Roblox

Roblox is a sandbox title that rarely stresses high-end hardware, yet the combination of the Intel Core Ultra 5 225 and the NVIDIA GeForce RTX 4090 produces an extraordinary range of frame rates, from 711 FPS at 1080p Low down to 175 FPS at 4K Ultra. The data shows that this pairing is overwhelmingly GPU-bound at higher resolutions, while at 1080p, the CPU's 10 cores and 4.90 GHz boost clock become the primary driver, creating a performance profile that flips depending on the workload.

FAQ

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

A: The highest average FPS is 711, achieved at 1920x1080 with the Low settings preset. This is followed closely by 647 FPS at Medium and 572 FPS at High settings for the same resolution.

Q: How much of a performance gap exists between the Low and Ultra presets at 4K?

A: At 3840x2160, the Low preset delivers 268 FPS average, while the Ultra preset drops to 175 FPS average. This represents a 93 FPS difference, or approximately a 34.7% reduction in frame rate when moving from the lowest to the highest quality settings.

Q: Does the RTX 4090's 24 GB of VRAM ever become a limiting factor in Roblox?

A: The data indicates no. The measured FPS values remain exceptionally high across all settings, and the 24 GB GDDR6X memory with 1.01 TB/s bandwidth is far beyond what a game of this visual complexity requires. There are no signs of texture thrashing or memory-related stutters in the results.

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

A: This specific CPU and GPU pairing ranks 135th out of 3010 tested combos in the database. This places it in the top 4.5% of all configurations, which is strong but not the absolute top, suggesting that other CPUs may push the RTX 4090 even harder in this CPU-sensitive title.

Q: How does the Intel Core Ultra 5 225 compare to its nearest rival in synthetic benchmarks?

A: The CPU's average benchmark score of 36938 is essentially tied with the AMD Ryzen 5 5600F, which scores 36945, a deltaPct of 0. It is also within 0.5% of the Intel Core i9-12900T, which scores 37112, showing that this mid-range chip trades blows with older high-end parts.

Q: Is there a measurable difference in frame times between the Medium and High presets?

A: Yes, the data shows that at 2560x1440, the Medium preset has a minimum FPS of 367 and a maximum of 496, while the High preset averages 382 FPS. The Medium preset's average of 432 FPS indicates it maintains a higher floor, but the High preset's average is lower, suggesting that the extra graphical load impacts sustained performance.

GPU Role

The NVIDIA GeForce RTX 4090 is the undisputed heavyweight in this pairing, and its role in Roblox is to provide an almost absurd level of headroom. With a boost clock of 2520 MHz and 16384 shading units, the GPU is capable of far more than this game demands, which is why we see frame rates in the hundreds even at 4K resolution. The memory subsystem is equally over-provisioned: 24 GB of GDDR6X on a 384-bit bus yields 1.01 TB/s of bandwidth, ensuring that no texture load or draw call can ever starve the rendering pipeline.

Interestingly, the GPU's benchmark data shows it ranks 88th percentile among all GPUs, with an average score of 60347. The nearest rival, the Intel Arc Pro A60, matches it with a score of 60326 and a deltaPct of 0, which is a surprising result on paper. However, the measured Roblox FPS tells a different story: the RTX 4090's raw compute power (82.58 TFLOPS FP32) and 128 RT cores are assets that the Arc Pro A60 simply cannot match in a real-world gaming scenario, even if their aggregate benchmark scores are close.

The GPU's role shifts dramatically across resolutions. At 1080p, the RTX 4090 is often idle, waiting for the CPU to feed it data. This is evident in the massive FPS jump from 464 (Ultra) to 711 (Low), which is a 53% increase that is driven almost entirely by reducing the CPU's workload, not by increasing GPU throughput. At 4K, the GPU finally gets to stretch its legs, but even then, the RTX 4090 is never the bottleneck; it simply scales up the rendering load without breaking a sweat, as shown by the 175 FPS floor at 4K Ultra.

The data suggests that the RTX 4090's role is to eliminate any possibility of a GPU-side frame rate cap. The 450 W TDP and triple-slot cooler are overkill for this game, but they ensure that the card remains stable and cool even when pushing 281 FPS at 4K Medium. This is a configuration where the GPU is a luxury, not a necessity, and its performance is so far beyond the game's requirements that the limiting factor is always elsewhere.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals a classic CPU-bound to GPU-bound transition. At 1080p Low, the combo hits 711 FPS, but this drops to 474 FPS at 1440p and then to 268 FPS at 4K. This is a 62% reduction from 1080p to 4K, which is a substantial hit, but it is not proportional to the 4x increase in pixel count (from ~2 million to ~8.3 million pixels). If the GPU were the sole bottleneck, we would expect a much steeper drop; the fact that 4K Low still produces 268 FPS indicates that the RTX 4090 has ample compute to spare.

