Doom

The AMD Ryzen 7 7800X3D paired with the NVIDIA GeForce RTX 3080 Ti ranks 435th out of 1,681 tested combinations in Doom, placing it comfortably within the top quartile of all systems evaluated. This percentile position reflects a configuration that sits in the upper tier of the database, though the sheer number of faster combos indicates that this pairing, while strong, is not at the absolute current-generation for this specific title. The ranking suggests a balanced platform where neither component is dramatically holding the other back; rather, the data points to a system that delivers high performance consistently, with the bottleneck shifting between CPU and GPU depending on the resolution and settings applied.

GPU Role

The NVIDIA GeForce RTX 3080 Ti provides 12 GB of GDDR6X memory across a 384-bit bus, yielding a substantial 912.4 GB/s of bandwidth. In Doom, a game known for its fast-paced texture streaming, this memory subsystem is critical. The GPU’s base clock of 1365 MHz and boost clock of 1665 MHz, combined with 10,240 shading units, allow it to process the game’s geometry and effects efficiently. Its 80 RT cores are present but largely idle in this title, as Doom does not leverage ray tracing; the raw rasterization power from the 112 ROPs and 320 TMUs is what drives frame rates.

The benchmark data shows the GPU scaling predictably with settings. At 4K Ultra, the average FPS falls to 65.1, which suggests the card is being pushed to its limits with maximum image quality demands. Conversely, at 1080p Low, the frame rate jumps to 313.5, revealing that when the GPU load is reduced, the system can produce extremely high output. The GPU’s PassMark G3D score of 26,896 and its 83rd percentile ranking among all GPUs corroborate its strong standing, placing it just 0.5% behind the RTX 3090 in average benchmark scores. This proximity to a higher-tier card indicates that within the tested system, the 3080 Ti is performing near the peak of its capability in Doom’s compute-heavy scenes.

Resolution Scaling

The measured FPS data reveals a clear pattern of diminishing returns as resolution increases, which is typical for a GPU-bound scenario. From 1080p to 1440p at High settings, the average frame rate drops from 234 to 148.1, a reduction of approximately 37%. Scaling from 1440p to 4K at the same settings, the frame rate falls from 148.1 to 79.7, a further drop of about 46%. This steeper decline at higher resolutions points to the GPU becoming the primary limiting factor on the system.

However, the story changes when examining Low settings. At 1080p Low, the system achieves 313.5 FPS, but at 1440p Low it manages 204.4, and at 4K Low it still holds 113. The substantial headroom at lower resolutions suggests that the CPU is capable of feeding the GPU enough data to prevent a bottleneck, but as pixel count rises, the GPU’s shading and memory bandwidth become the ceiling. The difference between 1080p Ultra (188.6) and 4K Ultra (65.1) is stark, a 65% reduction, which underscores that the RTX 3080 Ti’s 12 GB frame buffer and 912.4 GB/s bandwidth are fully engaged at 4K with maximum settings. The data implies that for competitive play at high refresh rates, 1080p or 1440p is the sweet spot, while 4K is reserved for visual fidelity over frame rate.

Measured FPS Breakdown

At 1920x1080, the system demonstrates exceptional performance across all presets. Low settings yield the highest average at 313.5 FPS, followed by Medium at 275.2, High at 234, and Ultra at 188.6. This ordering shows that even the most demanding preset at 1080p stays well above the refresh rate of typical high-end monitors, making the CPU’s 5.00 GHz boost clock and 96 MB of L3 cache more than sufficient for the game’s single-threaded demands.

Moving to 2560x1440, the averages remain high: Low produces 204.4 FPS, Medium 175.9, High 148.1, and Ultra 120. The transition from 1080p to 1440p costs roughly 30-40% performance depending on settings, which aligns with the increased pixel count. Notably, the gap between Medium and High at 1440p is 27.8 FPS, while the gap between High and Ultra is 28.1 FPS, indicating a linear scaling of load with each preset tier.

