Roblox

Roblox is a sandbox title from 2006 that places light, variable demands on hardware depending on user-generated content. The Intel Core i5-9400 paired with the NVIDIA GeForce RTX 4070 Ti is a measured combination, and the data shows it is positioned at rank 271 out of 1800 tested combos. This places it in the top 15% of all configurations, a strong showing that reflects the GPU's high-end capabilities. The performance profile is consistent, with the system delivering high frame rates across all tested settings and resolutions.

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

The Intel Core i5-9400 is a 6-core, 6-thread processor from the Coffee Lake architecture, built on a 14 nm process. It has a base clock of 2.90 GHz and a boost clock of 4.10 GHz. In Roblox, which often relies on single-thread performance for physics and game logic, this processor's boost clock is a critical factor. The benchmark data shows a Cinebench R23 single-core score of 1125, which is modest compared to modern processors but sufficient for a game that does not typically scale heavily with multi-threading.

The CPU's 9 MB of shared L3 cache and 42.7 GB/s memory bandwidth are adequate for feeding the GPU in this context. At lower resolutions like 1920x1080, the CPU becomes more relevant, as the system is less GPU-bound. The measured FPS at 1080p Low is 554.1, which suggests the CPU is capable of driving very high frame rates, but the data indicates that the RTX 4070 Ti is the dominant component in this pairing. The i5-9400's percentile rank among all CPUs is 50, meaning it sits exactly at the median, which is a balanced match for a high-end GPU in a less demanding title like Roblox.

Compared to its nearest rivals in synthetic benchmarks, the i5-9400 has an average score of 2305. It sits 0.2% above the Intel Core i3-10305 and 0.2% above the Intel Core i3-1125G4, but 0.6% below the Intel Core i7-8809G. These deltas are negligible, indicating that the CPU's performance is in a tight band. In Roblox, this means the processor is unlikely to be a bottleneck, especially at higher resolutions where the GPU takes on more of the workload. The CPU's 65 W TDP and end-of-life production status are notable, but they do not detract from its measured performance in this specific game.

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

The NVIDIA GeForce RTX 4070 Ti is the clear performance leader in this combo. It is built on the Ada Lovelace architecture with a 5 nm process, featuring 7680 shading units and 60 RT cores. The GPU has a base clock of 2310 MHz and a boost clock of 2610 MHz, with 12 GB of GDDR6X memory on a 192-bit bus. This memory configuration provides 504.2 GB/s of bandwidth, which is more than sufficient for Roblox's texture and shader demands, even at 4K resolution.

The GPU's raw compute power is substantial, with an FP32 performance of 40.09 TFLOPS. In the measured FPS data, this translates to a minimum of 145.7 FPS at 4K Ultra settings, which is exceptionally high for any game. The GPU's percentile rank among all GPUs is 85, placing it well above the median and indicating that it is a high-end part. Its nearest rival, the NVIDIA GeForce RTX 5090 Mobile, has a 0.6% higher average score, while the Intel Arc A730M is 1.5% higher, but the RTX 4070 Ti outperforms the AMD Radeon Pro 580 by 1.6%.

In Roblox, the GPU's role is to render the blocky environments and effects at high frame rates. The 12 GB VRAM is ample for any user-generated content, and the 21 Gbps effective memory speed ensures that texture streaming is not a bottleneck. The data shows that the GPU is not the limiting factor at any tested resolution, as even the lowest FPS figure (145.7 at 4K Ultra) is well above playable thresholds. The GPU's launch MSRP is 799 USD, and its end-of-life status does not affect its measured performance.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the Intel Core i5-9400 and NVIDIA GeForce RTX 4070 Ti ranks 271 out of 1800 tested combos in Roblox. This places the system in the top 15.1% of all configurations, which is a strong result given the CPU's mid-range standing. The ranking suggests that the GPU is doing most of the heavy lifting, as the CPU's median percentile score (50) would typically drag a combo down, but the GPU's high percentile (85) compensates.

This rank is notable because it shows that Roblox is not a CPU-intensive game in this pairing. Many combos with faster processors but slower GPUs would likely rank lower, as the game's frame rates are more dependent on the graphics card. The data indicates that the RTX 4070 Ti boosts this combo well above the average, making it a capable system for high-refresh-rate monitors. The gap between this combo and the top-ranked ones is likely due to the CPU's limited multi-threading, but in a game like Roblox, this has minimal impact on the measured FPS.

