Roblox

The AMD Ryzen 7 7700 and NVIDIA GeForce RTX 4090 combination produces exceptionally high frame rates in Roblox, a Sandbox title that appears to scale in a distinctive pattern across resolutions. The data indicates that this pairing is heavily CPU-bound at lower resolutions, with the GPU only becoming a more significant factor as pixel count increases. The measured results show a performance envelope that ranges from a staggering 712.1 FPS at 1080p Low to a still-rapid 173.9 FPS at 4K Ultra, demonstrating that this system has significant headroom in this title.

Resolution Scaling

Analyzing the frame rate deltas between 1080p and 4K reveals a clear picture of where the bottleneck lies. At Low settings, the drop from 712.1 FPS at 1080p to 269.9 FPS at 4K represents a 62% reduction in performance. This steep decline indicates that even at the lowest graphical preset, the RTX 4090's rendering workload grows substantially with resolution, though the absolute numbers remain far above playable thresholds.

The scaling pattern shifts notably at High settings, where the 1080p result of 570.1 FPS falls to 384.8 FPS at 1440p and then to 213.7 FPS at 4K. The transition from 1440p to 4K incurs a 44% performance penalty, which is a larger relative drop than the 32% reduction seen when moving from 1080p to 1440p. This suggests that the GPU begins to assert its influence more strongly at 4K, though the Ryzen 7 7700's 8 cores and 16 threads still keep frame rates exceptionally high.

Ultra settings exhibit the most predictable scaling curve, with 464.9 FPS at 1080p dropping to 310.9 FPS at 1440p and finally to 173.9 FPS at 4K. The proportion of performance retained at 4K compared to 1080p is 37%, which is the lowest among all presets. This indicates that Ultra settings impose a heavier load on both the CPU and GPU, making the 4K Ultra configuration the most balanced workload for this hardware pairing. The data shows that Roblox is not a traditional GPU stress test for this combination; even at maximum resolution and settings, the RTX 4090 never approaches its limits.

GPU Role

The NVIDIA GeForce RTX 4090 brings substantial resources to this title, including 24 GB of GDDR6X memory on a 384-bit bus delivering 1.01 TB/s of bandwidth. Its Ada Lovelace architecture, built on a 5 nm process at TSMC, operates with a base clock of 2235 MHz and a boost clock of 2520 MHz. The GPU's 16384 shading units and 512 TMUs provide ample raw throughput for Roblox's blocky aesthetic, which likely explains why frame rates remain so high even at 4K.

The memory subsystem appears more than sufficient for this game's requirements. With 24 GB of VRAM, there is no scenario in the measured data where memory capacity would become a limiting factor. The effective memory speed of 21 Gbps provides the bandwidth needed to feed the GPU's 176 ROPs, which handle the pixel output at 443.5 GPixel/s. Given that even the 4K Ultra preset only demands 173.9 FPS, the RTX 4090's pixel rate is clearly not being taxed to its theoretical maximum.

The GPU's 128 RT cores and 512 tensor cores are likely underutilized in Roblox, as this sandbox title does not typically employ heavy ray tracing or DLSS workloads. The performance differences between settings at the same resolution are telling: at 4K, moving from Low to Ultra costs 96 FPS (269.9 down to 173.9), which represents a 36% performance hit. This scaling shows that the GPU is responsive to graphical settings changes, but the absolute floor remains far above what most displays can show. The RTX 4090's 82.58 TFLOPS of FP32 performance is evidently overkill for this workload, as the CPU becomes the limiting factor at most settings.

How This Combo Ranks

This particular combination of the AMD Ryzen 7 7700 and NVIDIA GeForce RTX 4090 achieves a rank of 58 out of 1800 tested combos in Roblox. This places the pairing in the top 3.2% of all configurations, which is expected given the high-end nature of both components. The Ryzen 7 7700 itself sits at the 91st percentile among all CPUs, while the RTX 4090 also ranks at the 91st percentile among all GPUs, indicating that both components are individually well above average.

