Roblox

FAQ

Q: What is the measured average FPS for this combo in Roblox at 1080p with Ultra settings?

A: At 1920x1080 with the Ultra preset, the Intel Core Ultra 9 275HX and NVIDIA GeForce RTX 4080 combination delivers an average of 301 FPS.

Q: How does the RTX 4080 compare to its nearest rival in synthetic GPU benchmarks?

A: The RTX 4080's average benchmark score is 54247, which is 0.1% higher than the NVIDIA GeForce RTX 4080 SUPER (score 54209) and 1.1% higher than the AMD Radeon Pro W5700X (score 54828).

Q: What is the CPU's multi-threaded performance in Cinebench R23?

A: The Intel Core Ultra 9 275HX scores 35589 points in Cinebench R23 multi-core, with a single-core score of 2204 points.

Q: Does the data show a bigger FPS jump from 4K to 1440p or from 1440p to 1080p on High settings?

A: On High settings, moving from 3840x2160 (140 FPS) to 2560x1440 (248 FPS) yields a 108 FPS increase. Moving from 2560x1440 to 1920x1080 (371 FPS) yields a 123 FPS increase, so the jump to 1080p is larger in absolute terms.

Q: What is the combo's ranking among all tested system combinations in Roblox?

A: This specific CPU-GPU pairing ranks 1223 out of 3711 tested combos, placing it in the top third of all tested configurations.

Q: How much VRAM does the RTX 4080 have and what is its memory bandwidth?

A: The GPU features 16 GB of GDDR6X memory on a 256-bit bus, providing a memory bandwidth of 716.8 GB/s.

GPU Role

The NVIDIA GeForce RTX 4080 is the primary driver of raw frame output in Roblox across the measured configurations. Built on the Ada Lovelace architecture with a 5 nm process at TSMC, this mobile GPU contains 45,900 million transistors on a 379 mm² die. The chip operates with a base clock of 2205 MHz and a boost clock of 2505 MHz, while the 16 GB of GDDR6X memory runs at an effective 22.4 Gbps. This memory configuration delivers a substantial 716.8 GB/s of bandwidth, which is more than sufficient for Roblox's asset streaming and texture-heavy scenes.

The GPU's compute resources are considerable: 9728 shading units, 304 texture mapping units, and 112 raster output pipelines work in tandem to handle the game's rendering load. With 76 ray tracing cores and 304 tensor cores present, the architecture is well-prepared for any future graphical enhancements Roblox might adopt, though the current measured data focuses on traditional rasterization. The FP32 throughput of 48.74 TFLOPS indicates the sheer mathematical capability available for both game rendering and any background compute tasks.

In the measured FPS results, the GPU's performance ceiling is evident at higher resolutions. At 3840x2160 with Ultra settings, the combo produces 114 FPS average, which is a demanding workload for any mobile component. The GPU's pixel rate of 280.6 GPixel/s and texture rate of 761.5 GTexel/s provide the theoretical foundation for these results. The RTX 4080's average benchmark score of 54247 places it at the 86th percentile among all GPUs, and its closest competitor, the RTX 4080 SUPER, is statistically tied with a deltaPct of only 0.1%.

The 16 GB framebuffer becomes relevant when considering Roblox's tendency toward user-generated content with arbitrary texture sizes. Higher resolution texture packs and complex user-created environments can quickly consume VRAM, and the 256-bit memory bus ensures data flows efficiently to the shading units. The card's DirectX 12 Ultimate support (version 12_2) means it can leverage the latest rendering features, though Roblox's engine typically operates on more conservative paths. The 320 W TDP and triple-slot design indicate this is a performance-first component, and the data confirms that positioning — even at 4K, the GPU maintains playable frame rates across all quality presets.

Resolution Scaling

The measured FPS data reveals a clear pattern of GPU-bound scaling as resolution increases, with the CPU's influence diminishing at higher pixel counts. Starting at 1920x1080 with Low settings, the combo achieves 461 FPS average. This jumps to 308 FPS at 2560x1440 and further down to 174 FPS at 3840x2160 — each step roughly halves the pixel count transition's impact on frame rate.

Analyzing the High preset across all three resolutions provides the cleanest comparison: 371 FPS at 1080p, 248 FPS at 1440p, and 140 FPS at 4K. The scaling factor from 1080p to 1440p is approximately 0.67 (371 to 248), while from 1440p to 4K it is approximately 0.56 (248 to 140). This indicates that the GPU becomes progressively more saturated as resolution increases, which is typical for a title with relatively simple geometry but potentially heavy fill-rate demands.

