Roblox

Roblox, a sandbox title from 2006, presents an unusual benchmarking scenario for the Intel Core i7-13700K and NVIDIA GeForce RTX 4080 combination. The measured data suggests this pairing is heavily CPU-bound at lower resolutions, with the GPU only becoming a significant factor at 4K. This analysis walks through the measured FPS, component roles, and ranking within the database.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals a classic CPU bottleneck that gradually shifts toward the GPU as pixel count increases. At 1920x1080 with Low settings, the combo achieves 643 FPS, which drops to 429 FPS at 2560x1440 and further to 243 FPS at 3840x2160. This represents a 62% reduction in frame rate from 1080p to 4K, indicating that the CPU is the limiting factor at lower resolutions.

The pattern holds across all settings presets. At High settings, the frame rate drops from 517 FPS at 1080p to 345 FPS at 1440p and finally 195 FPS at 4K. The scaling between 1080p and 1440p shows a 33% decrease, while the drop from 1440p to 4K is 43%. This non-linear scaling suggests the RTX 4080 begins to assert its workload at higher resolutions, but the CPU still maintains a strong presence even at 4K.

The Medium settings row provides the only complete min/max data in the pack. At 1080p Medium, the average is 585 FPS with a minimum of 497 and maximum of 673. Moving to 1440p Medium, the average falls to 390 FPS (min 332, max 449), and at 4K Medium it reaches 221 FPS (min 188, max 254). The spread between minimum and maximum FPS narrows as resolution increases, from 176 FPS at 1080p to 66 FPS at 4K, indicating more consistent frame pacing when the GPU is more heavily utilized.

The Ultra preset shows the most dramatic resolution scaling. At 1080p Ultra, the combo produces 420 FPS, which drops to 280 FPS at 1440p and 158 FPS at 4K. The 62% drop from 1080p to 4K for Ultra is steeper than the 58% drop for High settings, suggesting that the higher graphical load at Ultra disproportionately impacts the GPU at 4K.

What the data shows is that this system is never truly GPU-bound at 1080p, even at Ultra settings. The fact that Low settings at 1080p produce 643 FPS while Ultra produces 420 FPS indicates the CPU is holding back the RTX 4080 from reaching its full potential. Only at 4K does the GPU workload become substantial enough to narrow the gap between settings presets, with Low at 243 FPS versus Ultra at 158 FPS.

CPU Role

The Intel Core i7-13700K is a 16-core, 24-thread processor based on Raptor Lake architecture, built on a 10 nm process. Its base clock of 3.40 GHz can boost to 5.40 GHz, and it has a 125 W TDP. The cache hierarchy includes 80 KB of L1 per core, 2 MB of L2 per core, and 30 MB of shared L3 cache. This configuration places it in the 89th percentile among all CPUs in the database.

Benchmark results show the i7-13700K's multi-threaded strength. In Cinebench R23, it scores 30745 in multi-core and 2116 in single-core. The 3DMark results are particularly relevant for gaming: 10717 in the 16-thread test, 8193 in 8-thread, 4469 in 4-thread, and 2262 in 2-thread. The single-thread score of 1136 in 3DMark is modest but adequate for Roblox's engine.

Roblox, being a sandbox game with physics and scripting, tends to rely on a few heavily loaded threads. The i7-13700K's strong single-core performance, evidenced by the 303 Cinebench R15 single-core score and 4333 PassMark single-thread score, is what enables the extremely high frame rates seen at 1080p. The boost clock of 5.40 GHz is critical for maintaining these frame rates under variable game logic loads.

The CPU's nearest rivals in overall benchmark score include the AMD Ryzen 9 5900 with a score of 46971 (0.2% higher), the AMD Ryzen AI 9 HX PRO 375 at 47022 (0.3% higher), the AMD Ryzen 9 7845HX at 46654 (0.5% lower), and the Intel Xeon w3-2535 at 46653 (0.5% lower). The i7-13700K's average benchmark score of 46881 places it squarely in this competitive field, with deltas of less than one percent in either direction.

Given that the 1080p Low setting reaches 643 FPS, the data suggests the CPU is delivering close to its maximum possible frame output in Roblox. The fact that Ultra settings at 1080p still achieve 420 FPS indicates the CPU has enough headroom to handle increased draw calls and physics calculations without dropping below competitive frame rates.

