Doom

The AMD Ryzen 9 9900X paired with the AMD Radeon RX 6600 delivers a surprisingly capable experience in the 2016 classic Doom, though the data reveals a system that is heavily constrained by its graphics card. The 12-core, 24-thread CPU is a top-tier processor, while the RX 6600 is a more modest entry-level GPU. This imbalance becomes clear when examining the measured frame rates across resolutions, where the GPU’s 8 GB of VRAM and limited bandwidth create a hard ceiling on performance. The benchmark results show a clear narrative: the CPU is largely idle, waiting on the GPU to keep up, which is typical for a game like Doom that is well-optimized and scales strongly with graphics hardware.

FAQ

Q: What is the best resolution for this combo in Doom?

A: The measured data shows that 1920x1080 is the optimal resolution, with all settings presets delivering playable frame rates. At 2560x1440, performance remains good, but 3840x2160 High dips to 46 FPS, which is below the 60 FPS threshold for smooth play.

Q: How does the CPU compare to its closest rivals in overall benchmark scores?

A: The Ryzen 9 9900X has an average benchmark score of 54450. It is 0.4% behind the AMD Ryzen 9 9900X3D, 0.7% ahead of the Intel Core i7-14700F, 1.5% ahead of the Intel Core Ultra 5 245K, and 1.8% ahead of the Intel Core Ultra 5 245KF. These are extremely small margins, indicating near-identical average performance.

Q: What is the GPU’s performance percentile compared to all other GPUs?

A: The AMD Radeon RX 6600 sits at the 69th percentile of all GPUs, which places it in the mid-range tier. Its benchmark scores are nearly identical to the AMD Radeon 890M and AMD Radeon RX 580 2048SP, with a 0% and -0.2% delta respectively.

Q: How does the combo rank among all tested combinations for this game?

A: The combo ranks 1348 out of 1681 total combinations tested in Doom. This places it in the lower half of the database, which is expected given the mid-range GPU paired with a top-tier CPU.

Q: What is the maximum average FPS achievable at 1080p?

A: The highest average FPS recorded is 178.2 FPS, achieved at 1920x1080 with Low settings. This shows the game can run at very high frame rates when the GPU load is reduced.

Q: Does the GPU’s 8 GB VRAM become a limiting factor at any resolution?

A: The data shows performance drops at 3840x2160, with Ultra settings falling to 35.1 FPS. While the pack does not explicitly state VRAM exhaustion, the steep decline across all settings at 4K suggests the 8 GB capacity and 224.0 GB/s bandwidth are insufficient for the higher memory pressure.

GPU Role

The AMD Radeon RX 6600 is the primary driver of performance in this pairing. Its 8 GB of GDDR6 memory on a 128-bit bus provides 224.0 GB/s of bandwidth, which is a significant constraint at higher resolutions. The GPU’s clocks are listed with a base of 1626 MHz, a game clock of 2044 MHz, and a boost clock of 2491 MHz, showing it can reach high frequencies under load. However, the benchmark results indicate that the GPU’s raw throughput, measured at 8.928 TFLOPS FP32, is the bottleneck.

In Doom, the GPU’s role is evident in the scaling between presets. At 1920x1080, the average FPS ranges from 106.5 on Ultra to 178.2 on Low, a spread of 71.7 FPS. This suggests that the GPU is still the limiting factor even at 1080p, as the CPU is more than capable of feeding frames. The situation worsens at 2560x1440, where the Ultra preset delivers 69.6 FPS, and it becomes critical at 3840x2160, where even Low settings only produce 61.9 FPS. The GPU’s 69th percentile ranking among all GPUs is a good indicator of its mid-range positioning, and the data confirms that it cannot handle the demands of 4K gaming at high quality.

The GPU’s nearest rival, the AMD Radeon 890M, has a near-identical average score (25246 vs 25235), with a 0% delta. This shows that the RX 6600 is a solid performer for its class, but it lacks the headroom needed to push Doom beyond 1080p or 1440p High settings. The measured results at 4K, with all presets below 62 FPS, suggest that this combo is best suited for 1080p gaming, where it can consistently exceed 100 FPS on most settings.

CPU Role

The AMD Ryzen 9 9900X is a powerhouse that is severely underutilized in this game. With 12 cores and 24 threads based on the Zen 5 architecture, it has a base clock of 4.40 GHz and a boost clock of 5.60 GHz. Its benchmark scores are impressive, including a Cinebench R23 multi-core score of 46438 and a single-core score of 6555, placing it at the 94th percentile of all CPUs. The CPU’s average benchmark score of 54450 is only 0.4% behind the more expensive Ryzen 9 9900X3D, demonstrating its high performance.

In Doom, the CPU’s role is minimal because the game is well-optimized and scales heavily with the GPU. The measured FPS data shows that the CPU is not the limiting factor at any resolution. For example, at 1920x1080 Low, the combo achieves 178.2 FPS, which is a frame rate that would stress many CPUs, but the Ryzen 9 9900X has ample headroom. Even at 1080p Ultra, which produces 106.5 FPS, the CPU is likely operating well below its maximum potential, as the GPU is the one struggling to maintain that frame rate.

