Doom

The AMD Ryzen 9 5900X and NVIDIA GeForce RTX 3080 Ti combination delivers exceptional performance in Doom, with the data showing a system that is primarily GPU-bound at higher resolutions while retaining enough CPU headroom to maintain very high frame rates even at 1080p. The measured results across four settings presets and three resolutions reveal a clear performance hierarchy that informs both component role analysis and practical settings guidance.

Resolution Scaling

The frame rate drop from 1080p to 4K is steep and consistent across all settings presets, indicating that the GPU is the dominant limiting factor as pixel count increases. At High settings, the average frame rate falls from 232.6 FPS at 1920x1080 to 150.3 FPS at 2560x1440, a reduction of 82.3 FPS, and then further down to 82.6 FPS at 3840x2160. The transition from 1440p to 4K alone costs 67.7 FPS, demonstrating how severely the RTX 3080 Ti’s rendering workload scales with resolution.

The Low preset shows the same pattern but from a higher absolute baseline. Starting at 313.8 FPS at 1080p, the frame rate drops to 201.7 FPS at 1440p and then to 112.9 FPS at 4K. The percentage drop from 1080p to 4K is roughly 64%, which is comparable to the High preset’s 64.5% drop, suggesting that resolution scaling is relatively independent of the quality settings applied. This consistency implies that the GPU’s pixel throughput and memory bandwidth are the primary constraints at 4K, rather than any specific rendering feature tied to a preset.

At 1080p, the frame rates are so high that the CPU begins to play a more significant role. The Ryzen 9 5900X, with its 12 cores and 24 threads, is well equipped to feed the GPU, but the data shows a ceiling effect: even at Low settings, the 313.8 FPS at 1080p is only 55.7% higher than the 201.7 FPS at 1440p, whereas the pixel count difference is 2.25x. This sub-linear scaling indicates that at 1080p, the system is approaching a CPU-bound limit, where the processor’s single-thread performance and memory latency become more influential. The boost clock of 4.80 GHz and the Zen 3 architecture’s strong IPC help here, but the data clearly shows that the GPU is not the sole bottleneck at lower resolutions.

Settings Recommendations

For the best balance of visual quality and frame rate, the High preset at 1440p stands out as the optimal measured configuration. At 150.3 FPS, it delivers a smooth experience well above the 144 Hz refresh rate common on high-end monitors, while the visual uplift over Medium is substantial. The Medium preset at 1440p offers 174.5 FPS, which is 24.2 FPS higher, but the quality reduction may not be worth the marginal gain for most users. At 1080p, High settings produce 232.6 FPS, which is more than sufficient for even the fastest competitive displays, making it the clear choice over Low or Medium at that resolution.

At 4K, the situation changes. The Ultra preset yields only 68.2 FPS, which is below the 70 FPS threshold many consider the minimum for a fluid single-player experience. Dropping to High raises this to 82.6 FPS, a 14.4 FPS improvement, while Medium provides 97.8 FPS. For 4K gaming, the High preset is the recommended sweet spot, as it maintains a comfortable frame rate without the substantial visual downgrade of Medium or Low. The Low preset at 4K produces 112.9 FPS, but this comes at a significant cost to image quality and is unlikely to be preferred by most players.

The data suggests that the RTX 3080 Ti can handle Ultra settings at 1440p with 121.2 FPS, which is a viable option for those prioritizing visual fidelity. However, the jump from High to Ultra at 1440p costs 29.1 FPS, a 19.4% reduction, which may be too steep for some. At 1080p, Ultra delivers 190.8 FPS, which is still excellent, but the High preset’s 232.6 FPS offers more headroom for frame time consistency. Overall, the measured rows point to High as the most universally effective preset across all resolutions, with Medium as a fallback for 4K users who want extra performance.

GPU Role

The NVIDIA GeForce RTX 3080 Ti is the clear performance driver in this combination, particularly at higher resolutions. With 12 GB of GDDR6X memory on a 384-bit bus, the card provides 912.4 GB/s of bandwidth, which is critical for Doom’s texture streaming and high-resolution rendering. The 4K results show that the GPU’s memory subsystem is not the limiting factor, as even the most demanding Ultra preset at 68.2 FPS does not exhibit signs of memory starvation. The card’s 10240 shading units and 112 ROPs are well utilized, with the pixel rate of 186.5 GPixel/s and texture rate of 532.8 GTexel/s providing ample throughput for the game’s fast-paced action.