The rank of 271 out of 1800 also implies that there are 1529 combos that perform worse, which underscores the effectiveness of the GPU. For a player seeking maximum performance in Roblox, this combo is well-positioned, though it is not at the absolute top. The data does not provide specific scores for other combos, but the rank alone is a clear indicator of the system's standing relative to the broader test pool.

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

At 1920x1080, the combo delivers exceptional performance across all settings. The Low preset yields an average of 554.1 FPS, while Medium produces 535.2 FPS. High settings drop slightly to 473.1 FPS, and Ultra is the most demanding at 384.9 FPS. These numbers show that even at Ultra, the system is far from being stressed, with a delta of 169.2 FPS between Low and Ultra.

Moving to 2560x1440, the frame rates remain high but show a more pronounced scaling. Low settings average 396.3 FPS, Medium delivers 357.4 FPS, and High produces 315 FPS. Ultra settings at 1440p yield 258 FPS, which is still very smooth. The drop from 1080p Ultra (384.9) to 1440p Ultra (258) is a 33% reduction, indicating that the GPU is beginning to work harder but still has headroom.

At 3840x2160, the system remains playable but the scaling is more evident. Low settings average 220.8 FPS, Medium delivers 203.2 FPS, and High produces 177.9 FPS. Ultra settings at 4K average 145.7 FPS, which is the lowest measured figure but still well above the typical 60 FPS target. The difference between 1080p Ultra and 4K Ultra is 239.2 FPS, showing a significant drop that is expected with a 4x pixel count increase. The data shows consistent performance across all settings, with no anomalies or stutters indicated.

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

The FPS scaling from 1080p to 4K reveals the system's bottleneck characteristics. At Low settings, the drop from 554.1 FPS at 1080p to 220.8 FPS at 4K is a 60.2% reduction. At Medium settings, the drop is from 535.2 to 203.2 FPS, a 62% reduction. High settings fall from 473.1 to 177.9 FPS, a 62.4% reduction, and Ultra settings drop from 384.9 to 145.7 FPS, a 62.1% reduction.

This consistent ~62% reduction across all settings is a classic sign of a GPU-bound scenario. When the resolution increases, the GPU's workload scales linearly with pixel count, while the CPU's workload remains relatively constant. The data indicates that the RTX 4070 Ti is the limiting factor at 4K, as the frame rates are directly tied to the GPU's rendering capabilities. The i5-9400 is not a bottleneck here, as the FPS does not plateau at a CPU-imposed limit.

The scaling also shows that the GPU is not fully utilized at 1080p, where frame rates exceed 500 FPS in some settings. This suggests that the CPU or game engine is capping performance at lower resolutions. However, the drop to 4K brings the system into a more balanced state, where the GPU is the primary driver. The fact that 4K Ultra still averages 145.7 FPS demonstrates that this combo has substantial headroom for Roblox, even at the highest settings and resolution tested.

FAQ

Q: What is the combo's rank among all tested systems in Roblox?

A: The Intel Core i5-9400 and NVIDIA GeForce RTX 4070 Ti combo ranks 271 out of 1800 tested combos.

Q: What is the highest average FPS measured for this combo?

A: The highest average FPS is 554.1, achieved at 1920x1080 with Low settings.

Q: How does the CPU compare to its nearest rival in synthetic benchmarks?

A: The i5-9400 has an average benchmark score of 2305, which is 0.2% higher than the Intel Core i3-10305 but 0.6% lower than the Intel Core i7-8809G.

Q: What is the lowest average FPS recorded, and at what settings?

A: The lowest average FPS is 145.7, recorded at 3840x2160 with Ultra settings.

Q: Is the GPU or CPU the limiting factor at 4K resolution?

A: The data shows the GPU is the limiting factor at 4K, as FPS drops by approximately 62% across all settings when moving from 1080p to 4K, consistent with GPU-bound scaling.

Q: What is the GPU's memory configuration?

A: The GPU has 12 GB of GDDR6X memory on a 192-bit bus, providing 504.2 GB/s of bandwidth.