Doom

# Doom Performance Analysis: Intel Core Ultra 5 125H + AMD Radeon RX 7900M

The combination of the Intel Core Ultra 5 125H and AMD Radeon RX 7900M delivers a thoroughly playable Doom experience across all tested resolutions, with the data showing a clear GPU-bound scenario at 4K that transitions to a more balanced workload as resolution drops. At 1080p, this combo produces exceptionally high frame rates that will satisfy even the most demanding competitive players, while 4K Ultra remains the only setting that dips below the 60 FPS threshold. The benchmark results indicate that this pairing is well-suited for Doom's fast-paced action, with the GPU's substantial memory bandwidth and the CPU's 14-core architecture combining to eliminate most potential bottlenecks.

Resolution Scaling

The measured FPS data reveals a predictable but significant scaling pattern as resolution increases from 1080p to 4K. At 1080p with High settings, the combo achieves 190 FPS average, which drops to 123 FPS at 1440p and further to 67 FPS at 4K. This represents a 35% performance reduction from 1080p to 1440p, followed by a 46% reduction from 1440p to 4K. The scaling pattern strongly indicates that the AMD Radeon RX 7900M becomes the limiting component at higher resolutions, as the frame rate decline closely tracks the pixel count increase.

The Low settings preset demonstrates the most extreme scaling behavior. At 1080p Low, the system produces 258 FPS average, which is the highest measured result in the entire dataset. Dropping to 1440p Low yields 167 FPS, and 4K Low still manages 90 FPS. The gap between 1080p and 4K at Low settings is 168 FPS, or approximately 65% lower performance at 4K. This substantial drop confirms that even at minimal graphical loads, the GPU's rendering throughput is the primary constraint rather than the CPU's processing capability.

Medium settings show a similar trajectory with 225 FPS at 1080p, 145 FPS at 1440p, and 79 FPS at 4K. The Medium preset at 4K includes min/max values of 67 and 91 FPS respectively, indicating some frame-time variance but still maintaining playable performance. Ultra settings produce the lowest results across all resolutions, with 155 FPS at 1080p, 100 FPS at 1440p, and 54 FPS at 4K. The 4K Ultra result falls below the 60 FPS threshold, representing the only configuration in the dataset that fails to maintain smooth gameplay.

The scaling efficiency between resolutions suggests that the RX 7900M's 16 GB of GDDR6 memory and 576.0 GB/s bandwidth are sufficient for Doom's requirements at 4K, as the performance drops are consistent with pixel-count increases rather than memory capacity limitations. The 256-bit memory bus and 18 Gbps effective memory speed provide ample bandwidth for this 2016 title, which was not designed for such high-end modern hardware.

How This Combo Ranks

This specific CPU-GPU combination ranks 1226 out of 2930 tested combos for Doom, placing it in the upper-middle tier of all possible pairings. This position reflects the strong performance of both components individually, yet indicates that there are many combinations that deliver higher frame rates in this particular title. The rank of 1226 with 2930 total combos means approximately 42% of tested configurations perform better, while 58% perform worse.

The GPU's percentile ranking is notably strong at 94, meaning the RX 7900M outperforms 94% of all GPUs in the benchmark database. This high percentile aligns with the measured frame rates, which are well above playable thresholds for most settings. The CPU's percentile of 79 is also respectable, though it lags behind the GPU's relative standing. This discrepancy suggests that in CPU-bound scenarios, the Ultra 5 125H might hold back the RX 7900M somewhat, but Doom's engine appears to distribute load effectively enough that this rarely manifests in the measured data.

The combination's rank of 1226 is somewhat surprising given the GPU's 94th percentile ranking, but this can be attributed to the CPU's lower 79th percentile and the specific demands of Doom's engine. Games that are more GPU-intensive would likely see this combo rank higher, while CPU-heavy titles would rank lower. The delta between the CPU and GPU percentiles highlights an inherent imbalance in this pairing for certain workloads, though Doom does not appear to suffer significantly from this mismatch.

Comparatively, the RX 7900M sits near the AMD Radeon Pro VII in average benchmark score, with a delta of only 0.4% in favor of the Pro VII. The NVIDIA Quadro RTX 6000 scores 4.3% higher, while the AMD Radeon Instinct MI60 and NVIDIA RTX A4500 score 5.4% and 6.3% lower respectively. These comparisons place the RX 7900M in a competitive position among professional-grade GPUs, which translates to strong gaming performance in Doom.

CPU Role

The Intel Core Ultra 5 125H features 14 cores and 18 threads, built on the Meteor Lake architecture with a 7 nm process node. Its base clock of 3.60 GHz and boost clock of 4.50 GHz provide solid single-threaded performance for gaming workloads, while the 18 MB of shared L3 cache helps reduce memory latency. The CPU's 28 W TDP indicates a mobile-focused design, yet it delivers desktop-class performance in this gaming scenario.

In Doom, the CPU's role appears secondary to the GPU at higher resolutions, as evidenced by the frame rate scaling patterns. However, at 1080p Low settings where the system achieves 258 FPS, the CPU's processing capability becomes more relevant. The 14-core configuration with 18 threads provides ample parallel processing for Doom's engine, which can utilize multiple cores for physics, AI, and rendering tasks. The 2 MB L2 cache per core and 112 KB L1 cache per core ensure that frequently accessed data remains close to the processing units.

