Doom

The AMD Ryzen 5 5600 paired with the AMD Radeon RX 7900 XTX delivers a fascinating case study in high-refresh-rate gaming on a 2016 title. The data shows a combination where the GPU is rarely the limiting factor, even at demanding resolutions, making the CPU’s role in frame pacing and maximum output the primary story.

Resolution Scaling

The measured FPS figures reveal a classic pattern of scaling, but with a twist. At 1080p, the combo is clearly CPU-bound, as reducing settings from Ultra to Low only increases the average frame rate from 220 to 341. This 121 FPS jump is substantial, but the absolute numbers are so high that they suggest the Ryzen 5 5600’s six cores are working near their limit to feed the Radeon RX 7900 XTX. The 341 FPS at Low settings reflects the CPU’s strong single-thread performance, but the fact that it cannot push higher indicates the bottleneck has shifted away from the GPU.

Moving to 1440p, the scaling becomes more linear. The average frame rate at Ultra is 143, which climbs to 174 at High, 206 at Medium, and 237 at Low. The delta between Ultra and Low here is 94 FPS, slightly less than at 1080p, but the pattern is consistent: the GPU is beginning to take on more responsibility, yet the CPU still holds the reins at lower presets. The 1440p results show a balanced system where neither component is fully saturated, but the CPU’s influence remains dominant.

At 4K, the story changes dramatically. The average frame rate at Ultra drops to 77, while High yields 94, Medium 112, and Low 128. The spread from Ultra to Low is 51 FPS, which is the smallest of the three resolutions. This indicates that the GPU is now the primary limiting factor, as the increased pixel count demands more from the 7900 XTX’s 24 GB of memory and 61.39 TFLOPS of compute power. The 4K results show that even this flagship GPU cannot completely overcome the resolution’s demands, but the CPU is no longer holding it back. The data implies that for 4K gaming, the RX 7900 XTX is the star, while at 1080p and 1440p, the Ryzen 5 5600’s architecture is the gatekeeper.

How This Combo Ranks

Within the database of 3,712 tested combinations, this pairing ranks 560th for Doom. That places it in the top 15% of all tested systems, which is an impressive position for a mid-range CPU from 2022 paired with a high-end GPU from the same year. The percentileVsAllCpus for the Ryzen 5 5600 is 74, meaning it outperforms 74% of all CPUs in the database, and the percentileVsAllGpus for the RX 7900 XTX is 64. This combination of a CPU that is above average and a GPU that is also above average creates a system that punches well above its weight in a game that is not particularly demanding by modern standards.

The combo rank of 560 suggests that most of the 3,152 combinations ranked above it likely feature newer, higher-core-count CPUs or top-tier GPUs. However, the data shows that for Doom, this pairing offers a level of performance that rivals more expensive configurations. The Ryzen 5 5600’s nearest rivals in the CPU benchmark averages are the Intel Core Ultra 7 258V, AMD Ryzen 5 8500G, and AMD EPYC 9454P, all with scores within 0.5% of each other. This tells us that the 5600 is sitting in a performance tier where minor architectural differences do not translate to meaningful FPS changes in this game. The GPU’s nearest rivals include the NVIDIA GeForce GTX 1060 3 GB and NVIDIA TITAN Xp, which are odd comparisons due to their age, but the 7900 XTX’s average benchmark score of 19,410 is clearly in a different league.

FAQ

Q: Is the AMD Ryzen 5 5600 a bottleneck for the RX 7900 XTX in Doom?

A: The data suggests yes at lower resolutions. At 1080p, the FPS scales from 220 at Ultra to 341 at Low, indicating the CPU is the limiting factor. At 4K, the FPS spread narrows to 77-128, showing the GPU takes over as the primary constraint.

Q: What is the best resolution for this combo to achieve over 200 FPS?

A: The measured data shows that 1440p is the sweet spot. At Medium settings, the average FPS is 206, and at Low settings, it reaches 237. At 1080p, you can achieve over 300 FPS, but the CPU limits the maximum output.

Q: How does the RX 7900 XTX’s 24 GB of VRAM affect performance in Doom?

A: Doom is not a VRAM-heavy game, so the 24 GB capacity is more than sufficient. The data shows no signs of memory-related stuttering, even at 4K Ultra, where the average FPS is 77. The GPU’s memory bandwidth of 960.0 GB/s is likely a more relevant factor.

Q: Does the CPU’s 6-core, 12-thread configuration matter for this game?

A: Doom is known to scale well with multiple cores, and the Ryzen 5 5600’s 12 threads provide enough parallelism. The benchmark results, such as 3dmark_16_threads at 5,641, show strong multi-threaded capability, but the single-thread score of 882 is what drives the high FPS at 1080p.

Q: What is the impact of the GPU’s boost clock on the 4K results?

A: The RX 7900 XTX has a boost clock of 2498 MHz and a game clock of 2365 MHz. The 4K results, which are GPU-bound, benefit from these high clocks, but the data does not isolate clock speed from other factors like the 61.39 TFLOPS FP32 performance.

Q: How does this combo rank against the most powerful systems?

A: With a combo rank of 560 out of 3,712, this pairing is in the top 15%. It is not the absolute fastest, but it outperforms the majority of tested systems, making it a high-performance option for Doom.

