Doom

The Intel Core i9-14900K paired with the AMD Radeon RX 7800 XT delivers a commanding performance in Doom, with measured frame rates that scale predictably as resolution and graphical fidelity increase. The data shows a system that is never genuinely CPU-bound at standard gaming resolutions, with the GPU becoming the primary limiting factor only at the most demanding 4K Ultra setting. This combination ranks in the 617th position out of 1681 tested combos, placing it comfortably within the top third of all configurations in the database for this title.

Resolution Scaling

The FPS drop from 1080p to 4K is substantial and reveals the expected shift in bottleneck behavior. At 1080p with Low settings, the combo produces 284.9 FPS, which falls to 179.3 FPS at 1440p and further to 101.2 FPS at 4K. This represents a 64.5% reduction in frame rate from 1080p to 4K at Low settings, indicating that the GPU is being tasked progressively harder as pixel count increases. The pattern is consistent across all settings presets, but the magnitude of the drop becomes more pronounced at higher quality levels. At Ultra settings, the frame rate declines from 170.7 FPS at 1080p to 109.2 FPS at 1440p, then to 58.3 FPS at 4K — a 65.9% total reduction.

The scaling between 1080p and 1440p is notably milder than the jump to 4K. For High settings, the transition from 1080p to 1440p costs 72.6 FPS (from 208.2 to 135.6), while moving from 1440p to 4K costs another 59.9 FPS (from 135.6 to 75.7). This suggests that at 1080p, the i9-14900K with its 24 cores and 32 threads is capable of feeding the GPU sufficiently, and the RX 7800 XT is the limiting component even at this lower resolution. The fact that 4K Ultra drops below 60 FPS at 58.3 FPS indicates that this is the only configuration where the system struggles to maintain smooth gameplay, while all other tested settings at every resolution remain above playable thresholds.

GPU Role

The AMD Radeon RX 7800 XT features 16 GB of GDDR6 memory on a 256-bit bus, delivering 624.1 GB/s of bandwidth. This memory configuration is more than adequate for Doom, a 2016 title that does not demand excessive VRAM capacity. The GPU's boost clock of 2430 MHz and game clock of 2124 MHz contribute to its measured performance, with the card achieving a 76th percentile ranking against all GPUs in the database. The 3840 shading units and 96 ROPs provide substantial rasterization throughput, which is directly relevant to Doom's rendering workload.

The GPU's average benchmark score of 32619 places it in close competition with the AMD FirePro S9300 X2, which scores 32540 with a deltaPct of 0.2, and the NVIDIA P104-100 at 32747 with a deltaPct of -0.4. These are marginal differences, suggesting the RX 7800 XT performs at a consistent level relative to its immediate peers in synthetic testing. In actual game performance, the card's 37.32 TFLOPS of FP32 compute power is more than sufficient for Doom's Vulkan-based engine, which scales well with raw shader throughput. The 4K Ultra result of 58.3 FPS is the only point where the GPU's limits are fully exposed, with all other configurations leaving headroom for higher refresh rates.

How This Combo Ranks

Out of 1681 total combinations tested in Doom, this pairing of the i9-14900K and RX 7800 XT achieves rank 617. This places it in the upper-middle tier of all systems, which makes sense given that the GPU is a mid-range enthusiast card while the CPU is a top-end flagship. The ranking indicates that in this game, the GPU is the more significant determinant of overall performance, as the CPU's high percentile ranking (97th against all CPUs) cannot fully compensate for the GPU's 76th percentile standing.

The data suggests that systems with higher-performing GPUs and similar CPUs would rank above this combo, while those with weaker CPUs but the same GPU would rank below. The i9-14900K's nearest CPU rivals — the AMD EPYC 7413 with an average score of 80041 and a deltaPct of -0.3, and the Intel Core i9-14900KF at 79245 with a deltaPct of 0.7 — show that the CPU is performing essentially at the expected level for its class. The small deltaPct values (all under 1%) confirm that the CPU is not introducing any unusual bottleneck or advantage in this title, allowing the GPU to express its full capability.

