Doom

The Intel Core i5-12600KF paired with the AMD Radeon RX 7900 XT delivers a masterclass in high-refresh-rate gaming in Doom, with the data showing a clear shift in system bottleneck as resolution climbs. At 1920x1080, the combination produces extraordinary frame rates that indicate the CPU is the primary limiting factor. The average frame rate at Low settings reaches 337.1 FPS, which is a staggering figure that drops to 293.4 FPS at Medium, 246.9 FPS at High, and 200.7 FPS at Ultra. This scaling pattern, where the frame rate drops by roughly 40% from Low to Ultra at 1080p, suggests that the processor is working at its limits to feed the GPU. Moving to 2560x1440, the frame rates remain exceptionally high, with Low settings producing 218.2 FPS, Medium at 193.2 FPS, High at 159.4 FPS, and Ultra at 133.9 FPS. The transition to 3840x2160 reveals the GPU beginning to take on a more significant role, yet the numbers still favor high refresh rates: Low settings yield 117.9 FPS, Medium produces 106.1 FPS, High delivers 84.6 FPS, and Ultra maintains a playable 70.4 FPS. The scaling from 1080p to 4K shows a 65% reduction in frame rate at Low settings, from 337.1 FPS down to 117.9 FPS, which is a substantial drop that underscores the heavy lifting the graphics card performs at higher resolutions.

Resolution Scaling

The resolution scaling behavior in Doom for this combination reveals a system that is exceptionally well-balanced for high-refresh-rate displays, though the bottleneck shifts predictably as pixel count increases. At 1920x1080, the frame rates are so high that the CPU becomes the clear limiting component, as evidenced by the relatively modest gap between settings. The difference between Low and Ultra at 1080p is 136.4 FPS, which is a significant spread, but the absolute numbers are so high that they exceed the refresh rate of virtually all mainstream monitors. At 2560x1440, the frame rates remain in triple digits across all settings, with the spread between Low and Ultra widening to 84.3 FPS. This suggests that the GPU is starting to exert more influence, but the CPU is still capable of maintaining high throughput. The most telling data comes at 3840x2160, where the frame rate drops below 100 FPS for the first time at Ultra settings, hitting 70.4 FPS. The 4K results show a tighter grouping between settings, with a spread of 47.5 FPS from Low to Ultra, indicating that the graphics card is now the dominant factor. The data suggests that for competitive play at 1080p or 1440p, this combination will never be GPU-bound in Doom, but at 4K, the RX 7900 XT's capabilities are more thoroughly exercised.

GPU Role

The AMD Radeon RX 7900 XT plays a pivotal role in this combination's Doom performance, particularly at higher resolutions and quality presets. The GPU's 20 GB of GDDR6 memory on a 320-bit bus provides 800.0 GB/s of bandwidth, which is ample for Doom's texture-heavy environments at 4K. The memory clock runs at 2500 MHz, with a game clock of 2025 MHz and a boost clock of 2394 MHz, figures that help sustain high frame rates in fast-paced scenes. The data shows that the GPU's performance ceiling is not reached until 4K Ultra, where it produces 70.4 FPS. The scaling from High to Ultra at 4K shows a 14.2 FPS drop, which is a 16.8% reduction, indicating that the Ultra preset's additional effects place a meaningful load on the GPU. In contrast, the jump from Low to Medium at 4K yields an 11.8 FPS difference, suggesting that the lower presets are less demanding on the GPU's compute resources. The GPU's RDNA 3.0 architecture, built on a 5 nm process from TSMC, contains 57,700 million transistors and delivers 51.48 TFLOPS of FP32 performance. These specifications translate directly into the strong 4K results observed, where the GPU maintains playable frame rates even at the highest quality settings.

How This Combo Ranks

Within the database of tested combinations, this pairing of the Intel Core i5-12600KF and AMD Radeon RX 7900 XT achieves a combo rank of 379 out of 1681 combinations in Doom. This places the setup in the top 22.5% of all tested configurations, which is a strong showing for a mid-range processor paired with a high-end graphics card. The rank reflects the balanced nature of the pairing, as the CPU's performance is sufficient to avoid bottlenecking the GPU at most resolutions, while the GPU provides the raw horsepower for high frame rates. The CPU itself sits at the 84th percentile among all processors, with an average benchmark score of 27827, placing it in close proximity to the Intel Core i9-10900K, which scores 27829, a negligible 0% difference. The GPU is at the 82nd percentile among all graphics cards, with an average benchmark score of 38358, putting it in the same performance tier as the NVIDIA GeForce RTX 5080 Mobile, which scores 38349. This combination of high-percentile components results in a system that performs well above average in Doom, though it does not crack the top tier of configurations. The rank of 379 out of 1681 suggests that while there are many faster combinations, this setup offers a compelling balance of CPU and GPU performance that translates into excellent real-world frame rates in this title.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of how this combination performs across different resolutions and quality settings. At 1920x1080, the average frame rates are exceptional across the board: Low settings produce 337.1 FPS, Medium delivers 293.4 FPS, High achieves 246.9 FPS, and Ultra maintains 200.7 FPS. These numbers indicate that the system is heavily CPU-bound at this resolution, as the GPU is capable of far higher frame rates than the processor can feed it. At 2560x1440, the frame rates remain impressive, with Low settings at 218.2 FPS, Medium at 193.2 FPS, High at 159.4 FPS, and Ultra at 133.9 FPS. The 1440p results show a more balanced workload between CPU and GPU, with the frame rates still exceeding the refresh rate of most high-refresh monitors. At 3840x2160, the GPU takes over as the primary bottleneck, with Low settings producing 117.9 FPS, Medium at 106.1 FPS, High at 84.6 FPS, and Ultra at 70.4 FPS. The 4K results demonstrate that the RX 7900 XT is capable of delivering smooth gameplay even at the highest quality settings, though the frame rates drop below the 100 FPS threshold at High and Ultra. The data shows a consistent pattern of frame rate reduction as quality settings increase, with the largest absolute drops occurring at 1080p due to the CPU limitation.

CPU Role

The Intel Core i5-12600KF plays a critical role in this combination's Doom performance, particularly at lower resolutions where the CPU becomes the limiting factor. This processor features 10 cores and 16 threads, with a base clock of 3.70 GHz and a boost clock of 4.90 GHz, making it a capable performer for gaming workloads. The Alder Lake architecture, built on Intel's 10 nm process, includes 20 MB of shared L3 cache, which helps reduce memory latency in game scenarios. The CPU's performance in synthetic benchmarks reflects its gaming capability: it scores 7956 in 3dmark_16_threads, 23444 in cinebench_r23_multicore, and 3309 in cinebench_r23_singlecore. These scores indicate strong multi-threaded performance that can handle the demands of modern games, while the single-thread performance is crucial for Doom's game engine, which relies heavily on a few fast cores. The data shows that at 1080p, the CPU is the bottleneck, as the frame rates are so high that the GPU cannot be fully utilized. This is evidenced by the fact that the frame rate at 1080p Low (337.1 FPS) is significantly higher than at 1440p Low (218.2 FPS), indicating that the GPU is the limiting factor at higher resolutions. The CPU's boost clock of 4.90 GHz is particularly important for maintaining high frame rates in Doom, as the game's single-threaded nature benefits from high clock speeds. The 125 W TDP suggests that the CPU can sustain its boost clocks under gaming loads, though it may require adequate cooling to maintain peak performance over extended sessions. Overall, the i5-12600KF provides sufficient performance to avoid bottlenecking the RX 7900 XT at 1440p and 4K, while being the limiting factor at 1080p due to the GPU's immense capability.