Doom

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

The AMD Ryzen 5 9600X is a 6-core, 12-thread processor built on the Zen 5 architecture (Granite Ridge) using a 4 nm process from TSMC. It operates with a base clock of 3.90 GHz and a boost clock of 5.40 GHz, with a 65 W TDP. The CPU features 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 32 MB of shared L3 cache. Memory support includes DDR5 with dual-channel configuration and 89.6 GB/s bandwidth. The processor sits in the 81st percentile of all CPUs based on average benchmark scores, with an average benchmark score of 29,713.

In Doom, this CPU is more than sufficient to feed the GPU at all tested resolutions. The game's engine is well-known for scaling across threads, and the 12 threads here provide ample parallel work. The single-thread performance is particularly strong — the 3DMark single-thread score of 1,253 and Cinebench R23 single-core score of 2,183.5 indicate excellent per-core efficiency, which matters for game logic and draw call processing. Multi-threaded scores are also robust: Cinebench R23 multicore reaches 17,528.5, and Geekbench multicore hits 14,438.

The data shows that even at 1080p with Low settings, where the CPU is most likely to become a bottleneck, the average FPS reaches 479. This suggests the Ryzen 5 9600X is not limiting performance in this title. The 3DMark 16-thread score of 7,585 and max-thread score of 7,590 are nearly identical, indicating the CPU scales well with available threads. Compared to its nearest rivals, the Ryzen 5 9600X performs within 0.2% of the AMD Ryzen 7 PRO 5755GE (which scores 29,656), and is 0.5% behind the AMD Ryzen 7 7840H (29,868). The 0.6% gap to the AMD Ryzen 7 5800XT (29,879) and 0.8% gap to the AMD Ryzen 7 8845HS (29,955) are negligible in real-world gaming.

For Doom specifically, the 6-core configuration with high boost clocks delivers consistent frame pacing. The PassMark physics score of 2,012 and single-thread score of 4,570 reinforce that this CPU handles the game's physics and AI workloads effectively. At 4K Ultra, the average FPS of 102 demonstrates that the CPU can keep up even when the GPU is heavily loaded. The benchmark results indicate that the Ryzen 5 9600X provides a solid foundation for this combo, with no measurable CPU-induced frame drops in the measured data.

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

The NVIDIA GeForce RTX 5090 D is a flagship Blackwell 2.0 architecture GPU (chip GB202) built on a 5 nm process. It features 32 GB of GDDR7 memory on a 512-bit bus, delivering 1.79 TB/s of bandwidth. The base clock is 2017 MHz with a boost clock of 2407 MHz, and memory runs at 1750 MHz (28 Gbps effective). The GPU packs 21,760 shading units, 680 TMUs, 176 ROPs, 170 RT cores, and 680 tensor cores. Computational throughput reaches 104.8 TFLOPS for both FP32 and FP16. The card has a 575 W TDP and requires a 950 W suggested PSU.

This GPU sits in the 92nd percentile of all GPUs, with an average benchmark score of 77,712. In Doom, the RTX 5090 D is the dominant component in this pairing. The GPU's massive memory bandwidth and 32 GB VRAM ensure that texture streaming and high-resolution assets are never constrained. The measured FPS at 4K Ultra (102 avg) versus 4K Low (170 avg) shows a 68 FPS spread, which is entirely GPU-driven as settings scale.

The GPU's nearest rivals include the AMD Radeon RX 6650M XT (avg score 76,904, 1.1% ahead), AMD Radeon RX 6850M XT (78,940, 1.6% behind), NVIDIA Tesla P100 PCIe 12 GB (79,396, 2.1% behind), and NVIDIA Tesla P100 PCIe 16 GB (79,605, 2.4% behind). The RTX 5090 D's performance in Doom aligns with its strong compute capabilities — the PassMark G3D score of 44,065 and Geekbench Vulkan score of 376,915 indicate exceptional raw throughput.

At 1080p, the GPU's power is somewhat underutilized due to CPU limitations, but the frame rates remain extremely high. The 4K results show the GPU scaling properly with resolution, with the 4K Ultra average of 102 FPS being a playable and smooth experience. The 1.79 TB/s bandwidth is particularly beneficial for Doom's fast-paced texture streaming, ensuring minimal pop-in and consistent frame times. The GPU's 176 ROPs handle the fill-rate demands of Doom's particle effects and lighting without issue.

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

The measured data reveals a clear pattern of GPU-bound scaling as resolution increases. At 1080p High, the combo achieves 357 FPS average. Moving to 1440p High drops this to 231 FPS (a 35% reduction), and at 4K High it falls to 125 FPS (a further 46% reduction from 1440p). This steep drop-off with resolution indicates that the GPU is the primary limiting factor at higher resolutions, while the CPU has ample headroom.

The Low settings tell a similar story: 1080p Low averages 479 FPS, 1440p Low drops to 314 FPS, and 4K Low falls to 170 FPS. The 1080p to 1440p drop of 165 FPS (34%) is nearly proportional to the pixel count increase, confirming GPU-bound behavior. At 4K Low, the 170 FPS average still shows the GPU handling the resolution increase without CPU interference.

Medium settings show the smooth transition: 1080p Medium averages 422 FPS (min 359, max 486), 1440p Medium averages 273 FPS (min 232, max 314), and 4K Medium averages 148 FPS (min 126, max 170). The min-to-max ranges at each resolution are consistent, suggesting stable frame pacing without CPU bottlenecks. The Ultra preset follows the same pattern: 1080p Ultra at 292 FPS, 1440p Ultra at 189 FPS, and 4K Ultra at 102 FPS.

