Doom

The Intel Core Ultra 7 155H and AMD Radeon 880M combination delivers playable frame rates in Doom only at 1080p, with performance collapsing at higher resolutions. The data shows this is a fundamentally GPU-limited pairing for this title, where the integrated graphics solution acts as the primary bottleneck across all tested settings.

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

The Intel Core Ultra 7 155H is a 16-core, 22-thread mobile processor based on the Meteor Lake architecture, built on Intel's 7 nm process. It operates with a base clock of 3.80 GHz and a boost clock of 4.80 GHz, with a 28 W TDP. The CPU's cache configuration includes 112 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3 cache. Its memory interface supports dual-channel DDR5 with a bandwidth of 89.6 GB/s, which is directly relevant to the GPU's performance since the Radeon 880M uses system shared memory.

For Doom, the CPU's role is secondary to the GPU in determining frame rates. The benchmark results across all resolutions and settings show that the frame rates scale consistently with resolution changes, which is a classic indicator of GPU limitation. At 1080p Low, the combo reaches 90 FPS average, while at 4K Ultra, it drops to 19 FPS. This scaling pattern suggests the CPU has ample headroom; the processor is not the constraining factor even at the lowest resolution where CPU demands are typically highest relative to GPU load.

The CPU's multi-threaded capabilities are strong, with a Cinebench R23 multi-core score of 15028 and a single-core score of 1743. Its average benchmark score of 32697 places it in the 83rd percentile of all CPUs. Compared to its nearest rivals, the Intel Core i5-14600T scores 32707 (0% difference), the AMD Ryzen AI 7 PRO 360 scores 32662 (0.1% faster), the AMD Ryzen 5 7400F scores 32750 (-0.2% slower), and the AMD Ryzen 7 PRO 6850H scores 32812 (-0.4% slower). These near-identical scores indicate the Ultra 7 155H is competitively positioned in raw processing power.

Given that Doom was released in 2016 and is not particularly demanding on modern CPUs, the 155H's processing power is more than sufficient. The Passmark physics score of 1727 and the floating point math score of 63703 further confirm the processor's capability for handling game logic and physics calculations without becoming a bottleneck. The data indicates that even at 1080p with Low settings, where the CPU would be most stressed relative to the GPU, the frame rates are still limited by the graphics solution rather than the processor.

How This Combo Ranks — use comboRankInGame vs other tested combos

This specific CPU-GPU combination ranks 2858 out of 2930 tested combos for Doom, placing it in the bottom 2.5% of all configurations. This poor ranking is almost entirely attributable to the AMD Radeon 880M's limited graphics performance rather than the CPU's capabilities. The rank indicates that the vast majority of tested hardware combinations deliver higher frame rates in this title.

The ranking context becomes clearer when examining the GPU's standalone benchmarks. The Radeon 880M has an average benchmark score of 8436, placing it in the 43rd percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce GTX 675MX (8427, 0.1% faster), the NVIDIA GeForce MX330 (8458, -0.3% slower), the AMD Radeon HD 8870M (8462, -0.3% slower), and the AMD Radeon R9 M375X (8325, 1.3% slower). These comparisons show the 880M is roughly equivalent to a mid-range discrete GPU from several generations ago, which explains the low combo ranking.

For a game like Doom that was designed to run well on hardware from 2016, this combo's ranking suggests it falls short of what most gamers would consider acceptable for a smooth experience at higher resolutions. The combination's performance profile is consistent with what one would expect from an integrated GPU that shares system memory, as the 880M's bandwidth is "System Dependent" and its memory type is "System Shared." This architectural limitation directly impacts high-resolution performance, where memory bandwidth becomes increasingly critical.

The gap between this combo and the top performers in the database is substantial. With a rank of 2858 out of 2930, the data indicates that 97.5% of tested configurations outperform this pairing in Doom. This is not a reflection of poor engineering but rather the inherent limitations of using an integrated GPU for a game that rewards dedicated graphics hardware. The CPU's contribution to this ranking is neutral at worst, as its 83rd percentile standing among all CPUs shows it is a capable processor that simply cannot compensate for the GPU's constraints.

