Doom

The data for Doom with the AMD Ryzen 5 5600GT and NVIDIA GeForce RTX 3080 shows a system that is heavily GPU-bound at higher resolutions, yet reveals a surprising CPU bottleneck at 1080p. The measured frames per second across the three tested resolutions and four quality presets provide a clear picture of where each component’s limits lie and how the pairing behaves under varying loads.

Resolution Scaling

The transition from 1080p to 1440p and then to 4K produces a predictable, yet steep, decline in performance that points directly to the graphics card as the limiting factor. At 1080p with Low settings, the combo achieves an average of 301.7 FPS. Moving to 1440p Low drops this to 195.1 FPS, a reduction of 106.6 FPS, and then to 108 FPS at 4K Low, another 87.1 FPS drop. This pattern indicates that as pixel count increases, the rendering load on the RTX 3080 scales almost linearly, with the CPU's 6-core, 12-thread configuration providing ample headroom to feed the GPU at lower resolutions.

However, the scaling behavior changes when examining the highest quality preset. At 1080p Ultra, the average is 178.6 FPS. At 1440p Ultra, it falls to 115.4 FPS, and at 4K Ultra, it plummets to 60.6 FPS. The percentage drop from 1080p to 1440p is roughly 35%, which is significant but not as dramatic as the 47% drop observed from 1440p to 4K. This nonlinearity suggests that at 4K Ultra, the system is approaching the absolute limits of the GPU's computational throughput, and the frame rate is constrained by the sheer volume of pixel and shader work. The data shows that the RTX 3080's 10 GB of GDDR6X memory and 760.3 GB/s bandwidth are sufficient for this title, as the performance degradation is consistent with raw GPU compute scaling rather than memory capacity throttling.

GPU Role

The NVIDIA GeForce RTX 3080, built on the Ampere architecture with a GA102 chip, is the dominant component in this pairing for Doom. Its base clock of 1440 MHz and boost clock of 1710 MHz, combined with 8704 shading units, provide the raw compute necessary for high frame rates. The GPU’s role becomes increasingly critical as resolution and settings increase. At 4K Ultra, the 60.6 FPS average is a direct reflection of the card's limits; the benchmark results indicate that the GPU is the sole bottleneck in this scenario, with the CPU having no influence on the final output.

The card’s 10 GB memory buffer is a point of interest. Even at 4K Ultra, the performance does not show signs of a memory-related cliff, which would manifest as stuttering or severe frame drops. Instead, the average FPS of 60.6 suggests a steady, if demanding, workload. The GPU’s pixel rate of 164.2 GPixel/s and texture rate of 465.1 GTexel/s are the physical constraints that determine these results. In contrast, at 1080p Low, the GPU is underutilized, as evidenced by the 301.7 FPS average; this frame rate is likely limited by the CPU's single-thread performance or the game's engine logic, rather than the GPU's ability to draw frames. The RTX 3080’s percentile rank of 80 versus all GPUs underscores its high-end positioning, but the data shows that even a top-tier card can be the limiting factor when pushed to 4K with maximum settings.

How This Combo Ranks

Within the database of tested combinations, this specific pairing of the AMD Ryzen 5 5600GT and NVIDIA GeForce RTX 3080 achieves a combo rank of 518 out of 1681 combos for Doom. This places it in the upper third of all tested systems, which is a strong showing for a mid-range CPU paired with a high-end GPU. The ranking reflects that the combination is well-balanced for this particular title, leveraging the GPU’s strength without the CPU becoming a significant liability at most settings.

However, the rank is not at the very top, indicating that there are superior combinations. The CPU’s nearest rivals provide context for its performance ceiling. The AMD Ryzen 5 5600X has an average score of 20680, a delta of 0.3% relative to the 5600GT, meaning the 5600GT is actually 0.3% faster in synthetic benchmarks. The Intel Core i7-10700 is essentially tied with a 0% delta, while the Intel Core i5-12490F is 0.3% slower. These marginal differences in CPU compute do not translate into significant FPS differences in Doom, reinforcing that the GPU is the primary driver of the combo’s rank. The 5600GT’s 78th percentile ranking among all CPUs indicates it is a competent processor, but the 3080’s 80th percentile ranking shows it is the stronger half of this duo, and the game’s performance reflects this hierarchy.

Measured FPS Breakdown

The measured FPS data provides a comprehensive look at the system's behavior across all twelve tested configurations. At 1920x1080, the results are as follows: Low settings yield an average of 301.7 FPS, Medium drops to 263.8 FPS, High further reduces to 222.2 FPS, and Ultra bottoms out at 178.6 FPS. The spread from Low to Ultra is 123.1 FPS, showing that the graphics settings have a massive impact at this resolution. The system is clearly capable of delivering extremely high refresh rates, making it suitable for competitive play where frame rate is paramount.

At 2560x1440, the averages are 195.1 FPS for Low, 171.9 FPS for Medium, 140.8 FPS for High, and 115.4 FPS for Ultra. The performance gap between Low and Ultra narrows to 79.7 FPS, as the GPU becomes more saturated. This resolution still offers excellent playability, with even the Ultra preset maintaining an average above 115 FPS, which is smooth for most users. The transition from 1080p to 1440p reduces the Low setting performance by 106.6 FPS, a 35% decrease, while the Ultra setting only drops by 63.2 FPS, a 35% decrease as well, showing a consistent scaling factor across settings.

At 3840x2160, the system begins to show its limitations. Low settings average 108 FPS, Medium averages 93.6 FPS, High averages 80.4 FPS, and Ultra averages 60.6 FPS. The difference between Low and Ultra is now 47.4 FPS. The 4K Ultra result of 60.6 FPS is precisely at the threshold of what is considered acceptable for a smooth experience, but it is the only configuration in the entire dataset that dips below 80 FPS. This indicates that while the RTX 3080 is powerful, 4K Ultra is its breaking point for this title, requiring users to make a choice between resolution and visual fidelity.

Settings Recommendations

Based on the measured rows, the optimal balance of visual quality and performance for this combo depends heavily on the target display resolution. For 1080p displays, the High preset at 222.2 FPS is the recommended baseline, as it provides a substantial visual upgrade over Medium while still retaining a frame rate far above the refresh rate of most monitors. The Ultra preset at 178.6 FPS remains highly playable and is the best choice for those prioritizing image quality, as the performance cost is only 43.6 FPS compared to High.

For 1440p, the High preset at 140.8 FPS offers the best experience, delivering a smooth frame rate that exceeds the 120 Hz threshold for many high-refresh panels. The Ultra preset at 115.4 FPS is also viable, but the 25.4 FPS drop from High is noticeable, and the visual difference may not justify it for all users. The Medium preset at 171.9 FPS is the choice for those who want maximum smoothness, but it sacrifices significant detail. The data suggests that High is the sweet spot at 1440p, balancing the GPU’s workload with the CPU’s capability.

At 4K, the situation is more constrained. The Ultra preset at 60.6 FPS is only suitable for those with a 60 Hz display who refuse to compromise on settings. The High preset at 80.4 FPS is the recommended choice for 4K, as it provides a much more comfortable margin above 60 FPS while still delivering high-quality visuals. The Low preset at 108 FPS is unnecessary, as the Medium preset at 93.6 FPS offers a better visual experience with a still-very-high frame rate. For most users, the High preset at 4K is the optimal setting, as it leverages the RTX 3080’s power without pushing the system into a territory where frame rate consistency becomes a concern. The data clearly shows that for this game, the High preset is the most versatile choice across all resolutions, offering the best compromise between the GPU’s raw power and the CPU’s ability to maintain high frame rates.