Roblox

Roblox is a peculiar case in the benchmarking world because it is far more forgiving on hardware than most modern titles, and the data for the AMD Ryzen 5 8400F and NVIDIA GeForce GTX 1070 combo confirms this. The measured frames per second (FPS) are consistently high across all tested resolutions, indicating that this pairing is more than sufficient for the game's Sandbox genre demands. The core takeaway is that this system provides a fluid experience even at 4K, which is rare for a GPU of this generation, but the scaling patterns reveal where the bottlenecks actually lie.

Resolution Scaling

The FPS drop from 1080p to 4K is significant but not catastrophic, showing a clear transition from a CPU-limited state at lower resolutions to a more balanced load at higher ones. At 1080p with Low settings, the combo pushes 252 FPS, which drops to 169.8 FPS at 1440p and further to 96.4 FPS at 4K. This represents a 61.7% reduction from the peak 1080p figure down to 4K, indicating that while resolution scaling does cost performance, the absolute numbers remain playable throughout.

The pattern across all settings tells a consistent story. Moving from 1440p to 4K, the High preset falls from 133 FPS to 75.7 FPS, a 43% decrease. The Medium preset goes from 152.1 FPS to 85.1 FPS, a 44% drop, while Ultra falls from 109.9 FPS to 63.8 FPS, a 42% reduction. These consistent percentage drops suggest that the scaling is primarily driven by pixel throughput demands on the GTX 1070, though the fact that even the most demanding 4K Ultra preset still holds above 60 FPS means the GPU is never being completely overwhelmed.

The interesting detail is the delta between Low and Ultra at each resolution. At 1080p, the spread is 84.9 FPS (252 down to 167.1), but at 4K, the spread narrows to 32.6 FPS (96.4 down to 63.8). This narrowing indicates that at higher resolutions, the GPU work becomes more uniform, and the settings-based differences are compressed because the pixel fill rate becomes the dominant factor. Conversely, at 1080p, the larger spread suggests that the CPU has more headroom to feed the GPU, and the settings changes have a more pronounced effect on the final frame rate.

GPU Role

The NVIDIA GeForce GTX 1070 is an end-of-life product built on the Pascal architecture, using the GP104 chip fabricated on a 16 nm process from TSMC. Its specifications include 8 GB of GDDR5 memory on a 256-bit bus, providing 256.3 GB/s of bandwidth, with a base clock of 1506 MHz and a boost clock of 1683 MHz. The memory runs at 2002 MHz, which translates to 8 Gbps effective, and the card has 1920 shading units, 120 texture mapping units, and 64 render output units.

For Roblox specifically, the GPU's role is less about raw compute and more about consistent fill rate. The 4K High preset result of 75.7 FPS is a strong indicator that the 8 GB VRAM buffer is not being exhausted by the game's textures, and the 256-bit memory bus provides enough bandwidth to sustain high resolution rendering. The card's PassMark G3D score of 13498 places it in the 51st percentile of all GPUs, with its nearest rival being the NVIDIA Quadro K4200 at a 0.7% delta, meaning the GTX 1070 is positioned in the middle of the pack historically.

The boost clock behavior is crucial here. Roblox's relatively simple geometry and shader work allows the GPU to maintain high clocks without thermal throttling, which explains why the 4K Ultra preset still achieves 63.8 FPS. The data suggests that the GPU is the limiting factor only at 4K Ultra, where the 6.463 TFLOPS of FP32 performance is being stretched. At lower resolutions, the GPU is likely idling between frames, as evidenced by the massive FPS numbers that far exceed what most modern games would produce.

CPU Role

The AMD Ryzen 5 8400F is a Zen 4 architecture part built on the Phoenix codename, manufactured on a 4 nm process by TSMC. It features 6 cores and 12 threads, with a base clock of 4.20 GHz and a boost clock of 4.70 GHz. The cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache, with support for DDR5 memory on a dual-channel bus providing 83.2 GB/s of bandwidth.

In Roblox, the CPU's role is primarily about maintaining a high frame ceiling, and the 8400F excels here. The Cinebench R23 multicore score of 20851 and single-core score of 2943 indicate strong per-thread performance, which is critical for a game that often relies on a few primary threads for game logic and physics. The PassMark single-thread score of 3684 reinforces this, showing that the CPU can process individual instruction streams quickly without stalling.

