Doom

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

The AMD Ryzen 9 5900X is a 12-core, 24-thread processor built on the Zen 3 architecture (codenamed Vermeer) using TSMC's 7 nm process. It operates with a base clock of 3.70 GHz and a boost clock of 4.80 GHz, with a 105 W TDP. The CPU's cache hierarchy includes 64 KB of L1 per core, 512 KB of L2 per core, and a substantial 64 MB of L3 cache. This configuration is well-suited for high-refresh-rate gaming, as the combination of 12 physical cores and high boost clocks provides both strong single-thread performance for game logic and ample multi-thread headroom for background tasks.

In terms of synthetic benchmarks, the 5900X posts a Cinebench R23 multi-core score of 16262 and a single-core score of 1527. Its Geekbench results are 14118 multi-core and 2083 single-core. The 3DMark suite shows scalability with thread count: 1852 with 2 threads, 3588 with 4 threads, 6601 with 8 threads, 9075 with 16 threads, and 10075 with max threads. This scaling pattern indicates the processor efficiently utilizes additional cores, which matters for games that spawn multiple worker threads.

The CPU's percentile ranking against all processors is 87, meaning it outperforms 87% of CPUs in the database. Its average benchmark score of 41376 places it in close competition with several recent mobile and desktop parts. The nearest rivals by average score include the Intel Core Ultra 7 366H at 41263 (0.3% lower), the Intel Core Ultra 7 356H at 41215 (0.4% lower), and the AMD Ryzen AI 5 PRO 440 at 41208 (0.4% lower). On the higher side, the Intel Core i7-14650HX scores 41576, which is 0.5% above the 5900X. These margins are tight, suggesting that in CPU-bound scenarios, the 5900X performs on par with these newer parts despite being from an earlier generation.

For Doom, which is a fast-paced FPS from 2016, the CPU's role is primarily to feed the GPU with draw calls and physics calculations. At 1080p, the data shows the CPU has significant headroom: the average FPS at High settings is 326, and at Low settings it reaches 363. The small difference between Low and High settings at 1080p (363 vs 326 FPS) indicates the game is not heavily CPU-limited at this resolution; otherwise, lowering settings would yield a larger FPS jump. The 5900X's high single-thread performance (PassMark single-thread score of 3469) ensures that the main game thread is not a bottleneck, allowing the GPU to stretch its legs.

FAQ

Q: How does the AMD Ryzen 9 5900X compare to its closest rivals in overall CPU performance?

A: The 5900X has an average benchmark score of 41376. It is 0.3% ahead of the Intel Core Ultra 7 366H (41263) and 0.4% ahead of both the Intel Core Ultra 7 356H (41215) and AMD Ryzen AI 5 PRO 440 (41208). It trails the Intel Core i7-14650HX by 0.5%, which scores 41576. These are very small margins, indicating near-parity performance.

Q: What is the CPU's percentile ranking and what does it signify?

A: The Ryzen 9 5900X ranks in the 87th percentile among all CPUs. This means it performs better than 87% of processors in the database, placing it in the upper tier for both gaming and productivity workloads.

Q: Does the CPU show strong multi-threaded scaling?

A: Yes. The 3DMark results scale from 1852 at 2 threads to 10075 at max threads, with intermediate scores of 3588 (4 threads), 6601 (8 threads), and 9075 (16 threads). This demonstrates that the 12-core, 24-thread design is effectively utilized when workloads expand across cores.

Q: What memory specifications does the CPU support?

A: The 5900X supports DDR4 memory in a dual-channel configuration, with a memory bandwidth of 51.2 GB/s. It also supports ECC memory, which is unusual for a desktop processor. The memory bus is dual-channel, and the platform uses PCIe Gen 4.

Q: How does the CPU's release date and MSRP factor into its positioning?

A: The CPU was released on 2020-11-04 with a launch MSRP of $549. Despite being several years old, it remains competitive with newer parts, as shown by its close benchmarking scores against the Intel Core Ultra 7 series and AMD Ryzen AI 5 PRO.

Q: What is the CPU's socket and platform?

A: It uses the AMD Socket AM4, with a PCIe Gen 4 interface. The production status is listed as "Active," meaning it is still a supported and current product in AMD's lineup.

How This Combo Ranks

The combination of the AMD Ryzen 9 5900X and the NVIDIA GeForce RTX 5090 D achieves a rank of 60 out of 2930 tested combos in Doom. This places the combo in the top 2% of all tested configurations, which is an exceptional result. The rank of 60 means that only 59 other CPU-GPU pairings produced higher average FPS in this specific game.

