Scales from mobile devices to high-end PCs. The engine is lightweight and typically capped at 60 FPS. It requires a stable internet connection for asset streaming and a DX10 compatible GPU.
This game has a built-in FPS cap of 60 FPS
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 285 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 264 FPS. At 4K, all settings exceed 207 FPS.
The GeForce RTX 4090 is 843% above the recommended GPU (GeForce GTX 660) for Roblox. The Xeon Gold 6421N is 2584% above the recommended CPU (Core 2 Duo).
The Xeon Gold 6421N sets the FPS ceiling at 1080p medium, 1440p medium, 4k (medium/high/ultra), while the GeForce RTX 4090 still has headroom. The FPS ceiling is closely matched at 1080p (low/high/ultra), 1440p (low/high/ultra), 4k low.
Approximated average price on current market:
Combo price: $4076. At 1080p Ultra, this combo delivers 285 FPS, equivalent to 0.07 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.107 fps/$ | 0.087 fps/$ | 0.091 fps/$ | 0.070 fps/$ |
| 1440p | 0.083 fps/$ | 0.071 fps/$ | 0.077 fps/$ | 0.065 fps/$ |
| 4k | 0.061 fps/$ | 0.053 fps/$ | 0.059 fps/$ | 0.051 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 4k medium, the Xeon Gold 6421N sets the ceiling at about 220 FPS, while the GeForce RTX 4090 could reach 261 FPS. In this scenario, the CPU limits the GPU potential by 16% (FPS gap: 41 FPS). Overall distribution: CPU limits 5/12 cells, GPU limits 0/12, balanced 7/12.
The Xeon Gold 6421N and GeForce RTX 4090 stay close in effective frame-generation ceiling across most presets, so neither side consistently suppresses the other by a large margin.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | Balanced | CPU Limits GPU 15% | Balanced | Balanced |
| 1440p (2K QHD) | Balanced | CPU Limits GPU 12% | Balanced | Balanced |
| 4K (Ultra HD) | Balanced | CPU Limits GPU 16% | CPU Limits GPU 14% | CPU Limits GPU 13% |
We estimate the maximum FPS the processor can sustain and the maximum FPS the graphics card can sustain in each setting, then compare those limits directly.
Limit Factor formula: (stronger - weaker) / stronger. Example: if CPU ceiling is 200 FPS and GPU ceiling is 140 FPS, then GPU limits CPU by 30%.
CPU Limits GPU means the processor ceiling is lower. GPU Limits CPU means the graphics ceiling is lower. Balanced means the FPS ceilings are close enough that the gap is negligible.
A component can still be the FPS limiter without reaching 100% utilization. The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU14% - 20% <> GPU6% - 19% <> | CPU13% - 20% <> GPU6% - 19% <> | CPU13% - 21% <> GPU8% - 23% <> | CPU9% - 20% <> GPU5% - 22% <> |
| 1440p (2K QHD) | CPU14% - 20% <> GPU6% - 20% <> | CPU13% - 20% <> GPU6% - 21% <> | CPU13% - 21% <> GPU9% - 24% <> | CPU9% - 20% <> GPU6% - 23% <> |
| 4K (Ultra HD) | CPU14% - 20% <> GPU9% - 29% <> | CPU13% - 19% <> GPU10% - 30% <> | CPU13% - 21% <> GPU13% - 33% <> | CPU9% - 20% <> GPU13% - 32% <> |
The Xeon Gold 6421N + GeForce RTX 4090 pairing runs this title with CPU utilization between 9% and 21% and GPU utilization between 5% and 33%. Xeon Gold 6421N keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 14% at 1080p to 21% at 4K, while CPU averages move from 16% to 16%.
Neither component is close to saturation: CPU tops out at 21% and GPU at 33%. This pattern suggests possible engine-side limits, an FPS cap, or workload constraints unrelated to raw hardware throughput. It also shows why low utilization does not automatically mean there is no FPS limiter.
At 1080p, averages sit around CPU 16% and GPU 14%. At 1440p, that shifts to CPU 16% and GPU 14%, and at 4K it reaches CPU 16% and GPU 21%. This shows that workload scaling is present on both components, with stronger pressure on the GPU.
4K (Ultra HD) High is the most balanced preset based on this dataset. It runs around CPU 17% (13-21%) and GPU 23% (13-33%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Xeon Gold 6421N remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Xeon Gold 6421N and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. They describe hardware load, but they do not directly tell you which component sets the FPS ceiling.
Important: a CPU or GPU can still be the FPS limiter without reaching 100% utilization. Two processors can both show 40% usage and still deliver very different frame rates, depending on per-core speed, cache, engine threading, driver overhead, and frame preparation efficiency.
Data generated by our Machine Learning engine trained on real-world benchmarks. Shows the approximate average utilization at each setting.
See how your processor and graphics card compare against the game official minimum and recommended system specs. The placement of your hardware is calculated using relative synthetic performance scores to help you gauge overall playability.
Your CPU is 2584% above and your GPU is 843% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+2584%vsrecommended
+843%vsrecommended
+1860%vsminimum
+2422%vsminimum
Yes, the Xeon Gold 6421N paired with the GeForce RTX 4090 can run Roblox smoothly up to 4k achieving around 207 FPS at Ultra quality. Your GPU is 843% above the recommended specs, and your CPU is 2584% above the recommended requirements.
This CPU + GPU combo costs approximately $4076 ($2427 CPU (Rank #336 Value) + $1649 GPU (Rank #77 Value)). Your Xeon Gold 6421N provides phenomenal top-tier performance but at a premium enthusiast price. Since you are essentially at the ceiling of current hardware capabilities, there are no meaningful performance upgrades available. However, if you wanted a more cost-effective build that still delivers a great experience, you could theoretically step down to a high-end processor with a significantly better value rating. For example, the EPYC 9355P is a great upgrade option for around $2998 (Rank #287 for value).
Your Xeon Gold 6421N is already an incredibly powerful processor. While it's technically the first component to hit its limit (which is completely normal in state-of-the-art builds), there is no meaningful upgrade path that would drastically improve your Roblox performance right now. CPU fully utilized at: 1080p medium, 1440p medium, 4k medium, 4k high, 4k ultra.
Roblox does not currently support Frame Generation technologies like DLSS 3 or FSR 3. Your performance is based entirely on native rendering. If the game adds support in a future update, newer GPUs will benefit the most.
Roblox requires at minimum a Celeron D (CPU) and GeForce 6600 (GPU) with 1 GB RAM and 20 MB storage. For the recommended experience, you need a Core 2 Duo and GeForce GTX 660 with 4 GB RAM. Your Xeon Gold 6421N and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
These Roblox FPS results are not arbitrary numbers. They come from calculations informed by thousands of real gaming benchmarks, and the typical accuracy range is around 10% to 15%. That makes them far more useful than generic FPS calculators that simply invent values without a benchmark foundation. Actual in-game performance can still vary with drivers, updates, RAM configuration, cooling, and the exact scene being rendered.
Performance estimates are based on synthetic benchmarks and hardware capabilities.
Results may vary based on drivers, OS, and background processes.
