Roblox

The AMD Ryzen 7 3700X paired with the Intel Arc B390 delivers a playable but not exceptional Roblox experience, with the data showing the system lands in the 2661st position out of 3010 tested combos. The most significant finding is that this pairing produces a steep performance cliff as resolution increases, with a 1080p average of 137 FPS on High settings collapsing to just 52 FPS at 4K. This pattern strongly suggests the Intel Arc B390, an integrated graphics solution with a 9th percentile ranking among all GPUs, is the primary bottleneck when pixel count rises.

Resolution Scaling

The measured FPS data reveals a clear and consistent scaling penalty as resolution increases across all four settings presets. At 1080p High settings, the combo averages 137 FPS, which drops to 92 FPS at 1440p (a 33% reduction) and then to 52 FPS at 4K (a 62% reduction from 1080p). This steep decline is characteristic of a GPU-limited scenario, where the render output units and shading units of the Arc B390 are overwhelmed by the increasing pixel workload.

The Low settings preset shows the same trend but with higher absolute numbers: 171 FPS at 1080p, 114 FPS at 1440p, and 64 FPS at 4K. The delta between 1080p and 4K on Low settings is 107 FPS, which is proportionally similar to the High preset's 85 FPS drop. This consistency across presets indicates the resolution scaling is governed by the GPU's fixed hardware capabilities rather than by software-level effects that vary with quality settings.

Medium settings provide the only complete dataset with min and max FPS values, revealing additional insight into frame time stability. At 1080p Medium, the average is 155 FPS with a minimum of 132 and maximum of 179, representing a 47 FPS spread. At 1440p Medium, the average drops to 104 FPS with a range of 88 to 119, a 31 FPS spread. At 4K Medium, the average falls to 59 FPS with a 50 to 67 range, an 17 FPS spread. The shrinking variance at higher resolutions indicates the GPU is operating closer to its sustained limit, reducing the headroom for frame rate fluctuations.

The Ultra preset delivers the lowest performance at every resolution, with 111 FPS at 1080p, 74 FPS at 1440p, and 42 FPS at 4K. The gap between High and Ultra settings is 26 FPS at 1080p, 18 FPS at 1440p, and 10 FPS at 4K. This narrowing delta suggests that at 4K, the GPU is so saturated that the additional visual workload from Ultra settings cannot be fully processed, making the difference between presets less impactful than at lower resolutions.

CPU Role

The AMD Ryzen 7 3700X provides substantial computational headroom that the benchmark results indicate is not the limiting factor in Roblox. This processor features 8 cores and 16 threads, with a base clock of 3.60 GHz and a boost clock of 4.40 GHz. Its 65W TDP and Zen 2 architecture on a 7 nm process from TSMC position it as a capable desktop part, evidenced by its 84th percentile ranking among all CPUs.

Synthetic benchmarks confirm the CPU's strength. The Cinebench R15 multicore score of 2092 and single-core score of 204 demonstrate solid multi-threaded and acceptable single-threaded performance. Geekbench results show 8899 multicore and 1593 single-core scores. PassMark tests further quantify the CPU's capabilities, with a multithread score of 22458 and a single-thread score of 2656. The CPU's average benchmark score of 34260 places it essentially on par with the AMD Ryzen AI 7 350 (delta of 0.1%) and AMD EPYC 4244P (delta of 0.1%), while being 0.2% behind the Intel Core i5-13450HX and 0.5% ahead of the Intel Core Ultra 7 165H.

In Roblox specifically, the CPU's 32 MB of L3 cache and dual-channel DDR4 memory support with 51.2 GB/s bandwidth should be sufficient for the game's workloads. The data shows that at 1080p Low settings, the system reaches 171 FPS, which indicates the CPU can feed the GPU at high frame rates. However, the fact that FPS scales down so dramatically with resolution — rather than remaining CPU-bound at a fixed ceiling — demonstrates that the Ryzen 7 3700X is never the primary constraint in this pairing. The CPU's 84th percentile ranking versus the GPU's 9th percentile ranking makes the performance hierarchy unambiguous.

