Roblox

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

The measured frame rates show a dramatic scaling curve that tells a clear story about where the bottleneck lives in this pairing. At 1080p with Low settings, the combo produces 715.6 FPS. Moving to 1440p drops that to 474.4 FPS, and 4K brings it down to 267.6 FPS. That is a 62.6% reduction from 1080p Low to 4K Low, which is a steep penalty for resolution alone.

At Ultra settings, the pattern is similar but with lower absolute numbers. The 1080p Ultra result is 464.2 FPS, 1440p Ultra falls to 310.9 FPS, and 4K Ultra lands at 177.1 FPS. The gap between Low and Ultra at the same resolution grows as resolution increases: at 1080p, the difference is 251.4 FPS (715.6 vs 464.2), while at 4K it shrinks to 90.5 FPS (267.6 vs 177.1). This compression of the settings spread at higher resolutions is a classic sign that the GPU is becoming the limiting factor as pixel count rises.

The data suggests that at 1080p, the CPU is heavily involved in limiting performance. The Ryzen 7 5700's 8 cores and 16 threads at a 3.70 GHz base clock are being pushed hard to feed the RTX 4090 enough draw calls to maintain frame rates above 700 FPS. At 4K, the GPU's workload dominates, and the gap between settings presets narrows because the rendering pipeline is saturated regardless of quality level. The 4K High result of 217.1 FPS versus 4K Medium at 246.3 FPS shows that even moderate quality increases cost meaningful frame rate when the GPU is already working at maximum capacity.

How This Combo Ranks — use comboRankInGame vs other tested combos

This specific CPU-GPU pairing ranks 55th out of 1,800 tested combinations for Roblox. That places it in the top 3.1% of all combos in the database, which is an exceptionally strong showing for a sandbox game that is not typically considered a demanding title. The rank reflects the raw power of the RTX 4090 combined with the capable Zen 3 architecture of the Ryzen 7 5700.

The CPU's average benchmark score of 27,220 puts it in the 84th percentile against all CPUs, with nearest rivals including the Intel Core i9-9900K at a 0.7% delta and the Intel Core i7-12700H at 0.8%. The Ryzen 7 5700 edges out these competitors by a narrow margin, but the real story is that this CPU is not the weak link in the chain. For a game like Roblox, which often scales with single-thread performance, the 3dmark_single_thread score of 901 and the passmark_single_thread score of 3,296 indicate strong per-core capability.

The GPU ranks in the 91st percentile against all GPUs with an average benchmark score of 66,473. Its nearest rivals are all professional or workstation cards — the NVIDIA Tesla T4 at -0.4%, the Tesla P40 at 0.5%, and the Radeon Pro Vega 56 at -0.9% — which underscores how far ahead this consumer GPU sits in raw compute. The combination of a top-tier GPU with a solid mid-range CPU produces a combo rank that is higher than either component's individual percentile, suggesting that Roblox benefits from the balance of high GPU throughput and adequate CPU feeding.

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

The RTX 4090 brings 24 GB of GDDR6X memory on a 384-bit bus with 1.01 TB/s of bandwidth. For Roblox, which is not a VRAM-intensive title, this memory configuration is massively over-provisioned. The game's simple blocky geometry and relatively low texture complexity do not come close to saturating even a fraction of the available VRAM. The memory clocks run at 1,313 MHz with 21 Gbps effective speed, and the 1.01 TB/s bandwidth is more than sufficient for any scenario this game can produce.

The GPU's clock speeds are 2,235 MHz base and 2,520 MHz boost, built on TSMC's 5 nm process with 76,300 million transistors. The Ada Lovelace architecture with 16,384 shading units, 512 TMUs, and 176 ROPs provides 82.58 TFLOPS of FP32 compute. These specifications translate directly to the measured results: even at 4K Ultra, the combo maintains 177.1 FPS, which is far above the refresh rate of most monitors. The pixel rate of 443.5 GPixel/s and texture rate of 1,290.2 GTexel/s mean that the GPU is never the bottleneck at lower resolutions — the CPU becomes the constraint first.

The passmark_directx_11 score of 326 and passmark_directx_12 score of 150 are notably lower than the raw compute numbers would suggest, but this is typical for API-specific tests that may not fully utilize the architecture. The geekbench_opencl score of 317,684 and geekbench_vulkan score of 270,615 show that the GPU excels in modern compute workloads, which aligns with Roblox's use of DirectX 12 Ultimate (12_2).

