Doom

The Intel Core Ultra 7 270K Plus paired with the Intel Arc B390 produces a gaming experience in Doom that is severely constrained by the graphics processor. Across all tested resolutions and settings, frame rates remain modest, with the combination ranking in the 2580th position out of 2930 tested combos. The data indicates a system where the CPU’s substantial processing power is largely left untapped, while the integrated GPU struggles to maintain playable performance at higher graphical loads.

Resolution Scaling

The measured frame rates reveal a steep and predictable decline as resolution increases, confirming that the Intel Arc B390 is the primary bottleneck. At 1920x1080 with Low settings, the combo achieves 107 FPS. Moving to 2560x1440 drops that figure to 69 FPS, a reduction of 38 FPS, and at 3840x2160 the average falls further to 37 FPS. This scaling pattern is characteristic of a GPU-limited scenario: the workload per pixel increases dramatically with resolution, and the Arc B390’s limited compute resources are unable to keep pace.

The drop from 1080p to 1440p at Low settings represents a 35.5% performance loss, while the subsequent jump to 4K costs another 46.4% of the 1440p score. This progressive degradation is not linear, suggesting that the GPU’s memory bandwidth and shading capacity are being exhausted. At 4K, even the most forgiving preset only manages 37 FPS, which is below the threshold for smooth gameplay in a fast-paced FPS. The scaling behavior indicates that users targeting 4K will need to accept significant compromises, and even then, the results are marginal.

When examining the Medium preset, the same pattern holds. The 1080p average of 93 FPS drops to 60 FPS at 1440p and then to 33 FPS at 4K. The minimum frame rates recorded for Medium settings (79 FPS at 1080p, 51 FPS at 1440p, and 28 FPS at 4K) show that the system does not just lose average performance; it also experiences more pronounced dips, which can be detrimental to gameplay consistency. The frame time variance at higher resolutions suggests the GPU is frequently stalling, likely due to memory pressure or shader workload limits.

The Ultra preset tells a similar story with even lower absolute numbers. From 64 FPS at 1080p, the average drops to 41 FPS at 1440p and 22 FPS at 4K. This last figure is effectively unplayable for a game requiring quick reactions. The resolution scaling analysis points to a clear conclusion: the Arc B390 is the limiting component across the board. The CPU’s performance headroom is irrelevant here because the GPU cannot feed frames fast enough to utilize it.

GPU Role

The Intel Arc B390 is an integrated graphics solution based on the Xe3-LPG architecture, built on a 3 nm process. It operates with a base clock of 300 MHz and a boost clock of 2500 MHz, which are relatively wide ranges. The benchmark results indicate that this GPU sits in the 9th percentile of all GPUs, with its 3DMark Steel Nomad DX12 score of 1482 placing it near the NVIDIA GeForce GT 520MX (1463) and NVIDIA GeForce 800M (1460). This context is crucial: the Arc B390 is competing with entry-level discrete GPUs from over a decade ago, not modern gaming hardware.

The GPU has 1536 shading units, 48 texture mapping units, and 24 raster output units. It also includes 12 ray tracing cores, though Doom (2016) does not utilize ray tracing, so this hardware remains idle. The pixel rate is 60.00 GPixel/s, and the texture rate is 120.0 GTexel/s. These figures, while modest, are consistent with the measured frame rates. For instance, at 1080p, the GPU can render 107 FPS on Low settings, which translates to roughly 2.07 million pixels per frame, a workload within its theoretical capabilities. However, at 4K, the pixel count quadruples to 8.29 million pixels per frame, and the GPU’s output drops to 37 FPS, indicating a severe throughput limitation.

The memory configuration is a notable weakness. The Arc B390 uses System Shared memory, meaning it relies on the CPU’s DDR5 memory rather than dedicated VRAM. The memory bandwidth is listed as “System Dependent,” which in this configuration is tied to the Intel Core Ultra 7 270K Plus’s dual-channel memory bus rated at 115.2 GB/s. This shared bandwidth is a bottleneck, especially at higher resolutions where the GPU needs to access larger textures and frame buffers. The measured FPS drops from High to Ultra settings at each resolution (e.g., from 51 to 41 FPS at 1440p) suggest that increased memory pressure from higher-quality textures disproportionately impacts performance.