The CPU's nearest rivals in synthetic benchmarks provide context for its performance ceiling. The AMD Ryzen 9 7940H scores 40431, a mere 0.1% lower, while the Intel Core i9-13905H scores 40712, which is 0.6% higher. The Ryzen 7 7700's average benchmark score of 40468 places it slightly above the Ryzen AI 9 365 (40262, 0.5% lower) and the Intel Core Ultra 5 235T (39995, 1.2% lower). These tight margins in CPU benchmarks suggest that the processor is not the differentiator in this combo's high ranking.

On the GPU side, the RTX 4090's average benchmark score of 66473 is closely matched by its nearest rivals, including the NVIDIA Tesla T4 at 66733 (0.4% higher) and the AMD Radeon Pro Vega 56 at 67097 (0.9% higher). The combination's rank of 58 reflects the synergy between these two components in Roblox specifically, where the CPU's strong single-thread performance (3dmark single-thread score of 1049 and Cinebench R23 single-core score of 4136) likely contributes to the high frame rates observed at lower resolutions.

Settings Recommendations

Examining the measured FPS rows, the Medium preset offers the most balanced experience across all resolutions. At 1080p, Medium delivers 647.9 FPS, which is 9% higher than High's 570.1 FPS but 9% lower than Low's 712.1 FPS. The jump to 4K at Medium produces 243.1 FPS, which remains well above the 144 Hz refresh rate common on high-end monitors. This preset appears to provide a meaningful visual improvement over Low while sacrificing only 64.2 FPS at 1080p (712.1 vs 647.9) and 26.8 FPS at 4K (269.9 vs 243.1).

For users prioritizing maximum visual fidelity, Ultra settings remain viable even at 4K with 173.9 FPS. This is a 29% reduction compared to Medium at the same resolution, but the absolute frame rate still exceeds the 165 Hz threshold found on many premium displays. The data shows that High settings offer a middle ground, with 213.7 FPS at 4K representing a 12% improvement over Ultra while maintaining higher visual quality than Medium.

The Low preset is difficult to recommend for this hardware combination, as it leaves significant performance on the table. At 1080p, Low achieves 712.1 FPS, but this exceeds the refresh rate capabilities of virtually all consumer monitors. The 57 FPS difference between Low and Medium at 4K (269.9 vs 243.1) suggests that the graphical improvements of Medium come at a modest cost. Given that even the most demanding configuration (4K Ultra) maintains frame rates far above playable levels, users should err toward higher settings to utilize the RTX 4090's capabilities.

Measured FPS Breakdown

At 3840x2160 resolution, the frame rates range from 173.9 FPS at Ultra to 269.9 FPS at Low. The Medium preset achieves 243.1 FPS, while High lands at 213.7 FPS. This creates a 96 FPS spread between the lowest and highest settings, with each step up in quality costing approximately 30 FPS. The progression from Low to Medium to High to Ultra shows diminishing returns in visual quality for the frame rate cost, as the largest single drop occurs between Medium (243.1) and High (213.7), a 12% reduction.

Moving to 2560x1440, the performance envelope expands significantly. Low settings produce 478.8 FPS, while Ultra still manages 310.9 FPS. The Medium preset delivers 431.8 FPS, and High achieves 384.8 FPS. The gap between Low and Ultra at this resolution is 167.9 FPS, which represents a 35% reduction. The 1440p results show a more linear scaling pattern than 4K, with each settings tier costing roughly 50 FPS compared to the previous one.

At 1920x1080, the CPU becomes the dominant constraint. Low settings produce 712.1 FPS, Medium achieves 647.9 FPS, High reaches 570.1 FPS, and Ultra bottoms out at 464.9 FPS. The difference between Low and Ultra at this resolution is 247.2 FPS, a 35% reduction. Notably, the frame rates at 1080p exceed 460 FPS even at Ultra settings, which means the RTX 4090 is never the limiting factor at this resolution. The scaling from 1080p to 1440p at each settings level shows a consistent 33-36% reduction in frame rate, while the move from 1440p to 4K costs between 40-44%, confirming that the GPU's workload increases disproportionately at higher resolutions.