Roblox

Roblox with the AMD Ryzen 5 3600 and NVIDIA GeForce RTX 5090 D presents a striking imbalance: a 2025 flagship GPU paired with a 2019 mid-range CPU. The measured frame rates are exceptionally high across all settings, but the data reveals that the processor, not the graphics card, dictates the performance ceiling. The RTX 5090 D is clearly capable of far more work than this CPU can feed it, making this combination a study in bottlenecking at extreme resolutions.

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

The AMD Ryzen 5 3600 is a 6-core, 12-thread processor based on the Zen 2 architecture, with a base clock of 3.60 GHz and a boost clock of 4.20 GHz. It features 32 MB of shared L3 cache and supports DDR4 memory on the AM4 socket. In synthetic benchmarks, it scores 15,045 points in Cinebench R23 multi-core and 2,124 in single-core, placing it in the 71st percentile of all CPUs. Its average benchmark score of 17,035 is nearly identical to that of the Intel Core i7-1260P (17,007, delta 0.2%) and Intel Core i5-11400 (17,067, delta -0.2%), indicating it remains a competent mid-range part.

In Roblox, the CPU's role is significant. The game's physics and world simulation are often single-thread or lightly-threaded workloads, and the Ryzen 5 3600's single-core performance—a Geekbench single-core score of 1,536 and a Passmark single-thread score of 2,562—becomes the limiting factor. The data shows that at 1080p, moving from Low to Ultra settings only drops the average FPS from 586 to 504, a difference of 82 frames. This small spread suggests that even at the lowest settings, the CPU is struggling to keep up, preventing the GPU from stretching its legs. The 3DMark single-thread score of 696 and 2-thread score of 1,361 reinforce that this processor’s per-core strength is modest compared to modern parts.

When resolution increases, the CPU load does not scale with pixel count, but the GPU load does. At 4K, the average FPS drops to 236 on High settings, but this is still a massive frame rate that requires the CPU to issue draw calls and update game state at a rate of over 200 times per second. The fact that FPS remains above 190 even at 4K Ultra shows the Ryzen 5 3600 is working near its limit, but it is the component preventing the RTX 5090 D from demonstrating its full potential. The CPU's multi-threaded capacity, shown in a Cinebench R20 multi-core score of 6,318, is ample for Roblox's typically low thread count, so the bottleneck is purely single-core speed. The data suggests that a faster CPU would yield higher frame rates, particularly at 1080p, where the GPU is underutilized.

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

The NVIDIA GeForce RTX 5090 D is a massive GPU based on the Blackwell 2.0 architecture, with 32 GB of GDDR7 memory on a 512-bit bus, providing 1.79 TB/s of bandwidth. It has 21,760 shading units, 680 texture mapping units, and 176 raster output units. Its boost clock is 2407 MHz, and it achieves a Passmark G3D score of 44,065, placing it in the 92nd percentile of all GPUs. Its average benchmark score of 77,712 is 1.1% higher than the AMD Radeon RX 6650M XT (76,904) and 1.6% lower than the AMD Radeon RX 6850M XT (78,940), showing it is a top-tier card in raw compute.

In Roblox, the GPU's role is to render the game's blocky geometry and simple shaders. The 32 GB of VRAM is overkill for this title, but the sheer compute power of the RTX 5090 D is what drives the high frame rates. At 1080p Low, the GPU achieves 586 FPS average, but this is not a signal of the GPU's power—it is the CPU holding it back. The GPU is likely idle for a significant portion of each frame, waiting for the processor to send new instructions. The 1.79 TB/s memory bandwidth is irrelevant at these frame rates because the CPU cannot feed it enough data.

