Doom

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

The AMD Ryzen 9 5950X brings a 16-core, 32-thread configuration based on the Zen 3 architecture, with a base clock of 3.40 GHz and a boost clock of 4.90 GHz. This is a Vermeer-generation desktop part on the AMD Socket AM4 platform, built on a 7 nm TSMC process with 8,300 million transistors across a dual-die design measuring 2x 74 mm². Its cache hierarchy includes 64 KB of L1 per core, 512 KB of L2 per core, and a substantial 64 MB of L3 cache, which is important for a fast-paced FPS like Doom that benefits from low-latency data access.

In synthetic CPU benchmarks, the 5950X posts a Cinebench R23 multi-core score of 38,607 and a single-core score of 5,450. Its Geekbench multi-core score is 12,084 with a single-core score of 2,211. The 3DMark 16-thread test yields 10,810, while the max-thread run reaches 11,597. These numbers place the CPU at the 93rd percentile among all processors tested, with an average benchmark score of 49,062. The nearest rival, the Intel Core i5-14600K, scores 49,166, which is a delta of -0.2% — essentially a statistical tie. The i5-14600KF is 0.6% ahead, while the AMD EPYC 4345P trails by 1.1% and the Intel Xeon Gold 5318H trails by 0.7%. For Doom, a game that is not heavily threaded, the 5950X's single-thread performance is the more relevant metric, and its 5,450 Cinebench R23 single-core result ensures that the CPU will not bottleneck frame generation in most scenarios.

The measured FPS data in this game shows that the 5950X is more than sufficient to feed the GPU. At 1080p Low settings, the combo achieves 365.5 FPS, which is well above the refresh rates of most monitors. Even at the most demanding 4K Ultra preset, the frame rate stays at 99.5 FPS, indicating that the CPU's 32 threads and high boost clock are not the limiting factor at any resolution tested. The 105 W TDP and dual-channel DDR4 memory with 51.2 GB/s bandwidth are adequate for this workload, though the game's engine is optimized for lower core counts, meaning the 16-core design is largely headroom rather than a necessity. In short, the CPU provides a strong foundation, but its role diminishes as resolution increases and GPU load becomes dominant.

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

The NVIDIA GeForce RTX 5090 is the dominant component in this pairing, built on the Blackwell 2.0 architecture with a 5 nm TSMC process and 92,200 million transistors on a 750 mm² die. Its base clock is 2017 MHz with a boost clock of 2407 MHz, and memory runs at 1750 MHz with 28 Gbps effective speed. The GPU features 32 GB of GDDR7 memory on a 512-bit bus, delivering 1.79 TB/s of bandwidth — a figure that far exceeds what Doom's 2016 engine requires, making VRAM capacity essentially a non-issue at any resolution or settings level.

The RTX 5090's compute resources are staggering: 21,760 shading units, 680 texture mapping units, 176 render output units, 170 ray tracing cores, and 680 tensor cores. Its pixel rate is 423.6 GPixel/s, texture rate is 1,636.8 GTexel/s, and FP32 throughput is 104.8 TFLOPS. In synthetic benchmarks, the GPU scores 14,411 in 3DMark Steel Nomad DX12, 380,114 in Geekbench OpenCL, and 379,571 in Geekbench Vulkan. Its Passmark G3D score is 39,650, placing it at the 94th percentile among all GPUs with an average benchmark score of 84,306. The nearest rival, the RTX 5090 D, scores 84,241 (0.1% behind), while the RTX 5050 Mobile is 0.2% ahead, and the AMD Radeon PRO W6600 trails by 1.3%. The NVIDIA CMP 40HX is 1.6% ahead in average score.

For Doom, the GPU's role is to push high frame rates, and the data confirms it does so decisively. At 1080p Low, the RTX 5090 helps achieve 365.5 FPS, and even at 4K Ultra, it maintains 99.5 FPS. The 32 GB VRAM is far beyond the game's needs, meaning texture quality and memory bandwidth are never constraints. The 575 W TDP and 950 W suggested PSU reflect the card's power appetite, but the performance payoff is clear. The GPU is the primary driver of frame rates, especially at higher resolutions where the 1.79 TB/s bandwidth and 176 ROPs shine. The gap between Low and Ultra settings at 4K (161.9 vs 99.5 FPS) shows how much headroom exists in the graphics pipeline.

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

The measured FPS data reveals a clear scaling pattern across resolutions. At 1080p Low, the combo delivers 365.5 FPS. Moving to 1440p Low drops this to 297.1 FPS, a reduction of 18.7%, and at 4K Low it falls further to 161.9 FPS, which is 55.7% lower than the 1080p result. This steep decline indicates that the GPU becomes the bottleneck as pixel count increases, while the CPU maintains sufficient headroom.

At High settings, the pattern is similar but with lower absolute numbers: 329.1 FPS at 1080p, 217.8 FPS at 1440p, and 117.9 FPS at 4K. The 4K figure is 64.2% below the 1080p figure, showing that the GPU's workload scales non-linearly with resolution. Medium settings show 343.8 FPS at 1080p, 259.1 FPS at 1440p, and 142.4 FPS at 4K. Ultra settings yield 274.5 FPS at 1080p, 178.7 FPS at 1440p, and 99.5 FPS at 4K.

The limiting component is clearly the GPU at 4K, as the CPU's strong single-thread performance keeps feeding frames well above 100 FPS even in the most demanding preset. At 1080p, the GPU is still the main driver, but the CPU's 3DMark single-thread score of 944 and Passmark single-thread score of 3,470 suggest it could handle even higher frame rates if the GPU were faster. The fact that 1080p Low (365.5 FPS) is only 0.8% higher than 1080p Medium (343.8 FPS) but 33.2% higher than 1080p Ultra (274.5 FPS) indicates that the Ultra preset introduces effects that tax the GPU disproportionately. The data shows a smooth, predictable scaling curve, with no anomalies that would suggest CPU limitations at any resolution.

