Doom

The Intel Core i7-14700KF is a 20-core, 28-thread processor based on the Raptor Lake architecture, with a base clock of 3.40 GHz and a boost clock of 5.60 GHz. For a game like Doom, which is not heavily threaded, the single-core performance is the primary driver of CPU-bound frame rates. The benchmark data shows a strong single-thread Passmark score of 4480, placing this CPU in the 96th percentile of all processors. This high single-core throughput ensures that the CPU can feed frames to the GPU without becoming a bottleneck at lower resolutions. The processor also has 33 MB of shared L3 cache, which helps with game data locality, though the impact is less pronounced in a fast-paced arena shooter than in simulation titles. The CPU’s multi-core capabilities, evidenced by a Cinebench R23 multi-core score of 44557, are largely irrelevant for Doom’s engine, which rarely scales beyond a few threads. The 125W TDP and unlocked multiplier indicate a high-performance part, but the measured FPS in this title will be dictated by how quickly a single core can process game logic and issue draw calls.

The nearest rivals in the CPU benchmark database include the Intel Core i7-14700K with a near-identical average score (70074 vs. 70104, a 0% delta), confirming that the KF variant offers no performance penalty for its lack of integrated graphics. The AMD Ryzen 9 9950X is slightly behind at -0.4% deltaPct, while the Intel Xeon Platinum 8270 is -1.3% behind. These differences are within noise for gaming workloads, meaning the i7-14700KF’s CPU role is to provide a stable, high-frequency platform that never limits the GPU in Doom.

GPU Role

The AMD Radeon RX 6750 XT is built on the RDNA 2.0 architecture with the Navi 22 chip, featuring 2560 shading units and 40 ray accelerators. It operates at a base clock of 2150 MHz and a boost clock of 2600 MHz, with a game clock of 2495 MHz. The GPU has 12 GB of GDDR6 memory on a 192-bit bus, delivering a bandwidth of 432.0 GB/s. This memory configuration is sufficient for Doom’s texture-heavy environments at 1080p and 1440p, but the 4K Ultra preset will stress the memory subsystem and compute units. The GPU’s FP32 performance of 13.31 TFLOPS is the key metric for rasterization in this title; Doom’s Vulkan engine is known for efficient draw call handling, but it still relies heavily on raw pixel throughput. The measured pixel rate of 166.4 GPixel/s and texture rate of 416.0 GTexel/s indicate a mid-range part that can handle high refresh rates at 1440p but will struggle to maintain 60 FPS at 4K with maximum settings.

In the GPU benchmark database, the RX 6750 XT scores in the 79th percentile of all GPUs, with an average benchmark score of 35327. Its nearest rivals are the AMD Radeon RX 5600M (0.2% deltaPct), the NVIDIA GeForce RTX 5070 Ti Mobile (-0.3% deltaPct), and the AMD Radeon 880M (-0.9% deltaPct). Notably, the NVIDIA GeForce RTX 3080 is only -1.3% behind in average score, which suggests that the RX 6750 XT’s raw compute is competitive with that higher-tier card in synthetic tests. However, in Doom, the data shows that the GPU is the primary limiting factor at 4K, where the average FPS drops sharply as settings increase. The GPU’s 12 GB VRAM is not a constraint at any resolution tested, but the 192-bit bus width limits memory bandwidth scaling at higher resolutions.

Resolution Scaling

The measured FPS data reveals a clear scaling pattern across resolutions. At 1080p with Low settings, the combo achieves 239.3 FPS, which indicates a CPU-bound scenario where the GPU is not fully saturated. Moving to Medium settings at 1080p drops the average to 209.7 FPS, and High settings yield 177.8 FPS. The Ultra preset at 1080p produces 146.4 FPS, showing that even at the lowest resolution, the GPU is still capable of high frame rates, but the gap between Low and Ultra is 92.9 FPS, a 38.8% reduction. This suggests that the GPU is beginning to take over the bottleneck as settings increase, but the CPU is still keeping pace above 140 FPS.