Settings Recommendations

For the best measured experience at 4K, High settings at 75.7 FPS provide a strong balance between visual quality and smoothness, comfortably exceeding the 60 FPS threshold. Ultra settings at 4K drop to 58.3 FPS, which is below ideal for fast-paced FPS gameplay, so High is the recommended ceiling at this resolution. At 1440p, High settings at 135.6 FPS are excellent, but Medium at 161.2 FPS or even Low at 179.3 FPS offer higher frame rates for competitive play. The data shows that Ultra at 1440p still delivers 109.2 FPS, making it a viable choice for those prioritizing image quality over maximum refresh.

At 1080p, all settings presets exceed 170 FPS, with Low reaching 284.9 FPS and Medium at 243.3 FPS. For esports-style play on high refresh rate monitors, Low or Medium settings at 1080p are the clear choice, as the frame rate headroom is substantial. High at 208.2 FPS is also excellent and likely indistinguishable from Medium in most scenes. The Ultra preset at 1080p yields 170.7 FPS, which remains highly playable and is the best option for visual fidelity without sacrificing competitive performance. Overall, the sweet spot for this combo is 1440p High, which delivers 135.6 FPS with strong image quality and ample margin above the 60 FPS baseline.

Measured FPS Breakdown

At 1920x1080, the measured average FPS values are 284.9 for Low, 243.3 for Medium, 208.2 for High, and 170.7 for Ultra. The progression from Low to Ultra shows a 40.1% decrease in performance, with each settings tier costing roughly 20-35 FPS. The 1080p results demonstrate that this combo is capable of driving high refresh rate displays even at maximum quality, with no configuration falling below 170 FPS.

At 2560x1440, the measured averages are 179.3 for Low, 161.2 for Medium, 135.6 for High, and 109.2 for Ultra. The drop from 1080p to 1440p at each setting is consistent, ranging from 37.0% at Low to 36.0% at Ultra. This resolution represents the practical limit for Ultra settings at above 100 FPS, making it a strong recommendation for users with 144Hz monitors who want maximum visual detail.

At 3840x2160, the measured averages are 101.2 for Low, 88.2 for Medium, 75.7 for High, and 58.3 for Ultra. The 4K results show the GPU hitting its performance ceiling, with Ultra dipping below 60 FPS. The gap between Low and Ultra at 4K is 42.4%, slightly larger than at lower resolutions, indicating that the card's 16 GB VRAM and memory bandwidth of 624.1 GB/s are sufficient but the compute resources become strained at higher settings.

CPU Role

The Intel Core i9-14900K is a 24-core, 32-thread processor based on the Raptor Lake architecture, with a base clock of 3.20 GHz and a boost clock of 6.00 GHz. Its 36 MB of shared L3 cache and 2 MB per-core L2 cache provide ample data locality for game workloads. In Doom, which is not a heavily multithreaded title, the CPU's single-core performance is more relevant than its multicore capabilities. The CPU's Cinebench R23 single-core score of 7040 and multicore score of 49872 confirm its top-tier standing, with a 97th percentile ranking against all CPUs in the database.

The measured FPS data indicates that the i9-14900K is not the limiting factor at any resolution or settings combination. At 1080p Low, the 284.9 FPS result is likely near the engine's internal limits, and even at 4K Ultra, the CPU has sufficient headroom to feed the GPU. The CPU's nearest rivals — the AMD EPYC 7413, Intel Core i9-14900KF, and Intel Core Ultra 7 265KF — all show deltaPct values under 1% in average benchmark scores, confirming that the i9-14900K is performing at the expected level for its architecture. The 125W TDP and support for both DDR4 and DDR5 memory give builders flexibility, though the measured results do not indicate any memory bandwidth constraint in this game. The CPU's 6.00 GHz boost clock is a key asset for Doom's single-threaded rendering tasks, ensuring that frame pacing remains consistent even in complex scenes.