How This Combo Ranks

The combination of the AMD Ryzen 7 3700X and Intel Arc B390 ranks 2661st out of 3010 tested combos in Roblox, placing it in the bottom 12% of all configurations. This low ranking is driven almost entirely by the GPU's weak performance, as the CPU alone is a mid-to-high tier part. The data indicates that this combo sits well below the median, and users seeking higher Roblox frame rates would need to address the graphics component first.

The GPU's individual percentile ranking of 9 among all GPUs provides context for the combo's overall position. The Arc B390's average benchmark score of 1482 in 3DMark Steel Nomad DX12 places it in close competition with very old discrete GPUs: it is 1.3% ahead of the NVIDIA GeForce GT 520MX, 1.5% ahead of the GeForce 800M, 2.5% ahead of the GeForce GT 625 OEM, and 2.7% ahead of the GeForce GT 710. These rivals are all entry-level parts from previous generations, underscoring how limited the Arc B390's raw graphics throughput is.

The rank disparity between the CPU and GPU in this combo is stark. The Ryzen 7 3700X's 84th percentile CPU ranking would normally support a much higher overall system tier, but the Arc B390's 9th percentile GPU ranking drags the combined result down. This mismatch means the combo's Roblox performance is representative of what a low-end GPU can achieve with a powerful CPU, rather than what the CPU itself can deliver.

Measured FPS Breakdown

At 1920x1080, the combo delivers its best results. Low settings average 171 FPS, Medium averages 155 FPS with a 132-179 range, High averages 137 FPS, and Ultra averages 111 FPS. All presets exceed 100 FPS at this resolution, which is suitable for most displays. The 60 FPS gap between Low and Ultra settings at 1080p demonstrates that the GPU retains enough headroom to handle increased visual fidelity while still maintaining high frame rates.

Moving to 2560x1440, performance drops noticeably. Low settings average 114 FPS, Medium averages 104 FPS with an 88-119 range, High averages 92 FPS, and Ultra averages 74 FPS. The 1440p results show that the combo can still maintain playable frame rates on High and below, but Ultra settings dip into a range where competitive play might be affected. The 40 FPS difference between Low and Ultra at 1440p is proportionally similar to the 1080p gap, indicating the GPU is scaling predictably.

At 3840x2160, the combo struggles to maintain high frame rates. Low settings average 64 FPS, Medium averages 59 FPS with a 50-67 range, High averages 52 FPS, and Ultra averages 42 FPS. Only Low settings exceed 60 FPS on average at 4K, and the Ultra preset falls below 45 FPS, which can result in noticeable stuttering in fast-paced Roblox experiences. The Medium preset's minimum of 50 FPS suggests occasional dips below the 60 FPS threshold even at moderate settings.

The data shows a consistent pattern across all presets: each resolution step from 1080p to 1440p to 4K reduces average FPS by roughly 30-40% at each stage. The 4K results are the weakest, with even Low settings producing only 64 FPS average, which is below what the 1080p Ultra settings achieve (111 FPS). This reinforces the conclusion that the GPU's fill rate and pixel throughput are the governing constraints at higher resolutions.

GPU Role

The Intel Arc B390 is an integrated graphics processor based on the Xe3-LPG architecture, built on Intel's 3 nm process as part of the Panther Lake chip. It operates with a base clock of 300 MHz and a boost clock of 2500 MHz, with a 80W TDP and no dedicated power connectors, confirming its IGP form factor. The GPU has 1536 shading units, 48 texture mapping units, and 24 render output units, along with 12 ray tracing cores.

