Doom

The Intel Core Ultra 5 235HX and NVIDIA GeForce RTX 5080 Mobile combination delivers a remarkably robust experience in Doom, placing in the 27th percentile of all tested hardware combos (rank 1006 out of 3712). The data reveals a system that is heavily GPU-bound at higher resolutions but capable of pushing extremely high frame rates at 1080p, where the CPU's strong single-core performance becomes more relevant. Benchmark results indicate this pairing is exceptionally well-suited for high-refresh-rate gaming, though the most demanding settings at 4K will require some compromises to maintain smooth gameplay.

Resolution Scaling

The measured frame rates show a classic resolution scaling curve, with the most significant performance drop occurring between 1440p and 4K. At High settings, the average FPS falls from 227 at 1080p to 147 at 1440p, a 35% reduction, and then further to 80 at 4K, representing a 46% drop from the 1440p figure. This steep decline from 1440p to 4K strongly suggests the GPU is the primary limiting factor, as the pixel count roughly doubles while the frame rate does not scale linearly.

At Low settings, the scaling pattern shifts. The average FPS at 1080p is 309, which drops to 200 at 1440p (a 35% reduction) and then to 108 at 4K (a 46% reduction from 1440p). The relative consistency of these percentage drops across different settings indicates that resolution scaling is largely independent of the graphics preset; the GPU's workload scales predictably with pixel count. However, the absolute headroom at 1080p is substantial, suggesting that at this resolution, the GPU is not fully saturated, and the CPU's capabilities become more apparent.

The data shows a clear inflection point between 1440p and 4K. At 1440p Medium, the system still achieves 174 FPS average, which is well within high-refresh-rate territory. Moving to 4K Medium, the average drops to 94 FPS, a 46% reduction, highlighting the massive increase in pixel throughput required at 4K. The RTX 5080 Mobile's 16 GB of GDDR7 memory and 896.0 GB/s bandwidth appear sufficient for these workloads, as the frame rate drops are consistent with compute-bound, rather than memory-bound, limitations.

Given the GPU's benchmark percentile of 81, it sits well above average, but the data suggests that 4K Ultra is a step too far. The jump from 80 FPS at 4K High to 65 FPS at 4K Ultra is a 19% performance penalty for the highest quality settings. This indicates that the GPU's 23.04 TFLOPS of FP32 compute is the limiting factor at 4K, and users prioritizing frame rate over absolute visual fidelity should consider High settings at this resolution.

Settings Recommendations

For the best balance of visual quality and performance, the data points to High settings as the optimal choice across all tested resolutions. At 1080p, High settings deliver 227 FPS average, which is only 27% lower than Low (309 FPS) but provides a substantial visual upgrade over Medium (269 FPS). The gap between High and Ultra at 1080p is larger, with Ultra dropping to 186 FPS, a 18% reduction from High, suggesting diminishing returns from the Ultra preset.

At 1440p, High settings achieve 147 FPS, which is a solid result for high-refresh-rate monitors. Medium settings offer a 18% boost (174 FPS), but the visual difference between Medium and High is often more noticeable than between High and Ultra. For users with 144Hz displays, High settings provide enough headroom to maintain a consistent frame rate, as the minimum FPS observed at 1440p Medium is 148, indicating that High should stay comfortably above the 144 FPS threshold.

The 4K resolution presents a more nuanced decision. At 4K High, the system averages 80 FPS, which is playable but not ideal for competitive play. Medium settings at 4K provide 94 FPS, a 17.5% improvement, but the minimum FPS of 80 (observed at Medium) suggests that even this setting can experience dips. Low settings at 4K push the average to 108 FPS, which is a significant jump, but the visual compromise is substantial. The data suggests that 4K High is the sweet spot for visual fidelity, as the 65 FPS average at Ultra is likely too low for smooth gameplay, while the jump from Medium to High is more substantial (from 94 to 80 FPS, a 15% penalty) than from High to Ultra (from 80 to 65 FPS, a 19% penalty).

CPU Role

The Intel Core Ultra 5 235HX is a 14-core, 14-thread processor based on the Arrow Lake architecture, with a base clock of 2.90 GHz and a boost clock of 5.10 GHz. Its benchmark results show strong single-core performance, with a Cinebench R23 single-core score of 4903, which is critical for Doom's game logic and physics calculations. The CPU's PassMark single-thread score of 4683 and its 91st percentile ranking among all CPUs indicate that it is more than capable of feeding the GPU in most scenarios.

The data shows that at 1080p Low settings, the system achieves 309 FPS, which is exceptionally high. This frame rate is likely near the CPU's practical limit for this game, as the GPU's workload at 1080p Low is relatively light. The fact that the frame rate increases from 227 FPS at 1080p High to 309 FPS at 1080p Low (a 36% increase) suggests that the GPU is still the primary bottleneck even at 1080p, but the CPU's headroom becomes evident when comparing the scaling between resolutions.

The CPU's L3 cache is 24 MB shared, and its memory bandwidth is 102.4 GB/s with DDR5 support. These specifications, combined with its 5.10 GHz boost clock, allow it to handle the game's AI and entity management without stuttering. At 4K, the CPU's role diminishes, as the frame rates drop to 65-108 FPS depending on settings, which is well within the CPU's capability to maintain. The benchmark data shows that the CPU's nearest rivals, such as the AMD Ryzen 9 5950X (avg score 51947, deltaPct 0.2%) and Intel Core i9-13900F (avg score 51730, deltaPct 0.7%), have comparable average benchmark scores, indicating that the Ultra 5 235HX is not a limiting factor in this game.

