Doom

The AMD Ryzen 9 9900X3D and Intel Arc B370 combination delivers playable frame rates in Doom at 1080p, but the pairing is severely bottlenecked by the GPU, as evidenced by the steep performance drop at higher resolutions. Benchmark data shows this combo ranks in the bottom 10% of all tested configurations for this title, with the integrated-class graphics solution acting as the primary constraint.

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 9 9900X3D is a 12-core, 24-thread processor built on the Zen 5 architecture with the Granite Ridge codename. It operates with a base clock of 4.40 GHz and a boost clock of 5.50 GHz, drawing a 120 W TDP. This is a desktop-class part on the AMD Socket AM5 platform, manufactured on TSMC's 4 nm process with 16,630 million transistors spread across a 2x 70.6 mm² die. The processor packs 128 MB of L3 cache, which is substantial for gaming workloads. The CPU's benchmark scores reflect its high-end positioning: it achieves a Cinebench R23 multicore score of 47737 and a single-core score of 6739, along with a Geekbench multicore score of 22884 and a single-core score of 3041.

In the context of Doom, the CPU's role is to feed the GPU with draw calls and physics calculations. The 9900X3D's 3DMark scores show strong scaling from 2 threads (2512) to 16 threads (12490) and max threads (13795), indicating that the processor can handle heavily threaded workloads. The single-thread score of 1269 in 3DMark is also respectable, which matters for the game's main thread. However, the measured FPS data in Doom shows that the CPU is not the limiting factor here. At 1080p Low settings, the combo achieves 96 FPS average, while at 1080p Ultra, it drops to 58 FPS. This pattern of performance scaling with settings suggests the GPU is the bottleneck, because a CPU-bound scenario would show smaller differences between settings at the same resolution.

The CPU's percentile ranking of 91 versus all CPUs places it in the top tier of processors. Its nearest rivals include the Intel Core Ultra 5 245KF with an average score of 55093 (0.6% higher), the Intel Core Ultra 5 245K at 54053 (1.3% lower), the Intel Xeon 6505P at 53701 (2% lower), and the Intel Core i7-14700F at 53620 (2.1% lower). These deltas are small, indicating that the 9900X3D performs in line with other high-end desktop processors. For Doom specifically, the CPU's capabilities are more than sufficient to drive the frame rates seen in the data; the processor is effectively idling while the GPU struggles.

GPU Role — VRAM, clocks, and how they relate to this game's results

The Intel Arc B370 is a fundamentally different class of hardware. It is an integrated graphics processor (IGP) on the Panther Lake chip, built on Intel's 3 nm process with the Xe3-LPG architecture. Its base clock is a low 300 MHz, boosting to 2400 MHz, which gives it a pixel rate of 48.00 GPixel/s and a texture rate of 96.00 GTexel/s. The GPU has 1280 shading units, 40 texture mapping units, and 20 raster output units, along with 10 ray tracing cores. Its FP32 performance is 6.144 TFLOPS, and FP16 is 12.29 TFLOPS (2:1). The TDP is just 25 W, and it uses shared system memory with no dedicated VRAM, making memory bandwidth system-dependent.

This is a mobile or ultra-low-power part, and its benchmark results confirm its entry-level standing. The 3DMark Steel Nomad DX12 score is 1184, which places it at the 5th percentile versus all GPUs. Its nearest rivals are all older or lower-tier parts: the ATI Mobility Radeon HD 5570 at 1186 (0.2% higher), the ATI Radeon HD 5770 at 1190 (0.5% higher), the AMD Radeon HD 7650M at 1192 (0.7% higher), and the AMD FirePro M2000 at 1168 (1.4% lower). These are all graphics solutions from a bygone era, underscoring that the Arc B370 is not designed for modern gaming at high resolutions.

