Doom

The AMD Ryzen 9 7900X paired with the AMD Radeon RX 5700 XT delivers a playable but heavily GPU-bound experience in Doom, with the data showing a clear pattern where frame rates are dictated by resolution and settings rather than the CPU's substantial headroom. The measured FPS indicates this combo ranks in the 74th percentile of all tested combinations, placing it at 2758 out of 3712. This is a configuration that excels at 1080p and 1440p, but struggles to maintain high refresh rates at 4K, particularly when visual fidelity is pushed to Ultra.

Resolution Scaling

The performance drop from 1080p to 4K is the defining characteristic of this combo, with the data showing a steep decline that points squarely at the GPU as the limiting component. At High settings, the average frame rate falls from 138 FPS at 1920x1080 to 89 FPS at 2560x1440, a reduction of 35.5%, and then further down to 48 FPS at 3840x2160, representing a 65.2% drop from the 1080p baseline. This scaling pattern is typical of a system where the RX 5700 XT's 8 GB of GDDR6 memory and 448.0 GB/s bandwidth become overwhelmed as pixel count increases. The 1440p result of 89 FPS is still respectable, but the 4K figure of 48 FPS drops below the 60 FPS threshold that many players consider the minimum for smooth gameplay.

Looking at the Low settings data reveals an even starker contrast. At 1920x1080, the combo achieves 188 FPS, which drops to 121 FPS at 2560x1440 and 66 FPS at 3840x2160. The percentage declines are consistent—35.6% for the 1440p step and 45.5% for the 4K step—indicating that the GPU's raw throughput is the dominant factor regardless of settings. The fact that even at Low settings the 4K result cannot reach 70 FPS suggests that pixel fill rate and memory bandwidth, rather than shader complexity, are the bottlenecks. The RX 5700 XT's pixel rate of 121.9 GPixel/s and texture rate of 304.8 GTexel/s are simply insufficient for 4K at high frame rates.

The Medium settings data provides the only min/max frame time information in the pack, showing at 3840x2160 an average of 57 FPS with a minimum of 49 and maximum of 66. This 17 FPS spread indicates some frame pacing inconsistency at 4K, which could manifest as stutter during intense combat scenes. At 2560x1440 Medium, the average rises to 106 FPS with a tighter range of 90 to 122 FPS, suggesting that 1440p is the practical ceiling for this combo if consistent frame delivery is a priority. The Ultra settings results confirm the trend, with 40 FPS at 4K, 73 FPS at 1440p, and 113 FPS at 1080p, showing that the Ultra preset exacts a heavy toll at every resolution.

CPU Role

The AMD Ryzen 9 7900X is a 12-core, 24-thread processor based on the Zen 4 architecture, built on a 5 nm process by TSMC. Its benchmark scores place it in the 91st percentile of all CPUs, with an average benchmark score of 53288. The data shows this processor is far more capable than what Doom requires, as evidenced by its nearest rivals: the AMD EPYC 7313P trails by a mere 0.2%, the Intel Xeon Phi 7290 leads by 0.3%, and the Intel Core i7-14700F is ahead by 0.6%. In practical terms, the 7900X's 4.70 GHz base clock and 5.60 GHz boost clock provide immense single-threaded performance, with a 3dmark single-thread score of 1093 and a passmark single-thread score of 4238.

For a game like Doom, which is not known for heavy multi-threaded CPU demands, the 7900X's 12 cores and 24 threads are largely underutilized. The processor's 3dmark scores show strong scaling from 2 threads (2137) to 4 threads (4151) to 8 threads (7798), but the marginal gains from 8 to 16 threads (10972) and max threads (12536) suggest diminishing returns for gaming workloads. The 64 MB of shared L3 cache and 83.2 GB/s memory bandwidth are more than sufficient to feed the GPU, meaning the CPU is unlikely to be the source of any frame rate limitations in this configuration. The cinebench r23 multicore score of 29300 and single-core score of 2016.5 further reinforce that this is a processor with substantial headroom for future titles or multitasking scenarios.

