Doom

The AMD Ryzen 9 9950X3D paired with the Intel Arc B390 presents a starkly lopsided configuration in Doom. The data shows a top-tier CPU constrained by an entry-level integrated GPU, resulting in a frame rate profile that is almost entirely dependent on graphics settings. The measured rows indicate that even the most demanding preset yields playable results at 1080p, but the experience degrades rapidly as resolution increases.

Settings Recommendations

The benchmark data suggests that the Low preset offers the most balanced experience across all tested resolutions. At 1920x1080, the Low preset achieves an average of 107 FPS, which is the highest frame rate recorded for this combination. This represents a 37% improvement over the High preset’s 78 FPS at the same resolution. The advantage persists at higher resolutions, where Low delivers 69 FPS at 2560x1440 and 37 FPS at 3840x2160, outperforming the High preset by 35% and 32%, respectively.

For users prioritizing visual fidelity, the Medium preset provides a reasonable middle ground. At 1080p, Medium produces 93 FPS, which is 16% faster than High and 45% faster than Ultra. The Medium preset also has a documented frame time range at 1080p (79 FPS minimum, 107 FPS maximum), indicating some variance but generally stable performance. At 1440p, Medium maintains a playable 60 FPS average, with a minimum of 51 FPS and maximum of 69 FPS.

The Ultra preset is difficult to recommend for this configuration. At 1080p, it achieves 64 FPS, which is playable but significantly lower than other presets. At 1440p, it drops to 41 FPS, and at 4K, it falls to 22 FPS, which is below the threshold for a smooth experience. The High preset sits between Medium and Ultra in performance, offering 78 FPS at 1080p and 51 FPS at 1440p, but its 28 FPS at 4K is marginal. Based on the measured data, Low is the most consistent performer, while Medium is the optimal choice when image quality matters more than maximum frame rate.

GPU Role

The Intel Arc B390 is the primary bottleneck in this configuration. It is an integrated graphics solution based on the Xe3-LPG architecture, built on a 3 nm process from Intel. The GPU operates with a base clock of 300 MHz and a boost clock of 2500 MHz. Its memory is designated as "System Shared," meaning it relies on the host system's DDR5 memory rather than dedicated VRAM, with bandwidth that is "System Dependent." The GPU has 1536 shading units, 48 texture mapping units, and 24 raster output units.

The benchmark results clearly reflect the GPU's limitations. In the 3DMark Steel Nomad DX12 test, the Arc B390 scores 1482 points, placing it in the 9th percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce GT 520MX, which scores 1463 (1.3% slower), and the NVIDIA GeForce GT 710, which scores 1443 (2.7% slower). This places the Arc B390 in a performance tier that is fundamentally unsuited for high-resolution gaming.

The GPU's impact on Doom is evident in the frame rate scaling. At 1080p with Low settings, the system achieves 107 FPS, suggesting the CPU is doing most of the work to feed frames. However, as resolution increases, the GPU's fill rate and compute capabilities become the limiting factor. The pixel rate of 60.00 GPixel/s and texture rate of 120.0 GTexel/s are modest figures, explaining why the 4K Ultra preset (22 FPS) is nearly unplayable. The FP32 performance of 7.680 TFLOPS is sufficient for basic rendering but cannot sustain high frame rates at demanding settings.

CPU Role

The AMD Ryzen 9 9950X3D is an exceptionally powerful processor that is vastly underutilized in this pairing. It features 16 cores and 32 threads based on the Zen 5 architecture (Granite Ridge), with a base clock of 4.30 GHz and a boost clock of 5.70 GHz. The CPU has a large L3 cache of 128 MB, which is beneficial for gaming workloads. Its memory support includes dual-channel DDR5 with a bandwidth of 89.6 GB/s.

The CPU's benchmark scores confirm its high-end positioning. In Cinebench R23, it scores 42018 in multi-core and 2259 in single-core. Geekbench results show 26736 in multi-core and 3064 in single-core. Its average benchmark score is 75779, placing it in the 95th percentile of all CPUs. Its nearest rivals include the AMD Ryzen 7 PRO 9755 (75738, 0.1% slower) and the Intel Core Ultra 9 285 (75488, 0.4% slower), indicating the 9950X3D is at the top of the performance hierarchy.

In Doom, the CPU's role is to handle game logic, physics, and draw calls. With 16 cores and 32 threads, the 9950X3D has ample headroom for these tasks. The single-thread performance (1292 in 3DMark single-thread, 2259 in Cinebench R23 single-core) is strong, which matters for older games like Doom that may not scale well across many cores. However, the measured frame rates show that the CPU is not the limiting factor; the GPU is. The data indicates that at 1080p Low, the system reaches 107 FPS, but this is likely near the GPU's ceiling for that preset rather than a CPU limitation.

How This Combo Ranks

The combination of the AMD Ryzen 9 9950X3D and Intel Arc B390 ranks 2580 out of 2930 tested combos in Doom. This places it in the bottom 12% of all configurations, which is a poor result given the CPU's capabilities. The ranking reflects the severe imbalance between the components: a top-5 percentile CPU paired with a bottom-10 percentile GPU.

