Roblox

Roblox is not typically the first title that comes to mind when evaluating flagship hardware, yet the data for the AMD Ryzen 9 7900X and NVIDIA GeForce RTX 5070 Ti combination reveals a fascinating stress test for high-refresh-rate gaming. The measured frames per second (FPS) across resolutions and settings show that this pairing is capable of extraordinary performance, but the scaling patterns expose a clear bottleneck hierarchy. This analysis breaks down the measured results to understand where the limits lie and what the numbers imply for gameplay.

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

The FPS deltas between resolutions are the first clue about system balance. At 1080p Low, the combo produces 614.1 FPS. Moving to 1440p Low drops that to 410.2 FPS, a reduction of 203.9 FPS. Stepping up to 4K Low yields 232.3 FPS, another 177.9 FPS loss. This scaling is steep and linear, indicating that the GPU is becoming the primary constraint as pixel count rises. At 1080p, the frame rates are so astronomically high that the CPU’s 12 cores and 24 threads are likely the limiting factor, but the data suggests the RTX 5070 Ti still has headroom.

The pattern repeats for High settings: 493.6 FPS at 1080p, 332.2 FPS at 1440p, and 187.7 FPS at 4K. The drop from 1080p to 1440p is 161.4 FPS, while the drop from 1440p to 4K is 144.5 FPS. This near-consistent decrement suggests that the rendering workload is scaling predictably with resolution, which is typical for a game that is not heavily CPU-bound at higher resolutions. The fact that 4K High still achieves 187.7 FPS indicates that the GPU is far from overwhelmed, but the resolution scaling shows it is the dominant variable.

Ultra settings tell a similar story: 401.6 FPS at 1080p, 270.3 FPS at 1440p, and 150.8 FPS at 4K. The percentage drop from 1080p to 4K is substantial, but the absolute numbers remain playable. The data implies that at 1080p, the system is likely CPU-limited, as the FPS differences between Low and High settings are relatively small (614.1 vs. 493.6), whereas at 4K, the GPU’s workload is more significant, with a wider spread between Low and Ultra (232.3 vs. 150.8). This suggests that for competitive play at lower resolutions, the CPU’s single-thread performance is critical, but for visual fidelity at 4K, the GPU’s 16 GB of VRAM and 896.0 GB/s bandwidth are being utilized effectively.

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

The RTX 5070 Ti’s specifications directly influence these outcomes. With 16 GB of GDDR7 memory on a 256-bit bus, the memory bandwidth of 896.0 GB/s is more than sufficient for Roblox’s relatively modest texture requirements, even at 4K Ultra. The base clock of 2295 MHz and boost clock of 2452 MHz provide the raw compute throughput, with an FP32 rating of 43.94 TFLOPS. This explains why the game never dips below 150 FPS in any measured configuration.

The GPU’s 8960 shading units and 280 TMUs handle the geometry and texture work, while the 96 ROPs ensure pixel output stays high. In a game like Roblox, which often uses simple voxel-based rendering, the GPU’s raw fillrate (235.4 GPixel/s) is likely underutilized, but the high boost clock ensures that even at 4K Ultra, the 150.8 FPS average is maintained. The fact that the GPU’s percentile rank is 87th among all GPUs, with an average benchmark score of 52086, places it in the top tier, but the data shows it is not the limiting factor at 1080p.

The VRAM capacity is also worth noting. 16 GB is ample for Roblox, which does not have high VRAM demands, but it future-proofs the system for other titles. The measured results show no signs of memory throttling, as the FPS drops are consistent across settings. The GPU’s role becomes more pronounced at 4K, where the difference between Low (232.3 FPS) and Ultra (150.8 FPS) is 81.5 FPS, indicating that the shading units are working harder. This is a clear sign that the GPU is the primary driver of performance at higher resolutions, while the CPU takes precedence at lower ones.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination ranks 167th out of 1800 tested combinations in Roblox, placing it in the top 9.3% of all systems. This is a strong showing, but it is not the absolute top, which is surprising given the hardware. The rank suggests that there are 166 other combos that achieve higher FPS in this specific game, likely those with even faster CPUs or GPUs that are better optimized for Roblox’s engine.

The CPU’s nearest rivals provide context for this ranking. The AMD Ryzen 9 7900X has an average benchmark score of 50556, which is 0.1% lower than the Intel Core Ultra 5 235 (50598), 0.4% lower than the AMD Ryzen 9 5900XT (50738), and 0.5% lower than the Intel Core i7-13850HX (50827). These tiny deltas mean that the CPU is not the reason for the 167th rank. The GPU’s nearest rival, the NVIDIA GeForce RTX 4080, has an identical average score of 52085 (0% delta), while the AMD Radeon RX 7700S is 0.8% higher. This suggests that the RTX 5070 Ti is performing exactly as expected, but the combo rank indicates that Roblox may favor different hardware configurations.

The 167th rank out of 1800 combos is impressive, but it implies that other pairings, perhaps with CPUs that have higher single-thread scores or GPUs with different architectures, edge it out. The data shows that this combo is in the top 10% of all tested systems, which confirms its capability, but it also highlights that Roblox’s engine has quirks that may not align perfectly with this hardware’s strengths.

