Doom

The Intel Core Ultra X9 388H paired with the NVIDIA GeForce RTX 5070 Mobile delivers a compelling 1080p and 1440p experience in Doom, but the data shows a sharp performance cliff at 4K where the GPU becomes the clear limiting factor. The measured frame rates indicate that this combo ranks in the 55th percentile of all tested combinations, offering high refresh rate capability at mainstream resolutions while struggling to maintain smooth gameplay at Ultra HD.

Resolution Scaling

The performance drop from 1080p to 4K is dramatic and reveals the bottleneck dynamics of this system. At 1920x1080 with Low settings, the combo produces 224 FPS, which falls to 145 FPS at 2560x1440 and then plummets to 79 FPS at 3840x2160. This represents a 64.7% reduction in frame rate from 1080p to 4K at Low settings, indicating that the GPU is being pushed to its absolute limits at higher resolutions.

The scaling pattern becomes even more telling when examining the High preset. At 1080p High, the system achieves 165 FPS, dropping to 107 FPS at 1440p and then 58 FPS at 4K. The transition from 1440p to 4K alone costs 45.8% of the frame rate, a steep decline that points squarely at the RTX 5070 Mobile's 8 GB GDDR7 memory and 128-bit bus as the constraining factor. The 384.0 GB/s memory bandwidth simply cannot feed the shading units fast enough at 4K pixel counts.

The Ultra preset tells an even more cautionary tale. At 4K Ultra, the average FPS drops to 47, which falls below the 60 FPS threshold many players consider minimum for smooth gameplay. The gap between Low and Ultra at 4K is 32 FPS (79 versus 47), while at 1080p that same gap is 89 FPS (224 versus 135). This compression of the settings range at 4K suggests that the GPU is so saturated that even reducing graphical fidelity cannot fully compensate for the resolution overhead.

Interestingly, the Medium preset provides the only complete data set with min and max FPS values across all resolutions. At 4K Medium, the average is 68 FPS with a minimum of 58 FPS, while at 1440p Medium the average is 126 FPS with a minimum of 107 FPS. These minimum frame rates are crucial because they represent the worst-case dips during intense combat sequences. The 4K Medium minimum of 58 FPS is dangerously close to the edge of playability, whereas the 1440p Medium minimum of 107 FPS provides substantial headroom.

The data strongly suggests that this combo is optimized for 1080p and 1440p gaming. At 1080p, even Ultra settings maintain 135 FPS, which is well above the refresh rate of most standard monitors. The 1440p High setting at 107 FPS is also excellent for high-refresh displays. However, 4K gaming requires significant settings compromises, and even then, the minimum frame rates remain borderline.

How This Combo Ranks

The combo rank of 2056 out of 3712 tested combinations places this system in the middle-to-upper tier of all hardware pairings tested for Doom. This percentile position of approximately 55% means that while this combo outperforms a majority of systems, it is not among the elite performers. The ranking reflects a balanced but not exceptional pairing, where the CPU and GPU complement each other adequately without either component being a standout performer.

The CPU's percentile rank of 88 among all processors is notably higher than the GPU's percentile of 75 among all graphics cards. This discrepancy suggests that the processor has more headroom than the graphics solution, which is consistent with the resolution scaling data showing GPU limitation at 4K. The Intel Core Ultra X9 388H performs within 0.2% of the AMD Ryzen 5 7500X3D and 0.3% ahead of the Intel Core i9-13950HX in average benchmark scores, placing it in elite company for CPU performance.

However, the GPU comparison reveals a different story. The RTX 5070 Mobile sits essentially tied with the RTX 3070 Ti (0.1% slower) and RTX 2080 Ti (0.5% faster), while being 0.6% behind the AMD Radeon RX 6800. This places the mobile GPU in the performance class of previous-generation desktop cards, which explains the 4K struggles. The GPU's average benchmark score of 29928 is respectable but not groundbreaking, and its percentile rank of 75 indicates that a quarter of all tested GPUs outperform it.