The Ultra preset tells a similar story with absolute numbers: 301 FPS at 1080p, 201 FPS at 1440p, and 114 FPS at 4K. The delta between 1080p and 4K on Ultra is 187 FPS, representing a 62% drop. For comparison, on Low settings the drop from 1080p to 4K is 287 FPS (461 to 174), a 62% reduction as well. This consistency across presets suggests that resolution scaling is independent of quality settings — the GPU's workload scales predictably with pixel count.

The limiting component shifts as resolution climbs. At 1080p, the extremely high frame rates (up to 461 FPS on Low) suggest the CPU's per-thread performance and memory subsystem may be constraining maximum output, as the GPU has ample headroom. By 4K, the GPU's fill-rate and memory bandwidth become the primary bottleneck, evidenced by the more moderate frame rates across all settings. The medium preset at 4K shows a minimum FPS of 135, indicating frame time consistency even under load, while the 1440p medium minimum of 238 FPS confirms adequate headroom.

Interestingly, the scaling efficiency is not perfectly linear. The 1440p to 4K transition on High settings (248 to 140 FPS, a 44% reduction) is steeper than the 1080p to 1440p transition (371 to 248, a 33% reduction). This nonlinear behavior points to the GPU's memory bandwidth becoming a more significant factor at 4K, where the 716.8 GB/s bandwidth must service four times the pixels of 1080p.

Measured FPS Breakdown

1920x1080: The low preset delivers the highest average at 461 FPS. Medium settings reduce this to 420 FPS, with a minimum of 357 FPS and maximum of 483 FPS. High settings produce 371 FPS average, while the Ultra preset yields 301 FPS. The spread between Low and Ultra is 160 FPS, demonstrating that Roblox's quality settings have a substantial impact on performance even at 1080p.

2560x1440: At this resolution, the Low preset achieves 308 FPS average. Medium follows at 280 FPS, with a minimum of 238 FPS and maximum of 322 FPS. High settings deliver 248 FPS, and Ultra drops to 201 FPS. The gap between Low and Ultra narrows to 107 FPS at 1440p, indicating the GPU is becoming the limiting factor. The Medium preset's min-max range (238-322 FPS) shows a variance of 84 FPS, suggesting some scene dependency.

3840x2160: The most demanding resolution shows the following averages: Low at 174 FPS, Medium at 158 FPS with a minimum of 135 FPS and maximum of 182 FPS, High at 140 FPS, and Ultra at 114 FPS. The Low-to-Ultra spread narrows further to 60 FPS, reinforcing that the GPU is heavily loaded at 4K. The Medium preset maintains a respectable minimum of 135 FPS, ensuring smooth gameplay even in complex scenes.

Comparing settings across resolutions, the relative performance ordering remains consistent: Low > Medium > High > Ultra. However, the absolute differences shrink with higher resolution. At 1080p, the Ultra-to-Low gap is 160 FPS; at 1440p it's 107 FPS; at 4K it's 60 FPS. This pattern confirms that resolution has a more dominant effect on frame rate than quality settings when the GPU is already saturated.

The Medium preset consistently shows the most complete data with min and max values, providing insight into frame time stability. At 1080p Medium, the minimum of 357 FPS is still far above typical display refresh rates. At 1440p Medium, the 238 FPS minimum remains fluid. At 4K Medium, the 135 FPS minimum is still above 120 Hz thresholds for high-refresh displays.

CPU Role

The Intel Core Ultra 9 275HX serves as the system's central processor, providing 24 cores and 24 threads — a configuration without hyperthreading that emphasizes raw core count. Built on Arrow Lake-HX architecture at 3 nm, this mobile chip has a base clock of 2.70 GHz and a boost clock of 5.40 GHz. The CPU's cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3, totaling substantial on-die storage for game assets and physics calculations.

In Roblox, the CPU's role is particularly pronounced at lower resolutions where the GPU isn't the bottleneck. The 1080p Low preset result of 461 FPS suggests the CPU can drive extremely high frame rates when graphical load is minimal. The single-core performance, measured at 2204 in Cinebench R23 and 2458 in Geekbench, is critical for Roblox's main game thread, which handles input, physics, and script execution. The boost clock of 5.40 GHz provides the high single-threaded throughput needed for these tasks.

The multi-threaded capabilities are equally important for Roblox's user-generated content. Complex worlds with numerous scripts, physics objects, and networked entities can spawn many threads. The Cinebench R23 multi-core score of 35589 and Geekbench multi-core score of 20795 indicate this CPU excels at parallel workloads. The Passmark multithread score of 55759 and physics score of 3338 further quantify its capability in simulation-heavy scenarios.