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

The complete measured FPS table offers a detailed view of performance:

At 1920x1080, the averages are: Low 614.1 FPS, Medium 556.5 FPS, High 493.6 FPS, and Ultra 401.6 FPS. The spread from Low to Ultra is 212.5 FPS, showing that settings have a significant impact even at this resolution.

At 2560x1440, the averages are: Low 410.2 FPS, Medium 375.8 FPS, High 332.2 FPS, and Ultra 270.3 FPS. The spread narrows to 139.9 FPS, indicating that the GPU is starting to become more involved.

At 3840x2160, the averages are: Low 232.3 FPS, Medium 211.3 FPS, High 187.7 FPS, and Ultra 150.8 FPS. The spread is 81.5 FPS, and the pattern is clear: as resolution increases, the performance difference between settings decreases, confirming that the GPU is the bottleneck at 4K.

The data also shows that the FPS drops are not linear across settings. At 1080p, going from Low to Medium costs 57.6 FPS, from Medium to High costs 62.9 FPS, and from High to Ultra costs 92.0 FPS. This increasing penalty for higher settings suggests that the CPU’s 12 cores are handling the additional draw calls, but the GPU is doing more work per frame. At 4K, the drops are more uniform: 21.0 FPS from Low to Medium, 23.6 FPS from Medium to High, and 36.9 FPS from High to Ultra. This uniform scaling is a sign of a GPU-bound scenario.

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

For players seeking the highest frame rates, 1080p Low is the clear choice, delivering 614.1 FPS, which is ideal for competitive play on high-refresh monitors. However, the jump to 1080p Medium only costs 57.6 FPS (down to 556.5 FPS), which is still far above any refresh rate, making it the best balance for visual quality without sacrificing performance. The data shows that 1080p High at 493.6 FPS is also excellent, but Medium offers a better balance.

At 1440p, Low at 410.2 FPS is overkill for most displays, but Medium at 375.8 FPS is a solid choice. High at 332.2 FPS is also viable, but Ultra at 270.3 FPS is still exceptionally smooth. For 4K, the recommendation depends on the display’s refresh rate. Low at 232.3 FPS is fast, but Medium at 211.3 FPS provides better visuals with minimal loss. High at 187.7 FPS is the sweet spot for 4K if the monitor is 144Hz or 165Hz, as it stays well above 144 FPS. Ultra at 150.8 FPS is playable but may not saturate a 165Hz display.

The data indicates that Medium settings at any resolution offer the most balanced experience, as they maintain high FPS while improving visual fidelity. The only scenario where Ultra is recommended is if the display’s refresh rate is 144Hz or lower, as the 150.8 FPS at 4K Ultra still exceeds that threshold.

FAQ

Q: What is the highest average FPS recorded for this combo in Roblox?

A: The highest average FPS is 614.1, achieved at 1920x1080 with Low settings.

Q: How much performance is lost when moving from 1080p to 4K at High settings?

A: The average FPS drops from 493.6 at 1080p High to 187.7 at 4K High, a reduction of 305.9 FPS.

Q: Is the RTX 5070 Ti the limiting factor at 4K Ultra?

A: Yes, the data shows a significant drop to 150.8 FPS at 4K Ultra, indicating the GPU is the primary constraint at this resolution and settings combination.

Q: How does this combo rank against all other tested systems in Roblox?

A: It ranks 167th out of 1800 tested combinations, placing it in the top 9.3% of all systems.

Q: What is the average FPS difference between Low and Ultra settings at 1440p?

A: At 2560x1440, Low averages 410.2 FPS, while Ultra averages 270.3 FPS, a difference of 139.9 FPS.

Q: Does the CPU or GPU have a larger impact on FPS at 1080p?

A: The data suggests the CPU is the limiting factor at 1080p, as the FPS differences between settings are relatively small, with Low at 614.1 FPS and Ultra at 401.6 FPS.

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

The AMD Ryzen 9 7900X, with its 12 cores and 24 threads, is a powerhouse, but Roblox is not a heavily threaded game. The CPU’s base clock of 4.70 GHz and boost clock of 5.60 GHz are crucial for the high frame rates seen at 1080p. The single-thread benchmark scores, such as 6168 in Cinebench R23 and 4238 in Passmark, indicate that this CPU has excellent single-core performance, which is essential for games that rely on a primary rendering thread.

The CPU’s 64 MB of shared L3 cache helps reduce memory latency, which is beneficial for the game’s asset streaming. The 3DMark single-thread score of 1093 further confirms its strength. At 1080p, the data shows that the CPU is the bottleneck, as the FPS does not scale linearly with GPU load. The difference between 1080p Low (614.1 FPS) and 1440p Low (410.2 FPS) is massive, but the CPU is still able to push over 600 FPS, which reflects its raw speed.

The CPU’s nearest rivals show it is well-positioned in the market. It is 0.1% slower than the Intel Core Ultra 5 235 and 0.8% slower than the Intel Core i9-13980HX in average benchmark scores, but these differences are negligible in real-world gaming. The 7900X’s 12 cores are overkill for Roblox, but the high boost clock is what matters. The data implies that at 1080p, the CPU is the limiting factor, and any further FPS gains would require a CPU with even higher single-thread performance. At 4K, the CPU’s role diminishes, as the GPU takes over as the primary constraint, allowing the 7900X’s headroom to go unused. This makes the combo extremely well-balanced for high-resolution play, while still being capable of absurdly high frame rates for competitive gaming.