Doom

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

The AMD Ryzen 9 5950X is a 16-core, 32-thread processor from the 5000 series, built on the Zen 3 architecture (Vermeer) using TSMC's 7 nm process. It operates with a base clock of 3.40 GHz and a boost clock of 4.90 GHz, with a 105 W TDP. The processor's benchmark profile shows strong multi-threaded performance, including a Cinebench R23 multi-core score of 38607 and a single-core score of 5450, placing it in the 93rd percentile of all CPUs.

In Doom, this processor is far more capable than the game requires. The measured FPS data shows that even at 1080p Low, where the CPU load is highest relative to the GPU, the average frame rate reaches 95 FPS. This indicates that the Ryzen 9 5950X is not the limiting factor in this combination. The game's engine, originally released in 2016, is well-optimized for high refresh rates, and the processor's 32 threads are largely underutilized by a title that scales primarily with single-core performance. The single-thread benchmark score of 944 in 3DMark and 3470 in PassMark single-thread tests confirm that the processor delivers ample per-core speed for Doom's demands.

The CPU's 64 MB of L3 cache and DDR4 memory support with dual-channel 51.2 GB/s bandwidth provide sufficient memory throughput for the game's streaming needs. Compared to its nearest rivals, the Ryzen 9 5950X scores nearly identically to the Intel Core i5-14600K, with a deltaPct of -0.2%, and is 0.7% ahead of the Intel Xeon Gold 5318H. These marginal differences in synthetic benchmarks do not translate into meaningful FPS differences in Doom, as the game becomes GPU-bound at most settings and resolutions tested.

FAQ

Q: What is the maximum average FPS achievable with this CPU-GPU combo in Doom?

A: The highest recorded average FPS is 95 at 1920x1080 with Low settings. This represents the best-case scenario for frame rate in the measured data.

Q: How does the Ryzen 9 5950X compare to its closest rival in CPU benchmarks?

A: The Ryzen 9 5950X has an average benchmark score of 49062, which is 0.2% lower than the Intel Core i5-14600K (49166) and 0.6% lower than the Intel Core i5-14600KF (49367). It outperforms the Intel Xeon Gold 5318H by 0.7% (48698).

Q: Does the RX 570's 4 GB VRAM cause issues at 4K resolution?

A: The data shows that at 3840x2160, the average FPS ranges from 22 (Ultra) to 29.4 (Low). While VRAM capacity is not explicitly measured, the dramatic FPS drop from 1080p to 4K indicates the GPU is severely stressed at higher resolutions.

Q: What is the combo's ranking among all tested combinations in Doom?

A: This combination ranks 1593 out of 1681 tested combos, placing it in the bottom 95th percentile of all configurations measured for this game.

Q: Which settings preset provides the best balance of visual quality and performance?

A: At 1920x1080, High settings deliver 70.1 FPS, which is 11.8 FPS higher than Ultra (58.3 FPS) and only 9.9 FPS lower than Medium (80.4 FPS). High offers a substantial visual upgrade over Low while maintaining playable frame rates.

Q: How does the GPU's benchmark score compare to its nearest rivals?

A: The RX 570 has an average benchmark score of 30158, which is 0.2% higher than the NVIDIA GeForce RTX 5060 (30109) and 0.2% higher than the AMD Radeon RX 7700 XT (30097). It is 0.6% ahead of the NVIDIA Tesla M60 (29969).

Resolution Scaling

The measured FPS data reveals a clear pattern of GPU-bound scaling as resolution increases. At 1920x1080, the average frame rates range from 58.3 (Ultra) to 95 (Low), with even the most demanding preset remaining playable. Moving to 2560x1440, the FPS drops to between 38.1 (Ultra) and 58.6 (Low), representing a 38-45% reduction depending on settings. At 3840x2160, the performance collapses further to between 22 (Ultra) and 29.4 (Low), which is a 70-75% reduction from the 1080p results.

This scaling pattern indicates that the RX 570 is the limiting component at all resolutions above 1080p. The Ryzen 9 5950X's capacity is evident in the 1080p results, where even the lowest FPS (58.3 at Ultra) still demonstrates that the CPU can feed the GPU adequately. However, as resolution increases, the GPU's 224.0 GB/s memory bandwidth and 5.095 TFLOPS of FP32 compute become insufficient for the pixel throughput demanded by 2560x1440 and 3840x2160.

The data shows that the gap between Low and Ultra settings narrows as resolution increases. At 1080p, the difference is 36.7 FPS (95 vs 58.3), at 1440p it is 20.5 FPS (58.6 vs 38.1), and at 4K it is only 7.4 FPS (29.4 vs 22). This compression of performance differences at higher resolutions confirms that the GPU is saturated, and settings changes have diminishing returns when the render resolution exceeds the card's capabilities.

