Doom

The AMD Ryzen 9 9900X paired with the AMD Radeon RX 6800 XT delivers a top-tier experience in Doom, ranking 605th out of 1681 tested combos. This places the configuration in the top 36% of all systems, a strong result for a combination that pairs a high-end 2024 CPU with a previous-generation flagship GPU. The data shows that this pairing is well-balanced for the game’s fast-paced action, though the GPU becomes the limiting factor at higher resolutions.

How This Combo Ranks

The combo’s rank of 605 out of 1681 places it comfortably in the upper half of all tested configurations, but not at the absolute top. This is notable because the Ryzen 9 9900X is a top-tier processor, sitting in the 94th percentile against all CPUs, while the RX 6800 XT is in the 87th percentile against all GPUs. The combination of two high-percentile parts results in a system that is faster than most, yet the ranking suggests that other combos with newer GPUs will outperform it in Doom’s most demanding settings.

The average benchmark score for the CPU is 54450, which is nearly identical to its nearest rival, the AMD Ryzen 9 9900X3D, which scores 54681 (a delta of -0.4%). This means the 9900X is essentially tied with the 3D V-Cache version in general compute. However, the GPU’s average score of 49982 is notably higher than its nearest rival, the NVIDIA GeForce RTX 4070 Ti SUPER, which scores 48704 (a delta of +2.6%). This tells a clear story: the CPU is competitive but not dominant, while the GPU is slightly ahead of its direct competitors.

In practice, this rank means the combo will handle Doom with ease at 1080p and 1440p, but will struggle to maintain maximum frame rates at 4K Ultra. The system is not a fringe contender; it is a solid, high-performance option that sits in the upper-middle tier of the database. Users should expect excellent performance, but they will need to make some setting adjustments to hit the highest refresh rates at 4K.

GPU Role

The Radeon RX 6800 XT is the primary driver of Doom’s performance in this pairing, and its specifications reflect a design focused on high-throughput rasterization. The card features 16 GB of GDDR6 memory on a 256-bit bus, delivering 512.0 GB/s of bandwidth. This is more than sufficient for Doom’s textures and assets, even at 4K resolution. The GPU’s memory clock runs at 2000 MHz (16 Gbps effective), which is standard for the RX 6000 series.

The core clock speeds are where the performance comes from. The base clock is 1825 MHz, the game clock is 2015 MHz, and the boost clock reaches 2250 MHz. These clocks are relatively high for a 7 nm chip, and they allow the RX 6800 XT to sustain high frame rates in Doom’s Vulkan-based engine. With 4608 shading units, 288 TMUs, and 128 ROPs, the card is well-equipped to handle the game’s geometry and pixel work.

The GPU’s compute power is substantial, with a FP32 performance of 20.74 TFLOPS. This is a key factor in Doom, which relies heavily on raw shader throughput. The data confirms that the GPU is the bottleneck at 4K, as frame rates drop significantly with higher settings. At 1080p, the CPU is more likely to be the limiting factor, but at 4K Ultra, the GPU is clearly working at its limit. The card’s percentile rank of 87 against all GPUs, while 13% above the RTX 4070 Ti SUPER in average score, shows it still has the muscle for demanding titles.

Resolution Scaling

The measured FPS data reveals a consistent and expected pattern: performance scales inversely with resolution, but the drop is not linear. From 1080p to 1440p, the frame rate loss is moderate, but from 1440p to 4K, the drop becomes severe, particularly at higher settings. This indicates that the GPU is the primary bottleneck at 4K, while the CPU has more headroom to push frames at lower resolutions.

At 1080p High, the combo delivers 211.3 FPS. Moving to 1440p High drops this to 139.8 FPS, a 33.8% decrease. From 1440p to 4K High (76.6 FPS), the drop is another 45.2%. This pattern holds across all settings. For Low settings, the 1080p result is 292.7 FPS, which falls to 185.7 FPS at 1440p (a 36.5% drop) and then to 102.3 FPS at 4K (a 44.9% drop). The scaling is similar for Medium and Ultra.

The key insight is that the drop from 1080p to 1440p is roughly 35%, which is less than the pixel count increase of 77.8%. This suggests the CPU is still contributing meaningfully at 1440p. However, the drop from 1440p to 4K, which is a 125% increase in pixels, results in a 45% frame rate drop. This shows the GPU is becoming saturated. The limiting component clearly shifts from the CPU at 1080p to the GPU at 4K.

FAQ

Q: What is the best resolution to play Doom with this combo?

A: According to the measured data, 2560x1440 is the sweet spot. At High settings, it delivers 139.8 FPS, which is high enough for smooth gameplay. 4K is playable at High (76.6 FPS), but 1440p offers a much larger margin for high refresh rates.

Q: How does the Ryzen 9 9900X compare to its direct rival, the 9900X3D?