Given the components involved, this ranking is expected. The RTX 5090 D is a flagship GPU with a 92nd percentile ranking among all GPUs, and the 5900X ranks in the 87th percentile among CPUs. When two top-tier components are paired, the combo should land near the top of the leaderboard, and the data confirms this. The fact that it doesn't reach rank 1 suggests that a few other CPU choices may pair slightly better with the RTX 5090 D in Doom, likely due to higher single-thread performance or better memory latency characteristics.

The combo's position relative to the 2930 tested combos also indicates that this pairing is well-balanced. If the CPU were severely bottlenecking the GPU, the rank would be lower. The measured FPS data supports this balance: at 1080p High, the combo produces 326 FPS, and at 4K Ultra it still manages 102 FPS. These numbers show that the CPU is capable of driving the GPU to high frame rates across all settings and resolutions tested.

Measured FPS Breakdown

The measured FPS data covers three resolutions (1920x1080, 2560x1440, and 3840x2160) and four settings presets (Low, Medium, High, Ultra). The Medium preset includes both min and max FPS values, while the other presets only list average FPS.

1920x1080 (1080p):

• Low: 363 avg FPS
• Medium: 346 avg FPS (min 294, max 398)
• High: 326 avg FPS
• Ultra: 292 avg FPS

At 1080p, the combo delivers extremely high frame rates, with even the Ultra preset averaging 292 FPS. The spread from Low to Ultra is 71 FPS, which is the smallest absolute difference across all resolutions. This indicates that at 1080p, the GPU is not fully saturated at lower settings, and the CPU is capable of pushing out over 360 FPS in less demanding scenarios.

2560x1440 (1440p):

• Low: 314 avg FPS
• Medium: 273 avg FPS (min 232, max 314)
• High: 231 avg FPS
• Ultra: 189 avg FPS

At 1440p, the frame rates remain high but show a wider spread. The Low preset drops to 314 FPS (from 363 at 1080p), while Ultra drops to 189 FPS. The difference between Low and Ultra is now 125 FPS, roughly double the spread seen at 1080p. The Medium preset shows a min of 232 FPS, which is still comfortably above 144 Hz refresh rates.

3840x2160 (4K):

• Low: 170 avg FPS
• Medium: 148 avg FPS (min 126, max 170)
• High: 125 avg FPS
• Ultra: 102 avg FPS

At 4K, the frame rates scale down further. The Low preset averages 170 FPS, while Ultra averages 102 FPS. The spread from Low to Ultra is 68 FPS, which is similar in absolute terms to the 1080p spread (71 FPS), but the relative drop is larger because the baseline is lower. The Medium preset's minimum of 126 FPS is still above 120 Hz, but the Ultra preset's 102 FPS is the only measured configuration that dips below 120 FPS.

Resolution Scaling

The FPS drop from 1080p to 4K is a useful indicator of where the bottleneck lies. At High settings, the average FPS goes from 326 at 1080p to 231 at 1440p to 125 at 4K. This represents a 29% drop from 1080p to 1440p, and a 62% drop from 1080p to 4K. For the Low preset, the numbers are 363 → 314 → 170, which is a 13% drop to 1440p and a 53% drop to 4K.

The fact that frame rates drop significantly as resolution increases indicates that the GPU is the primary limiting factor at higher resolutions. If the CPU were the bottleneck, we would expect to see similar FPS across resolutions, because the CPU workload (draw calls, physics) doesn't change with resolution. Instead, the data shows that at 4K, the GPU is working much harder, pulling average FPS down from the 300+ range at 1080p to the 100-170 range at 4K.

However, the scaling is not perfectly linear, which suggests a mix of CPU and GPU limits. At 1080p Low, the 363 FPS is likely near the CPU's maximum frame generation capability for this game. The RTX 5090 D is so powerful that at 1080p Low, it can render frames faster than the CPU can issue draw calls. This is why the Low preset at 1080p (363 FPS) is only 49 FPS higher than the Medium preset (346 FPS), despite the GPU having more headroom at Low settings. The CPU becomes the limiting factor at very high frame rates.

At 4K, the situation reverses. The GPU is now the bottleneck, as evidenced by the larger FPS differences between settings. At 4K, the Ultra preset (102 FPS) is 68 FPS lower than the Low preset (170 FPS), which is a substantial gap. This indicates that the GPU's rendering workload at 4K Ultra is heavy enough to prevent the CPU from becoming the constraint.

Settings Recommendations

Based on the measured FPS data, the optimal settings preset depends on the target refresh rate and resolution.

