Doom

The AMD Ryzen 7 9850X3D and Intel Arc B390 pairing presents a unique case study in system bottlenecking. The Arc B390, an integrated GPU based on the Xe3-LPG architecture, is clearly the performance ceiling in this configuration, as the data shows a dramatic decline in frame rates as resolution increases. This analysis breaks down the measured performance of this combo in Doom, focusing on how the GPU and CPU each contribute to the final experience.

Resolution Scaling

The measured frame rates reveal a steep and consistent performance drop as resolution scales from 1080p to 4K, definitively identifying the Intel Arc B390 as the limiting component. At 1080p with High settings, the combo achieves an average of 78 FPS. Moving to 1440p drops that average to 51 FPS, a significant 34.6% reduction. The step to 2160p is even more punishing, with the average falling to just 28 FPS, which is 45.1% lower than the 1440p result and a 64.1% decline from the 1080p baseline.

This scaling pattern is a classic indicator of a GPU-bound scenario. The Ryzen 7 9850X3D, with its 8 cores and 16 threads, has ample processing headroom to feed frames, but the Arc B390's rendering capabilities—evidenced by its 7.680 TFLOPS FP32 throughput—are simply overwhelmed by the increasing pixel count. The data for the Medium preset further illustrates this point. At 1080p Medium, the average is 93 FPS, which drops to 60 FPS at 1440p and then to 33 FPS at 2160p. In each case, the performance halving between 1080p and 4K is a clear sign that the integrated GPU's pixel fill rate and shading power are the primary constraints, not the CPU's ability to process the game's logic.

The relationship between Low and Ultra settings at 4K is also telling. At 2160p Low, the average FPS is 37, while at Ultra it collapses to 22 FPS. This 15 FPS spread shows that even at the highest resolution, the game's graphical settings have a measurable impact. However, the fact that even the lowest settings at 4K fail to break the 40 FPS mark underscores the GPU's fundamental performance ceiling. The benchmark results indicate that this combo is not suited for high-resolution gaming, as the frame rate drops to levels that would be considered unplayable for a fast-paced FPS like Doom at 4K, regardless of the preset chosen.

Settings Recommendations

Given the measured data, the optimal settings for this combo depend heavily on the target resolution and the user's preference for visual fidelity versus frame rate. At 1080p, the Medium preset offers the best balance, delivering an average of 93 FPS. This is 15 FPS higher than High (78 FPS) and 29 FPS higher than Ultra (64 FPS), while providing a substantial visual upgrade over Low (107 FPS). The jump from Low to Medium costs only 14 FPS but yields a significant improvement in graphical quality. For a smooth 60+ FPS experience at 1080p, Medium is the clear recommendation, as it stays well above the 60 FPS threshold while offering a richer visual presentation than Low.

At 1440p, the situation becomes more constrained. The Medium preset again provides the best experience, with an average of 60 FPS. This is the only preset at this resolution that achieves a playable 60 FPS average. High settings drop to 51 FPS, and Ultra falls to 41 FPS. While 60 FPS is the target, the minimum FPS recorded for Medium at 1440p is 51, which suggests there may be occasional dips that could be noticeable in intense combat scenes. Still, the data shows that Medium is the only viable option for a consistently smooth experience at this resolution.

For 4K gaming, the data offers no truly fluid options. The highest average FPS is 37, achieved with Low settings. This is followed by 33 FPS on Medium, 28 FPS on High, and 22 FPS on Ultra. None of these averages are close to the 60 FPS target for a responsive FPS. The recommendation for 4K is to use Low settings if the user insists on this resolution, but the benchmark results indicate that the system is not capable of providing a satisfactory experience here. The performance is simply too low across all presets, suggesting that users should strongly consider 1440p or 1080p as their primary gaming resolutions with this hardware combination.

GPU Role

The Intel Arc B390 is the definitive performance bottleneck in this system, and the benchmark data highlights its limitations. Its integrated nature is confirmed by its specifications: it features 1536 shading units, 48 texture mapping units, and 24 render output units. The architecture, Xe3-LPG, is designed for mobile and integrated use, which explains its modest performance profile. The GPU's boost clock is listed at 2500 MHz, and its FP32 performance is rated at 7.680 TFLOPS. While these numbers are respectable for an integrated solution, they are insufficient for demanding AAA titles at high resolutions.

The GPU's memory configuration is "System Shared," meaning it relies on the system's DDR5 memory for both capacity and bandwidth. This is a critical limitation, as the memory bandwidth is "System Dependent" and cannot match the dedicated high-speed VRAM found on discrete graphics cards. This shared memory architecture likely contributes to the steep performance penalties observed when increasing resolution, as the GPU must compete with the CPU for memory access. The only 3DMark Steel Nomad DX12 benchmark score for this GPU is 1482, placing it in the 9th percentile of all GPUs, which underscores its entry-level positioning.