At 3840x2160, the performance drops are more pronounced. Low settings still deliver 113 FPS, which is playable, but Medium falls to 95.4, High to 79.7, and Ultra to 65.1. The data reveals that at 4K, the GPU is the definitive constraint; the difference between Low and Ultra is nearly 48 FPS, and the system cannot reach the 120+ FPS threshold that lower resolutions achieve. The 4K Ultra result of 65.1 is the lowest measured value, yet it remains smooth by console standards, suggesting that this combo is versatile but not optimized for maximum fidelity at 4K.

Settings Recommendations

For players targeting the highest frame rates, the Low preset at 1080p is the clear choice, delivering 313.5 FPS and maximizing the potential of high-refresh displays. This setting is ideal for competitive scenarios where responsiveness outweighs visual detail. At 1440p, the Low preset at 204.4 FPS is similarly optimal for esports, while Medium at 175.9 offers a better balance of visuals and speed without sacrificing the 144 Hz mark.

The High preset at 1440p, with an average of 148.1 FPS, is the best general recommendation for most users, as it provides enhanced texture quality and lighting effects while maintaining frame rates above most monitor refresh rates. For 4K, the data suggests that High (79.7) or Medium (95.4) is preferable to Ultra (65.1), as the visual jump from Medium to Ultra does not justify the 30 FPS loss. The Ultra preset is best reserved for screenshots or slower-paced exploration, as the 65.1 average at 4K approaches the lower boundary of smooth gameplay.

FAQ

Q: What is the highest average FPS this combo achieves in Doom?

A: The peak measured average is 313.5 FPS, achieved at 1080p with Low settings.

Q: How does this combo compare to the RTX 3090 in synthetic benchmarks?

A: The RTX 3080 Ti’s average benchmark score is 41,224, which is 0.5% lower than the RTX 3090’s 41,441, indicating nearly identical performance in general workloads.

Q: Is the CPU or GPU the bottleneck at 4K Ultra?

A: At 4K Ultra, the average FPS is 65.1, and the steep drop from 1080p Ultra (188.6) suggests the GPU is the limiting component, as the CPU has more than enough headroom.

Q: What is the rank of this combination among all tested in Doom?

A: The combo ranks 435th out of 1,681 tested combinations, placing it in the top 26% of all systems.

Q: Does the RTX 3080 Ti support DirectX 12 Ultimate?

A: Yes, the GPU supports DirectX 12 Ultimate (12_2), along with Vulkan 1.4 and OpenGL 4.6.

Q: What is the L3 cache size on the Ryzen 7 7800X3D?

A: The CPU has 96 MB of shared L3 cache, which is a key factor in its strong gaming performance.

CPU Role

The AMD Ryzen 7 7800X3D features 8 cores and 16 threads, with a base clock of 4.20 GHz and a boost clock of 5.00 GHz. Its architecture, Zen 4 on the Raphael codename, is fabricated on a 5 nm process by TSMC, and the CPU’s 96 MB of shared L3 cache is a standout feature for gaming workloads. This large cache helps reduce memory latency, which is beneficial in Doom’s level-based environments where data is frequently reused.

In synthetic benchmarks, the CPU scores 29,149 in Cinebench R23 multi-core and 4,115 in single-core, placing it in the 87th percentile of all CPUs. Its nearest rival, the Intel Core i7-12700F, has an average score of 31,543, which is just 0.1% higher, indicating that the 7800X3D is essentially on par with that chip in general processing. The CPU’s PassMark multithread score of 34,293 further shows its strength in multithreaded tasks, though Doom is not heavily threaded.

The measured FPS data suggests that at 1080p Low, where the GPU load is light, the CPU is able to push frame rates to 313.5, demonstrating that its single-thread performance is not a limiting factor. The boost clock of 5.00 GHz, combined with the 96 MB L3 cache, ensures that the CPU can feed the GPU efficiently at lower resolutions. At higher resolutions, the CPU’s role diminishes, and the GPU becomes the primary driver of performance, as evidenced by the 4K results. The CPU’s 120 W TDP and support for DDR5 memory with 83.2 GB/s bandwidth contribute to a platform that is well-suited for high-refresh gaming without introducing a processing bottleneck in this title.