Looking at the Ultra preset, the scaling is even more telling. At 1080p, we see 464 FPS, which falls to 310 FPS at 1440p and then 175 FPS at 4K. The drop from 1440p to 4K is 135 FPS (43.5%), which is more significant than the drop from 1080p to 1440p (154 FPS, or 33.2%). This suggests that as resolution increases, the GPU becomes a more active participant, but the CPU is still holding back performance at the lower resolutions.

A key observation is that the FPS differences between resolutions are not linear. At 1080p, the difference between Low and Ultra is 247 FPS, but at 4K, this difference narrows to 93 FPS. This compression of the performance gap at higher resolutions is a classic sign of a CPU bottleneck at 1080p. When the CPU is the limiter, changing graphical settings has a smaller impact on FPS because the CPU is already working at its maximum capacity. At 4K, the GPU takes over the workload, and the settings have a more pronounced effect, but even then, the absolute FPS remains high.

The data also shows that the minimum FPS values, where recorded, follow a similar pattern. At 1080p Medium, the minimum is 550 FPS, which drops to 367 FPS at 1440p Medium and 208 FPS at 4K Medium. These minimums are still remarkably high, indicating that there are no catastrophic frame drops or stutters, even under load. The implication is that this system is so powerful that resolution scaling is more about the game's engine overhead than any real hardware limitation.

Measured FPS Breakdown

At 1920x1080, the results are staggering. The Low preset delivers 711 FPS average, which is the highest score in the entire dataset. Medium settings produce 647 FPS (with a minimum of 550 and maximum of 744), High drops to 572 FPS, and Ultra sits at 464 FPS. The spread from Low to Ultra is 247 FPS, showing that the CPU is highly sensitive to the increased draw calls and physics calculations that higher presets require.

Moving to 2560x1440, the frame rates remain extremely high but begin to show more differentiation. Low settings yield 474 FPS, Medium averages 432 FPS (with a 367-496 range), High hits 382 FPS, and Ultra falls to 310 FPS. The gap between Low and Ultra here is 164 FPS, which is narrower than at 1080p, suggesting the GPU is starting to absorb some of the additional load from the higher resolution.

At 3840x2160, the results are still impressive but show the greatest sensitivity to settings. Low produces 268 FPS, Medium averages 244 FPS (with a 208-281 range), High drops to 216 FPS, and Ultra bottoms out at 175 FPS. The Low-to-Ultra gap is now only 93 FPS, indicating that the GPU is becoming the primary bottleneck at this resolution, but it is still a very capable bottleneck, as 175 FPS at 4K Ultra is an excellent result.

It is notably the Medium preset is the only one with recorded minimum and maximum FPS values across all resolutions. At 1080p, the minimum is 550 and the maximum is 744; at 1440p, the minimum is 367 and the maximum is 496; and at 4K, the minimum is 208 and the maximum is 281. These ranges show that the Medium preset has a wider variance in frame times, likely due to its balanced workload between CPU and GPU, but the minimums are still comfortably above any threshold for smooth gameplay.

How This Combo Ranks

In the database of tested system combinations for Roblox, this pairing of the Intel Core Ultra 5 225 and the NVIDIA GeForce RTX 4090 achieves a rank of 135 out of 3010 combinations. This places it in the top 4.5% of all systems, which is a strong showing, but the ranking also reveals that there is room for improvement. Given the RTX 4090's raw power, the fact that it does not crack the top 100 suggests that the CPU is holding back the overall performance in this specific game.

The CPU's benchmark percentile is 85%, and its average score of 36938 is nearly identical to the AMD Ryzen 5 5600F (36945, deltaPct 0). This is a critical data point because it shows that the Ultra 5 225 is not a top-tier CPU in synthetic tests; it is a solid mid-range part that performs on par with older chips. In a game like Roblox, which is known to be heavily single-threaded, the CPU's single-core performance (Cinebench R23 single-core score of 3655) becomes the determining factor for maximum FPS.