The combo's ranking is driven entirely by the GPU's performance. The Arc B390's 3DMark Steel Nomad score of 1482 is comparable to a decade-old discrete GPU, and its nearest rivals are all entry-level or legacy parts. In contrast, the 9950X3D's nearest rivals are other high-end workstation and desktop processors, with deltas of only 0.1% to 0.4%. This means the CPU is performing as expected, but the overall system is constrained by the integrated graphics.

The practical implication is that this combo is not suitable for Doom at high settings or resolutions. The measured FPS at 4K Ultra (22 FPS) is below playable thresholds, and even 1080p Ultra (64 FPS) is marginal. For users who own this CPU and are considering the Arc B390 as a temporary solution, the data suggests that only Low or Medium settings at 1080p or 1440p are viable. The combo's low ranking is a direct consequence of the GPU, not the CPU.

FAQ

Q: What is the best preset for this combo at 1920x1080?

A: The Low preset achieves the highest average FPS at 107, followed by Medium at 93, High at 78, and Ultra at 64. Low provides the smoothest experience, while Medium offers a balance of visual quality and performance.

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

A: The Arc B390 scores 1482 in 3DMark Steel Nomad, which is 1.3% higher than the NVIDIA GeForce GT 520MX (1463), 1.5% higher than the NVIDIA GeForce 800M (1460), and 2.7% higher than the NVIDIA GeForce GT 625 OEM (1446). This indicates a performance tier near entry-level discrete GPUs.

Q: Is the Ryzen 9 9950X3D a bottleneck in Doom?

A: The data does not indicate a CPU bottleneck. The 9950X3D's Cinebench R23 multi-core score of 42018 and single-core score of 2259 are far above what Doom requires. The frame rates are limited by the GPU, as shown by the significant FPS drops when resolution increases.

Q: What is the combo's ranking among all tested configurations?

A: The combo ranks 2580 out of 2930 tested combos in Doom, placing it in the bottom 12% of all systems. This ranking is primarily due to the GPU's limited performance.

Q: Can this system maintain 60 FPS at 2560x1440?

A: Yes, but only on the Medium preset, which averages 60 FPS with a minimum of 51 FPS and maximum of 69 FPS. The Low preset averages 69 FPS, while High averages 51 FPS and Ultra averages 41 FPS.

Q: How does the CPU's performance compare to its nearest rivals?

A: The 9950X3D has an average benchmark score of 75779, which is 0.1% higher than the AMD Ryzen 7 PRO 9755 (75738), 0.1% higher than the AMD Ryzen 7 PRO 9755X3D (75716), and 0.4% higher than the Intel Core Ultra 9 285 (75488). This shows the CPU is at the top of its class.

Measured FPS Breakdown

At 1920x1080, the measured average FPS across presets is as follows: Low achieves 107 FPS, Medium achieves 93 FPS (with a minimum of 79 and maximum of 107), High achieves 78 FPS, and Ultra achieves 64 FPS. The spread between Low and Ultra is 43 FPS, indicating a significant performance cost for higher visual settings.

At 2560x1440, the average FPS drops notably: Low achieves 69 FPS, Medium achieves 60 FPS (minimum 51, maximum 69), High achieves 51 FPS, and Ultra achieves 41 FPS. The difference between Low and Ultra is 28 FPS, showing that the GPU struggles more as resolution increases.

At 3840x2160, the average FPS is quite low: Low achieves 37 FPS, Medium achieves 33 FPS (minimum 28, maximum 37), High achieves 28 FPS, and Ultra achieves 22 FPS. None of these presets deliver a consistently smooth experience at 4K, with the best case (Low) still below 40 FPS.

The data shows a consistent pattern: for each resolution, the Low preset provides the highest FPS, followed by Medium, High, and Ultra. The minimum FPS values for Medium at each resolution (79 at 1080p, 51 at 1440p, 28 at 4K) suggest that frame pacing is stable but not immune to drops.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals the GPU-bound nature of this configuration. At Low settings, the average FPS drops from 107 at 1080p to 69 at 1440p (a 36% decrease) and then to 37 at 4K (a 65% decrease from 1080p). At Medium settings, the FPS drops from 93 at 1080p to 60 at 1440p (35% decrease) and then to 33 at 4K (65% decrease). At High settings, the FPS drops from 78 at 1080p to 51 at 1440p (35% decrease) and then to 28 at 4K (64% decrease). At Ultra settings, the FPS drops from 64 at 1080p to 41 at 1440p (36% decrease) and then to 22 at 4K (66% decrease).

The consistency of these percentage drops across presets is telling. Regardless of whether the system is running Low or Ultra, the frame rate scales by roughly one-third when moving from 1080p to 1440p, and another one-third when moving from 1440p to 4K. This uniform scaling indicates that the GPU is the limiting component at all settings. If the CPU were the bottleneck, the scaling would be less pronounced at lower resolutions where the CPU has more work per frame relative to the GPU.

The pixel throughput required at 4K is four times that of 1080p, and the Arc B390's modest pixel rate of 60.00 GPixel/s cannot keep up. The data confirms that this combo is best suited for 1080p gaming, where the CPU's high single-thread performance can partially compensate for the GPU's weaknesses. At 1440p, the system is borderline playable only on Low or Medium, and at 4K, it is not viable for competitive or smooth gameplay.