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

Based on the measured data, the Medium preset at 1440p offers the best balance for most users. The 1440p Medium result of 430.1 FPS is 54.1 FPS higher than 1440p High (382.5 FPS) and only 44.3 FPS lower than 1440p Low (474.4 FPS). The visual quality improvement from Low to Medium is substantial in most games, and the frame rate remains far above any display's refresh rate capability.

For users with 4K displays, the Medium preset at 246.3 FPS is the sweet spot. The jump from Medium to High at 4K costs 29.2 FPS (from 246.3 to 217.1), while the jump from Medium to Ultra costs 69.2 FPS (from 246.3 to 177.1). Ultra at 4K is still playable at 177.1 FPS, but the visual gains from Medium to Ultra are often imperceptible in Roblox's art style, making Medium the practical choice.

At 1080p, the High preset at 572.7 FPS is the recommended setting. The difference between High and Ultra at 1080p is 108.5 FPS (from 572.7 to 464.2), which is a larger drop than the visual improvement typically justifies. Low at 1080p reaches 715.6 FPS, but that extra 142.9 FPS offers no practical benefit on any current monitor. The Medium preset at 645 FPS is also viable, but High provides better visual fidelity with frame rates still above 500 FPS.

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

1080p: The Low preset delivers 715.6 FPS, Medium drops to 645 FPS, High reaches 572.7 FPS, and Ultra bottoms out at 464.2 FPS. The spread from Low to Ultra is 251.4 FPS, with each step up in quality costing between 72.8 and 108.5 FPS.

1440p: Low produces 474.4 FPS, Medium hits 430.1 FPS, High manages 382.5 FPS, and Ultra falls to 310.9 FPS. The total spread from Low to Ultra is 163.5 FPS, notably tighter than at 1080p. The step from Medium to High costs 47.6 FPS, while High to Ultra costs 71.6 FPS.

4K: Low achieves 267.6 FPS, Medium reaches 246.3 FPS, High drops to 217.1 FPS, and Ultra bottoms out at 177.1 FPS. The spread from Low to Ultra is 90.5 FPS, the narrowest of any resolution. The step from Medium to High costs 29.2 FPS, and High to Ultra costs 40 FPS.

Across all resolutions, the pattern is consistent: Low is always the fastest, Ultra is always the slowest, and the relative cost of each settings step increases as resolution decreases. The 1080p results show the largest percentage drop from Low to Ultra (34.9% reduction), while 4K shows the smallest (33.8% reduction). This indicates that at higher resolutions, the GPU's workload dominates and settings changes have less relative impact.

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

The AMD Ryzen 7 5700 is a Zen 3 (Cezanne) part built on TSMC's 7 nm process with 10,700 million transistors on a 180 mm² die. It features 8 cores and 16 threads with a 3.70 GHz base clock and 4.60 GHz boost clock. The 65 W TDP is modest for an 8-core processor, and the 16 MB L3 cache with 512 KB L2 per core provides adequate memory hierarchy for gaming workloads.

The benchmark data shows this CPU performs well in both single-thread and multi-thread scenarios. The 3dmark_16_threads score of 6,628 and 3dmark_max_threads score of 6,617 are nearly identical, indicating that the CPU scales efficiently across all cores. The cinebench_r23_multicore score of 20,655 and singlecore score of 2,916 demonstrate strong per-core performance, which is critical for Roblox's mostly single-threaded game logic.

The CPU's nearest rivals include the Intel Core i9-9900K (0.7% delta), Intel Core i7-12700H (0.8%), and Intel Core i7-1370P (0.8%), all within 1.2% of the Ryzen 7 5700's average score. This grouping suggests that the CPU is not a performance outlier in either direction — it is a competent mid-range processor that does not hold back the RTX 4090 in Roblox.

The 1080p results reveal the CPU's influence most clearly. At Low settings, the GPU is underutilized, and the 715.6 FPS result is likely near the CPU's maximum frame generation capability for this game. The 4.60 GHz boost clock and 3dmark_single_thread score of 901 are the key factors here, as Roblox's physics and game logic often run on a single thread. The 16 MB L3 cache helps with the game's asset streaming, and the dual-channel DDR4 memory support at 51.2 GB/s bandwidth is sufficient for the game's modest memory requirements.