Doom

The AMD Ryzen 7 9800X3D and AMD Radeon RX 6600 pairing in Doom presents a clear case of GPU-bound performance at higher resolutions, with the CPU’s substantial headroom becoming apparent only as resolution drops. The dataset shows a system that delivers excellent 1080p performance, remains highly playable at 1440p, and begins to strain at 4K, particularly under the Ultra preset. Analysis of the measured frames per second (FPS) reveals a consistent pattern where the Radeon RX 6600’s 8 GB memory configuration and clock speeds dictate the experience, while the Ryzen 7 9800X3D’s 8-core, 16-thread architecture ensures the GPU is the primary limiting factor.

Resolution Scaling

The FPS decline from 1920x1080 to 3840x2160 is steep and consistent across all settings, confirming that the rendering load scales heavily with pixel count. At High settings, the average frame rate drops from 129 FPS at 1080p to 84 FPS at 1440p, a reduction of 45 FPS, and then to 45 FPS at 4K, which is a 65% decrease from the 1080p baseline. This scaling pattern is typical for a GPU-bound scenario; the RX 6600’s 224.0 GB/s memory bandwidth and 8 GB of GDDR6 memory are taxed increasingly as the resolution rises.

The Low preset exhibits the same trend, with 176 FPS at 1080p slipping to 114 FPS at 1440p and then to 62 FPS at 4K. The percentage drop from 1440p to 4K is 46%, which is slightly less severe than the 48% drop seen from 1080p to 1440p. This suggests that while the pixel count increase from 1080p to 1440p is a major hurdle, the jump to 4K continues to pressure the GPU’s shading units and ROPs, which are rated at 1792 and 64 respectively. The data indicates that the RX 6600’s compute resources are the bottleneck; the CPU’s 5.20 GHz boost clock and 96 MB of L3 cache are not the constraining factor at any resolution.

At Ultra settings, the scaling is more punishing, with 106 FPS at 1080p falling to 68 FPS at 1440p and then to a marginal 37 FPS at 4K. The 4K Ultra result is the only configuration where the average frame rate drops below 40 FPS, highlighting that the combination of high pixel count and maximum graphical fidelity exhausts the GPU’s capabilities. The difference between Low and Ultra at 4K is 25 FPS (62 vs 37), which is a 40% performance penalty for the highest preset. This gap narrows at 1080p, where the difference is 70 FPS (176 vs 106), indicating that the GPU has more headroom to absorb the extra workload at lower resolutions.

GPU Role

The AMD Radeon RX 6600, built on the RDNA 2.0 architecture with the Navi 23 chip, is the definitive performance limiter in this configuration. Its boost clock of 2491 MHz and game clock of 2044 MHz drive the 1792 shading units, but the 8 GB memory buffer and 128-bit bus width become critical at higher resolutions. The memory operates at 1750 MHz with a 14 Gbps effective rate, yielding a bandwidth of 224.0 GB/s, which is likely insufficient to feed the GPU’s compute units efficiently at 4K Ultra. The measured FPS data shows that the GPU’s pixel rate of 159.4 GPixel/s and texture rate of 279.0 GTexel/s are adequate for 1080p but struggle to maintain high frame rates as the pixel count quadruples.

The GPU’s 63rd percentile ranking among all GPUs and its average benchmark score of 19036 place it slightly above the NVIDIA Quadro K6000 (19030) and just below the NVIDIA GeForce RTX 4050 Mobile (19049), with deltaPct values of 0.0% and -0.1% respectively. This near-parity in synthetic benchmarks does not translate to Doom’s real-world results, where the GPU’s memory bandwidth and capacity are more decisive. The 8 GB VRAM is sufficient for the game’s textures at 1080p and 1440p, but the 4K Ultra preset may be exceeding its comfortable capacity, as evidenced by the 37 FPS average. The GPU’s 132 W TDP and PCIe 4.0 x8 interface are not limiting factors in this title, as the bottleneck is consistently the rendering pipeline rather than the data transfer rate.

How This Combo Ranks

In the database of tested combinations for Doom, this pairing of the Ryzen 7 9800X3D and RX 6600 holds a rank of 2883 out of 3712 total combos. This places it in the lower 22% of all tested configurations, which is predictable given that the RX 6600 is a mid-range GPU from 2021 that has since reached end-of-life status. The high-end CPU does not boost the combo’s standing because the GPU’s performance ceiling is the limiting factor in this game. The rank reflects that while the CPU is among the top 13% of all processors (87th percentile), the GPU’s 63rd percentile ranking pulls the overall combo down.

The combination’s rank is not a measure of playability but rather a comparison against other pairings, many of which likely feature more powerful GPUs. For instance, a combo with a similar CPU but a higher-tier GPU would rank significantly better due to the GPU’s ability to maintain higher frame rates at 4K. The data shows that the CPU’s 87th percentile ranking (with an average benchmark score of 39768) is far superior to the GPU’s 63rd percentile, creating an imbalance that is common in CPU-heavy builds paired with modest graphics cards. The combo’s rank of 2883 out of 3712 indicates that the RX 6600 is the primary reason this configuration does not compete with top-tier systems, despite the 9800X3D’s impressive multi-core and single-core scores.

Measured FPS Breakdown

At 1920x1080, the RX 6600 delivers excellent performance across all presets. The Low preset averages 176 FPS, which is the highest measured value in the entire dataset. Medium settings reduce this to 153 FPS (with a minimum of 130 FPS and maximum of 176 FPS), and High settings yield 129 FPS. The Ultra preset dips to 106 FPS, which remains well above the 60 FPS threshold for smooth gameplay. These numbers indicate that at 1080p, the GPU has sufficient headroom to handle the game’s most demanding settings without dropping below playable levels.

