Doom

# How This Combo Ranks

The Intel Core i5-13400F paired with the NVIDIA GeForce RTX 3080 Ti lands at rank 455 out of 1,681 tested combos in Doom, placing it in the upper quartile of all configurations. This percentile positioning suggests the pairing sits comfortably above the median experience, though it is not among the top-tier elite setups. The CPU itself holds a percentile rank of 82 against all processors, while the GPU ranks at 83 against all graphics cards, indicating both components are well-matched in their relative standing within their respective categories.

What is striking about this combo's rank is how it translates into actual gameplay. With an average benchmark score of 25,236 for the CPU and 41,224 for the GPU, the system demonstrates balanced capability. The CPU's nearest rival, the Intel Core i7-13620H, scores 25,201 with a delta of only 0.1%, meaning the i5-13400F is essentially on par with that mobile chip. Similarly, the GPU sits just 0.5% behind the RTX 3090's average score of 41,441, showing that the 3080 Ti is punching remarkably close to its bigger sibling. This near-parity with higher-tier components explains why the combo achieves such a respectable rank — neither component bottlenecks the other in a way that would drag the overall standing down.

# GPU Role

The RTX 3080 Ti brings 12 GB of GDDR6X memory across a 384-bit bus, yielding 912.4 GB/s of bandwidth. In Doom, a game originally released in 2016, this memory configuration is more than sufficient — the data shows that even at 4K Ultra settings, the GPU maintains 65.6 FPS average, indicating the memory subsystem is not being saturated. The boost clock of 1665 MHz, combined with 10,240 shading units and 112 ROPs, gives the card a pixel rate of 186.5 GPixel/s and a texture rate of 532.8 GTexel/s. These figures explain why the card scales so well across resolutions.

The GPU's 34.10 TFLOPS of FP32 compute is noteworthy, but what matters more for Doom's performance is how the card handles the game's rendering demands. The data reveals a clear pattern: at 1080p Low, the card pushes 313 FPS, but at 4K Ultra, it drops to 65.6 FPS. This 79% reduction from 1080p Low to 4K Ultra demonstrates that the GPU is the primary driver of performance at higher resolutions. The card's 80 RT cores and 320 tensor cores are largely irrelevant for Doom, which does not heavily utilize ray tracing or DLSS in this title, but they do contribute to the card's overall compute headroom.

# Settings Recommendations

The measured FPS data provides clear guidance on optimal settings. At 1080p, Ultra settings deliver 186.5 FPS, which is well above the 144 Hz refresh rate common on gaming monitors. Medium settings push this to 275 FPS, while Low reaches 313 FPS. Given that the game runs smoothly even at Ultra, the recommendation is straightforward: at 1080p, Ultra settings provide the best visual experience without sacrificing playability.

At 1440p, the situation becomes more nuanced. Ultra delivers 120.9 FPS, which is still excellent for most displays. High settings offer 147.1 FPS, while Medium reaches 177.9 FPS. The data suggests that High settings hit a sweet spot — they provide a 21.7% improvement over Ultra while maintaining visual fidelity that is nearly indistinguishable in fast-paced gameplay. At 4K, Ultra drops to 65.6 FPS, which may be marginal for competitive play. High settings at 4K yield 80.6 FPS, while Medium reaches 94 FPS. For 4K, Medium appears to be the optimal balance, offering a 43.3% improvement over Ultra while still maintaining respectable visual quality.

# FAQ

Q: What is the best resolution for this combo in Doom?

A: The data shows the combo excels at 1440p, where even Ultra settings maintain 120.9 FPS. At 1080p, Ultra reaches 186.5 FPS, but the higher resolution provides a better visual experience without dropping below playable thresholds.

Q: How does the RTX 3080 Ti compare to its nearest rival in this game's context?

A: The GPU sits 0.5% behind the RTX 3090's average benchmark score, with the 3080 Ti scoring 41,224 versus 41,441. This indicates near-identical performance headroom, meaning the 3080 Ti delivers essentially the same experience as its higher-tier counterpart in Doom.

Q: Does the CPU bottleneck the GPU at any resolution?

A: At 1080p Low, the combo achieves 313 FPS, which suggests the CPU can feed the GPU effectively even at very high frame rates. The i5-13400F's 3DMark max threads score of 7,307 indicates sufficient multi-threaded performance to avoid bottlenecking.

Q: What is the frame rate drop from 1080p to 4K at Ultra settings?

