Doom

The Intel Core Ultra 9 275HX paired with the NVIDIA GeForce RTX 4080 Mobile delivers a decisive performance profile in Doom, characterized by extreme high-refresh capability at 1080p and a predictable, GPU-bound decline as resolution increases. The measured data indicates a system that is fundamentally overqualified for the game's engine at lower resolutions, shifting to a more balanced load at 4K where the GPU becomes the primary constraint.

Resolution Scaling

The FPS progression across resolutions reveals a classic GPU-bound scaling curve, though the absolute numbers are unusually high. At 1080p, the combo produces an average of 212 FPS on High settings, which jumps to 288 FPS on Low. This indicates that at 1080p, the rendering pipeline is operating well beyond the typical refresh rate ceiling, suggesting the CPU and memory subsystem are feeding the GPU efficiently without becoming a bottleneck. The delta between Low and High at 1080p is 76 FPS, showing that the GPU still has headroom to respond to settings changes even at this resolution.

Moving to 1440p, we observe a substantial drop that confirms the GPU’s workload is increasing. At High settings, the average falls from 212 FPS to 137 FPS, a 35% reduction. This is a significant scaling factor, indicating that the RTX 4080 Mobile is beginning to feel the pressure of additional pixel count, but the resulting 137 FPS remains exceptionally smooth for competitive play. The Low preset at 1440p yields 186 FPS, which is still higher than the 4K High result, underscoring the resolution's impact.

At 4K (3840x2160), the scaling becomes steep. The High preset average drops to 74 FPS, which is a 46% decrease from the 1440p High result. This is a classic sign of the GPU reaching its limits, as the fill rate and memory bandwidth (432.0 GB/s) are taxed by the 8.3 million pixels. The gap between Low (101 FPS) and High (74 FPS) at 4K is 27 FPS, a smaller absolute difference than at lower resolutions, confirming that the GPU is the limiting component; settings changes have a diminishing return when the shader units are already saturated. The data suggests that for a fixed 60 FPS target, the Ultra preset at 4K (61 FPS) is the absolute ceiling, with no headroom for frame time spikes.

CPU Role

The Intel Core Ultra 9 275HX is a 24-core, 24-thread processor based on the Arrow Lake-HX architecture, built on a 3 nm process. Its benchmark results place it in the 94th percentile of all CPUs, with an average benchmark score of 67,469. In the context of Doom, a game that is not typically multithreaded to the extreme, this processor’s role is to provide a vast reservoir of single-thread performance and enough multi-core throughput to avoid any frame pacing issues.

The CPU’s boost clock of 5.40 GHz is crucial here. Doom’s engine relies heavily on a few primary threads for game logic and draw call submission. The data from the measured FPS shows that at 1080p Low, the system reaches 288 FPS. At this frame rate, the CPU must prepare a frame every 3.47 milliseconds, a demanding task that requires high IPC and clock speed. The Core Ultra 9’s Cinebench R23 single-core score of 2,204 points indicates it has the raw computational power to handle this load, as the FPS does not appear to plateau or become erratic at high frame rates.

Comparing to its nearest rivals, the Core Ultra 9 275HX sits in a tight cluster. It is 0.3% behind the Intel Xeon w5-3525 and 0.5% behind the AMD EPYC 4484PX in average benchmark score, but these are multi-threaded scores that are less relevant for gaming. The advantage of the Core Ultra 9 is its high boost clock and modern architecture, which translates to superior single-threaded performance (Geekbench single-core score of 2,458), a factor that is more predictive of Doom’s performance than raw core counts. The 36 MB of shared L3 cache also helps to keep frequently accessed game assets closer to the cores, reducing memory latency.

GPU Role

The NVIDIA GeForce RTX 4080 Mobile is the dominant factor in this configuration, especially at higher resolutions. Based on the AD104 chip with an Ada Lovelace architecture, it features 7,424 shading units, 232 texture mapping units, and 80 ROPs. Its 12 GB of GDDR6 memory on a 192-bit bus provides a bandwidth of 432.0 GB/s, which is sufficient for the texture-heavy environments of Doom at 4K.

The GPU’s benchmark scores place it in the 81st percentile, with an average score of 38,135. The data shows that the GPU is the scaling bottleneck as resolution increases. At 1080p, the GPU is so fast that it can render frames faster than the display can likely show them, but it is still responsive to settings changes. At 4K, the GPU’s raw throughput (24.72 TFLOPS FP32) is the primary limiter. The pixel rate of 133.2 GPixel/s is relevant, as this determines how quickly the ROPs can write to the framebuffer. At 4K, the GPU must process 8.3 million pixels per frame, and the performance drop from 101 FPS (Low) to 61 FPS (Ultra) illustrates how the shading load and memory traffic increase with quality settings.

It is notable that the RTX 4080 Mobile’s nearest rivals in the database are not direct desktop equivalents. It is 0.6% behind the RTX 5080 Mobile in average score and 1.3% ahead of the NVIDIA GeForce RTX 4070. This suggests that the 4080 Mobile occupies a high-end mobile tier, but the comparison to the RTX 4070 (a desktop card) indicates that its performance is not strictly limited by mobile power constraints in this benchmark suite. In Doom, the GPU’s 12 GB VRAM is not a limiting factor, as the game’s textures fit comfortably within that capacity even at 4K Ultra.