How This Combo Ranks — use comboRankInGame vs other tested combos

This specific combination of the AMD Ryzen 9 5950X and NVIDIA GeForce RTX 5090 ranks 38th out of 1,681 tested combos in Doom. This places it in the top 2.3% of all configurations, which is an elite standing. The rank reflects the synergy between a high-end CPU and a flagship GPU, though the position is not #1 because Doom is an older title that does not fully utilize the RTX 5090's modern features like ray tracing cores or tensor cores.

The combo's percentile standing is consistent with the individual components' percentiles (CPU at 93rd, GPU at 94th), suggesting balanced performance. However, the rank of 38 out of 1,681 means there are 37 combos that achieve higher average FPS in this game. Those combos likely feature CPUs with even higher single-thread performance or GPUs that are optimized for this specific engine. The delta between this combo and the top-ranked ones is not available in the data, but the rank indicates that the 5950X's 16 cores are not a hindrance, nor is the RTX 5090's massive VRAM a benefit — the game simply does not need more than 8 GB, and the 32 GB is wasted headroom.

Compared to the nearest CPU rivals, the 5950X's average benchmark score is within 1.1% of the EPYC 4345P and 0.7% of the Xeon Gold 5318H, which means those CPUs would likely produce similar results in Doom when paired with the same GPU. The GPU's nearest rivals (RTX 5090 D, RTX 5050 Mobile) have average scores within 0.2%, so swapping to those would not materially change the in-game rank. The 38th position is therefore a function of the GPU's raw fill rate and the CPU's adequate single-thread speed, rather than any exceptional synergy.

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

Examining the measured FPS rows, the best experience depends on the target refresh rate. At 1080p, all presets exceed 274 FPS, so even Ultra (274.5 FPS) is playable on high-refresh displays. However, the jump from Ultra to High at 1080p is 54.6 FPS (from 274.5 to 329.1), a 19.9% improvement, while the visual difference between High and Ultra is often subtle in a fast-paced FPS. For competitive play, High at 1080p offers the best balance of frame rate and visual fidelity.

At 1440p, High (217.8 FPS) is the sweet spot for 144 Hz displays, while Ultra (178.7 FPS) still exceeds 144 Hz but with a 39.1 FPS penalty. Medium (259.1 FPS) and Low (297.1 FPS) are viable for 240 Hz monitors, but the visual downgrade may not be worth the extra frames. At 4K, Ultra (99.5 FPS) is just below 100 FPS, making High (117.9 FPS) the recommended preset for a smooth 100+ FPS experience. Low at 4K (161.9 FPS) is the only preset that comfortably clears 144 Hz, but most users would prefer High for image quality.

The data suggests that High is the most versatile preset across all resolutions, offering at least 117.9 FPS at 4K and 329.1 FPS at 1080p. Medium provides a middle ground, but the gains over High are modest (14.6 FPS at 4K, 14.7 FPS at 1440p, 14.7 FPS at 1080p). Ultra is the most demanding, and its 99.5 FPS at 4K is still playable, but the 18.4 FPS drop from High to Ultra at 4K is hard to justify unless visual fidelity is paramount. For the majority of users, High delivers the best experience per the measured rows.

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

The full FPS matrix is as follows:

1920x1080:

• Low: 365.5 FPS
• Medium: 343.8 FPS
• High: 329.1 FPS
• Ultra: 274.5 FPS

At 1080p, the spread from Low to Ultra is 91.0 FPS, with Low being 33.2% faster than Ultra. The difference between Low and Medium is 21.7 FPS (6.3%), between Medium and High is 14.7 FPS (4.3%), and between High and Ultra is 54.6 FPS (16.6%). The largest drop occurs when moving from High to Ultra, indicating that Ultra's additional effects (likely shadows and post-processing) are disproportionately expensive at this resolution.

2560x1440:

• Low: 297.1 FPS
• Medium: 259.1 FPS
• High: 217.8 FPS
• Ultra: 178.7 FPS

At 1440p, the spread widens to 118.4 FPS. Low is 66.3% faster than Ultra. The step from Low to Medium is 38.0 FPS (12.8%), Medium to High is 41.3 FPS (15.9%), and High to Ultra is 39.1 FPS (17.9%). The gaps are more uniform here, suggesting that each preset level adds a similar load on the GPU. The 1440p High result of 217.8 FPS is 33.8% lower than the 1080p High result, showing the resolution's impact.

3840x2160:

• Low: 161.9 FPS
• Medium: 142.4 FPS
• High: 117.9 FPS
• Ultra: 99.5 FPS

At 4K, the spread is 62.4 FPS. Low is 62.7% faster than Ultra. The step from Low to Medium is 19.5 FPS (12.0%), Medium to High is 24.5 FPS (17.2%), and High to Ultra is 18.4 FPS (15.6%). The 4K Ultra result of 99.5 FPS is the only sub-100 FPS figure in the entire dataset, and it is 63.8% lower than the 1080p Ultra result. This breakdown confirms that the RTX 5090 is the limiting factor at 4K, with the CPU providing sufficient headroom to avoid any frame drops below the measured averages. The data shows a consistent pattern: each resolution increase reduces FPS by roughly 30-35%, and each preset step from Low to Ultra reduces FPS by approximately 15-20% at any given resolution.