At 1080p, all settings presets deliver over 290 FPS average. The Ultra preset at 292 FPS is more than sufficient for any 240 Hz or 360 Hz monitor. Even the most demanding preset is playable, so there is little reason to drop below Ultra at this resolution unless additional GPU headroom is desired for other tasks. The data shows that the CPU is the limiting factor at 1080p Low (363 FPS vs 346 FPS at Medium), so raising settings from Low to Medium only costs 17 FPS, which is negligible given the visual improvement.

At 1440p, the High preset averages 231 FPS, which is above 240 Hz, while the Ultra preset averages 189 FPS, which is above 165 Hz but below 240 Hz. For users with a 144 Hz or 165 Hz monitor, the Ultra preset provides the best visual quality while still maintaining a comfortable margin above the refresh rate. For users with a 240 Hz display, the High preset is the better choice, as it keeps the average FPS above 240. The Medium preset at 273 FPS is overkill for most displays and doesn't offer the visual fidelity of High or Ultra.

At 4K, the situation is more nuanced. The Ultra preset averages 102 FPS, which is suitable for a 120 Hz display but will show some frame drops below 100 FPS during intense scenes. The High preset at 125 FPS provides a more comfortable margin above 120 Hz, while the Medium preset at 148 FPS is even safer. The Low preset at 170 FPS is only recommended for users with very high refresh rate 4K monitors (e.g., 144 Hz or higher). For most users, the High preset at 125 FPS offers the best balance of visual quality and frame rate stability at 4K.

The Medium preset's min FPS values provide additional insight. At 4K Medium, the minimum FPS is 126, which is still above 120 Hz. At 1440p Medium, the minimum is 232, and at 1080p Medium, the minimum is 294. These minimums indicate that the frame pacing is consistent, with no severe drops that would cause stuttering.

GPU Role

The NVIDIA GeForce RTX 5090 D is a flagship GPU based on the GB202 chip, built on TSMC's 5 nm process. It features the Blackwell 2.0 architecture and belongs to the GeForce 50-series. The GPU has 21760 shading units, 680 texture mapping units, and 176 raster output units. It also includes 170 ray tracing cores and 680 tensor cores, providing substantial compute capacity for both traditional rasterization and future ray-traced workloads.

The GPU's clock speeds are listed as a base of 2017 MHz and a boost of 2407 MHz. Memory is a highlight: 32 GB of GDDR7 on a 512-bit bus, yielding a bandwidth of 1.79 TB/s. This is an enormous amount of memory bandwidth, which is critical for high-resolution textures and future-proofing. The memory clock is 1750 MHz, with an effective data rate of 28 Gbps.

In terms of raw compute, the RTX 5090 D delivers 104.8 TFLOPS of FP32 performance and 104.8 TFLOPS of FP16 (1:1 ratio). Its pixel rate is 423.6 GPixel/s, and its texture rate is 1,636.8 GTexel/s. These numbers place the GPU at the very top of the consumer graphics hierarchy, with a percentile ranking of 92 among all GPUs.

The GPU's average benchmark score is 77712, with a PassMark G3D score of 44065 and a PassMark GPU compute score of 28396. In 3DMark Steel Nomad DX12, it scores 14326. Its nearest rivals by average score include the AMD Radeon RX 6650M XT at 76904 (1.1% lower), the AMD Radeon RX 6850M XT at 78940 (1.6% higher), the NVIDIA Tesla P100 PCIe 12 GB at 79396 (2.1% higher), and the NVIDIA Tesla P100 PCIe 16 GB at 79605 (2.4% higher). These deltas are small, indicating that the RTX 5090 D's average benchmark score is comparable to several other high-end parts, though the Tesla P100s are data-center cards.

The GPU's role in Doom is to render frames as quickly as possible, and the measured FPS data shows it excels at this. At 1080p Low, the combo reaches 363 FPS, which is likely at or near the CPU's limit. At 4K Ultra, the GPU still manages 102 FPS, which is a strong result for a demanding resolution and settings combination. The GPU's 32 GB of VRAM is far more than Doom (released in 2016) requires, but it ensures that the card is not VRAM-limited in any scenario, even with future games that demand more memory.

The RTX 5090 D has a TDP of 575 W and requires a 950 W power supply, using a 1x 16-pin power connector. It is a dual-slot card with dimensions of 304 mm in length, 137 mm in height, and 48 mm in width. The GPU supports PCIe 5.0 x16 and offers display outputs of 1x HDMI 2.1b and 3x DisplayPort 2.1b. Its release date is 2025-01-29, listing the GeForce 40 series as its predecessor and the GeForce 60 series as its successor.