The GPU’s FP32 performance is rated at 7.680 TFLOPS, which is respectable on paper for an integrated solution, but the actual gaming results fall short of what that number might imply. The combination of shared memory, limited ROPs (24), and a relatively low fill rate creates a situation where the GPU is consistently the limiting factor. The boost clock of 2500 MHz is high, but the architecture cannot sustain performance under sustained load, as evidenced by the frame rate drops at 4K. The data shows that the Arc B390 is adequate for 1080p gaming at medium presets, but it is out of its depth at higher resolutions.

CPU Role

The Intel Core Ultra 7 270K Plus is a high-end desktop processor with 24 cores and 24 threads, based on the Arrow Lake Refresh architecture. It has a base clock of 3.70 GHz and a boost clock of 5.50 GHz, with a TDP of 125 W. The cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3 cache. This CPU is designed for heavy multitasking and productivity workloads, as reflected in its Cinebench R23 multi-core score of 44253 and single-core score of 2439.

In the context of Doom, the CPU’s role is to handle game logic, physics, and draw calls. The game is not particularly CPU-intensive by modern standards, and the data confirms that the Core Ultra 7 270K Plus is more than sufficient. The measured FPS differences between settings at the same resolution are entirely attributable to GPU load changes, not CPU limitations. For example, at 1080p, the FPS ranges from 64 on Ultra to 107 on Low, a variance driven by GPU workload. The CPU’s single-thread performance, highlighted by a Passmark single-thread score of 5068, is ample for the game’s requirements.

The processor’s 24 threads are largely underutilized in Doom, which typically scales well with a handful of cores. The benchmark results show that the CPU sits in the 96th percentile of all CPUs, with an average benchmark score of 93785. Its nearest rivals include the Intel Xeon 6520P (93786) and AMD EPYC 4564P (95183), which are also high-core-count server processors. This positioning indicates that the CPU is overqualified for gaming at this level. The bottleneck is unequivocally the GPU, as the CPU is capable of delivering far higher frame rates if paired with a more powerful graphics solution.

The memory bandwidth of 115.2 GB/s, provided by the dual-channel DDR5 support, is shared with the GPU. This shared resource can become a contention point, particularly at 4K where the GPU’s demand for texture data increases. However, the CPU’s high L3 cache (36 MB) helps mitigate some of this pressure by storing frequently accessed game data. The measured performance shows that the CPU is not the limiting factor; even at 1080p Low, the 107 FPS ceiling is likely imposed by the GPU’s rendering speed, not the CPU’s ability to process frames. The data supports a verdict that this CPU has significant headroom for future GPU upgrades.

How This Combo Ranks

The combo rank for this specific pairing in Doom is 2580 out of 2930 tested combinations. This places the system in the bottom 12% of all tested configurations, a reflection of the GPU’s weak performance. The rank is not a commentary on the CPU, which is a top-tier component, but rather on the integrated graphics solution that drags the overall result down. The percentile rankings of the individual components highlight the disparity: the CPU is in the 96th percentile, while the GPU is in the 9th percentile.

This mismatch is the defining characteristic of the combo. The data shows that the CPU’s performance ceiling is far above what the GPU can deliver, meaning the system is inherently unbalanced for gaming. In comparison to other combos, this pairing would likely rank higher in CPU-bound scenarios or productivity tasks, but in Doom, the GPU dictates the experience. The rank of 2580 suggests that most other tested systems, even those with older or lower-end CPUs, achieve better frame rates because they have more capable discrete GPUs.

