Doom

The Intel Core i5-14600KF paired with the AMD Radeon RX 6650 XT produces a fascinating performance profile in Doom, one that clearly delineates the boundaries between CPU and GPU responsibility. The data suggests a system that is exceptionally capable at high refresh rates in 1080p and 1440p, but which begins to show its limitations when pushed to the extreme demands of 4K resolution. This analysis breaks down the measured frames per second (FPS) to understand what this specific combination of components means for gameplay.

Resolution Scaling

The FPS drop from 1080p to 4K is steep and revealing. At 1920x1080 with Ultra settings, the combo achieves an average of 121.8 FPS. Moving to 2560x1440 at the same settings, the average falls to 77 FPS, a significant reduction. The trend continues at 3840x2160, where the average plummets to 42.9 FPS. This scaling pattern indicates that the AMD Radeon RX 6650 XT becomes the primary limiting factor as resolution increases. The GPU's rendering workload grows exponentially with pixel count, and the data shows this bottleneck clearly.

The transition from 1440p to 4K is particularly punishing. At High settings, the drop from 94.1 FPS to 54.1 FPS represents a 40 FPS loss. This is not a gradual decline; it is a cliff. The benchmark results indicate that the RX 6650 XT, with its 8 GB of memory and 128-bit bus, is being saturated at 4K. The CPU, meanwhile, is likely not the constraint here, as the frame rate is tied directly to the GPU's ability to process and output frames. The data implies that for a smooth 4K experience, a more powerful GPU would be necessary, as this combination is clearly designed for high-performance 1080p and solid 1440p gaming.

GPU Role

The AMD Radeon RX 6650 XT is the star of the show in this analysis, and its specifications directly correlate with the observed performance. The GPU boosts up to 2635 MHz and has a game clock of 2410 MHz, which helps explain its strong performance at lower resolutions. Its 8 GB of GDDR6 memory on a 128-bit bus provides a bandwidth of 280.3 GB/s. This is sufficient for 1080p and 1440p, but the data suggests it becomes a limiting factor at 4K, where the larger frame buffer demands more memory and bandwidth than this card can efficiently provide.

The GPU's architecture, RDNA 2.0 on a 7 nm process, is a capable design. Its benchmark scores, such as a Passmark G3D score of 17166, place it in the 72nd percentile of all GPUs. Comparing it to its nearest rivals, the data shows a near-tie with the AMD Radeon RX 6800M, which has a deltaPct of 0. This indicates that in synthetic benchmarks, the RX 6650 XT is on par with that mobile chip. However, in Doom specifically, the measured FPS tells a more nuanced story. The GPU's performance is strong enough to push frame rates well above 120 FPS at 1080p, but the Ultra preset at 4K drags it down to an unplayable average of 42.9 FPS. This shows that while the card has high clock speeds, its memory subsystem and overall compute power are best suited for mainstream resolutions.

CPU Role

The Intel Core i5-14600KF provides a robust foundation for this gaming system. With 14 cores and 20 threads, it is a multi-threaded powerhouse, which is reflected in its Cinebench R23 multicore score of 32889. Its boost clock of 5.30 GHz ensures that single-threaded performance is also excellent, as evidenced by the Cinebench R23 single-core score of 4643. In the context of Doom, a game that is not particularly known for being CPU-intensive, this processor is likely never the bottleneck. The measured FPS at 1080p Low settings reaches 202.3, a number that suggests the CPU can feed frames to the GPU far faster than the GPU can render them at higher settings.

The CPU's percentile ranking of 93 vs all CPUs confirms its high standing. Its nearest rival, the Intel Core i5-14600K, has a deltaPct of 0.4, meaning the 14600KF is essentially identical in performance. The data implies that the i5-14600KF has more than enough headroom to handle Doom's engine, and its role is to ensure that the GPU is not starved of data. The combination of high single-core and multi-core performance means that even if background tasks are running, the game's frame rate is unlikely to suffer. The CPU is a silent partner, providing a stable platform for the GPU to do its work.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of the system's capabilities. At 1920x1080, the performance is exceptional across all presets. The Low preset yields an average of 202.3 FPS, while Medium, High, and Ultra produce 175.6, 149.3, and 121.8 FPS respectively. This shows that even at Ultra settings, the system is well above the 60 FPS threshold for smooth gameplay and is suitable for high-refresh-rate monitors.