The scaling factor from 1080p to 4K is roughly 3.5x at High settings (357 to 125 FPS), which is close to the 4x pixel count increase — the small deviation indicates the CPU contributes marginally at 4K. The data strongly suggests that the Ryzen 5 9600X is not the bottleneck in this combo; instead, the RTX 5090 D's performance scales predictably with resolution, as expected from a high-end GPU paired with a capable mid-range CPU. The 1440p to 4K drop at Ultra (189 to 102 FPS, a 46% reduction) mirrors the pixel count increase, reinforcing the GPU-bound conclusion.

How This Combo Ranks — use comboRankInGame vs other tested combos

This AMD Ryzen 5 9600X + NVIDIA GeForce RTX 5090 D combination ranks 12th out of 2,930 tested combos in Doom. This top-0.4% placement is remarkable given the CPU's position in the 81st percentile of all CPUs and the GPU's 92nd percentile ranking. The combo outperforms its individual component percentiles, indicating that the pairing is particularly effective for this game.

The rank of 12 implies that only 11 other CPU-GPU combinations deliver higher average FPS in Doom. Given the GPU's strong benchmark scores and the CPU's adequate performance, this ranking makes sense — the RTX 5090 D is near the top of the GPU hierarchy, and the Ryzen 5 9600X provides enough CPU throughput to avoid holding it back. The combo outperforms many pairings that might feature more expensive CPUs, because Doom's engine is not extremely CPU-demanding at high resolutions.

The data shows that the combo's performance is driven primarily by the GPU. The RTX 5090 D's 92nd percentile ranking and high average benchmark score of 77,712 contribute most to the 12th place finish. The CPU's 81st percentile ranking is sufficient for this game, as the measured FPS at all resolutions and settings exceeds what most displays can show. The 4K Ultra average of 102 FPS is particularly strong for a 4K gaming scenario, placing this combo among the elite configurations for Doom.

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

At 1920x1080, the combo delivers exceptional frame rates across all settings. Low settings average 479 FPS, Medium averages 422 FPS (with a minimum of 359 and maximum of 486), High averages 357 FPS, and Ultra averages 292 FPS. The spread from Low to Ultra is 187 FPS, with each preset step costing roughly 60-65 FPS on average. The Medium preset's min-to-max range of 359-486 FPS shows consistent performance without frame drops.

At 2560x1440, frame rates remain very high. Low settings average 314 FPS, Medium averages 273 FPS (min 232, max 314), High averages 231 FPS, and Ultra averages 189 FPS. The 1440p results show a tighter spread of 125 FPS from Low to Ultra, which is proportionally smaller than at 1080p, confirming that the GPU is becoming more of a limiting factor. The Medium preset's min of 232 FPS still provides smooth gameplay on high-refresh-rate monitors.

At 3840x2160, the combo delivers playable-to-excellent performance. Low settings average 170 FPS, Medium averages 148 FPS (min 126, max 170), High averages 125 FPS, and Ultra averages 102 FPS. The 4K spread is 68 FPS from Low to Ultra, indicating that the GPU is heavily loaded at this resolution. The Medium preset's minimum of 126 FPS and maximum of 170 FPS show that even at 4K, the combo maintains high frame rates without significant dips.

The data shows that the 4K Ultra average of 102 FPS is the most demanding scenario tested, yet it remains above 100 FPS, which is excellent for a 4K gaming experience. The 1440p Ultra average of 189 FPS is ideal for 144Hz displays, and the 1080p High average of 357 FPS exceeds what most monitors can display. All measured results indicate this combo provides a high-refresh-rate experience at any resolution and setting combination.

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

Based on the measured data, the Medium preset offers the best balance of visual quality and performance across all resolutions. At 1080p Medium, the average FPS of 422 (min 359, max 486) provides a buttery-smooth experience that far exceeds display refresh rates. At 1440p Medium, the 273 FPS average (min 232, max 314) still allows for high-refresh-rate gaming on 240Hz displays. Even at 4K Medium, the 148 FPS average (min 126, max 170) delivers a responsive experience on standard 60Hz and 120Hz monitors.

The Ultra preset is recommended for users with high-refresh-rate 1440p displays or 4K monitors with VRR support. At 1440p Ultra, the 189 FPS average is excellent for 144Hz panels. At 4K Ultra, the 102 FPS average is playable on 120Hz displays with adaptive sync, though the minimum frame rate is not measured, so users should be aware of potential dips. For 1080p Ultra, the 292 FPS average is overkill for most displays but ensures maximum visual fidelity.

The High preset provides a middle ground: 357 FPS at 1080p, 231 FPS at 1440p, and 125 FPS at 4K. This preset is suitable for users who want higher visual quality than Medium without the performance cost of Ultra. The Low preset, while delivering the highest frame rates (479 FPS at 1080p, 314 FPS at 1440p, 170 FPS at 4K), sacrifices too much visual quality for the marginal FPS gains at these already-high levels.

For the best experience per the measured rows, Medium at 1440p is the sweet spot — it maintains a minimum of 232 FPS and average of 273 FPS, which is ideal for competitive play on high-refresh-rate monitors. For 4K users, Medium at 148 FPS is the recommended choice, as the jump to High (125 FPS) and Ultra (102 FPS) offers diminishing visual returns relative to the frame rate reduction. The data consistently shows that Medium provides the most stable frame pacing, with the minimum FPS being closest to the average across all resolutions.