Settings Recommendations

The measured data provides clear guidance on which settings preset offers the best experience. At 1920x1080, the High preset delivers 517 FPS, which is 73 FPS lower than Low (643 FPS) but 97 FPS higher than Ultra (420 FPS). The Medium preset sits at 585 FPS, offering a balanced middle ground. Given that all presets exceed 400 FPS at 1080p, users can prioritize visual quality without sacrificing playability.

At 2560x1440, the High preset produces 345 FPS, which is a 20% reduction from Low (429 FPS) but a 23% improvement over Ultra (280 FPS). The Medium preset at 390 FPS represents the best compromise, providing a 45 FPS advantage over High while maintaining a 110 FPS lead over Ultra. For most users, Medium appears to be the sweet spot at 1440p.

The 4K resolution presents a different tradeoff. High settings yield 195 FPS, while Medium achieves 221 FPS and Low reaches 243 FPS. Ultra drops to 158 FPS. The gap between Medium and High is 26 FPS, while the gap between High and Ultra is 37 FPS. At 4K, the data suggests that Medium provides the best experience, as the frame rate remains well above 200 FPS while the visual improvement over Low is substantial.

The Ultra preset consistently delivers the lowest frame rates across all resolutions, with the largest penalty occurring at 4K where it drops to 158 FPS. While this is still a playable frame rate, the 30% reduction compared to High (which offers 195 FPS) may not be justified by the visual gains in a game like Roblox, where the art style is intentionally simple.

How This Combo Ranks

The Intel Core i7-13700K and NVIDIA GeForce RTX 4080 combination ranks 250th out of 3711 tested combos in Roblox, placing it in the top 7% of all systems. This ranking reflects the CPU-heavy nature of the game, where the i7-13700K's high single-thread performance is more valuable than the RTX 4080's raw graphics power.

The combo's position in the database is notable given the hardware's capabilities. The RTX 4080, with its 16 GB of GDDR6X memory and 716.8 GB/s bandwidth, is a top-tier GPU, but in Roblox it is often underutilized. The GPU's percentile ranking of 86th among all GPUs is high, yet the measured FPS at 1080p suggests the CPU is the primary determinant of performance.

Comparing to other combos, the 250th rank out of 3711 indicates that many systems with less powerful CPUs but similar GPUs may achieve comparable results. The i7-13700K's average benchmark score of 46881, which is nearly identical to its nearest rivals, suggests that the CPU choice matters less than the platform's ability to maintain high single-thread clocks.

The ranking also reflects the game's age and optimization level. Roblox, released in 2006, does not leverage the multi-threading capabilities that modern titles use. The i7-13700K's 24 threads are largely idle, and the game likely runs on one or two cores, which explains why the CPU's 2-thread 3DMark score of 2262 is more relevant than its max-thread score of 12412.

GPU Role

The NVIDIA GeForce RTX 4080 is based on the AD103 chip using Ada Lovelace architecture, built on a 5 nm process at TSMC. It features 9728 shading units, 304 texture mapping units, and 112 raster output units. The GPU has 76 ray tracing cores and 304 tensor cores, with a base clock of 2205 MHz and boost clock of 2505 MHz. Its 16 GB of GDDR6X memory runs at 1400 MHz (22.4 Gbps effective) across a 256-bit bus, providing 716.8 GB/s of bandwidth.

In Roblox, the RTX 4080's role is primarily to handle resolution scaling and visual effects. At 1080p, the GPU is rarely the bottleneck, as evidenced by the 643 FPS at Low settings. The GPU's compute capabilities, reflected in its PassMark G3D score of 34457 and Geekbench OpenCL score of 214739, are more than sufficient for the game's moderate graphics demands.

The GPU's nearest rivals in benchmark scores include the RTX 4080 SUPER at 54209 (0.1% higher), the AMD Radeon Pro W5700X at 54828 (1.1% higher), the AMD Radeon RX 6750 GRE 12 GB at 55698 (2.6% higher), and the AMD Radeon 8060S at 55757 (2.7% higher). The RTX 4080's average benchmark score of 54247 places it just below these competitors, but the differences are within a few percentage points.

