Doom

The AMD Ryzen 9 8945HX paired with the NVIDIA GeForce RTX 5050 Mobile produces a distinct performance profile in Doom, where the data reveals a clear shift in system bottleneck as resolution increases. At 1920x1080, the combination delivers high frame rates that suggest the CPU is doing substantial work, while at 3840x2160, the GPU becomes the primary limiting factor, with average frame rates dropping below the 60 FPS threshold on most settings.

Resolution Scaling

The measured frame rates show a consistent and predictable decline as resolution scales from 1920x1080 to 3840x2160, but the rate of decline reveals important information about where the performance ceiling lies. At Low settings, the average FPS drops from 167 at 1080p to 108 at 1440p, a reduction of 59 FPS, and then further to 59 at 4K, another 49 FPS drop. This pattern indicates that the RTX 5050 Mobile is being progressively more stressed as pixel count increases, but the CPU is still able to feed the GPU adequately at 1080p, as evidenced by the very high frame rates.

Moving from 1440p to 4K shows a different scaling factor. At High settings, the drop from 2560x1440 to 3840x2160 is from 80 FPS to 43 FPS, a 46% reduction. This steep decline suggests that the GPU's rendering capabilities are being saturated at 4K, and the 8 GB VRAM buffer combined with the 128-bit memory bus is struggling to maintain throughput. The fact that the 4K Medium setting produces a minimum FPS of 43 and a maximum of 59, with an average of 51, shows that even the mid-range preset cannot maintain a consistent experience at this resolution.

The scaling behavior at 1080p is particularly telling. The difference between Low (167 FPS) and Ultra (101 FPS) is 66 FPS, which is a substantial gap but not as large as the resolution-based drops. This suggests that at 1080p, the CPU's 16 cores and 32 threads are capable of driving the GPU to high utilization, and the bottleneck shifts to the GPU's shading units and texture mapping units as settings increase. The data shows that this combo is best suited for 1080p and 1440p gaming, where the average FPS remains above 65 even at Ultra settings, while 4K gaming requires significant settings compromises.

FAQ

Q: What is the best resolution for this combo to maintain 60 FPS or higher?

A: The data shows that at 2560x1440, all four settings presets achieve average frame rates above 60 FPS, with Low at 108, Medium at 94, High at 80, and Ultra at 65. At 3840x2160, only the Low preset reaches an average of 59 FPS, which is just below 60, so 1440p is the practical ceiling for consistently smooth performance.

Q: How does the Ultra preset compare to High at each resolution?

A: At 1920x1080, Ultra averages 101 FPS compared to High's 123 FPS, a 22 FPS difference. At 2560x1440, Ultra averages 65 FPS versus High's 80 FPS, a 15 FPS gap. At 3840x2160, Ultra averages 35 FPS versus High's 43 FPS, an 8 FPS difference, showing that the absolute performance gap narrows as resolution increases while the relative penalty becomes more severe.

Q: Does the RTX 5050 Mobile have enough VRAM for Doom at 4K?

A: The GPU has 8 GB of GDDR7 memory on a 128-bit bus with 384.0 GB/s bandwidth. The measured data shows that at 3840x2160, the Ultra preset only achieves 35 FPS average, and even Medium drops to 51 FPS, indicating that the memory subsystem is a limiting factor at this resolution, though the exact VRAM usage is not provided in the data.

Q: Is the Ryzen 9 8945HX holding back the RTX 5050 Mobile at 1080p?

A: The CPU's boost clock of 5.40 GHz and 16 cores give it strong single-threaded performance, and at 1920x1080 Low, the combo reaches 167 FPS. This suggests the CPU is not a limiting factor at 1080p; the GPU's 2560 shading units are the primary constraint as settings increase.

Q: What is the FPS range for Medium settings across resolutions?

A: The Medium preset shows average FPS of 146 at 1080p, 94 at 1440p, and 51 at 4K. The minimum and maximum FPS recorded are 124 and 168 at 1080p, and 80 and 108 at 1440p, respectively, while the 4K Medium setting has a range of 43 to 59 FPS.