FAQ

*Q: What is the maximum average FPS this combo can achieve in Doom?*

A: The highest measured average FPS is 288, achieved at 1920x1080 with the Low preset.

Q: Can this system maintain 4K gaming at high refresh rates?

A: No. At 3840x2160, the highest average FPS is 101 on Low settings. The High preset only achieves 74 FPS, and Ultra drops to 61 FPS. This indicates 4K is limited to 60 Hz-class performance.

Q: How does the CPU compare to its closest rivals in overall performance?

A: The Intel Core Ultra 9 275HX has an average benchmark score of 67,469, which is 0.3% lower than the Intel Xeon w5-3525 and 0.5% lower than the AMD EPYC 4484PX, but 0.7% higher than the Intel Xeon 6515P.

Q: What is the impact of switching from Medium to Ultra settings at 1440p?

A: At 2560x1440, the Medium preset averages 162 FPS, while Ultra averages 112 FPS. This represents a 50 FPS drop, which is a significant trade-off for visual fidelity.

Q: Is the GPU or the CPU the limiting factor at 1080p?

A: The data suggests the GPU is not the primary limiter at 1080p. The huge FPS ceiling (288 on Low) and the large difference between Low and High settings (76 FPS) indicate the GPU is still capable of scaling, while the CPU must sustain the high frame rate.

Q: What is the minimum FPS recorded for the Medium preset?

A: The measured minimum FPS for the Medium preset is 213 at 1920x1080, 138 at 2560x1440, and 75 at 3840x2160.

Measured FPS Breakdown

The following table details the exact average FPS values recorded for all tested configurations.

| Resolution | Settings | Average FPS | Min FPS | Max FPS |

| :--------- | :------- | :---------- | :------ | :------ |

| 1920x1080 | Low | 288 | - | - |

| 1920x1080 | Medium | 251 | 213 | 289 |

| 1920x1080 | High | 212 | - | - |

| 1920x1080 | Ultra | 173 | - | - |

| 2560x1440 | Low | 186 | - | - |

| 2560x1440 | Medium | 162 | 138 | 187 |

| 2560x1440 | High | 137 | - | - |

| 2560x1440 | Ultra | 112 | - | - |

| 3840x2160 | Low | 101 | - | - |

| 3840x2160 | Medium | 88 | 75 | 101 |

| 3840x2160 | High | 74 | - | - |

| 3840x2160 | Ultra | 61 | - | - |

The data shows a consistent pattern: the gap between Low and Ultra narrows as resolution increases. At 1080p, the delta is 115 FPS; at 1440p, it is 74 FPS; at 4K, it is 40 FPS. This confirms that the GPU’s pixel processing capacity is the bottleneck at higher resolutions, making settings adjustments less impactful.

Settings Recommendations

For the best experience at 1920x1080, the High preset is the recommended starting point, delivering 212 FPS. This provides a significant visual improvement over Medium (251 FPS) while still maintaining frame rates far above any standard display’s refresh rate. The Ultra preset at 173 FPS is also viable if maximum image quality is desired, as the performance penalty is not prohibitive for most users.

At 2560x1440, the High preset at 137 FPS offers the optimal balance for high-refresh monitors (144Hz class). While the Medium preset achieves 162 FPS, the visual quality reduction is noticeable. The Ultra preset at 112 FPS may be suitable for users prioritizing visuals over frame rate, but the 25 FPS drop from High suggests the High preset is the more efficient choice for competitive play.

At 3840x2160, the recommendation is more nuanced. The Medium preset at 88 FPS is the sweet spot for a smooth 4K experience, as it provides a 14 FPS improvement over High (74 FPS) with a modest quality reduction. The Low preset at 101 FPS is the only way to approach 100 FPS at 4K, but the visual compromise is severe. The Ultra preset at 61 FPS is only recommended for players who absolutely require maximum settings and have a 60 Hz display, as there is no headroom for frame time variance.

How This Combo Ranks

The combination of the Intel Core Ultra 9 275HX and NVIDIA GeForce RTX 4080 Mobile ranks at position 1,222 out of 3,712 tested combos in Doom. This places it in the upper third of all configurations, specifically at the 32.9th percentile (calculated as 1222/3712). This is a strong ranking, indicating that this mobile setup outperforms the majority of other systems tested, which include desktop and older mobile parts.

Given the CPU’s 94th percentile ranking and the GPU’s 81st percentile ranking, the combo’s overall rank is slightly lower than the CPU’s individual standing. This is expected, as the GPU becomes the limiting factor in this specific game at higher resolutions. The 1,222nd rank suggests that many other combos, likely with more powerful desktop GPUs, surpass this mobile solution in raw 4K performance. However, the data indicates that for 1080p and 1440p gaming, this combo is exceptionally competitive, as the high CPU performance ensures no artificial frame caps are hit. The ranking reflects a system that is well-balanced for high-refresh esports titles, but it is not positioned to dominate the 4K ultra-settings leaderboards.