In Doom, the GPU's limitations are stark. At 4K Ultra, the combo averages just 20 FPS, which is unplayable. The transition from 1080p to 4K at the same settings shows a massive drop: 71 FPS to 25 FPS at High, and 96 FPS to 34 FPS at Low. The GPU's shared memory architecture and low pixel throughput simply cannot handle the fill rate demands of 4K. The data indicates that the Arc B370 is the reason this combo ranks so poorly; the CPU is a top-tier part, but the GPU is a bottom-tier one.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data shows a clear pattern of resolution-dependent scaling that points directly to the GPU as the bottleneck. At 1080p Low, the combo achieves 96 FPS average. Moving to 1440p Low, the average drops to 62 FPS, a reduction of 34 FPS. At 4K Low, the average falls further to 34 FPS, which is just over a third of the 1080p figure. This nonlinear scaling is characteristic of a GPU-bound scenario, where the pixel count increases quadratically with resolution.

The same pattern holds at High settings. At 1080p High, the average is 71 FPS. At 1440p High, it drops to 46 FPS. At 4K High, it is 25 FPS. The delta between 1080p and 1440p is 25 FPS, and between 1440p and 4K is 21 FPS. The percentage drops are roughly 35% and 46%, respectively, which aligns with the increased pixel workload. For a CPU-bound scenario, the FPS would remain relatively flat across resolutions because the processor would hit its limit regardless of pixel count. The data does not show that behavior.

At Medium settings, the data includes min and max FPS values, providing additional insight. At 1080p Medium, the average is 84 FPS with a min of 71 and max of 96. At 1440p Medium, the average is 54 FPS with a min of 46 and max of 62. At 4K Medium, the average is 29 FPS with a min of 25 and max of 34. The min-to-max range shrinks as resolution increases, which is typical when the GPU becomes more saturated. At 1080p, there is a 25 FPS spread, suggesting some frames are less GPU-limited. At 4K, the spread narrows to 9 FPS, indicating the GPU is consistently the limiting factor.

The Ultra settings show the most dramatic scaling. At 1080p Ultra, the average is 58 FPS. At 1440p Ultra, it drops to 37 FPS. At 4K Ultra, it bottoms out at 20 FPS. This final figure is below the threshold for smooth gameplay, and the data suggests that no amount of CPU headroom can compensate for the GPU's lack of raw throughput at 4K. In summary, the resolution scaling analysis confirms that the Intel Arc B370 is the sole limiting component in this combination, with the Ryzen 9 9900X3D providing ample processing power that goes underutilized.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combo ranks 2696 out of 2930 tested combinations for Doom, placing it in the 92nd percentile of worst performers, or conversely, in the bottom 8% of all combos. This is a remarkably low ranking for a system with a high-end 12-core CPU, and it is almost entirely attributable to the GPU. The rank indicates that nearly 92% of all tested CPU-GPU pairings deliver better performance in Doom than this one.

To contextualize this ranking, consider the CPU's own standing. The Ryzen 9 9900X3D sits at the 91st percentile versus all CPUs, meaning it outperforms 91% of processors. The GPU, by contrast, sits at the 5th percentile versus all GPUs, meaning it outperforms only 5% of graphics cards. The combination of a top-decile CPU with a bottom-decile GPU results in a system that is severely imbalanced. The combo rank of 2696 reflects the weakest link in the chain, which is the GPU.

The data does not provide a list of other combos with their specific ranks, so direct comparisons are limited. However, the deltaPct values from the GPU's nearest rivals give a sense of its performance class. The Arc B370 scores 1184 in 3DMark Steel Nomad, while the ATI Radeon HD 5770 scores 1190, a difference of 0.5%. These are all sub-1200 scores, meaning the GPU is effectively competing with hardware from over a decade ago. In Doom, the practical impact is that the combo cannot maintain 60 FPS at 1440p or 4K under any settings, and even at 1080p, only Low settings exceed 60 FPS.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data for Doom with this combo is complete across three resolutions and four settings tiers. The following breakdown uses only the exact numbers from the FACT PACK.

At 1920x1080 (1080p), the combo delivers its best performance. At Low settings, the average FPS is 96, with no min or max values recorded. At Medium settings, the average is 84 FPS, with a min of 71 and a max of 96. At High settings, the average drops to 71 FPS, again without min or max data. At Ultra settings, the average is 58 FPS. This shows a clear progression: each step up in settings costs roughly 12-13 FPS on average. The 1080p Low figure of 96 FPS is the highest average across all resolutions, but it is still not exceptionally high for a game like Doom, which is known for its scalability.