The CPU's benchmark scores support its capability for gaming. The Cinebench R23 multi-core score of 12804.5 and single-core score of 1647.5 indicate strong all-around performance, while the PassMark single-thread score of 3399 confirms capable per-core performance. The PassMark physics score of 1439 is particularly relevant for gaming, as physics calculations often become a bottleneck in fast-paced titles.

The CPU's nearest rivals in average benchmark score include the AMD Ryzen 7 5800 with a delta of -0.1%, the Intel Core i5-12600K at -0.3%, and the AMD Ryzen 7 5700X also at -0.3%. The AMD Ryzen 3 PRO 5355G scores 0.5% higher. These close deltas indicate that the Ultra 5 125H performs competitively with established desktop CPUs, despite its mobile form factor and lower TDP.

Measured FPS Breakdown

At 1920x1080 resolution, the combo achieves its highest frame rates across all settings. Low settings produce 258 FPS average, Medium settings yield 225 FPS with min/max of 191 and 258, High settings deliver 190 FPS, and Ultra settings still manage 155 FPS. These results indicate that at 1080p, the system has substantial headroom even at maximum quality settings, with all presets exceeding 144 FPS for smooth high-refresh-rate gameplay.

Moving to 2560x1440, the frame rates remain highly playable but show a clear step down. Low settings produce 167 FPS, Medium settings deliver 145 FPS with min/max of 124 and 167, High settings yield 123 FPS, and Ultra settings achieve 100 FPS. The 1440p results show that even Ultra settings maintain triple-digit frame rates, making this resolution an excellent choice for high-quality gaming without sacrificing smoothness.

At 3840x2160, the performance drops become more pronounced. Low settings still deliver 90 FPS, Medium settings produce 79 FPS with min/max of 67 and 91, High settings yield 67 FPS, and Ultra settings drop to 54 FPS. The 4K results show that the system can handle 4K gaming at Medium or High settings with playable frame rates, but Ultra settings fall below the 60 FPS threshold for smooth gameplay.

The Medium settings preset is the only one in the dataset with complete min/max data across all resolutions. At 1080p, the min of 191 and max of 258 FPS show a 67 FPS range, indicating some frame-time variation but no problematic dips. At 1440p, the min of 124 and max of 167 FPS show a similar 43 FPS range. At 4K, the min of 67 and max of 91 FPS represent a 24 FPS range, demonstrating more consistent frame pacing at higher resolutions where the GPU is more uniformly loaded.

GPU Role

The AMD Radeon RX 7900M is a powerful mobile GPU built on the RDNA 3.0 architecture with a 5 nm process node from TSMC. It features 4608 shading units, 288 texture mapping units, and 192 render output units, providing substantial parallel processing capability. The GPU's 16 GB of GDDR6 memory on a 256-bit bus delivers 576.0 GB/s of bandwidth, which proves sufficient for Doom's texture and geometry requirements at all tested resolutions.

The GPU's clock speeds of 1825 MHz base and 2090 MHz boost, combined with a 180 W TDP, indicate a high-performance mobile solution that operates near desktop-class levels. The 72 ray tracing cores are present but largely unused in Doom, which is a traditional rasterization-based title from 2016. The GPU's pixel rate of 401.3 GPixel/s and texture rate of 601.9 GTexel/s provide the raw throughput needed for the high frame rates observed in the benchmark results.

The RX 7900M's 3DMark Steel Nomad DX12 score of 4201 and Geekbench Vulkan score of 158760 confirm its strong graphics performance. The Geekbench OpenCL score of 129499 further validates the GPU's compute capabilities. These benchmark scores place the RX 7900M at the 94th percentile of all GPUs, with an average benchmark score of 97487.

The GPU's nearest rivals in average benchmark score include the AMD Radeon Pro VII at 0.4% higher, the NVIDIA Quadro RTX 6000 at 4.3% higher, and the AMD Radeon Instinct MI60 and NVIDIA RTX A4500 at 5.4% and 6.3% lower respectively. These comparisons show that the RX 7900M competes with professional workstation GPUs, which explains its strong performance in Doom across all settings and resolutions.

Settings Recommendations

For 4K gaming, the data clearly indicates that Medium settings provide the best balance of visual quality and performance. The 79 FPS average at 4K Medium represents a significant improvement over High settings' 67 FPS, while maintaining respectable visual fidelity. Ultra settings at 4K should be avoided, as the 54 FPS average falls below the smooth gameplay threshold and may result in noticeable stuttering during intense action sequences.

At 1440p, Ultra settings are the recommended choice, as the 100 FPS average provides excellent smoothness while maximizing visual quality. The High settings preset at 1440p delivers 123 FPS, which could be preferred by competitive players seeking higher refresh rates, but the Ultra preset's 100 FPS still offers exceptional responsiveness for Doom's fast-paced combat. Medium settings at 1440p with 145 FPS are suitable for players prioritizing frame rate above all else.

For 1080p gaming, the system has enough performance headroom that even Ultra settings maintain 155 FPS average. Players with 144 Hz monitors will find Ultra settings perfectly adequate, while those with 240 Hz displays may prefer High settings at 190 FPS or Medium settings at 225 FPS. The Low settings preset at 258 FPS is only recommended for extreme competitive scenarios where maximum frame rate is paramount, as the visual quality reduction is substantial.

The Medium settings preset appears to be the sweet spot for this combo, offering the most consistent frame pacing across all resolutions. The complete min/max data for Medium settings shows no problematic frame drops, with the 4K minimum of 67 FPS still exceeding the 60 FPS threshold for smooth gameplay. This consistency makes Medium settings the safest recommendation for players who value stable performance across varying scene complexity.