The CPU’s 64 MB of shared L3 cache and dual-channel DDR5 memory support with 89.6 GB/s bandwidth are more than sufficient for Doom. The data implies that the CPU could easily push higher frame rates if paired with a more powerful GPU, but with the RX 6600, it is held back. The nearest CPU rival, the Intel Core i7-14700F, has a delta of 0.7%, meaning the AMD chip is slightly faster on average, but this difference is irrelevant in a GPU-bound scenario. The conclusion is that the CPU is a future-proofing investment, while the GPU is the current bottleneck.

How This Combo Ranks

The combo rank of 1348 out of 1681 tested combinations places this system in the 20th percentile of all configurations tested for Doom. This is a low ranking, but it is important to contextualize it. The ranking is determined by the overall frame rate performance, which is heavily weighted toward the GPU. Since the RX 6600 is a mid-range card, the combo cannot compete with systems using high-end GPUs, even if they have weaker CPUs.

The data shows that the CPU’s high percentile (94th) does not translate into a high combo rank, because the GPU’s 69th percentile is the limiting factor. This indicates that the combo is poorly balanced for this game, but the imbalance is not a flaw; it simply reflects the user’s choice to pair a top-tier CPU with a budget GPU. The rank suggests that most other tested combos achieve higher frame rates, likely due to more powerful graphics cards. For a user who plans to upgrade the GPU in the future, this combo offers a strong foundation, but for immediate 4K gaming, it falls short.

The rank also highlights the importance of GPU selection in Doom. Compared to the CPU’s rivals, the GPU’s rivals all have similar scores, which means the combo rank would not change significantly if the CPU were swapped for an Intel Core Ultra 5 245K. However, if the GPU were upgraded to a model with a higher percentile, the combo rank would improve dramatically. The measured data is clear: the combo is CPU-heavy and GPU-light, which is a common but suboptimal configuration for gaming.

Resolution Scaling

The resolution scaling data reveals a classic GPU-bottleneck pattern. From 1920x1080 to 2560x1440, the average FPS drops by roughly 36% across all settings. For example, High settings fall from 130.8 FPS to 83.2 FPS, a reduction of 47.6 FPS. This is a significant drop, but it is expected as the pixel count increases by 78%. The drop is less severe from 2560x1440 to 3840x2160, where High settings go from 83.2 FPS to 46 FPS, a reduction of 37.2 FPS. The percentage drop is similar, but the absolute values are lower, indicating the GPU is struggling to maintain playable frame rates.

The scaling from 1080p to 4K shows that the GPU is the limiting component. At 1080p, the CPU has enough power to push high frame rates, but at 4K, the GPU’s 8 GB VRAM and 224.0 GB/s bandwidth are overwhelmed. The data shows that Low settings at 4K achieve 61.9 FPS, which is only 34.7% of the 178.2 FPS achieved at 1080p Low. This steep decline is a clear sign that the GPU is the bottleneck, as the CPU’s performance would not degrade with resolution.

The implications for gamers are clear: this combo is best suited for 1080p or 1440p gaming. At 4K, users would need to accept Low or Medium settings to get close to 60 FPS, which defeats the purpose of high-resolution gaming. The data suggests that the RX 6600 is not designed for 4K, and the CPU’s power is wasted at that resolution.

Measured FPS Breakdown

The measured FPS data provides a detailed look at performance across all settings and resolutions. At 1920x1080, the combo delivers excellent results: Low settings average 178.2 FPS, Medium averages 152.2 FPS, High averages 130.8 FPS, and Ultra averages 106.5 FPS. All presets are above 100 FPS, making 1080p the sweet spot for this combo.

At 2560x1440, performance remains solid but begins to dip. Low settings average 112.4 FPS, Medium averages 98.2 FPS, High averages 83.2 FPS, and Ultra drops to 69.6 FPS. While all presets are playable, the drop from 1080p is noticeable, with Ultra falling below 70 FPS.

At 3840x2160, the combo struggles. Low settings average 61.9 FPS, which is just above 60 FPS, but Medium drops to 55.8 FPS, High falls to 46 FPS, and Ultra plummets to 35.1 FPS. None of these are ideal for a fast-paced FPS, as 60 FPS is generally considered the minimum for smooth gameplay. The data shows a clear trend: the GPU cannot handle 4K, and users should stick to lower resolutions for a better experience.

Settings Recommendations

Based on the measured FPS data, the best experience for this combo is at 1080p with High settings. This preset delivers an average of 130.8 FPS, which is well above the 60 FPS threshold and provides a smooth, responsive experience. The High preset also offers a good balance between visual quality and performance, as the jump from High to Ultra only costs 24.3 FPS (130.8 to 106.5), but the visual difference is often minimal in fast-paced games.

For users with 1440p monitors, the Medium preset is the best choice. It averages 98.2 FPS, which is high enough for smooth gameplay, and it is only 14.2 FPS slower than Low. The High preset at 1440p is also viable at 83.2 FPS, but the Medium preset offers a better safety margin for demanding scenes.

At 4K, the Low preset is the only reasonable option, averaging 61.9 FPS. However, this is still below the ideal 60 FPS for competitive play, and the visual quality is significantly reduced. Users with 4K displays should either lower the resolution to 1440p or accept the limitations of the GPU. The data suggests that the Ultra preset should be avoided at all resolutions above 1080p, as it produces the lowest frame rates and is likely to cause noticeable stuttering in intense combat scenes.