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

The resolution scaling data reveals a clear pattern of GPU limitation. At 1080p with Low settings, the combo achieves 90 FPS average. Moving to 1440p Low drops this to 58 FPS, a 35.6% reduction. At 4K Low, the frame rate falls to 31 FPS, which is 65.6% lower than the 1080p result. This steep decline with increasing resolution is the definitive signature of a GPU-bound scenario, where the rendering workload grows faster than the integrated GPU can handle.

The same pattern holds across all settings. At High settings, 1080p produces 66 FPS, 1440p produces 43 FPS (34.8% drop), and 4K produces 23 FPS (65.2% drop). At Medium settings, the progression is 78 FPS at 1080p, 51 FPS at 1440p, and 27 FPS at 4K. At Ultra settings, the numbers are 54 FPS, 35 FPS, and 19 FPS respectively. The consistent percentage drops across all settings reinforce that the GPU is the limiting component, not the CPU or memory subsystem.

The data also shows how the gap between settings narrows at higher resolutions. At 1080p, the difference between Low (90 FPS) and Ultra (54 FPS) is 36 FPS, representing a 40% performance penalty for maximum quality. At 4K, the difference between Low (31 FPS) and Ultra (19 FPS) is only 12 FPS, a 38.7% penalty. This narrowing suggests that at 4K, the GPU is so saturated that even reducing settings has diminishing returns, as the resolution itself is the dominant factor.

The implication for the limiting component is unambiguous. If the CPU were the bottleneck, we would expect frame rates to remain relatively constant across resolutions, since the CPU's workload is largely independent of resolution. Instead, the halving of performance from 1080p to 4K at every settings level points squarely at the Radeon 880M's rendering capabilities. The integrated GPU's 768 shading units, 48 texture mapping units, and 16 raster output pipelines are simply insufficient for high-resolution rendering in Doom.

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

At 1920x1080, the combo delivers its best performance. Low settings produce an average of 90 FPS, making this the only configuration in the entire dataset that reaches the 90 FPS threshold. Medium settings reduce the average to 78 FPS, with minimum and maximum readings of 66 and 90 FPS respectively. High settings yield 66 FPS average, and Ultra settings drop to 54 FPS average. All 1080p configurations exceed the 30 FPS playability threshold, with even the most demanding Ultra preset maintaining a playable frame rate.

At 2560x1440, performance becomes more marginal. Low settings average 58 FPS, which is still playable but represents a significant step down from 1080p. Medium settings average 51 FPS, with a minimum of 43 and maximum of 58 FPS. High settings produce 43 FPS average, while Ultra settings fall to 35 FPS average. The 1440p results indicate that only Low and Medium settings provide consistently smooth gameplay, with High and Ultra approaching the lower bounds of acceptable performance.

At 3840x2160, the combo struggles to maintain playability. Low settings average 31 FPS, which is technically above the 30 FPS threshold but leaves little margin for demanding scenes. Medium settings average 27 FPS, with a minimum of 23 and maximum of 31 FPS, indicating frequent dips below playable levels. High settings average 23 FPS, and Ultra settings average 19 FPS. None of the 4K configurations deliver a consistently smooth experience, and the data suggests this resolution is not viable for this hardware combination.

The full dataset shows a clear hierarchy: 1080p is the only resolution where all settings provide playable performance, 1440p is playable only at Low and Medium settings, and 4K is marginal at best. The Medium settings row at each resolution provides the most complete data with both minimum and maximum FPS values, showing the variability users can expect. At 1080p Medium, the range from 66 to 90 FPS indicates a 36% variance, while at 4K Medium, the range from 23 to 31 FPS shows a similar proportional variance but at much lower absolute values.

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

The AMD Radeon 880M is an integrated GPU based on the RDNA 3.5 architecture, built on TSMC's 4 nm process with 34,000 million transistors on a 233 mm² die. It operates with a base clock of 400 MHz and a boost clock of 2900 MHz, with a TDP of 15 W. The GPU features 768 shading units, 48 texture mapping units, 16 raster output pipelines, and 12 ray tracing cores. Its theoretical performance includes 46.40 GPixel/s pixel rate, 139.2 GTexel/s texture rate, and 4.454 TFLOPS FP32 performance.