At 4K, the RTX 4080's memory bandwidth becomes more relevant. The 716.8 GB/s bandwidth and 16 GB memory capacity allow for high-resolution textures without stuttering. The 221 FPS at 4K Medium demonstrates that the GPU can sustain high frame rates even at 3840x2160, with the minimum FPS of 188 indicating acceptable frame pacing.

The GPU's 48.74 TFLOPS of FP32 performance and 761.5 GTexel/s texture rate are substantial, but Roblox's simple geometry and lighting mean these resources are underutilized. The RTX 4080's ray tracing and tensor cores are likely idle, as the game does not support these features. This explains why the GPU's ranking in Roblox (86th percentile) is lower than its overall hardware capability would suggest.

FAQ

Q: Why does the frame rate drop so significantly from 1080p to 4K?

A: The measured data shows a 62% reduction in FPS at Low settings from 1080p (643 FPS) to 4K (243 FPS). This indicates the CPU is the limiting factor at 1080p, while the GPU becomes more heavily utilized as resolution increases, gradually shifting the bottleneck.

Q: Is the RTX 4080 underutilized in Roblox?

A: Yes, the data suggests the GPU is not the primary bottleneck at 1080p. At Low settings, the CPU produces 643 FPS, which is likely near the game's engine limit. The GPU's full capability only becomes evident at 4K, where frame rates drop to more typical levels.

Q: What is the best settings preset at 1440p?

A: Based on the measured rows, Medium settings at 2560x1440 provide 390 FPS, which is 45 FPS higher than High (345 FPS) and 110 FPS higher than Ultra (280 FPS). Medium offers the best balance of visual quality and frame rate.

Q: How does the i7-13700K compare to its nearest rivals?

A: The i7-13700K's average benchmark score of 46881 is within 0.5% of the AMD Ryzen 9 5900 (46971), AMD Ryzen AI 9 HX PRO 375 (47022), AMD Ryzen 9 7845HX (46654), and Intel Xeon w3-2535 (46653). The differences are negligible in real-world gaming.

Q: Does the 4K Ultra setting deliver playable frame rates?

A: The 4K Ultra preset averages 158 FPS, which is above the 144 FPS threshold commonly considered smooth. However, this is 37 FPS lower than High (195 FPS) and 63 FPS lower than Medium (221 FPS), so users may prefer lower settings.

Q: Why does the combo rank 250th out of 3711 combos?

A: The ranking reflects the CPU-bound nature of Roblox. While the RTX 4080 is a powerful GPU (86th percentile), the i7-13700K's single-thread performance determines the outcome. Many combos with similar CPU performance but weaker GPUs achieve comparable or better frame rates.

Measured FPS Breakdown

At 1920x1080, the measured average frame rates are as follows: Low settings produce 643 FPS, Medium produces 585 FPS (min 497, max 673), High produces 517 FPS, and Ultra produces 420 FPS. The spread from Low to Ultra is 223 FPS, indicating that the CPU can maintain high frame rates regardless of graphics load.

At 2560x1440, the average frame rates are: Low at 429 FPS, Medium at 390 FPS (min 332, max 449), High at 345 FPS, and Ultra at 280 FPS. The spread narrows to 149 FPS, showing the GPU beginning to influence performance. The Medium preset's minimum of 332 FPS remains well above typical display refresh rates.

At 3840x2160, the average frame rates are: Low at 243 FPS, Medium at 221 FPS (min 188, max 254), High at 195 FPS, and Ultra at 158 FPS. The spread is 85 FPS, the smallest of the three resolutions, confirming the GPU's increased role. The Medium preset's minimum of 188 FPS is still smooth, while Ultra's 158 FPS average is acceptable for most users.

The complete dataset shows a consistent hierarchy across all resolutions: Low > Medium > High > Ultra. The only resolution with complete min/max data is Medium, which reveals that the frame time variance increases with resolution. At 1080p, the min-to-max spread is 176 FPS; at 1440p, it is 117 FPS; at 4K, it is 66 FPS. This suggests that the CPU's frame generation is more variable at lower resolutions, while the GPU's rendering pipeline at 4K produces more consistent output.