The GPU's performance scaling across settings is evident. At 4K, the average FPS goes from 293 on Low to 191 on Ultra, a 102-FPS drop. This shows that while the CPU is a bottleneck, the GPU is still doing meaningful work at higher settings, and the resolution increase does load the GPU more heavily. The RTX 5090 D's raw power is such that it can render Roblox at 4K Ultra at 191 FPS, which is far beyond what most displays can show, but the data indicates this is a GPU-limited scenario at that extreme setting. At 1080p, the GPU is never the limiting factor; the CPU is. The card's FP32 performance of 104.8 TFLOPS is more suited to 4K gaming, but in this pairing, it is held back by the Ryzen 5 3600.

Settings Recommendations — which preset gives the best experience per the measured rows

Analyzing the measured FPS rows, the best experience depends on the user's display refresh rate and resolution. The data shows that the "Medium" preset is the only one with recorded minimum and maximum FPS values, providing insight into frame time consistency. At 1080p Medium, the average FPS is 567, with a minimum of 482 and a maximum of 652. This suggests that the Medium preset offers a stable frame rate with less variance than the other presets. The High preset at 1080p averages 543 FPS, while Ultra averages 504 FPS; both are lower than Medium. This is unusual, as higher settings typically reduce FPS, but the gap between Medium and High is 24 FPS, indicating the CPU is the limiting factor at this resolution.

At 1440p, Medium again provides the best balance, averaging 471 FPS with a minimum of 401 and a maximum of 542. The Low preset averages 512 FPS, but without min/max data, it is unclear if it is as stable. The High preset at 1440p drops to 417 FPS. At 4K, the Medium preset averages 267 FPS with a minimum of 227 and a maximum of 307, while High averages 236 FPS and Low averages 293 FPS. The Medium preset at 4K offers a 76 FPS advantage over Ultra (191 FPS) while maintaining a higher minimum frame rate than the High preset's average.

Given this data, the Medium preset appears to be the sweet spot across all resolutions. It provides the highest average FPS compared to High and Ultra, and it is the only preset with measured minimum FPS data, suggesting it is the most consistent. The Low preset offers higher average FPS, but the lack of min/max data makes it a riskier choice for users who experience frame drops. For a 60 Hz display, the Medium preset at 4K delivers 267 FPS, which is more than sufficient. For a 240 Hz display, the Medium preset at 1080p delivers 567 FPS, which is also sufficient. The Medium preset is the recommended choice because it offers the best combination of high average FPS and documented frame time stability.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the AMD Ryzen 5 3600 and NVIDIA GeForce RTX 5090 D ranks 107th out of 3,010 tested combos in Roblox. This puts it in the top 3.6% of all combinations the benchmark database has measured. This high rank is primarily driven by the RTX 5090 D's immense power, as the CPU is a limiting factor. The rank indicates that this combo outperforms 2,903 other tested combinations, but it also suggests that there are 106 combos that achieve higher frame rates in Roblox.

Given the CPU's 71st percentile ranking and the GPU's 92nd percentile ranking, one might expect this combo to rank higher than 107th. The gap between the two components is the reason. The Ryzen 5 3600's single-thread performance is a bottleneck, preventing the RTX 5090 D from reaching its full potential. Combos that rank higher likely pair the RTX 5090 D with a faster CPU, such as a newer Ryzen 7 or Core i7, which would allow the GPU to stretch its legs. The data shows that this combo is GPU-heavy, but the CPU holds it back from being a top-50 contender. Still, 107th out of 3,010 is an excellent result, and the measured FPS numbers confirm that this is a very fast combination for Roblox, even if the CPU is not ideal.

FAQ — 4-6 Q&A pairs answerable from FACT PACK data

Q: What is the average FPS at 1080p with High settings?

A: The average FPS at 1920x1080 with High settings is 543.

Q: Does the RTX 5090 D have enough VRAM for Roblox?

A: The RTX 5090 D has 32 GB of GDDR7 memory, which is far more than Roblox requires. The measured data shows no memory-related performance issues at any resolution or setting.

Q: How does the Ryzen 5 3600 compare to the Intel Core i5-11400?

A: The Ryzen 5 3600 has an average benchmark score of 17,035, which is 0.2% lower than the Intel Core i5-11400's score of 17,067. They are statistically equivalent in performance.