The GPU’s boost clock of 1665 MHz and base clock of 1365 MHz are modest for a high-end card, but the Ampere architecture’s efficiency compensates. The measured frame rates at 4K High (82.6 FPS) and 4K Ultra (68.2 FPS) indicate that the RTX 3080 Ti is operating near its practical limits in Doom, with the 34.10 TFLOPS of FP32 compute being fully engaged. The card’s 80 RT cores and 320 tensor cores are not heavily utilized in this title, as Doom does not feature ray tracing, but they contribute to the overall die size and power envelope.

Comparing to rivals, the RTX 3080 Ti’s average benchmark score of 41224 places it just 0.5% behind the NVIDIA GeForce RTX 3090, which scores 41441. This near-parity is reflected in the frame rates, where the 3080 Ti’s performance is consistent with a card that is one of the fastest available. The 83rd percentile ranking among all GPUs further underscores its high-end positioning. The 12 GB memory capacity is sufficient for Doom’s requirements, as evidenced by the stable frame rates across all settings, but the card’s 350 W TDP and suggested PSU of 750 W indicate that it is a power-hungry component that requires adequate cooling.

How This Combo Ranks

In the benchmark database, this specific CPU-GPU combination ranks 415th out of 1681 tested combos for Doom, placing it in the top 25% of all configurations. This rank is notable because it reflects the balance between the Ryzen 9 5900X and the RTX 3080 Ti, where neither component is significantly bottlenecking the other. The combo’s position suggests that there are 414 configurations with higher measured performance, likely featuring newer or more expensive GPUs such as the RTX 3090 or higher-tier cards, but the 3080 Ti’s strong showing keeps this combo competitive.

The rank of 415 out of 1681 also indicates that the Ryzen 9 5900X, despite being from the 5000 series with a 90th percentile ranking among all CPUs, is not the primary driver of this combo’s position. The GPU’s 83rd percentile ranking is slightly lower, but the combination still achieves a top-quartile result. This suggests that in Doom, the GPU has a larger impact on overall performance than the CPU, which aligns with the resolution scaling analysis showing GPU-bound behavior at 4K. The combo’s dataIsMeasured field confirms that these results are from actual testing, not estimates, lending credibility to the rank.

The nearest rival combos for the CPU include the AMD EPYC 4245P (deltaPct 0.2%), AMD Ryzen 7 PRO 8845HS (deltaPct -0.7%), and Intel Core i7-13700F (deltaPct 0.9%), all of which have similar average scores. This indicates that the Ryzen 9 5900X’s performance is well-matched to its peers, and the combo rank is more a function of the GPU’s capabilities. For the GPU, the nearest rivals are the RTX 3090 (deltaPct -0.5%), AMD Radeon Pro 5300 (deltaPct -0.9%), and RTX 5070 (deltaPct -1.1%), showing that the 3080 Ti is within a few percentage points of these cards in aggregate benchmarks.

CPU Role

The AMD Ryzen 9 5900X provides substantial processing headroom in this combination, as evidenced by the high frame rates at 1080p where the CPU can become a bottleneck. With 12 cores and 24 threads based on the Zen 3 architecture, the processor offers strong multi-threaded performance, as seen in its Cinebench R23 multicore score of 33150 and 3DMark max threads score of 10075. The 64 MB of L3 cache is particularly beneficial for gaming, as it reduces memory latency and improves data access patterns. The base clock of 3.70 GHz and boost clock of 4.80 GHz are competitive, and the single-thread performance, measured at 4680 in Cinebench R23 single-core, is critical for Doom’s game logic and physics.

However, the data shows that the CPU is not the limiting factor in most scenarios. At 4K Ultra, the frame rate of 68.2 FPS is clearly GPU-bound, as the CPU has ample capacity to feed the GPU with draw calls and game state updates. Even at 1080p High, the 232.6 FPS result indicates that the CPU is still not saturated, as the boost clock and Zen 3 IPC are sufficient to maintain high throughput. The 3DMark single-thread score of 941 and Passmark single-thread score of 3469 confirm that the CPU’s per-core performance is strong, which is essential for a game like Doom that relies heavily on a few main threads.

The CPU’s 90th percentile ranking among all processors, with an average benchmark score of 39453, places it in the top tier of desktop CPUs. Its nearest rivals in aggregate benchmarks include the AMD EPYC 4245P (0.2% higher), AMD Ryzen 7 PRO 8845HS (0.7% lower), Intel Core i7-13700F (0.9% lower), and Intel Core i7-13700 (1.0% lower), indicating that the 5900X is competitive with much newer processors. The 105 W TDP and dual-channel DDR4 memory support with 51.2 GB/s bandwidth are adequate for gaming, though the memory bandwidth is not a constraint in Doom’s measured results. The CPU’s role is to provide a stable foundation, and the benchmark results show that it does so effectively without introducing frame rate inconsistencies or stuttering.