The combination of a top-tier CPU with a mid-to-upper-tier GPU creates a system that is CPU-bound at lower resolutions but GPU-bound at higher resolutions. This is evident in the measured FPS data, where the 1080p results show the CPU's capability to push very high frame rates, while the 4K results are constrained by the GPU's limits. For players prioritizing high refresh rates at 1080p or 1440p, this combo ranks well; for those seeking 4K performance, the ranking would be less favorable.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend heavily on the target resolution and desired frame rate. At 1080p, Ultra settings at 135 FPS provide the best visual quality while maintaining frame rates suitable for high-refresh monitors. The jump from High to Ultra costs 30 FPS (165 to 135), but the visual fidelity improvement in Doom's fast-paced environments can be worthwhile for players with 144Hz displays who can still utilize the headroom.

For 1440p, the High preset at 107 FPS strikes the best balance between visual quality and performance. The Ultra preset at 87 FPS is still playable but leaves less margin for demanding scenes, while the Medium preset at 126 FPS offers higher frame rates at the cost of visual detail. The data shows that High at 1440p provides a 20 FPS advantage over Ultra while maintaining a minimum frame rate of 107 FPS, which is a comfortable margin above the 60 FPS threshold.

At 4K, the recommendations become more nuanced. The Medium preset at 68 FPS average with a 58 FPS minimum is the only settings level that approaches playable frame rates, but the minimum dips are concerning. The High preset at 58 FPS average will likely experience noticeable stuttering during intense combat, while Ultra at 47 FPS is not recommended for competitive play. For 4K, players should either accept Medium settings with the understanding that frame drops will occur, or consider lowering the resolution to 1440p for a significantly better experience.

The Low preset, while offering the highest frame rates at every resolution (224 FPS at 1080p, 145 FPS at 1440p, 79 FPS at 4K), sacrifices too much visual quality for most players. The jump from Low to Medium at 1080p costs 29 FPS (224 to 195), but the visual improvement is substantial. At 1440p, the Low to Medium transition costs 19 FPS (145 to 126), which is a reasonable trade-off for better visuals.

Measured FPS Breakdown

The complete FPS data reveals consistent scaling patterns across all settings and resolutions. At 1920x1080, the system delivers 224 FPS at Low, 195 FPS at Medium, 165 FPS at High, and 135 FPS at Ultra. The Medium preset shows a minimum of 166 FPS and maximum of 224 FPS, providing a complete picture of performance variance. This 1080p data demonstrates that the combo can easily drive high-refresh monitors at any settings level.

At 2560x1440, the performance remains strong but shows more sensitivity to settings. Low delivers 145 FPS, Medium achieves 126 FPS (with min/max of 107/145), High produces 107 FPS, and Ultra drops to 87 FPS. The scaling from Low to Ultra at 1440p shows a 40% reduction in frame rate, indicating that the GPU is beginning to feel the pressure of increased pixel count.

The 3840x2160 results show the most dramatic settings impact. Low produces 79 FPS, Medium averages 68 FPS (with min/max of 58/79), High drops to 58 FPS, and Ultra falls to 47 FPS. The difference between Low and Ultra at 4K is 32 FPS, which is the smallest absolute gap across all resolutions, confirming that the GPU is saturated regardless of settings. The Medium preset's minimum of 58 FPS is particularly telling, as it represents the lowest point the system can guarantee during gameplay.

The data shows a consistent pattern where the Medium preset provides the most complete performance picture, with both minimum and maximum FPS recorded at every resolution. This suggests that Medium represents the most balanced setting for this hardware combination, offering the best compromise between visual quality and performance stability across all resolutions.

FAQ

Q: Can this combo run Doom at 4K 60 FPS?

A: Only at Medium settings, where the average FPS is 68 with a minimum of 58 FPS. At High settings, the average drops to 58 FPS, and at Ultra, it falls to 47 FPS. The 4K Medium preset is the only settings level that maintains an average above 60 FPS, but the minimum frame rate of 58 FPS means dips below 60 will occur.