The GPU, on the other hand, ranks 88th percentile among all GPUs, with an average score of 60347. Its nearest rival, the Intel Arc Pro A60, is nearly identical in aggregate benchmarks (60326, deltaPct 0), but the RTX 4090's gaming performance is in a different league. The fact that this combo ranks 135th overall suggests that there are 134 other combinations that achieve higher FPS in Roblox, likely with faster CPUs like the Core Ultra 9 or Ryzen 7 series, which can feed the RTX 4090 even more draw calls at 1080p.

The ranking also implies that the RTX 4090 is underutilized in this pairing. The GPU's massive 24 GB VRAM and 82.58 TFLOPS are never fully taxed, and the system's performance is capped by the CPU's ability to process the game's logic. This is not a criticism of the CPU, but rather an observation that Roblox is an unusual game where high-end GPUs cannot reach their full potential without an equally high-end CPU.

Settings Recommendations

The measured data provides a clear picture of which settings preset offers the best experience, and the answer depends on the display resolution. At 1920x1080, the Low preset delivers 711 FPS, but this is likely beyond the refresh rate of most monitors. The Medium preset, at 647 FPS, offers a better visual quality with only a 9% performance penalty, making it the sweet spot for high-refresh-rate displays. High settings at 572 FPS are also viable, but the jump to Ultra at 464 FPS sacrifices 28% of the frame rate for marginal visual gains.

At 2560x1440, the Medium preset at 432 FPS is again the recommended choice. It provides a minimum FPS of 367, which is well above the threshold for smooth gameplay, and it offers a significant visual upgrade over Low. The High preset at 382 FPS is also a strong option, but the 50 FPS difference between Medium and High is not justified by the visual improvements in a game like Roblox, which has a relatively simple graphical style. Ultra at 310 FPS is playable but pushes the system harder for little benefit.

At 3840x2160, the situation is slightly different. The Low preset at 268 FPS is the highest, but Medium at 244 FPS is only a 9% reduction and provides a much better image quality. This makes Medium the recommended preset for 4K, as it balances the 208 FPS minimum with the enhanced visual fidelity. High settings at 216 FPS are also acceptable, but Ultra at 175 FPS is the only preset that risks dropping below the 144 Hz threshold, making it a less ideal choice for competitive play.

Overall, the Medium preset is the most consistent recommendation across all resolutions. It offers the best balance of frame rate and visual quality, with measured minimums that never fall below 208 FPS. For users with 144 Hz or 240 Hz monitors, the High preset is also viable, but Ultra is only recommended for those who prioritize image quality over raw FPS.

CPU Role

The Intel Core Ultra 5 225 plays a critical, and often limiting, role in this configuration. With 10 cores and 10 threads, a base clock of 3.30 GHz, and a boost clock of 4.90 GHz, this CPU is a capable mid-range part, but it is not a flagship. Its Cinebench R23 multi-core score of 25891 and single-core score of 3655 are respectable, but they place it in the 85th percentile of all CPUs, meaning there are faster chips available.

In Roblox, the CPU's role is to handle the game's simulation logic, which is notoriously single-threaded. The data shows this clearly: at 1080p, the FPS scales dramatically with settings (711 to 464 FPS), which is a direct result of the CPU's workload increasing as more objects, scripts, and physics are processed. The CPU's 20 MB of shared L3 cache and 3 MB per-core L2 cache help keep frequently accessed data close at hand, but the 10 threads are not enough to fully saturate the RTX 4090 at lower resolutions.

The CPU's benchmark comparisons are revealing. Its average score of 36938 is almost identical to the AMD Ryzen 5 5600F (36945, deltaPct 0), which is an older, less expensive part. This suggests that the Ultra 5 225 does not offer a meaningful performance advantage over previous generations in multi-threaded workloads. However, its single-thread performance, as shown by the Passmark single-thread score of 4412, is strong, which is why it can still push 711 FPS in a game that is largely dependent on a single core's speed.

The data implies that if a user were to pair the RTX 4090 with a higher-end CPU, such as the Core Ultra 9 or a Ryzen 7 with more cache and higher clocks, the FPS at 1080p could be even higher. The fact that this combo ranks 135th out of 3010 suggests that there are 134 other systems that achieve better results, likely due to faster CPUs. This is not a failure of the Ultra 5 225, but rather an indication that Roblox is a unique title where CPU speed is more important than GPU power, and this CPU, while good, is not the absolute best for this specific task.