Doom

The data for Doom with the AMD Ryzen 9 8945HX and NVIDIA GeForce RTX 5080 Mobile shows a pairing that is heavily skewed toward high refresh rates, with the GPU acting as the primary scaling factor across resolutions. This combination is clearly built for fast-paced FPS play, delivering playable frame rates even at 4K, but it excels when the resolution is lowered to unlock the full potential of the display.

Resolution Scaling

The measured FPS data reveals a predictable but steep drop as resolution increases, which is typical for a GPU-bound title like Doom. At the High settings preset, the average frame rate falls from 227 FPS at 1920x1080 to 147 FPS at 2560x1440, a reduction of 80 FPS. Pushing further to 3840x2160, the average drops to 80 FPS, which is a 147 FPS difference from the 1080p result. This scaling pattern is consistent with the RTX 5080 Mobile hitting its pixel throughput limits at higher resolutions; the CPU has ample headroom even at 4K, as the frame rate is still well above the 60 FPS threshold.

The scaling from 2560x1440 to 3840x2160 at High settings shows a 67 FPS drop, which is a larger absolute decline than the 80 FPS drop seen when moving from 1080p to 1440p. This suggests that the GPU’s shading and ROP capabilities are the limiting factor at 4K, rather than any CPU bottleneck. The data indicates that the Ryzen 9 8945HX, with its 16 cores and 32 threads, is not the constraint here; even at 1080p Low settings, where the CPU would be most likely to limit performance, the system still achieves 309 FPS, indicating significant headroom in the processor.

At the Ultra preset, the trend is similar but with lower absolute numbers. The average FPS at 1080p is 186, dropping to 120 at 1440p and further to 65 at 4K. The 4K Ultra result is the only configuration that dips below the 80 FPS mark seen at High settings, showing that the Ultra preset demands a significant amount of GPU resources. The scaling factor from 1440p to 4K on Ultra is a 55 FPS drop, which is proportionally similar to the High preset’s drop, confirming that the GPU’s workload is scaling linearly with pixel count across different quality levels.

How This Combo Ranks

In the grand scheme of tested hardware combinations for Doom, this specific pairing of the Ryzen 9 8945HX and RTX 5080 Mobile holds a strong position. The combo rank is 1006 out of 3712 tested combinations, placing it in the top 27% of all systems. This is a solid result, but it is not at the absolute pinnacle of performance, which is expected given that there are more powerful desktop GPUs and newer mobile parts that could rank higher.

The CPU itself is a top-tier mobile processor. Its average benchmark score of 76212 places it in the 95th percentile of all CPUs, with its nearest rival, the Intel Core Ultra 9 285HX, scoring 76155, a mere 0.1% difference. This indicates that the Ryzen 9 8945HX is essentially tied with the best mobile chips available, ensuring that it won't hold back the GPU in most scenarios. The GPU, on the other hand, ranks in the 81st percentile of all GPUs with an average score of 38349. Its nearest rival is the NVIDIA GeForce MX570, which scores 38299, a 0.1% difference, and the RTX 4080 Mobile scores 38135, a 0.6% difference. This shows that the RTX 5080 Mobile is a high-end part, but it is not the absolute fastest mobile GPU available, which is why the combo doesn't rank higher.

The data suggests that the overall ranking is more constrained by the GPU than the CPU. While the CPU is in the 95th percentile, the GPU is in the 81st percentile, meaning the GPU is relatively further from the top of its class. This is a common pairing for high-end gaming laptops, where the CPU often has more headroom than the GPU for gaming workloads.

Settings Recommendations

Based on the measured FPS data, the best experience for a high-refresh-rate 1080p or 1440p display is the High settings preset. At 1080p, High delivers 227 FPS, which is more than enough for any 144Hz or 240Hz panel. At 1440p, High still provides 147 FPS, which is ideal for a 144Hz monitor. This preset offers a great balance between visual quality and performance, with the average frame rates being significantly higher than the Medium preset.

For 4K gaming, the Medium preset is the most sensible choice. It provides an average of 94 FPS with a minimum of 80 FPS, which is a smooth experience on a 60Hz or even 120Hz 4K display. The High preset at 4K also works at 80 FPS, but the Medium preset offers a more comfortable margin above 60 FPS. The Ultra preset at 4K is only playable at 65 FPS, which is close to the 60 FPS floor and may result in occasional dips, making it less ideal for competitive play.