The deltaPct values for the GPU’s nearest rivals show that the Arc B390 is marginally ahead of the NVIDIA GeForce GT 520MX by 1.3%, but behind the AMD EPYC 4564P by 1.5% in CPU benchmarks. These small margins in synthetic tests translate to similar small differences in gaming performance. The combo rank should be interpreted as a warning: this system is not designed for high-refresh-rate or high-resolution gaming. It is a productivity-focused configuration where the GPU is an afterthought, and the benchmark data confirms that this pairing underperforms in Doom.

Measured FPS Breakdown

The measured FPS data provides a complete picture of performance across three resolutions and four settings presets. At 1920x1080, the Low preset delivers an average of 107 FPS, which is the highest score recorded for this combo. The Medium preset averages 93 FPS, with a minimum of 79 FPS and a maximum of 107 FPS. The High preset drops to 78 FPS, and the Ultra preset averages 64 FPS. This range shows that at 1080p, the system can achieve playable frame rates on all presets, though the Ultra preset’s 64 FPS is on the edge of what is acceptable for a fast-paced shooter.

At 2560x1440, the performance drops significantly. The Low preset averages 69 FPS, which is still playable but noticeably less smooth than 1080p. The Medium preset averages 60 FPS, with a minimum of 51 FPS and a maximum of 69 FPS. The High preset averages 51 FPS, and the Ultra preset averages 41 FPS. The 41 FPS on Ultra is marginal for a game like Doom, where quick reactions are essential. The minimum frame rate of 51 FPS on Medium indicates that there are moments of significant stutter, which could disrupt gameplay.

At 3840x2160, the system struggles to maintain playable performance. The Low preset averages 37 FPS, which is below the 60 FPS target for most gamers. The Medium preset averages 33 FPS, with a minimum of 28 FPS and a maximum of 37 FPS. The High preset averages 28 FPS, and the Ultra preset averages 22 FPS. These numbers are all below the playable threshold, and the minimum frame rates suggest that the experience would be choppy and frustrating. The 4K resolution is simply not viable for this combo, even at the lowest settings.

The differences between presets at each resolution are consistent, with Low being the fastest and Ultra being the slowest. The gap between Low and Ultra is 43 FPS at 1080p, 28 FPS at 1440p, and 15 FPS at 4K. This narrowing gap at higher resolutions indicates that the GPU is becoming the dominant constraint, and the quality settings have diminishing returns as the pixel workload increases. The frame rate data reinforces the conclusion that the Arc B390 is the limiting factor, regardless of resolution or settings.

Settings Recommendations

Based on the measured FPS data, the optimal settings for this combo depend heavily on the target resolution. At 1920x1080, the Medium preset offers the best balance between visual quality and performance. The 93 FPS average is comfortably above the 60 FPS threshold, and the minimum of 79 FPS ensures a smooth experience without major dips. The High preset at 78 FPS is also viable, but the Medium preset provides a more substantial margin for frame time consistency. The Ultra preset at 64 FPS is playable, but the reduced headroom could lead to noticeable stutters in intense combat scenes.

At 2560x1440, the Low preset is the only recommendation that guarantees playable performance. The 69 FPS average is acceptable, but the Medium preset at 60 FPS is borderline, with a minimum of 51 FPS that could cause issues. For users who prioritize smoother gameplay over visual fidelity, the Low preset is the safer choice. The High preset at 51 FPS and Ultra at 41 FPS are not recommended, as they fall below the playable threshold for a fast-paced FPS.

At 3840x2160, no preset delivers a satisfactory experience. The Low preset’s 37 FPS is the highest score, but it is still below the 60 FPS target and would result in a choppy experience. The Medium preset at 33 FPS is worse, and the High and Ultra presets at 28 and 22 FPS respectively are unplayable. The data suggests that 4K gaming is not feasible with this combo, and users should either lower their resolution or adjust their expectations.

The overall recommendation is to play at 1920x1080 with the Medium preset. This configuration provides a playable experience with a reasonable balance of visual quality and performance. For users who must use a higher resolution, the Low preset at 1440p is the best compromise, but it still represents a significant downgrade from the 1080p experience. The data indicates that this system is best suited for 1080p gaming at medium settings, and pushing beyond that will result in a subpar experience.