Q: What is the lowest average FPS recorded for this combo?

A: The lowest average FPS is 191, measured at 3840x2160 with Ultra settings.

Q: Is this combo better at 1080p or 4K?

A: The combo achieves higher average FPS at 1080p, with a maximum average of 586 on Low settings, compared to a maximum average of 293 at 4K on Low settings. The gap is due to the GPU being more heavily loaded at higher resolutions.

Q: What is the combo's rank out of all tested combos?

A: This combo ranks 107th out of 3,010 tested combinations in Roblox.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data provides a complete picture of performance across three resolutions and four settings presets.

At 1920x1080, the Low preset delivers an average of 586 FPS. The Medium preset averages 567 FPS, with a minimum of 482 and a maximum of 652. The High preset averages 543 FPS. The Ultra preset averages 504 FPS. The difference between Low and Ultra is 82 FPS, a relatively small margin that indicates a CPU bottleneck, as the GPU should show a larger disparity between such settings.

At 2560x1440, the Low preset averages 512 FPS. The Medium preset averages 471 FPS, with a minimum of 401 and a maximum of 542. The High preset averages 417 FPS. The Ultra preset averages 338 FPS. The gap between Low and Ultra widens to 174 FPS at this resolution, showing that the GPU is starting to become more of a factor as pixel count increases.

At 3840x2160, the Low preset averages 293 FPS. The Medium preset averages 267 FPS, with a minimum of 227 and a maximum of 307. The High preset averages 236 FPS. The Ultra preset averages 191 FPS. The spread from Low to Ultra is 102 FPS. This is the largest absolute drop, but the percentage difference is similar to 1440p.

The Medium preset is the only one with min/max data at all three resolutions, suggesting it is the most stable. The High and Ultra presets lack this data, making it difficult to assess their frame time consistency. The Low preset consistently provides the highest average FPS, but it likely sacrifices visual quality for speed.

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

The FPS scaling from 1080p to 4K reveals the nature of the bottleneck. At Low settings, the average FPS drops from 586 at 1080p to 512 at 1440p (a 74 FPS drop) and then to 293 at 4K (a 219 FPS drop from 1080p). This is a total reduction of 293 FPS, or 50% of the 1080p score. At Medium settings, the drop is from 567 at 1080p to 471 at 1440p (96 FPS drop) and then to 267 at 4K (300 FPS drop from 1080p). At High settings, the drop is from 543 at 1080p to 417 at 1440p (126 FPS drop) and then to 236 at 4K (307 FPS drop). At Ultra settings, the drop is from 504 at 1080p to 338 at 1440p (166 FPS drop) and then to 191 at 4K (313 FPS drop).

The FPS drop from 1080p to 1440p is consistently smaller than the drop from 1440p to 4K. For example, at High settings, the 1080p to 1440p drop is 126 FPS, while the 1440p to 4K drop is 181 FPS. This indicates that the GPU is being progressively more loaded as resolution increases. However, the fact that FPS remains above 190 FPS even at 4K Ultra shows that the GPU is still not fully saturated. If the GPU were the sole limiting factor, the FPS drop from 1080p to 4K would be roughly proportional to the pixel count increase (4x), which would result in a much larger drop. Instead, the 4K Ultra score of 191 FPS is 38% of the 1080p Ultra score of 504 FPS.

This data suggests a dual bottleneck. At 1080p, the CPU is the primary limiter, as the GPU has little work to do. At 4K, the GPU is doing more work, but the CPU still cannot provide frames fast enough to fully utilize the RTX 5090 D. The fact that the FPS does not drop to ~126 FPS (which would be a 4x drop from 504) confirms that the CPU is holding the system back at all resolutions. A more powerful CPU would likely shift the bottleneck entirely to the GPU at 4K, resulting in a more linear scaling curve. The measured data shows that the Ryzen 5 3600 is the limiting component in this pairing, even at 4K, where the GPU is heavily loaded.