Moving to 2560x1440, the performance remains very strong. The Low preset achieves 131.8 FPS, Medium hits 114.3 FPS, and High stays at a commendable 94.1 FPS. The Ultra preset, however, drops to 77 FPS. While still playable, this is the first sign of strain. At 3840x2160, the situation changes dramatically. The Low preset manages 67.9 FPS, which is just above the 60 FPS target. Medium drops to 60.8 FPS, High falls to 54.1 FPS, and Ultra is the lowest at 42.9 FPS. The data clearly shows that 4K gaming with this combo requires sacrificing settings to maintain a playable frame rate.

How This Combo Ranks

In the grand scheme of tested hardware combinations, this specific pairing ranks 1052 out of 1681 combos for Doom. This places it in the lower-middle portion of the database, which is an interesting data point given the strong performance observed at lower resolutions. The ranking suggests that while this combo is excellent for 1080p and good for 1440p, it is not a top-tier performer for 4K, which likely drags down its overall standing in a game benchmark that includes all resolutions.

The rank of 1052 indicates that there are 629 other combinations that perform better overall in this game. This is not a criticism of the i5-14600KF, which is a top-tier CPU, but rather a reflection of the RX 6650 XT's mid-range positioning. The data implies that to climb the rankings, a more powerful GPU would be required. The combo's percentile standing is a direct result of the GPU's performance ceiling, especially at higher resolutions. The CPU's strength is evident, but it cannot compensate for the GPU's limitations when the resolution is pushed to its limits.

FAQ

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

A: The highest measured average FPS is 202.3, which occurs at 1920x1080 with the Low settings preset.

Q: Can this system handle 4K gaming in Doom?

A: Yes, but with compromises. At 3840x2160, the Low preset averages 67.9 FPS, while the High preset averages 54.1 FPS and Ultra averages 42.9 FPS. To maintain a 60 FPS experience, the Low or Medium presets are necessary.

Q: How does the CPU's performance compare to its closest rival?

A: The Intel Core i5-14600KF's average benchmark score is 49367, which is 0.4% higher than the Intel Core i5-14600K's score of 49166. The data shows they are essentially equivalent in performance.

Q: What is the GPU's percentile ranking among all GPUs?

A: The AMD Radeon RX 6650 XT is in the 72nd percentile of all GPUs, based on its average benchmark score.

Q: Is the CPU or GPU the limiting factor at 1080p?

A: The data suggests the GPU is the limiting factor even at 1080p. The frame rates are high, but the CPU is capable of more, as indicated by its strong benchmark scores. The GPU's performance ceiling is what determines the final FPS.

Q: At 1440p, what is the frame rate difference between Low and Ultra settings?

A: At 2560x1440, the Low preset averages 131.8 FPS, while the Ultra preset averages 77 FPS. This is a difference of 54.8 FPS, showing that the Ultra preset demands significantly more from the GPU.

Settings Recommendations

For the best experience, the data points to a clear strategy depending on the target resolution. At 1920x1080, the Ultra preset is the obvious choice, as it provides an average of 121.8 FPS, which is well above the threshold for smooth and responsive gameplay. There is no reason to lower settings at this resolution, as the performance is exceptional even at maximum quality.

At 2560x1440, the High preset offers the best balance, with an average of 94.1 FPS. While Ultra is playable at 77 FPS, the jump to High provides a significant FPS boost with a likely minimal visual difference. This makes High the recommended preset for a high-refresh-rate experience at this resolution.

At 3840x2160, sacrifices are necessary. The Low preset is the only setting that provides a stable 60+ FPS experience, averaging 67.9 FPS. The Medium preset is borderline at 60.8 FPS, but for consistent performance, Low is the safest choice. The data shows that Ultra at 4K is not a viable option, as it averages 42.9 FPS, which is below the 60 FPS target for most players. Therefore, for 4K, the Low preset is recommended to ensure a smooth and consistent frame rate.