Measured FPS Breakdown

The measured FPS data is comprehensive across three resolutions and four settings presets. At 1080p, the average frame rates are 341 (Low), 319 (Medium), 269 (High), and 220 (Ultra). The Medium preset shows a minimum FPS of 271 and a maximum of 367, suggesting some frame time variance but no severe drops. The Low preset at 341 FPS is the peak performance, but it is clear the CPU is the limiting factor here.

At 1440p, the average frame rates are 237 (Low), 206 (Medium), 174 (High), and 143 (Ultra). The Medium preset has a minimum of 176 and a maximum of 237, which shows a wider range than at 1080p, indicating the GPU is starting to influence frame pacing. The jump from Low to Medium is 31 FPS, while from High to Ultra it is also 31 FPS, showing a consistent scaling pattern.

At 4K, the average frame rates are 128 (Low), 112 (Medium), 94 (High), and 77 (Ultra). The Medium preset is the only one with min/max data, showing a minimum of 95 and a maximum of 129. This 34 FPS range is the largest of any Medium preset, highlighting the GPU’s struggle to maintain consistent frame times at this resolution. The drop from 1440p to 4K at Ultra is 66 FPS (from 143 to 77), which is a 46% reduction, underscoring the pixel count’s impact on the GPU.

GPU Role

The Radeon RX 7900 XTX is a behemoth of a GPU, with 24 GB of GDDR6 memory on a 384-bit bus, providing 960.0 GB/s of bandwidth. Its base clock is 1929 MHz, with a boost clock of 2498 MHz and a game clock of 2365 MHz. The 61.39 TFLOPS of FP32 compute power is what drives the 4K results, where the GPU is fully utilized. The data shows that at 4K Ultra, the average FPS is 77, which is playable but not high-refresh territory. At 4K Low, the average jumps to 128, demonstrating that the GPU has headroom when graphics settings are reduced.

The GPU’s 64th percentile ranking among all GPUs is interesting, given its raw specifications. Its average benchmark score of 19,410 is only 0.4% higher than the NVIDIA GeForce GTX 1060 3 GB, which is a much older card. This suggests that the PassMark G3D score of 31,238 does not fully capture the 7900 XTX’s real-world gaming performance, or that the benchmark suite is not optimized for RDNA 3.0 architecture. In Doom, the GPU’s role is clear: it provides the computational headroom to allow for high frame rates at 1440p and respectable frame rates at 4K, but it is not the primary bottleneck at lower resolutions.

CPU Role

The AMD Ryzen 5 5600 is a 6-core, 12-thread processor based on the Zen 3 architecture, codenamed Vermeer. It has a base clock of 3.50 GHz and a boost clock of 4.40 GHz, with 32 MB of shared L3 cache. Its 65W TDP is low, but its performance is not. The CPU’s single-thread score of 882 in 3dmark is what enables the 341 FPS at 1080p Low, as Doom relies heavily on single-core performance for game logic and draw calls. The multi-thread score of 5,659 for max threads shows that it can handle the game’s multi-threaded rendering tasks, but the single-thread capability is the key differentiator.

The CPU’s nearest rivals in benchmark scores are the Intel Core Ultra 7 258V and AMD Ryzen 5 8500G, all within 0.2% of each other. This means that in synthetic benchmarks, the 5600 is on par with newer processors, but its 74th percentile ranking indicates it is not a top-tier CPU. In Doom, the CPU’s role is to feed the GPU with enough data to maintain high frame rates. At 1080p, it succeeds, but it hits a ceiling around 341 FPS. At 1440p and 4K, the CPU’s workload decreases relative to the GPU, allowing the system to scale more predictably. The data implies that for this game, the Ryzen 5 5600 is a capable partner for the RX 7900 XTX, but it will hold back the GPU at lower resolutions.

Settings Recommendations

The measured data provides clear guidance for optimizing the experience. At 1080p, the Ultra preset delivers 220 FPS, which is more than enough for any high-refresh monitor. However, the Medium preset at 319 FPS offers a significant 45% increase in frame rate with a minimum of 271 FPS, ensuring smooth gameplay. Given that the CPU is the bottleneck, there is little visual benefit to dropping below Medium, as the GPU has ample headroom. The Medium preset is the best balance of visual quality and performance at this resolution.

At 1440p, the High preset at 174 FPS is the sweet spot. It provides a 31 FPS improvement over Ultra, while maintaining a high level of visual fidelity. The Medium preset at 206 FPS is also viable for competitive play, but the visual difference between Medium and High is often noticeable. For a 144Hz monitor, the High preset at 174 FPS is ideal, as it stays above the refresh rate with some headroom. The Ultra preset at 143 FPS is just below the 144Hz threshold, which could lead to screen tearing without V-Sync.

At 4K, the High preset at 94 FPS is the recommended choice. It offers a 17 FPS improvement over Ultra, which is significant, while still providing a high-quality image. The Medium preset at 112 FPS is the best option for a 120Hz display, but the High preset is more visually appealing. The Ultra preset at 77 FPS is playable, but it is not optimal for fast-paced action, as the lower frame rate can impact responsiveness. The data shows that for this combo, the High preset at 4K is the best compromise between visual fidelity and smoothness, ensuring the GPU’s power is used effectively without pushing the CPU to its limits.