Comparisons with its nearest rivals in the database paint a clear picture of its capabilities. The Arc B390's average benchmark score is 1482, which is 1.3% higher than the NVIDIA GeForce GT 520MX (1463), 1.5% higher than the NVIDIA GeForce 800M (1460), 2.5% higher than the NVIDIA GeForce GT 625 OEM (1446), and 2.7% higher than the NVIDIA GeForce GT 710 (1443). These delta percentages are incredibly small, indicating that the Arc B390 performs in the same performance tier as these legacy, low-end discrete GPUs. This context reinforces the notion that while the integrated GPU is functional, its performance class is far below what is needed to drive a modern FPS at high settings and resolutions. Its 60.00 GPixel/s pixel rate and 120.0 GTexel/s texture rate are simply not enough to keep up with the demands of 1440p and 4K rendering.

FAQ

*Q: What is the average frame rate for this combo in Doom at 1080p with High settings?*

A: The measured average FPS is 78 at 1920x1080 with High settings.

Q: How much of a performance drop is seen when moving from 1080p to 4K on the Medium preset?

A: The average FPS drops from 93 at 1080p to 33 at 2160p, a reduction of 60 FPS, or 64.5%.

Q: Is the Intel Arc B390 a discrete graphics card?

A: No, it is an integrated graphics processor (IGP) with a slot width of "IGP" and uses "System Shared" memory, indicating it is part of the processor package.

Q: What is the best preset to use for a 60 FPS experience at 1440p?

A: The Medium preset is the only option that achieves a 60 FPS average at 2560x1440, with an average FPS of 60.

Q: How does the Arc B390's benchmark score compare to the NVIDIA GeForce GT 710?

A: The Arc B390's average 3DMark Steel Nomad DX12 score is 1482, which is 2.7% higher than the NVIDIA GeForce GT 710's score of 1443.

*Q: What is the combo's ranking among all tested system configurations for Doom?*

A: The combo ranks 2580 out of 2930 tested combinations, placing it in the bottom 12% of all systems.

How This Combo Ranks

In the database of tested combinations for Doom, this pairing of the AMD Ryzen 7 9850X3D and Intel Arc B390 ranks 2580 out of 2930. This places the system in the bottom 11.9% of all configurations, a clear indicator that its overall gaming performance is far below average. The ranking is a direct consequence of the GPU's severe limitations, which cap the system's potential despite the CPU's high-end capabilities.

The rank is heavily skewed by the GPU, which sits in the 9th percentile of all GPUs. The Arc B390's closest rivals, such as the NVIDIA GeForce GT 520MX and GeForce 800M, are all legacy parts from a different era, confirming its low standing in the performance hierarchy. In contrast, the CPU is a top-tier part, ranking in the 92nd percentile of all CPUs. This massive disparity in component performance classes creates a system where the GPU is an insurmountable bottleneck, dragging the entire combo's ranking down to match its own low position. The 2580th rank is therefore a reflection of the GPU's performance, not the CPU's. The data shows that this combo is essentially an integrated graphics solution with a high-end processor, and its ranking accurately reflects the gaming experience it provides.

CPU Role

The AMD Ryzen 7 9850X3D is an exceptionally powerful processor, but its role in this system's Doom performance is to feed frames to a GPU that cannot keep up. The CPU is an 8-core, 16-thread part based on the Zen 5 architecture, with a base clock of 4.70 GHz and a boost clock of 5.60 GHz. It features a substantial 96 MB of shared L3 cache, which is designed to improve gaming performance by reducing memory latency. In synthetic benchmarks, it scores 22807 in Cinebench R23 multi-core and 2228 in single-core, and it achieves a 4704 in Passmark's single-thread test. These scores indicate a processor with immense raw power.

In the context of Doom, the CPU's role is to handle game logic, physics, and draw calls. Given the high single-thread and multi-thread scores, the Ryzen 7 9850X3D is more than capable of handling these tasks at very high frame rates. The measured FPS data confirms this: the frame rates are not being limited by the CPU, as they drop consistently and predictably with resolution increases, a classic sign of a GPU bottleneck. If the CPU were the limiting factor, we would expect to see similar frame rates across different resolutions, as the CPU's workload would be the same.

The CPU's high performance is effectively wasted in this configuration. With a Passmark multi-thread score of 41318 and an average benchmark score of 58386, the CPU is operating far below its potential. The nearest rivals to the CPU, such as the Intel Core i9-14900 (with a delta of 0.5%) and the Intel Xeon w5-2545 (with a delta of -0.2%), are high-end processors in their own right, confirming the 9850X3D's standing. The bottleneck is so pronounced that the CPU's performance is irrelevant to the final FPS. The benchmark results indicate that users with this CPU should pair it with a much more powerful discrete GPU to unlock its full potential; in this combo, the CPU is idle, waiting for the integrated GPU to catch up.