Doom

The AMD Ryzen 5 9600X paired with the AMD Radeon RX 6750 XT delivers a robust 1080p experience in Doom, though the data reveals a clear shift in bottleneck behavior as resolution climbs. At 1920x1080 with Low settings, the combo reaches 239 FPS, while the High preset still manages 178.9 FPS. These figures indicate substantial headroom for high-refresh-rate monitors, with the CPU’s strong single-thread performance allowing the GPU to operate near its limits. The scaling from Low to Ultra at 1080p shows a drop of 90.9 FPS (from 239 to 148.1), a 38% reduction, which is significant but not catastrophic, suggesting the GPU is the primary constraint even at this lower resolution.

Resolution Scaling

The measured FPS data demonstrates a predictable yet steep decline as resolution increases, highlighting the GPU-bound nature of this configuration. At 2560x1440, the Ultra preset yields 93 FPS, while High produces 115 FPS. The gap between Low and Ultra at 1440p is 61.5 FPS (154.5 to 93), which is proportionally similar to the 1080p drop. However, the transition to 3840x2160 reveals a more dramatic shift. At 4K Ultra, the average FPS falls to 51.3, barely crossing the 60 FPS threshold at High settings (61.9 FPS). The delta between Low (82.9 FPS) and Ultra (51.3 FPS) at 4K is 31.6 FPS, a 38% reduction, mirroring the 1080p scaling pattern but at much lower absolute values.

This scaling behavior indicates that the RX 6750 XT’s 12 GB frame buffer and 432.0 GB/s memory bandwidth become the limiting factors at higher resolutions. The 4K Low preset’s 82.9 FPS versus the 1080p Low’s 239 FPS shows a 65% performance loss purely from resolution increase, which is characteristic of a mid-range GPU struggling with pixel throughput. The data suggests that at 1080p, the CPU’s 6-core/12-thread configuration with a 5.40 GHz boost clock can feed the GPU adequately, but at 4K, the GPU’s 13.31 TFLOPS compute capacity is insufficient to maintain high frame rates, regardless of the CPU’s capability.

CPU Role

The Ryzen 5 9600X, built on the Zen 5 architecture with a 4 nm process, provides the computational foundation for this combo. Its 6 cores and 12 threads are complemented by a 32 MB shared L3 cache, which is adequate for Doom’s engine that typically scales well with single-thread performance. The CPU’s benchmark scores reinforce this: a Cinebench R23 single-core score of 3603 and a multi-core score of 25525 place it in the 85th percentile of all CPUs. In Doom, which is known for its id Tech 6 engine efficiency, the single-thread performance is critical, and the 9600X’s 3DMark single-thread score of 1253 demonstrates strong per-core capability.

The CPU’s role becomes less pronounced at higher resolutions. At 1080p Low, the 239 FPS result suggests the CPU can push beyond the GPU’s capabilities, but at 4K Ultra, the 51.3 FPS is almost entirely GPU-limited. The CPU’s nearest rivals include the Intel Core i5-13490F with an average score delta of 0.3% and the AMD Ryzen 7 8845HS at -0.4%, indicating that the 9600X sits in a competitive mid-range position. The data shows that for Doom, the CPU’s 5.40 GHz boost clock and 3.90 GHz base clock provide sufficient headroom, but the GPU’s 2600 MHz boost and 2560 shading units become the limiting factor as resolution scales.

FAQ

Q: What is the average FPS at 1080p with High settings?

A: The measured average FPS at 1920x1080 with High settings is 178.9 FPS, which is comfortably above the 144 Hz refresh rate threshold for most gaming monitors.

Q: How does the combo perform at 4K Ultra settings?

A: At 3840x2160 with Ultra settings, the average FPS drops to 51.3, which is below the 60 FPS target for smooth gameplay. The High preset at 4K achieves 61.9 FPS, barely meeting that threshold.

Q: Is the CPU or GPU the bottleneck in this configuration?

A: The benchmark data indicates a GPU bottleneck at all resolutions. The 1080p Low preset’s 239 FPS versus the 4K Low preset’s 82.9 FPS shows a 65% drop purely from resolution, suggesting the RX 6750 XT cannot maintain throughput as pixel count increases.

Q: What is the frame rate difference between Low and Ultra at 1440p?

A: At 2560x1440, the Low preset achieves 154.5 FPS, while Ultra drops to 93 FPS, representing a 61.5 FPS difference (40% reduction) that demonstrates the GPU’s sensitivity to quality settings.

Q: How does this combo rank among all tested configurations in Doom?

A: The combo ranks 846 out of 1681 tested combos, placing it in the upper-middle tier. The GPU’s 79th percentile ranking versus the CPU’s 85th percentile indicates the GPU is the weaker component.

Q: What is the maximum achievable FPS with this setup?

A: The highest measured average FPS is 239 at 1080p with Low settings. This represents the ceiling for this combo, with any increase in quality or resolution resulting in lower frame rates.

Settings Recommendations

Based on the measured data, the optimal balance between visual quality and performance occurs at 1440p with High settings, delivering 115 FPS. This resolution provides a significant upgrade over 1080p in image clarity while maintaining frame rates well above the 60 FPS standard. For players prioritizing smoothness, the 1080p High preset at 178.9 FPS is the best choice, as it leaves substantial headroom for frame pacing variations. The Medium preset at 1080p (212.9 FPS) offers a marginal FPS increase over High (178.9 FPS) but likely reduces visual fidelity with minimal benefit, as the difference is only 34 FPS.

At 4K, the data suggests avoiding Ultra settings, as the 51.3 FPS result falls below the 60 FPS threshold. The High preset at 4K (61.9 FPS) is the minimum viable option for 60 FPS gameplay, but the 1440p High preset (115 FPS) provides a more consistent experience with a 53 FPS advantage. The Low preset at 4K (82.9 FPS) is playable but sacrifices too much visual quality for the resolution gain. The sweet spot for this hardware is 1440p Medium (135 FPS) or High (115 FPS), both of which exceed the 100 FPS mark and offer a balanced experience. The Ultra preset at 1440p (93 FPS) is acceptable but begins to approach the lower bound of high-refresh-rate gaming.

How This Combo Ranks

The AMD Ryzen 5 9600X + AMD Radeon RX 6750 XT combination ranks 846 out of 1681 tested combos in Doom, placing it in the 50th percentile of all configurations. This mid-pack ranking reflects the GPU’s 79th percentile position among all GPUs, which is lower than the CPU’s 85th percentile standing. The disparity suggests that the GPU is the limiting factor in this pairing, as the CPU has more relative headroom. The GPU’s nearest rivals include the AMD Radeon RX 5600M (0.2% delta) and the NVIDIA GeForce RTX 3080 (-1.3% delta), indicating that the RX 6750 XT performs competitively against a mix of mobile and desktop parts.

The combo’s rank of 846 implies that 835 tested configurations outperform it in Doom, while 835 underperform, giving it a balanced position. The CPU’s nearest rival, the Intel Core i5-13490F, scores 0.3% higher on average, while the AMD Ryzen 7 8845HS scores 0.4% lower, suggesting that the CPU choice has minimal impact on overall ranking. The data indicates that upgrading the GPU would yield a more significant rank improvement than upgrading the CPU, given the GPU’s lower percentile standing. The 1080p results (148.1 to 239 FPS) place this combo in the upper range for competitive gaming, while the 4K results (51.3 to 82.9 FPS) show its limitations for high-resolution enthusiasts.