However, the CPU's influence becomes apparent when examining the frame rate gaps at lower resolutions. At 1080p, the difference between Low (188 FPS) and Ultra (113 FPS) is 75 FPS, a 39.9% reduction. This gap narrows at 1440p (121 to 73, a 39.7% drop) and at 4K (66 to 40, a 39.4% drop). The consistency of this percentage across resolutions indicates that settings changes primarily affect GPU workload, while the CPU maintains a stable frame delivery ceiling. The 7900X's passmark physics score of 3060 and data encryption score of 37263 show it can handle complex calculations without breaking a sweat, but in Doom, those capabilities are rarely taxed.

GPU Role

The AMD Radeon RX 5700 XT is the clear bottleneck in this pairing, and the data supports this conclusion across all metrics. This GPU, based on the RDNA 1.0 architecture with 2560 shading units, 160 TMUs, and 64 ROPs, achieves a passmark g3d score of 16277 and sits in the 59th percentile of all GPUs. Its nearest rivals show how tightly clustered it is: the AMD Radeon Pro 5600M is 0.1% ahead, the NVIDIA RTX PRO 6000 Blackwell is 0.3% behind, and the AMD Radeon PRO W7500 trails by 0.3%. The 8 GB of GDDR6 memory on a 256-bit bus provides 448.0 GB/s of bandwidth, which proves adequate for 1080p and 1440p but becomes strained at 4K.

The GPU's clock behavior is revealing: a base clock of 1605 MHz, a game clock of 1755 MHz, and a boost clock of 1905 MHz. These frequencies, combined with a 225 W TDP, suggest the card is designed for high-throughput rasterization rather than ray tracing or compute-heavy workloads. The fp32 performance of 9.754 TFLOPS and fp16 of 19.51 TFLOPS (2:1) are respectable for the era but lag behind modern competitors. The 3dmark steel nomad dx12 score of 2134 and geekbench vulkan score of 68310 indicate DirectX 12 and Vulkan performance that aligns with its 2019 release, but Doom's Vulkan implementation appears to benefit from the card's architecture.

The GPU's limitations are most evident in the 4K Ultra result of 40 FPS, which is exactly half the 1080p High result of 80 FPS (not directly measured, but interpolated from the 138 FPS High result). The passmark directx 12 score of 64 and directx 11 score of 116 suggest that the card's driver optimization for modern APIs is average, and this likely contributes to the frame rate drops at higher resolutions. The 448.0 GB/s memory bandwidth becomes a hard ceiling at 4K, as the game's texture streaming requirements outpace what the card can deliver. For a game released in 2016, the RX 5700 XT should theoretically handle 4K, but the measured data shows it falls short, indicating that Doom's higher presets demand more memory throughput than this GPU can provide.

FAQ

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

A: The data shows 2560x1440 is the sweet spot. At Medium settings, the combo achieves 106 FPS with a minimum of 90 and maximum of 122, which is smooth and responsive. At 1080p, it reaches 164 FPS on Medium, but the visual clarity improvement at 1440p is worth the 35.4% frame rate reduction.

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

A: Technically yes, but with compromises. At High settings, the average FPS is 48, which dips below the 60 FPS threshold. At Low settings, it reaches 66 FPS, but this requires sacrificing visual fidelity. The 4K Ultra result of 40 FPS is not recommended for competitive play.

Q: How does the RX 5700 XT compare to its nearest rivals in synthetic benchmarks?

A: The GPU's passmark g3d score of 16277 is nearly identical to its closest competitors. The AMD Radeon Pro 5600M scores 16351 (0.1% higher), the NVIDIA RTX PRO 6000 Blackwell scores 16408 (0.3% higher), and the AMD Radeon PRO W7500 scores 16415 (0.3% higher). These differences are within noise margins.

Q: Is the Ryzen 9 7900X overkill for Doom?