The GPU's memory configuration is entirely system-shared, meaning it uses the host system's DRAM rather than dedicated VRAM. The memory bus width and bandwidth are listed as "System Shared" and "System Dependent" respectively, which means the Roblox performance is partly contingent on the system's memory configuration. The Ryzen 7 3700X supports dual-channel DDR4 with 51.2 GB/s bandwidth, which will be the effective memory ceiling for the GPU.

Raw compute figures from the GPU's specifications show a peak FP32 throughput of 7.680 TFLOPS and FP16 of 15.36 TFLOPS (2:1 ratio). Pixel rate is 60.00 GPixel/s and texture rate is 120.0 GTexel/s. These numbers are modest by modern standards and align with the 3DMark Steel Nomad DX12 score of 1482, which places the GPU in the 9th percentile. The nearest rivals in terms of average benchmark score are all NVIDIA parts from the GT 600 and 800 series, confirming the Arc B390's performance class is comparable to decade-old entry-level discrete GPUs.

In Roblox, the GPU's limitations manifest most clearly at higher resolutions. The 4K Ultra result of 42 FPS is likely constrained by the ROP count of 24, which limits pixel fill rate. The 1080p Low result of 171 FPS shows the GPU can work efficiently when the pixel workload is modest, but the steep decline at 4K is the direct consequence of the low ROP count and system-shared memory bandwidth. The GPU's DirectX 12 Ultimate support and Vulkan 1.4 compatibility are relevant for modern game features, but Roblox's relatively simple graphics pipeline does not appear to benefit from these advanced APIs, as evidenced by the consistent scaling pattern across presets.

FAQ

Q: What is the best resolution and settings combo for Roblox with this hardware?

A: The data shows that 1080p Low settings deliver the highest average FPS at 171, while 1080p High still achieves 137 FPS. For a balance of visual quality and performance, 1080p Medium at 155 FPS is the best option. At 1440p, High settings at 92 FPS are acceptable, but 4K should be avoided unless using Low settings, which only average 64 FPS.

Q: Is the AMD Ryzen 7 3700X holding back the Intel Arc B390 in Roblox?

A: No, the benchmark results indicate the CPU is not the limiting factor. The Ryzen 7 3700X ranks in the 84th percentile among all CPUs with an average benchmark score of 34260, while the Arc B390 ranks in the 9th percentile among GPUs. The fact that FPS drops dramatically from 171 at 1080p Low to 64 at 4K Low shows the GPU is the bottleneck, as a CPU-bound scenario would show consistent frame rates regardless of resolution.

Q: How does the Intel Arc B390 compare to its nearest GPU rivals?

A: The Arc B390's 3DMark Steel Nomad DX12 score of 1482 places it 1.3% ahead of the NVIDIA GeForce GT 520MX, 1.5% ahead of the GeForce 800M, 2.5% ahead of the GeForce GT 625 OEM, and 2.7% ahead of the GeForce GT 710. These are all low-end GPUs, and the small percentage differences mean performance is effectively comparable across these parts.

Q: What frame rates can be expected at 1440p with Medium settings?

A: At 2560x1440 with Medium settings, the combo averages 104 FPS, with a minimum of 88 FPS and a maximum of 119 FPS. This is the only resolution and settings combination that provides full min/max data, showing a 31 FPS variance that indicates moderate frame time stability.

Q: Does the combo rank well among all tested configurations for Roblox?

A: No, the combo ranks 2661st out of 3010 tested combos, placing it in the bottom 12% of configurations. This low ranking is primarily attributable to the GPU's weak performance, as the CPU alone would normally support a much higher tier of overall system performance.

Q: Is the Intel Arc B390's memory configuration a concern for Roblox performance?

A: The GPU uses system-shared memory with system-dependent bandwidth, meaning it relies on the Ryzen 7 3700X's dual-channel DDR4 support. The CPU provides 51.2 GB/s of memory bandwidth, which is sufficient for the GPU's needs at lower resolutions but may contribute to the steep performance drop at 4K, where higher memory bandwidth demands cannot be met.