FAQ

Q: What is the best resolution for this CPU/GPU combo in Doom?

A: The data shows that 1440p High settings provide an excellent balance, delivering 147 FPS average. At 4K, the system can manage 80 FPS at High settings, but 1440p is where the hardware truly shines, offering high frame rates without the steep performance penalty of 4K.

Q: How does the RTX 5080 Mobile compare to its nearest rivals?

A: The GPU's average benchmark score is 38349, which is 0.6% higher than the NVIDIA GeForce RTX 4080 Mobile (avg score 38135) and 0.1% higher than the NVIDIA GeForce MX570 (avg score 38299). This places it in the 81st percentile of all GPUs, indicating it is a high-performing part.

Q: Is the CPU a bottleneck at 1080p?

A: At 1080p Low, the system achieves 309 FPS, which is very high. The gap between Low and High settings at 1080p (309 vs 227 FPS) suggests the GPU is still the main limiter, but the CPU's 14 cores and 5.10 GHz boost clock ensure it can keep up with the game's demands at these frame rates.

Q: What is the difference between Medium and High settings at 4K?

A: At 4K, Medium settings average 94 FPS with a minimum of 80 FPS, while High settings average 80 FPS. The 15% performance drop from Medium to High is notable, but High provides better visual quality. The choice depends on whether the user prioritizes frame rate stability or graphical fidelity.

Q: How does the CPU's performance compare to its rivals?

A: The CPU's average benchmark score is 52073, which is 0.2% higher than the AMD Ryzen 9 5950X (51947) and 0.1% lower than the AMD EPYC 8124P (52121). This places it in the 91st percentile of all CPUs, showing it is a strong performer for gaming.

Q: Does the system maintain consistent frame rates?

A: The data shows minimum FPS values only for Medium settings. At 1080p Medium, the minimum is 229 FPS, and at 1440p Medium, it is 148 FPS. These minimums are close to the averages, indicating good frame pacing, though 4K Medium shows a minimum of 80 FPS, which could be noticeable during intense scenes.

GPU Role

The NVIDIA GeForce RTX 5080 Mobile is a Blackwell 2.0 architecture GPU built on a 5 nm process, with 7680 shading units and 60 RT cores. Its boost clock is 1500 MHz, and it features 16 GB of GDDR7 memory on a 256-bit bus, providing 896.0 GB/s of bandwidth. The GPU's FP32 performance is rated at 23.04 TFLOPS, and its texture rate is 360.0 GTexel/s. These specifications position it as a high-end mobile part, and the benchmark data confirms this, with a PassMark G3D score of 27711 and a 3DMark Steel Nomad DX12 score of 4952.

In Doom, the GPU's role is dominant at resolutions above 1080p. The data shows that at 4K, the frame rate scales almost linearly with the GPU workload, dropping from 108 FPS at Low to 65 FPS at Ultra. This 40% reduction in performance from Low to Ultra at 4K demonstrates that the GPU is the primary bottleneck at this resolution. The GPU's 16 GB VRAM is not a limiting factor, as the frame rate drops are consistent with compute-bound workloads rather than memory capacity issues.

The GPU's nearest rivals include the RTX 4080 Mobile, which has an average benchmark score 0.6% lower, and the MX570, which is 0.1% lower. The fact that the RTX 5080 Mobile's performance is so close to these parts in synthetic benchmarks, yet delivers such high frame rates in Doom, suggests that the game is well-optimized for this architecture. The GPU's RT cores and Tensor cores (240 each) are not heavily utilized in this game, as Doom does not feature ray tracing, but the raw rasterization performance is clearly sufficient for high-refresh-rate gaming.

Measured FPS Breakdown

At 1920x1080, the system delivers exceptional performance across all settings. Low settings achieve 309 FPS average, Medium settings 269 FPS (minimum 229, maximum 310), High settings 227 FPS, and Ultra settings 186 FPS. The scaling from Low to Ultra shows a 40% performance penalty for maximum quality, which is typical for this game. The minimum FPS at Medium (229) indicates that even in demanding scenes, the frame rate remains well above the refresh rate of most monitors.

Moving to 2560x1440, the performance remains strong but shows the expected drop. Low settings average 200 FPS, Medium settings 174 FPS (minimum 148, maximum 200), High settings 147 FPS, and Ultra settings 120 FPS. The drop from 1080p to 1440p is consistent across settings, with an approximate 35% reduction in average FPS. The minimum FPS at 1440p Medium (148) suggests that High settings would likely maintain a minimum close to 120 FPS, which is still suitable for high-refresh-rate gaming.

At 3840x2160, the GPU is clearly the limiting factor. Low settings average 108 FPS, Medium settings 94 FPS (minimum 80, maximum 109), High settings 80 FPS, and Ultra settings 65 FPS. The performance drop from 1440p to 4K is significant, with a 46% reduction at Low settings (200 to 108 FPS) and a 45% reduction at High settings (147 to 80 FPS). The minimum FPS at 4K Medium (80) highlights that even at Medium settings, the system can experience dips below 90 FPS, which may be noticeable to some users. The Ultra preset at 4K, with its 65 FPS average, is the only configuration that falls below the 70 FPS threshold, making it less suitable for smooth gameplay.