Q: How does this combo's overall performance rank against other tested combinations?

A: The combo ranks 2974 out of 3712 tested combinations for Doom, placing it in the lower third of all tested systems, despite the individual components having strong benchmark scores relative to their peers.

How This Combo Ranks

The combo's rank of 2974 out of 3712 tested combinations places it in the 20th percentile of all systems tested in Doom. This is a notable result because the individual components benchmark much higher in synthetic tests: the Ryzen 9 8945HX sits in the 95th percentile versus all CPUs, and the RTX 5050 Mobile sits in the 83rd percentile versus all GPUs. The divergence between the component-level percentiles and the in-game rank indicates that Doom's specific rendering workload does not scale as favorably with this hardware combination as it does with others.

The CPU's nearest rivals, such as the Intel Core Ultra 9 285HX, which benchmarks within 0.1% of the Ryzen 9 8945HX, and the AMD Ryzen 9 9950X3D at 0.6% higher, suggest that the processor is not the limiting factor in the rank. Similarly, the GPU's nearest rivals include the NVIDIA GeForce RTX 4070 SUPER at 0.1% higher average score and the RTX 4090 Mobile at 0.9% lower, indicating that the RTX 5050 Mobile's raw compute performance is competitive with older high-end parts.

The low in-game rank relative to component benchmarks suggests that Doom's engine, which was released in 2016, may not fully utilize the newer architecture features of the Blackwell 2.0 GPU or the Zen 4 CPU. The measured FPS data shows that this combo can produce playable frame rates at 1080p and 1440p, but the combination of only 32 ROPs and a 128-bit memory bus limits the fill rate and memory throughput that Doom's rendering pipeline demands, particularly at higher resolutions.

Measured FPS Breakdown

At 1920x1080, the RTX 5050 Mobile and Ryzen 9 8945HX combination delivers its strongest results. The Low preset produces an average of 167 FPS, which is the highest measured value across all resolutions and settings. Medium settings average 146 FPS with a minimum of 124 and maximum of 168, showing that the hardware can sustain high frame rates even with moderate graphical demands. High settings reduce the average to 123 FPS, while Ultra drops to 101 FPS. The spread across settings at 1080p is 66 FPS, which demonstrates that the GPU's 2560 shading units and 80 TMUs are the primary differentiators between presets.

At 2560x1440, the same pattern holds but with lower absolute values. Low settings average 108 FPS, Medium 94 FPS with a range of 80 to 108, High 80 FPS, and Ultra 65 FPS. The difference between Low and Ultra at this resolution is 43 FPS, which is a smaller absolute gap than at 1080p but a similar relative reduction of approximately 40%. The 1440p results show that the combo can handle this resolution comfortably, with even the most demanding preset staying above the 60 FPS threshold.

At 3840x2160, the GPU becomes the clear bottleneck. Low settings average 59 FPS, which is just below the 60 FPS target. Medium settings average 51 FPS with a range of 43 to 59, meaning the frame rate drops below 45 FPS at times. High settings average 43 FPS, and Ultra drops to 35 FPS. The scaling from 1440p to 4K shows a 46% reduction at High settings (from 80 to 43 FPS) and a 46% reduction at Ultra (from 65 to 35 FPS), indicating that the GPU's fill rate and memory bandwidth are being saturated at 4K.

GPU Role

The NVIDIA GeForce RTX 5050 Mobile features 8 GB of GDDR7 memory on a 128-bit bus, providing 384.0 GB/s of bandwidth. The GPU's base clock is 1020 MHz with a boost clock of 1500 MHz, and it has 2560 shading units, 80 TMUs, and 32 ROPs. The pixel rate is 48.00 GPixel/s, and the texture rate is 120.0 GTexel/s, with FP32 performance of 7.680 TFLOPS. These specifications, combined with the measured FPS data, show that the GPU is well-suited for 1080p and 1440p gaming but struggles at 4K.