The most critical limitation for Doom is the GPU's memory configuration. The 880M uses "System Shared" memory, meaning it relies on the system's DDR5 RAM rather than dedicated VRAM. The memory bandwidth is listed as "System Dependent," which in this configuration with the Ultra 7 155H's dual-channel memory provides 89.6 GB/s. This shared memory architecture creates a bottleneck for high-resolution rendering, as the GPU must compete with the CPU for memory bandwidth.

The GPU's benchmark scores contextualize its performance. Its Passmark G3D score is 7615, with a DirectX 11 score of 73 and a DirectX 12 score of 32. The 3DMark Steel Nomad DX12 score is 535, and the Geekbench OpenCL score is 31285. These numbers place the 880M in the 43rd percentile of all GPUs, with an average benchmark score of 8436. The nearest rivals include the NVIDIA GeForce GTX 675MX (8427, 0.1% faster), which is a discrete mobile GPU from 2012, highlighting the 880M's performance tier.

For Doom, the GPU's 16 ROPs are particularly relevant, as this limits the fill rate for pixel processing. The 46.40 GPixel/s pixel rate translates to approximately 46.4 million pixels per second, which is insufficient for 4K rendering where each frame requires over 8 million pixels. Even at 1080p, which requires about 2 million pixels per frame, the fill rate becomes a limiting factor at higher settings. The texture rate of 139.2 GTexel/s also constrains performance at higher resolutions where texture sampling demands increase exponentially.

The 880M's architecture supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, which means it can run Doom with all modern graphics features enabled. However, the hardware's raw throughput is the determining factor. The 4.454 TFLOPS FP32 performance is modest by modern standards, and the shared memory bandwidth of 89.6 GB/s is a fraction of what dedicated GPUs offer. These hardware characteristics directly explain the observed frame rates across all resolutions and settings.

Settings Recommendations — which preset gives the best experience per the measured rows

Based on the measured FPS data, the optimal experience for this combo is at 1920x1080 with Medium settings. This configuration delivers an average of 78 FPS with a minimum of 66 and maximum of 90 FPS. The Medium preset provides a 13.3% improvement over High settings (66 FPS) while maintaining visual quality that is still significantly better than Low. The 78 FPS average comfortably exceeds the 60 FPS threshold for smooth gameplay, and the minimum of 66 FPS ensures that even demanding scenes remain fluid.

At 1080p, Low settings are the only configuration that exceeds 90 FPS average, hitting exactly 90 FPS. However, the visual compromise of Low settings is substantial, and the Medium preset's 78 FPS is close enough that the extra visual fidelity is worth the 13.3% performance cost. Ultra settings at 1080p produce 54 FPS, which is playable but falls below the 60 FPS ideal and shows a 30.8% penalty compared to Medium. The data indicates that Medium strikes the best balance between performance and quality at this resolution.

For users who prioritize frame rate above all else, 1080p Low at 90 FPS is the only configuration in the entire dataset that approaches high-refresh-rate gaming. However, the 78 FPS at Medium is sufficient for most gamers, and the visual improvements are noticeable in a game like Doom where atmospheric lighting and texture detail contribute significantly to the experience. The minimum FPS of 66 at Medium is still well above the 30 FPS playability threshold, ensuring consistent performance.

At 1440p, the data suggests that only Low settings (58 FPS) provide a reliably smooth experience. Medium settings at 51 FPS are borderline, and the minimum of 43 FPS indicates potential stuttering in intense combat sequences. High (43 FPS) and Ultra (35 FPS) settings at 1440p fall below the 60 FPS ideal and are not recommended for competitive play. The 4K resolution should be avoided entirely, as even Low settings at 31 FPS are marginal, and the Medium preset's minimum of 23 FPS indicates frequent drops below playable levels.

The overall recommendation is clear: 1920x1080 with Medium settings is the best configuration for this hardware combination. This provides the highest frame rates that maintain consistent quality across all settings, with a 78 FPS average that comfortably exceeds playability thresholds. Users with higher refresh rate displays may prefer 1080p Low for the 90 FPS average, but the visual compromise is significant. For the best balance of performance and visual fidelity, the 1080p Medium preset is the definitive choice based on the measured data.