The data reveals that at 1080p Low, the combo hits 252 FPS, which is likely approaching the CPU's limit for generating draw calls and updating the game state. The 3DMark 2-thread score of 1874 and 4-thread score of 3563 suggest that Roblox's engine is not fully utilizing all 12 threads, but the high single-core performance ensures that the main game thread is never the bottleneck. The 8400F's percentile ranking at 82 against all CPUs, with its nearest rival being the AMD Ryzen 7 2700X at a 0% delta, confirms that it is a high-performing mid-range part.

The fact that 4K Ultra still yields 63.8 FPS means the CPU is capable of feeding the GPU even under the heaviest settings, but the scaling from 1080p to 4K shows that the CPU headroom is being traded for GPU load. This is a healthy balance for a system of this vintage.

How This Combo Ranks

The combination of the Ryzen 5 8400F and GTX 1070 ranks 1513 out of 1800 tested combos in Roblox, placing it in the lower-middle range of the database. This ranking might seem low given the high FPS numbers, but it reflects the fact that Roblox is not a demanding title, and many newer or higher-end combinations can achieve even higher frame rates, especially at 1080p.

The rank is likely influenced by the GPU's age relative to the database's other tested hardware. The GTX 1070's average benchmark score of 12331 places it in the 51st percentile, meaning half of all tested GPUs outperform it. However, the CPU's strength compensates somewhat, as the 8400F's average benchmark score of 25064 places it in the 82nd percentile, with its nearest rival being the AMD Ryzen AI 5 PRO 340 at a -0.1% delta.

In practical terms, this ranking means that while the combo is not at the top tier, it is far from the bottom. The measured FPS data shows that the system is capable of delivering a smooth experience at all settings and resolutions, which is what matters for actual gameplay. The rank also suggests that there is headroom for improvement if a user were to pair the CPU with a more modern GPU, but as tested, the system does its job without issue.

Settings Recommendations

Based on the measured FPS rows, the optimal experience depends on the user's display resolution and refresh rate. At 1080p, the Medium preset delivers 231.8 FPS, which is only slightly below the Low preset's 252 FPS but offers better visual quality. The High preset at 199.5 FPS is still well above 144 Hz, making it a viable choice for high-refresh monitors. The Ultra preset at 167.1 FPS is also playable, but the marginal visual gains over High may not justify the 16% FPS reduction.

For 1440p users, the Medium preset at 152.1 FPS is the sweet spot, as it provides a substantial improvement over High's 133 FPS while still maintaining a very fluid experience. The Low preset at 169.8 FPS is the best choice if maximum frame rate is the priority, but the visual sacrifices are noticeable. At 4K, the High preset at 75.7 FPS is the recommended balance, as it offers a significant improvement over Ultra's 63.8 FPS while still looking good. The Low preset at 96.4 FPS is acceptable for competitive play, but the Medium preset at 85.1 FPS is a better compromise.

The data suggests that Ultra is never the best choice for this combo, as the performance cost is disproportionately high relative to the visual benefit. The High or Medium presets provide the best frame rate per visual quality ratio across all resolutions.

FAQ

Q: What is the highest FPS this combo can achieve in Roblox?

A: The highest measured FPS is 252, achieved at 1920x1080 resolution with Low settings. This is the peak frame rate in the dataset.

Q: Can this system handle 4K gaming in Roblox?

A: Yes, it can. The 4K High preset delivers 75.7 FPS, and even the 4K Ultra preset maintains 63.8 FPS, which is above the 60 FPS threshold for smooth play.

Q: How does the GTX 1070 compare to its closest rival in the database?

A: The GTX 1070 has an average benchmark score of 12331, which is 0.7% higher than the NVIDIA Quadro K4200's score of 12241. It also outperforms the GeForce GTX 880M by 1.3%.

Q: Is the Ryzen 5 8400F a strong CPU for this game?

A: Yes, the CPU's single-thread performance is excellent, with a PassMark single-thread score of 3684 and a Cinebench R23 single-core score of 2943, which ensures the main game thread runs efficiently.

Q: What is the best preset to use at 1440p?

A: The Medium preset at 1440p delivers 152.1 FPS, which is the best balance of visual quality and performance. The Low preset is faster at 169.8 FPS but looks worse.

Q: How much FPS is lost when going from 1080p to 4K on High settings?

A: At High settings, the FPS drops from 199.5 at 1080p to 133 at 1440p, and finally to 75.7 at 4K. This represents a 62% reduction from 1080p to 4K.