Moving to 2560x1440, the performance remains strong but shows the expected decline. Low settings average 114 FPS, Medium averages 99 FPS (min 84, max 114), and High averages 84 FPS. The Ultra preset falls to 68 FPS, which is still playable but begins to approach the 60 FPS mark. The 1440p results confirm that the GPU is capable of delivering a high-refresh-rate experience at medium-to-high settings, but users seeking Ultra settings will need to accept a frame rate below 70 FPS.

At 3840x2160, the GPU’s limitations become apparent. Low settings average 62 FPS, which is the only 4K preset to exceed 60 FPS. Medium settings drop to 54 FPS (min 46, max 62), High settings fall to 45 FPS, and Ultra settings bottom out at 37 FPS. The 4K Ultra result is the worst-case scenario, with an average frame rate that is below the 45 FPS average seen at High settings. This data suggests that 4K gaming with this combo is only viable at Low or Medium presets, and even then, the frame rates are marginal for competitive play.

FAQ

*Q: What is the best resolution for this CPU-GPU combo in Doom?*

A: The measured data shows that 1920x1080 is the optimal resolution, with all presets averaging above 106 FPS. The highest average frame rate is 176 FPS at Low settings, and even Ultra settings maintain a playable 106 FPS.

*Q: Can this combo handle 4K gaming in Doom?*

A: Yes, but with significant compromises. At 4K, only the Low preset averages above 60 FPS (62 FPS). Medium settings average 54 FPS, High averages 45 FPS, and Ultra averages 37 FPS, which is below the standard for smooth gameplay.

Q: How does the CPU’s performance compare to its rivals?

A: The Ryzen 7 9800X3D has an average benchmark score of 39768, which is 0.4% higher than the AMD Ryzen 7 PRO 8840HS (39603) and 0.7% higher than the AMD Ryzen AI 7 450 (39485). It trails the AMD Ryzen AI 9 365 by 0.7% (40048) and the AMD Ryzen 7 7700 by 0.8% (40081).

Q: Is the GPU the bottleneck in this system?

A: Yes, the data strongly indicates the GPU is the limiting factor. The FPS drops significantly with resolution increases, while the CPU’s 8 cores and 16 threads are more than sufficient for the game. The CPU’s 87th percentile ranking versus the GPU’s 63rd percentile confirms this imbalance.

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

A: At 2560x1440, Low settings average 114 FPS, while Ultra settings average 68 FPS. This represents a 46 FPS difference, showing that the Ultra preset imposes a 40% performance penalty over Low.

Q: Does the GPU’s 8 GB memory affect performance at higher resolutions?

A: The 8 GB GDDR6 memory is likely a contributing factor at 4K Ultra, where the average FPS drops to 37. At lower resolutions, the memory capacity appears sufficient, as frame rates remain high, but the 4K results suggest the GPU may be running out of memory bandwidth or capacity.

CPU Role

The AMD Ryzen 7 9800X3D, based on the Zen 5 architecture (Granite Ridge), provides a significant amount of processing power that is not fully utilized in Doom at the tested settings. With 8 cores and 16 threads, a base clock of 4.70 GHz, and a boost clock of 5.20 GHz, the CPU is capable of handling the game’s engine with ease. The 96 MB of shared L3 cache is a standout feature, likely reducing memory latency and improving frame pacing, though the measured FPS data does not show any CPU-related stutters or bottlenecks. The CPU’s 3DMark 16-thread score of 10081 and Cinebench R23 multi-core score of 23230 indicate strong multi-threaded performance, while the single-core score of 2080 in Cinebench R23 is equally impressive.

The CPU’s 87th percentile ranking among all CPUs, with an average benchmark score of 39768, places it in the upper echelon of processors. Its nearest rivals, such as the AMD Ryzen 7 PRO 8840HS (39603) and the AMD Ryzen AI 7 450 (39485), are within a 0.7% delta, showing that the 9800X3D is competitive but not dominant in synthetic benchmarks. In Doom, however, the CPU’s performance is more than adequate, as the game is not CPU-intensive at the resolutions tested. The fact that the 1080p Low preset achieves 176 FPS suggests that the CPU is capable of feeding the GPU with frames well beyond what the RX 6600 can render, confirming that the GPU is the system’s limiting component.

Settings Recommendations

Based on the measured FPS data, the optimal settings for this combo depend on the target resolution and frame rate. At 1920x1080, the Ultra preset is recommended for the best visual experience, as it averages 106 FPS, which is well above the 60 FPS threshold and provides a smooth, high-detail experience. If higher refresh rates are a priority, the High preset at 129 FPS or Medium at 153 FPS are excellent choices, with the Medium preset offering a minimum of 130 FPS.

For 2560x1440, the High preset is the best balance of visual quality and performance, averaging 84 FPS. The Ultra preset at 68 FPS is still playable, but the 84 FPS average of High settings provides more headroom for demanding scenes. Users who prefer maximum frame rates can opt for Low settings at 114 FPS, but this sacrifices visual fidelity for a marginal gain in smoothness. At this resolution, the Medium preset at 99 FPS is a strong alternative, offering a 15 FPS improvement over High with a moderate visual downgrade.

At 3840x2160, the Low preset is the only recommended option, averaging 62 FPS, which is just above the 60 FPS playability threshold. The Medium preset at 54 FPS is borderline, and users may find the frame rate dips to 46 FPS (as seen in the medium min FPS) to be noticeable. High and Ultra presets at 45 FPS and 37 FPS respectively are not recommended for a smooth experience. For 4K gaming, the data suggests that users should either accept Low settings or consider reducing the resolution to 1440p for a better balance of quality and performance. Overall, the best experience is achieved at 1080p with Ultra settings, or at 1440p with High settings, where the game remains fluid and visually impressive.