The 32 ROPs are a significant constraint for Doom's rendering pipeline, which relies heavily on fill rate for its fast-paced action scenes. At 4K, the pixel rate of 48.00 GPixel/s translates to a theoretical maximum of 48 million pixels per second, but the actual workload of 8.3 million pixels per frame at 3840x2160 means the GPU can only achieve approximately 35-59 FPS depending on settings. The memory bandwidth of 384.0 GB/s is also a limiting factor, as Doom's texture-heavy environments require high throughput that the 128-bit bus struggles to provide at 4K.

The GPU's benchmark scores place it in the 83rd percentile versus all GPUs, with an average score of 43268. Its nearest rivals, the Quadro M6000 24 GB, Quadro M6000, and GeForce RTX 4070 SUPER, all have average scores within 0.1% of the RTX 5050 Mobile, showing that the GPU's raw compute performance is competitive with older high-end workstation cards. However, the 8 GB VRAM and 128-bit bus limit its effectiveness in memory-intensive scenarios, which is reflected in the 4K FPS results.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread processor based on the Zen 4 architecture with a base clock of 2.50 GHz and a boost clock of 5.40 GHz. It has 64 MB of L3 cache and supports DDR5 memory on a dual-channel bus with 83.2 GB/s bandwidth. The CPU's benchmark scores are strong, with a Cinebench R23 multi-core score of 42713 and a single-core score of 6030. It sits in the 95th percentile versus all CPUs, with an average benchmark score of 76212.

In Doom, the CPU's role is primarily to feed the GPU with draw calls and game logic. At 1080p with Low settings, the combo achieves 167 FPS, which suggests the CPU is not the bottleneck at this resolution. The 5.40 GHz boost clock provides strong single-threaded performance, which is important for Doom's engine that relies heavily on a few main threads. The 16 cores and 32 threads are more than sufficient for this game, and the data indicates that the CPU has headroom to drive higher frame rates if the GPU could keep up.

The CPU's nearest rival, the Intel Core Ultra 9 285HX, has an average score of 76155, which is 0.1% lower than the Ryzen 9 8945HX. The AMD Ryzen 9 9950X3D scores 0.6% higher, showing that the 8945HX is competitive with the best mobile processors available. The CPU's 64 MB L3 cache and dual-channel DDR5 memory support provide ample bandwidth for game data, but the measured FPS data shows that the CPU is not the limiting factor at any resolution tested, as the GPU's performance degrades much more rapidly with increasing resolution.

Settings Recommendations

The measured data shows that the optimal settings depend heavily on the target resolution. At 1920x1080, the High preset provides an excellent balance with 123 FPS average, which is well above the 60 FPS threshold and close to the 144 Hz refresh rate that many gaming laptops support. The Ultra preset at 101 FPS is also viable, and the visual improvements may be worth the 22 FPS reduction for players with higher refresh rate displays. The Medium preset at 146 FPS is the best choice for competitive play where maximum frame rates are prioritized.

At 2560x1440, the High preset at 80 FPS is the recommended starting point, as it provides a smooth experience while maintaining visual quality. The Ultra preset at 65 FPS is still playable, but the 15 FPS reduction from High suggests that the visual differences may not justify the performance cost. Players seeking higher frame rates can use the Medium preset at 94 FPS, which provides a significant boost over High while still looking respectable. The Low preset at 108 FPS is available for those who prioritize frame rate above all else.

At 3840x2160, the data shows that only the Low preset comes close to 60 FPS with an average of 59 FPS, but this is still marginally below the target. The Medium preset at 51 FPS is the highest quality option that maintains playable frame rates, though the minimum FPS of 43 indicates occasional dips that could be noticeable. The High preset at 43 FPS and Ultra at 35 FPS are not recommended for smooth gameplay. For 4K gaming, the Low or Medium presets are the only viable options, and players should be prepared for frame rates in the 43-59 FPS range.