Roblox at high refresh rates (e.g., 240 Hz)?

A: At 1920x1080, Low and Medium settings exceed 240 FPS (386 and 352, respectively), while High (311) also surpasses this threshold. At 2560x1440, Low (258) and Medium (235) are close to 240 FPS, but High (207) falls short. At 4K, no settings reach 240 FPS.

CPU Role

The Intel Core i5-9400 is a six-core, six-thread processor based on the Coffee Lake architecture, manufactured on a 14 nm process. It has a base clock of 2.90 GHz and a boost clock of 4.10 GHz, with 9 MB of shared L3 cache. Its benchmark scores include a Cinebench R23 multi-core score of 6629 and a single-core score of 935, which places it in the 47th percentile of all CPUs. The processor’s average benchmark score of 2254 is nearly identical to its nearest rivals, indicating that its general compute performance is average for its generation.

In Roblox, the CPU’s role is primarily to handle game logic, physics, and draw calls. The measured FPS at 1080p Low (386) suggests that the i5-9400 can process a high number of frames, but the scaling to 1440p and 4K shows that the CPU is not the primary bottleneck at higher resolutions. However, the fact that the FPS at 1080p Medium (352) is only 34 FPS lower than Low (386) suggests that the CPU is close to its limit, as the additional graphical work from Medium settings does not proportionally reduce performance.

The six cores and six threads are sufficient for Roblox, which is not heavily multithreaded, but the lack of hyper-threading may limit performance in complex scenes with many players or objects. The 4.10 GHz boost clock provides adequate single-thread performance, as evidenced by the high frame rates, but the CPU’s 47th percentile rank indicates that it is not a top-tier processor. The data implies that upgrading the CPU could yield higher frame rates at 1080p, but the current setup is well-balanced for 1440p and 4K gaming.

GPU Role

The AMD Radeon RX 7700 is a powerful graphics card based on the RDNA 3.0 architecture, featuring 2560 shading units and 96 ROPs. It has a base clock of 1900 MHz and a boost clock of 2459 MHz, with 16 GB of GDDR6 memory on a 256-bit bus, providing 624.1 GB/s of bandwidth. The GPU’s benchmark scores include a Passmark G3D score of 20974 and a Geekbench OpenCL score of 106028, placing it in the 58th percentile of all GPUs. Its average score of 15852 is competitive with its nearest rivals, including the NVIDIA GeForce RTX 3060 Ti, which scores 1.7% higher.

In Roblox, the GPU is the dominant component, as evidenced by its ability to maintain high frame rates even at 4K. The measured FPS at 4K Low (146) is higher than the CPU’s likely limit, but the scaling from 1080p to 4K shows that the GPU is being increasingly utilized. The 16 GB of VRAM is more than sufficient for Roblox, which typically uses less than 4 GB, but it ensures that the card can handle any texture packs or future updates without issue.

The GPU’s memory bandwidth of 624.1 GB/s is a key factor in its 4K performance, as it allows for efficient transfer of texture data. The 40 RT cores and 25.18 TFLOPS of FP32 performance are likely underutilized in Roblox, which does not heavily use ray tracing or advanced compute features. The data indicates that the RX 7700 is overqualified for this game, but its performance headroom means that users can run the game at maximum settings while maintaining high frame rates, making it a solid choice for a sandbox title that may have unpredictable performance demands.