Using the Low preset is only recommended for maximum frame rates on esports titles, but for Doom, it is not necessary. The Low preset at 1080p yields 309 FPS, which is an extreme result, but the visual downgrade is significant. For most players, the High preset at 1080p or 1440p, or the Medium preset at 4K, will provide the best overall experience, balancing visual fidelity with high and stable frame rates.

Measured FPS Breakdown

The complete measured FPS table for this combo shows a clear hierarchy of performance across settings and resolutions.

At 1920x1080, the results are as follows:

• Low: 309 FPS average.
• Medium: 269 FPS average, with a minimum of 229 FPS and a maximum of 310 FPS.
• High: 227 FPS average.
• Ultra: 186 FPS average.

At 2560x1440, the performance scales down:

• Low: 200 FPS average.
• Medium: 174 FPS average, with a minimum of 148 FPS and a maximum of 200 FPS.
• High: 147 FPS average.
• Ultra: 120 FPS average.

At 3840x2160, the frame rates are the most demanding:

• Low: 108 FPS average.
• Medium: 94 FPS average, with a minimum of 80 FPS and a maximum of 109 FPS.
• High: 80 FPS average.
• Ultra: 65 FPS average.

The data shows that the gap between Low and Ultra settings is substantial. At 1080p, the difference is 123 FPS (309 vs 186), and at 4K, the difference is 43 FPS (108 vs 65). This indicates that the Ultra preset has a significant performance cost, which is typical for a game like Doom with its intense particle effects and lighting.

GPU Role

The NVIDIA GeForce RTX 5080 Mobile plays the central role in determining frame rates in this title. With 16 GB of GDDR7 memory on a 256-bit bus, the card provides a memory bandwidth of 896.0 GB/s, which is more than sufficient for Doom at any resolution. The data shows that the GPU is the limiting factor at 4K, as the frame rates drop significantly from 1440p, indicating that the card is hitting its pixel fill rate limits.

The GPU’s boost clock of 1500 MHz and base clock of 975 MHz, combined with 7680 shading units, allow for high raw compute performance. The FP32 throughput is 23.04 TFLOPS, which is a strong number for a mobile part. The card also features 60 RT cores and 240 tensor cores, although these are not heavily utilized in Doom, as it is a rasterization-focused title. The 96 ROPs are likely the key spec for 4K performance, as the pixel rate of 144.0 GPixel/s directly impacts how fast the card can fill the screen.

The GPU’s average benchmark score of 38349 puts it in the 81st percentile, showing it is a high-performance part, but not the absolute top. Its data indicates it is roughly equivalent to the RTX 4080 Mobile, with only a 0.6% difference in average score, making it a solid upgrade for mobile gaming. The 16 GB of VRAM is a future-proofing feature, ensuring that the card won't run out of memory in this game or others at high settings.

FAQ

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

A: The highest measured average frame rate is 309 FPS at 1920x1080 resolution with the Low settings preset. This indicates the CPU and GPU have significant headroom at lower resolutions.

*Q: Is this combination capable of smooth 4K gaming in Doom?*

A: Yes, it is. At 3840x2160 with Medium settings, it achieves an average of 94 FPS with a minimum of 80 FPS. The High preset also delivers a playable 80 FPS average.

Q: How does the CPU compare to its nearest rival, the Intel Core Ultra 9 285HX?

A: The Ryzen 9 8945HX has an average benchmark score of 76212, which is only 0.1% higher than the Intel Core Ultra 9 285HX’s score of 76155. In practical terms, they are tied in performance.

Q: What is the performance difference between the Low and Ultra settings at 1440p?

A: At 2560x1440, the Low preset yields 200 FPS, while the Ultra preset yields 120 FPS. This is a difference of 80 FPS, making Ultra a significant performance hit but still highly playable.

*Q: Does the GPU have enough VRAM for Doom?*

A: Yes, the RTX 5080 Mobile has 16 GB of GDDR7 memory, which is more than sufficient for Doom at any resolution and settings preset. The data shows no signs of memory-related performance drops.

Q: What is the combo’s overall ranking among all tested systems for this game?

A: The combination of the Ryzen 9 8945HX and RTX 5080 Mobile ranks 1006 out of 3712 tested combos, placing it in the top 27% of all systems tested for Doom.