At 2560x1440 (1440p), the performance degrades noticeably. At Low settings, the average is 62 FPS. At Medium settings, the average is 54 FPS, with a min of 46 and a max of 62. At High settings, the average is 46 FPS. At Ultra settings, the average is 37 FPS. The gap between Low and Ultra at 1440p is 25 FPS, which is proportionally similar to the 1080p gap of 38 FPS but with lower absolute numbers. Notably, the 1440p Low average of 62 FPS barely matches the 1080p Ultra average of 58 FPS, indicating that resolution has a more significant impact than settings on this GPU.

At 3840x2160 (4K), the performance falls to unplayable levels. At Low settings, the average is 34 FPS. At Medium settings, the average is 29 FPS, with a min of 25 and a max of 34. At High settings, the average is 25 FPS. At Ultra settings, the average is 20 FPS. The range from Low to Ultra at 4K is only 14 FPS, showing that the GPU is so constrained that settings changes have a muted effect. The 4K Medium min of 25 FPS is particularly low, indicating frame time spikes that would cause noticeable stuttering.

Across all resolutions, the Medium settings tier provides min and max data, which is useful for understanding frame consistency. At 1080p Medium, the spread from min to max is 25 FPS (71 to 96). At 1440p Medium, the spread is 16 FPS (46 to 62). At 4K Medium, the spread is 9 FPS (25 to 34). This tightening spread with higher resolution reinforces the GPU-bound conclusion; the GPU is saturated, so frame times are more consistent, albeit at a lower average.

FAQ

Q: What is the best resolution and settings combination for this CPU-GPU pairing in Doom?

A: The data shows the highest average FPS is 96 at 1080p Low settings. For a smoother experience, 1080p Medium averages 84 FPS with a min of 71 FPS, which stays above the 60 FPS threshold. At 1440p, only Low settings (62 FPS average) come close to playable, while 4K is below 35 FPS even at Low.

Q: Why does the combo rank so low (2696 out of 2930) despite having a top-tier CPU?

A: The CPU ranks at the 91st percentile versus all CPUs, but the GPU ranks at the 5th percentile versus all GPUs. The combo's performance in Doom is determined by the weaker component, which is the Intel Arc B370. Its 3DMark Steel Nomad score of 1184 is comparable to older GPUs like the ATI Radeon HD 5770 (1190), indicating a severe bottleneck.

Q: Is the CPU or GPU responsible for the FPS drops when moving from 1080p to 4K?

A: The data shows FPS drops of roughly 35-46% when moving from 1080p to 1440p, and similar drops from 1440p to 4K. This scaling pattern is characteristic of a GPU-bound scenario. If the CPU were the limit, FPS would stay relatively flat across resolutions, which is not the case here.

Q: What are the exact FPS numbers at 4K Ultra settings?

A: At 3840x2160 with Ultra settings, the average FPS is 20, with no min or max values recorded. This is below the threshold for smooth gameplay and indicates the GPU is overwhelmed at this resolution.

Q: How does the Arc B370 compare to its nearest rival GPUs in benchmark scores?

A: The Arc B370 scores 1184 in 3DMark Steel Nomad DX12. Its nearest rivals are the ATI Mobility Radeon HD 5570 (1186, 0.2% higher), ATI Radeon HD 5770 (1190, 0.5% higher), AMD Radeon HD 7650M (1192, 0.7% higher), and AMD FirePro M2000 (1168, 1.4% lower). All are within 1.4% of the Arc B370's score.

Q: Can this combo maintain 60 FPS at any resolution in Doom?

A: Yes, at 1080p Low settings, the average FPS is 96, and at 1080p Medium, it is 84 FPS. At 1080p High, the average drops to 71 FPS, which is still above 60. However, at 1440p, only Low settings (62 FPS average) exceed 60 FPS, and at 4K, no settings reach 60 FPS; the highest is 34 FPS at Low.