A: The CPU's benchmark scores suggest it is. With a 91st percentile ranking and an average benchmark score of 53288, the 7900X provides far more processing power than Doom requires. Its nearest rival, the Intel Core i7-14700F, scores 53620, which is 0.6% higher, showing that even a mid-range modern CPU would likely perform similarly in this game.

Q: What settings should be used for competitive play?

A: For maximum frame rates at 1080p, Low settings yield 188 FPS. At 1440p, Low settings produce 121 FPS. These settings minimize GPU load and allow the RX 5700 XT to deliver its highest refresh rates. The 1080p Low result is 66.4% higher than 1080p Ultra (113 FPS).

Q: How does the CPU's multi-threaded performance influence Doom?

A: The 7900X's 3dmark scores show strong scaling from 2 threads (2137) to 16 threads (10972), but Doom likely uses fewer threads. The passmark multithread score of 51406 and cinebench r23 multicore of 29300 indicate high headroom, but the game's frame rates are limited by the GPU, not the CPU.

How This Combo Ranks

This combination of the AMD Ryzen 9 7900X and AMD Radeon RX 5700 XT ranks 2758 out of 3712 tested combos in Doom, placing it in the 74.3rd percentile. This is a solid mid-tier ranking that reflects the GPU's limitations rather than the CPU's strengths. The 7900X's 91st percentile CPU ranking is dragged down by the RX 5700 XT's 59th percentile GPU ranking, resulting in a combined score that is lower than what the processor alone would suggest.

In the context of all tested combos, this ranking means there are 2757 configurations that achieve higher frame rates in Doom, while only 954 perform worse. The gap between the CPU and GPU performance percentiles (32 percentage points) is striking and indicates a significant imbalance. This is not a pairing where the CPU and GPU complement each other perfectly; rather, it is a configuration where a high-end processor is held back by a mid-range graphics card. For comparison, a system with a lower-tier CPU but a higher-tier GPU would likely rank higher in Doom, as the game is primarily GPU-bound at most settings and resolutions.

The ranking of 2758 out of 3712 also suggests that this combo is better suited for other workloads than for Doom specifically. The 7900X's passmark integer math score of 169273 and floating point math of 103952 show excellent productivity performance, but these strengths do not translate to gaming frame rates when paired with the RX 5700 XT. Gamers using this combo should focus on 1080p or 1440p gaming, where the ranking would likely be higher relative to other combos, rather than 4K where the GPU becomes the limiting factor.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of this combo's performance across three resolutions and four settings levels. At 1920x1080, the results are as follows: Low settings deliver an average of 188 FPS, Medium produces 164 FPS with a minimum of 139 and maximum of 188, High achieves 138 FPS, and Ultra drops to 113 FPS. This resolution shows the RX 5700 XT operating within its comfort zone, with even Ultra settings maintaining above 100 FPS. The spread from Low to Ultra is 75 FPS, representing a 39.9% performance penalty for maximum visual quality.

Moving to 2560x1440, the frame rates decrease predictably: Low settings average 121 FPS, Medium achieves 106 FPS with a range of 90 to 122 FPS, High produces 89 FPS, and Ultra falls to 73 FPS. This resolution represents the best balance of visual quality and performance, as even High settings stay above 85 FPS. The gap between Low and Ultra is 48 FPS, a 39.7% reduction, which is nearly identical to the percentage at 1080p, confirming that settings have a consistent relative impact regardless of resolution.

At 3840x2160, the GPU's limitations become apparent: Low settings average 66 FPS, Medium produces 57 FPS with a minimum of 49 and maximum of 66, High drops to 48 FPS, and Ultra bottoms out at 40 FPS. The percentage drop from Low to Ultra at 4K is 39.4%, matching the other resolutions, but the absolute numbers are much lower. The Medium settings data at 4K shows a 17 FPS spread between minimum and maximum, which is the widest of any resolution and indicates frame time inconsistency. The 4K results clearly show that this combo is not designed for ultra-high-resolution gaming, with only Low settings approaching the 60 FPS mark. For players prioritizing frame rate, 1080p offers the best experience, while 1440p provides a good compromise between visual fidelity and smoothness.