How This Combo Ranks

This combination of AMD Ryzen 9 5950X and AMD Radeon RX 570 ranks 1593 out of 1681 tested combos in Doom, placing it in the bottom 5% of all configurations. This low ranking is primarily attributable to the GPU, which lags far behind modern graphics cards in raw compute and memory bandwidth. The RX 570's 4 GB of GDDR5 memory and 2048 shading units are insufficient for a game that scales heavily with GPU throughput at higher resolutions.

The data shows that the CPU is not the bottleneck, as the Ryzen 9 5950X's benchmark scores (93rd percentile among all CPUs) far exceed what the GPU can utilize. The ranking reflects the imbalance between a top-tier processor and an entry-level graphics card from 2017. In practical terms, this combo performs acceptably at 1080p with medium-to-high settings, but the ranking indicates that many other combinations offer better overall performance in Doom.

The combo rank of 1593 out of 1681 suggests that most tested configurations, including those with weaker CPUs but stronger GPUs, achieve higher frame rates in this game. This is a textbook example of GPU-limited performance, where upgrading the graphics card would yield far greater gains than any processor change.

GPU Role

The AMD Radeon RX 570 is based on the Polaris 20 chip with GCN 4.0 architecture, manufactured on a 14 nm process at GlobalFoundries. It features 2048 shading units, 128 TMUs, and 32 ROPs, with base and boost clocks of 1168 MHz and 1244 MHz respectively. The 4 GB of GDDR5 memory runs at 1750 MHz (7 Gbps effective) across a 256-bit bus, providing 224.0 GB/s of bandwidth.

In Doom, the GPU's role is decisive across all tested resolutions. At 1920x1080, the RX 570 delivers playable frame rates ranging from 58.3 (Ultra) to 95 (Low), with High settings achieving 70.1 FPS. These results are consistent with a card that offers 5.095 TFLOPS of FP32 performance and a pixel rate of 39.81 GPixel/s. However, the 2560x1440 results show the GPU struggling, with only Low settings (58.6 FPS) maintaining a smooth experience, while Ultra drops to 38.1 FPS.

At 3840x2160, the RX 570 is clearly overwhelmed, with all settings producing average FPS below 30. The GPU's benchmark scores reflect this limitation: its 3DMark Steel Nomad DX12 score of 880 and Geekbench Vulkan score of 42752 place it in the 74th percentile of all GPUs. Compared to its nearest rivals, the RX 570 scores 0.2% higher than the RTX 5060 and RX 7700 XT, but these are synthetic benchmarks that do not directly translate to gaming performance at high resolutions.

Measured FPS Breakdown

At 1920x1080, the RX 570 delivers the following average frame rates:

• Low: 95 FPS
• Medium: 80.4 FPS
• High: 70.1 FPS
• Ultra: 58.3 FPS

Moving to 2560x1440, the performance drops significantly:

• Low: 58.6 FPS
• Medium: 53 FPS
• High: 44.2 FPS
• Ultra: 38.1 FPS

At 3840x2160, the frame rates become marginal:

• Low: 29.4 FPS
• Medium: 27.2 FPS
• High: 23.2 FPS
• Ultra: 22 FPS

The data shows a consistent pattern: each resolution step up from 1080p to 1440p reduces FPS by roughly 40-45%, and each step from 1440p to 4K reduces FPS by another 45-50%. The scaling is uniform across settings, confirming that the GPU is the primary bottleneck. At 1080p, the Ryzen 9 5950X's capabilities are partially visible, as even Ultra settings exceed 60 FPS. However, at higher resolutions, the GPU's memory bandwidth and compute throughput become the sole determinants of performance.

Settings Recommendations

For this combo, the optimal settings depend on the target resolution and desired frame rate. At 1920x1080, High settings provide the best balance, delivering 70.1 FPS while offering significant visual improvements over Low and Medium. The jump from Medium (80.4 FPS) to High (70.1 FPS) costs 10.3 FPS but adds substantial graphical fidelity. Ultra at 58.3 FPS is playable but sits close to the 60 FPS threshold, and the visual gain over High is marginal for the 11.8 FPS cost.

At 2560x1440, the data suggests that Low settings (58.6 FPS) are the only reliable option for smooth gameplay, as Medium drops to 53 FPS and High falls to 44.2 FPS. Users with adaptive sync displays might tolerate Medium, but the measured numbers indicate that Low is the safest choice for consistent frame pacing.

At 3840x2160, no settings preset achieves playable performance, with the highest average FPS being 29.4 at Low. This resolution is not recommended for this combination. The GPU's 4 GB VRAM and 224.0 GB/s bandwidth are insufficient for 4K rendering, as evidenced by the fact that even the lowest settings cannot reach 30 FPS.

For the best overall experience, the data recommends 1080p with High settings, which provides a 70.1 FPS average while maintaining visual quality. If higher frame rates are prioritized, dropping to Medium yields 80.4 FPS, a 14.7% improvement. The Ultra preset at 1080p (58.3 FPS) is the only setting that dips below 60 FPS at this resolution, making it a less attractive option for competitive play.