A: The average benchmark scores are nearly identical: 54450 for the 9900X and 54681 for the 9900X3D, a delta of -0.4%. In general compute, they are effectively tied, meaning the 9900X does not lose meaningful performance to the 3D V-Cache model in this game’s CPU-related tasks.

Q: Is the RX 6800 XT fast enough for 4K gaming?

A: Yes, but with limitations. The data shows 4K High at 76.6 FPS and 4K Ultra at 59.3 FPS. It is playable, but users who want 60+ FPS at Ultra will need to lower settings to High or Medium.

Q: How does the combo’s GPU compare to the RTX 4070 Ti SUPER?

A: The RX 6800 XT has a higher average benchmark score of 49982 compared to the RTX 4070 Ti SUPER’s 48704, a delta of 2.6%. This indicates the RX 6800 XT is slightly faster in synthetic tests, but the difference is small.

Q: What is the biggest performance difference between Low and Ultra settings?

A: At 1080p, Low hits 292.7 FPS while Ultra hits 174.8 FPS, a difference of 117.9 FPS. At 4K, the difference is 43.0 FPS (102.3 vs 59.3). The gap narrows as resolution increases, confirming the GPU is the bottleneck at 4K.

Q: Is this combo ranked higher than most others?

A: Yes, it ranks 605th out of 1681 combos, placing it in the top 36%. This is a strong result, though not top-tier, indicating that many newer GPU configurations will outperform it.

Settings Recommendations

Based on the measured FPS rows, the optimal settings depend heavily on the target resolution. For 1080p, the Ultra preset is clearly the best choice, as it delivers 174.8 FPS. This is well above the 144 Hz refresh rate that most high-end monitors use, and the visual quality upgrade from High (211.3 FPS) is worth the 36.5 FPS drop. There is no reason to run Low (292.7 FPS) or Medium (251.4 FPS) at this resolution, as the system has ample headroom.

At 1440p, the High preset is the recommended starting point, delivering 139.8 FPS. This is a comfortable margin above 120 Hz, and the step down to Medium (164.3 FPS) is minor, while the step up to Ultra (114.5 FPS) is still playable but drops below 120 FPS. For competitive play, Medium is the best choice to stay above 160 FPS. For a balanced experience, High is the ideal preset.

At 4K, the situation is more nuanced. The Ultra preset at 59.3 FPS is just below the 60 FPS target, so it is not recommended for a consistent experience. The High preset at 76.6 FPS is the best choice, offering smooth gameplay. The Medium preset at 86.8 FPS is also viable if users want extra headroom, but the visual difference is negligible. The Low preset at 102.3 FPS should be used only if the user prioritizes frame rate over everything else.

CPU Role

The AMD Ryzen 9 9900X plays a supporting role in Doom, particularly at lower resolutions. With 12 cores and 24 threads, based on the Zen 5 architecture, it has more than enough horsepower for this game, which is optimized for high thread counts. The base clock of 4.40 GHz and boost clock of 5.60 GHz provide excellent single-thread performance, which is critical for Doom’s primary game logic.

The CPU’s benchmark scores underline its strength. In Cinebench R23, it scores 46438 multicore and 6555 singlecore. These scores are 94th percentile against all CPUs, meaning it outperforms the vast majority of processors. The L3 cache of 64 MB shared is more than enough for Doom’s asset streaming, and the DDR5 memory support with 89.6 GB/s bandwidth ensures the CPU is never starved for data.

In the measured results, the CPU’s influence is most visible at 1080p. The jump from Low to Ultra settings at 1080p (292.7 to 174.8 FPS) is largely a GPU workload, but the fact that the CPU can feed the GPU fast enough to exceed 290 FPS shows it is not a bottleneck. At 4K, the CPU’s role is diminished, as the GPU is clearly the limiting factor. The 9900X is a future-proof component, but in this specific game, it is not the star of the show.

Measured FPS Breakdown

The complete measured FPS data for the AMD Ryzen 9 9900X and AMD Radeon RX 6800 XT combination is as follows:

At 1920x1080, the combo achieves 292.7 FPS on Low, 251.4 FPS on Medium, 211.3 FPS on High, and 174.8 FPS on Ultra. The scaling from Low to Ultra is a 40.3% reduction, demonstrating that the GPU is handling most of the work, but the CPU can keep up with the highest frame rates.

At 2560x1440, the results are 185.7 FPS on Low, 164.3 FPS on Medium, 139.8 FPS on High, and 114.5 FPS on Ultra. The drop from 1080p to 1440p is significant, averaging around 35%, but the frame rates remain high enough for smooth gaming.

At 3840x2160, the results are 102.3 FPS on Low, 86.8 FPS on Medium, 76.6 FPS on High, and 59.3 FPS on Ultra. The 4K Ultra result is the only one below 60 FPS, indicating that the GPU is at its limit. The data shows that the combo is best suited for 1440p gaming, where it can maintain high frame rates across all settings.