Q: What is the best resolution for this hardware combination?

A: The data shows that 2560x1440 at High settings provides the best balance, with 107 FPS average and no recorded minimum below 107 FPS. This resolution offers significantly better visual detail than 1080p while maintaining frame rates well above the 60 FPS threshold.

Q: How does the RTX 5070 Mobile compare to desktop GPUs?

A: The GPU's average benchmark score of 29928 places it within 0.1% of the RTX 3070 Ti and 0.5% of the RTX 2080 Ti. It is 0.6% behind the AMD Radeon RX 6800 and 1.7% behind the RX 6700, indicating performance parity with previous-generation desktop cards.

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

A: At 1080p, the combo achieves 224 FPS at Low settings, which suggests the CPU is capable of very high frame rates. However, the GPU's percentile rank of 75 versus the CPU's 88 indicates that the GPU becomes the limiting factor as settings increase, even at 1080p.

Q: What minimum FPS can players expect at 1440p Medium?

A: The measured minimum FPS at 1440p Medium is 107 FPS, with a maximum of 145 FPS and an average of 126 FPS. This provides excellent performance stability with no dips below the 100 FPS threshold.

Q: How does this combo rank among all tested systems for Doom?

A: This combo ranks 2056 out of 3712 tested combinations, placing it in the 55th percentile. This means it outperforms more than half of all tested systems but is not among the top performers, consistent with its mid-to-upper-tier GPU and top-tier CPU.

CPU Role

The Intel Core Ultra X9 388H plays a critical role in enabling the high frame rates observed at 1080p and 1440p. With 16 cores and 16 threads, this Panther Lake-based processor provides substantial multi-threaded capability that Doom's engine can utilize for physics, AI, and streaming tasks. The 2.10 GHz base clock and 5.10 GHz boost clock allow the processor to scale performance dynamically, reaching high frequencies when single-threaded performance is needed.

The CPU's benchmark scores confirm its strength. A Cinebench R23 multi-core score of 18911 and single-core score of 2200.5 indicate strong performance across both heavily threaded and lightly threaded workloads. The PassMark multi-thread score of 36811 and single-thread score of 4280 further validate this processor's capability. These scores place the CPU in the 88th percentile among all tested processors, making it one of the stronger mobile CPUs available.

The cache hierarchy of 192 KB L1 per core, 3 MB L2 per core, and 18 MB shared L3 provides ample data storage for game assets. This cache configuration helps reduce memory latency, which is crucial for maintaining high frame rates in fast-paced FPS games like Doom. The 18 MB L3 cache is particularly beneficial for keeping frequently accessed game data close to the cores.

The CPU's memory support for LPDDR5X with dual-channel configuration and 153.6 GB/s bandwidth ensures that the processor can feed data to the GPU without becoming a bottleneck. This memory bandwidth is sufficient for the frame rates observed, although the GPU's 384.0 GB/s bandwidth is significantly higher, reflecting the different requirements of CPU and GPU workloads.

The 3 nm process node and 25 W TDP indicate that this is an efficient mobile processor that can sustain high performance without excessive power consumption. The PCIe Gen 5 interface with 4 lanes provides sufficient bandwidth for the RTX 5070 Mobile, although the GPU's PCIe 5.0 x16 interface is not fully utilized. This asymmetry is common in mobile platforms where space and power constraints limit PCIe lane availability.

The CPU's performance relative to its nearest rivals further contextualizes its role. It scores within 0.2% of the AMD Ryzen 5 7500X3D, 0.3% ahead of the Intel Core i9-13950HX, and 0.4% ahead of the AMD Ryzen AI Max 385. This places it in a tight competitive cluster where no single processor has a decisive advantage. For Doom specifically, this CPU performance ensures that the processor will not bottleneck the GPU at any resolution, as evidenced by the GPU-limited scaling at 4K.