A: At 1080p Ultra, the combo delivers 186.5 FPS, while 4K Ultra drops to 65.6 FPS — a reduction of 64.8%. This substantial drop indicates the GPU is the limiting factor at higher resolutions.

Q: Is the 12 GB VRAM sufficient for Doom at 4K?

A: The data shows the card maintains 65.6 FPS at 4K Ultra, indicating 12 GB is adequate for this title. The 912.4 GB/s bandwidth ensures the memory subsystem keeps up with the card's compute capabilities.

Q: How does the CPU's single-thread performance affect Doom?

A: The i5-13400F scores 3,004 in Cinebench R23 single-core, and its 3DMark single-thread score is 960. These results support the high frame rates observed, as Doom benefits from strong single-thread performance for game logic and draw calls.

# Resolution Scaling

The FPS scaling across resolutions reveals a classic GPU-bound pattern. At 1080p Low, the combo achieves 313 FPS. Moving to 1440p Low drops this to 204.6 FPS, a 34.6% reduction. At 4K Low, the frame rate falls to 111 FPS, another 45.7% drop from 1440p. This scaling behavior indicates that the GPU is the limiting component, as the CPU's performance headroom becomes less relevant as resolution increases.

The Ultra settings scaling tells a similar story. From 1080p Ultra at 186.5 FPS to 1440p Ultra at 120.9 FPS, there is a 35.2% reduction. Moving to 4K Ultra at 65.6 FPS represents another 45.7% drop. The consistency of these percentage drops across settings suggests that Doom's rendering workload scales predictably with pixel count, and the RTX 3080 Ti's 912.4 GB/s bandwidth becomes the constraining factor at 4K. The fact that the same percentage reduction appears at both Low and Ultra settings points to the GPU's raw throughput, rather than memory bandwidth, being the primary limiter at higher resolutions.

# CPU Role

The Intel Core i5-13400F features 10 cores and 16 threads based on Raptor Lake architecture, with a base clock of 2.50 GHz and boost clock of 4.60 GHz. Its 20 MB of shared L3 cache provides ample data locality for game workloads, while the 80 KB per-core L1 and 1.25 MB per-core L2 caches support rapid access to frequently used data. The CPU's 3DMark scores show balanced scaling: 1,880 for 2 threads, 3,459 for 4 threads, 5,591 for 8 threads, and 7,307 for max threads. This scaling pattern indicates the processor efficiently utilizes its core count without significant diminishing returns.

In Doom, the CPU's role is to feed the GPU with draw calls and process game logic. The data shows the combo achieves 313 FPS at 1080p Low, which is likely approaching the CPU's practical limit for frame generation. The Cinebench R23 multicore score of 21,279 and single-core score of 3,004 demonstrate strong performance in both threaded and single-threaded workloads. The PassMark multithread score of 25,032 places the CPU at the 82nd percentile, meaning it outperforms roughly 82% of all processors. This headroom ensures that even at 1080p, where the GPU has less work per frame, the CPU can maintain high frame rates without becoming the bottleneck.

# Measured FPS Breakdown

At 1080p, the combo delivers its highest frame rates. Low settings produce 313 FPS, Medium reaches 275 FPS, High achieves 231.6 FPS, and Ultra dips to 186.5 FPS. The progression shows a 28.7% reduction from Low to Ultra, indicating that the GPU handles the increased visual workload at this resolution without major difficulty.

Moving to 1440p, the frame rates remain strong. Low settings yield 204.6 FPS, a 34.6% drop from 1080p Low. Medium settings produce 177.9 FPS, High reaches 147.1 FPS, and Ultra delivers 120.9 FPS. The gap between Low and Ultra at 1440p is 40.9%, wider than at 1080p, suggesting the GPU is beginning to feel the pressure of higher pixel counts.

At 4K, the performance landscape changes significantly. Low settings maintain 111 FPS, Medium drops to 94 FPS, High reaches 80.6 FPS, and Ultra falls to 65.6 FPS. The reduction from 1080p Low to 4K Low is 64.5%, while the reduction from 1080p Ultra to 4K Ultra is 64.8%. This near-identical percentage drop across all settings reinforces the conclusion that the RTX 3080 Ti's raw compute capability, rather than any specific setting, determines the frame rate ceiling at each resolution. The card's 34.10 TFLOPS of FP32 performance and 186.5 GPixel/s pixel rate are the key specifications driving these results.