At 1440p, the scaling becomes more pronounced. Low settings deliver 153.4 FPS, which is a 35.9% drop from the 1080p Low result. Medium settings yield 135.4 FPS, High settings 113.6 FPS, and Ultra 92.3 FPS. The drop from 1080p to 1440p is roughly consistent across settings, averaging about 30% fewer frames. This indicates that the GPU is now the limiting component, as the resolution increase directly impacts pixel fill rate. At 4K, the scaling becomes severe. Low settings produce 86.9 FPS, Medium 75.5 FPS, High 64.5 FPS, and Ultra 50 FPS. The drop from 1080p Low to 4K Low is 63.7%, while the drop from 1080p Ultra to 4K Ultra is 65.8%. This consistent ~64% reduction across all settings confirms that the RX 6750 XT’s compute and memory bandwidth are the primary constraints at 4K, with the CPU playing a negligible role. The data shows that the transition from 1440p to 4K is the steepest, with an average FPS loss of about 44% across all settings, highlighting the GPU’s inability to sustain high frame rates at that resolution.

How This Combo Ranks

The combination of the Intel Core i7-14700KF and AMD Radeon RX 6750 XT ranks 848th out of 1681 tested combos in Doom. This places it in the upper-middle tier of all combinations, roughly at the 50th percentile. The rank is driven by the GPU’s mid-range standing (79th percentile) and the CPU’s high standing (96th percentile), but the game’s frame rate is ultimately capped by the GPU in most scenarios. The rank of 848 indicates that there are 833 combos that perform better in Doom, which is expected given that the RX 6750 XT is not a high-end part. However, the combo’s performance is still respectable, as it manages to beat the majority of systems that pair weaker CPUs with similar GPUs. The CPU’s high single-core score ensures that the combo does not suffer from CPU-induced stutters or frame drops, which is a common issue with lower-tier processors. The data indicates that this pairing is balanced for 1080p and 1440p gaming, but at 4K, the GPU becomes the clear bottleneck, and the CPU’s advantages are not fully utilized. The combo’s rank would likely improve if the game were more CPU-intensive, but Doom’s engine is well-optimized for GPU throughput.

Measured FPS Breakdown

The measured FPS data provides a detailed picture of performance across all settings and resolutions. At 1920x1080 with Low settings, the combo reaches 239.3 FPS, which is the highest average recorded in the dataset. This figure is close to the theoretical maximum for a 240Hz display, making the combo suitable for competitive play at the lowest settings. Medium settings at 1080p yield 209.7 FPS, still well above 144Hz refresh rates. High settings produce 177.8 FPS, and Ultra settings drop to 146.4 FPS, which remains playable on high-refresh monitors. The spread of 92.9 FPS between Low and Ultra at 1080p shows that the GPU has headroom to handle increased graphical fidelity without dropping below playable thresholds.

At 2560x1440, the results are more demanding. Low settings deliver 153.4 FPS, which is still excellent for most monitors. Medium settings yield 135.4 FPS, High settings 113.6 FPS, and Ultra settings 92.3 FPS. The Ultra result is above 90 FPS, which is smooth for most users, but the gap between Low and Ultra is 61.1 FPS, a 39.8% reduction. This indicates that the GPU is being pushed harder at 1440p, but the combo remains capable of delivering high frame rates. The 1440p data suggests that this is the sweet spot for this configuration, balancing visual quality with performance.

At 3840x2160, the performance drops significantly. Low settings produce 86.9 FPS, which is playable but not ideal for competitive play. Medium settings yield 75.5 FPS, High settings 64.5 FPS, and Ultra settings 50 FPS. The Ultra result is right at the 50 FPS threshold, which may cause noticeable stutters on some displays. The spread between Low and Ultra at 4K is 36.9 FPS, a 42.5% reduction, which is consistent with the 1440p scaling. The data shows that 4K gaming is only viable with Low or Medium settings, and even then, the frame rates are not high enough for 120Hz displays. The measured FPS values confirm that the RX 6750 XT is the limiting factor at 4K, as the CPU’s performance is more than sufficient to support frame rates above 200 FPS in less demanding scenarios. The overall pattern across all resolutions is that the combo excels at 1080p, performs well at 1440p, and struggles at 4K, with the ultra preset being the most demanding option. The average FPS figures are consistent with the GPU’s 79th percentile ranking and its synthetic benchmark scores, which indicate a mid-range part that is best suited for 1080p and 1440p gaming.