The CPU's memory architecture supports DDR5 in dual-channel configuration, providing 102.4 GB/s of memory bandwidth. This is sufficient for feeding the 24 cores and maintaining smooth data flow to the GPU. The 17,800 million transistors on a 243 mm² die represent a dense 3 nm design that balances performance with power efficiency, reflected in the 55 W TDP.

Comparing to peers, the Ultra 9 275HX's average benchmark score of 67469 places it at the 94th percentile among all CPUs. Its nearest rival, the Intel Xeon w5-3525, scores 67673 with a deltaPct of -0.3%, indicating they are essentially equivalent. The AMD EPYC 4484PX trails by 0.5%, while the AMD Ryzen Threadripper PRO 5955WX is 0.6% lower. The Intel Xeon 6515P is 0.7% behind. This tight grouping shows the Ultra 9 275HX sits at the top of CPU performance, which translates to its ability to sustain high frame rates in Roblox.

At 4K Ultra, the CPU's role diminishes as the GPU becomes the constraint — the 114 FPS result is more indicative of RTX 4080's limits than CPU capability. However, the CPU's consistent performance across resolutions ensures that frame pacing remains stable, as evidenced by the medium preset minimums at each resolution.

Settings Recommendations

The measured data provides clear guidance for optimizing the Roblox experience with this hardware. At 1920x1080, all settings produce frame rates far exceeding typical display capabilities. The Low preset's 461 FPS offers no practical benefit over Medium's 420 FPS for most users, while High at 371 FPS and Ultra at 301 FPS still provide exceptional smoothness. For competitive play where every frame matters, Low or Medium minimizes input latency, but for visual quality, Ultra's 301 FPS is barely less responsive.

At 2560x1440, the recommendation shifts toward High as the sweet spot. The 248 FPS average provides a substantial improvement over Ultra's 201 FPS, while the visual difference between High and Ultra is often subtle in Roblox's art style. Medium at 280 FPS is the choice for maximum frame rate without sacrificing too much visual fidelity, and its 238 FPS minimum ensures no drops below high-refresh thresholds.

At 3840x2160, the constraints become more apparent. Ultra settings produce 114 FPS, which is playable but may not fully utilize 120 Hz displays. High settings at 140 FPS offer a better balance, providing 26 FPS more headroom. Medium at 158 FPS is the recommended preset for 4K gaming, as it maintains a 135 FPS minimum while still looking substantially better than Low's 174 FPS. The Low preset's higher frame rate comes at a significant visual cost that may not be worthwhile given the Medium preset's stability.

Across all resolutions, the Medium preset demonstrates the most consistent frame time behavior, with min-max ranges that indicate reliable performance. The data suggests that for this combo, Medium or High are the optimal presets depending on resolution. Ultra provides diminishing returns in Roblox, where the additional graphical features may not justify the frame rate cost. The 4K Ultra result of 114 FPS is still smooth for most users, but the 44 FPS improvement from High settings makes High the better choice for those prioritizing frame rate.

How This Combo Ranks

The Intel Core Ultra 9 275HX combined with the NVIDIA GeForce RTX 4080 achieves a combo rank of 1223 out of 3711 tested system combinations in Roblox. This placement in the 33rd percentile of all tested combos is notable given the high-end nature of both components. The rank reflects that while this hardware is exceptionally powerful, Roblox's engine and typical user-created content may not fully utilize the available resources, allowing some less powerful combinations to achieve comparable frame rates.

The CPU's 94th percentile ranking among all processors and the GPU's 86th percentile ranking suggest that other combinations with similarly powerful components might rank higher in Roblox specifically. The game's performance profile, which favors high single-threaded CPU performance and moderate GPU demands, means that a combination with a marginally better single-core CPU or a GPU with different characteristics could potentially rank higher.

The deltaPct values for both components' nearest rivals indicate extremely tight performance groupings. The CPU's closest rival, the Intel Xeon w5-3525, is only 0.3% different in average benchmark score, while the GPU's closest rival, the RTX 4080 SUPER, is 0.1% different. These small margins suggest that the combo's rank could shift with minor driver updates or game patches.

Given that dataIsMeasured is true, these results come from actual testing rather than estimation, adding confidence to the rank. The 3711 tested combos represent a broad sample of hardware configurations, making the 1223 rank a meaningful data point. For users with this specific setup, the rank indicates solid performance in Roblox, with the understanding that the game's scalability means even lower-ranked combos may deliver playable experiences.