Doom

The Intel Core i5-14600KF paired with the AMD Radeon RX 580 is a combination that is heavily limited by its graphics card in Doom, a fact that becomes immediately apparent when examining the frame rate scaling across resolutions. The data indicates that this pairing ranks 1569th out of 1681 tested combos in this game, placing it in the bottom 7% of all configurations. This is a GPU-bound scenario where the processor's substantial capabilities are largely held in reserve, as the RX 580 struggles to maintain playable frame rates at higher resolutions, even with the powerful CPU behind it.

Resolution Scaling

The frame rate drop from 1080p to 4K shows a classic pattern of GPU limitation. At 1080p with High settings, the combo produces an average of 75.5 FPS, but this falls to 49.4 FPS at 1440p and then plummets to just 25.7 FPS at 4K. This represents a 66% reduction in performance from 1080p to 4K at High settings, a steep decline that is characteristic of a graphics card hitting its memory bandwidth and pixel throughput limits. The RX 580's 256-bit memory bus and 256.0 GB/s bandwidth are simply not sufficient to feed the massive pixel counts required at 4K.

The scaling pattern becomes even more telling when looking at the lower settings. At Low settings, the frame rate drops from 102.3 FPS at 1080p to 63.5 FPS at 1440p, a 38% decrease, and then to 38.8 FPS at 4K, another 39% decrease. This consistent halving of performance with each resolution step indicates that the GPU is the primary bottleneck at every setting level. If the CPU were the limiting factor, we would expect to see less dramatic scaling at lower resolutions, but the data shows the opposite: the RX 580's rendering capabilities are saturated well before the i5-14600KF's processing power becomes relevant.

At 4K resolution, the frame rates are uniformly poor across all settings, ranging from 21.1 FPS at Ultra to 38.8 FPS at Low. This narrow spread of 17.7 FPS between the lowest and highest settings at 4K suggests that the GPU is so overwhelmed that even reducing graphical fidelity cannot compensate for the sheer number of pixels being rendered. The 4K Ultra figure of 21.1 FPS is borderline unplayable, while even the 4K Low figure of 38.8 FPS falls short of the 60 FPS target most players desire. The data clearly indicates that this resolution is not viable for this combination in Doom, regardless of settings.

CPU Role

The Intel Core i5-14600KF is a formidable processor with 14 cores and 20 threads, capable of boosting up to 5.30 GHz. Its benchmark scores are impressive, with a Cinebench R23 multi-core score of 32889 and a single-core score of 4643, placing it in the 93rd percentile of all CPUs. However, in this specific game and with this specific GPU, those capabilities are almost entirely untapped. The CPU's role in this pairing is to ensure that it never becomes the bottleneck, and the data suggests it succeeds admirably at that task.

The processor's nearest rivals include the Intel Core i5-14600K with an average score of 49166 (0.4% lower), the AMD EPYC 4345P at 49595 (0.5% higher), and the AMD Ryzen 9 5950X at 49062 (0.6% lower). These close margins indicate that the i5-14600KF is performing exactly as expected for its class, delivering top-tier processing power. Yet in Doom, the frame rates are determined almost exclusively by the GPU. At 1080p Low, the combo achieves 102.3 FPS, but the CPU could likely push far higher if paired with a more capable graphics card.

The fact that the frame rates scale so predictably with resolution and settings, without any signs of CPU stuttering or inconsistent frame delivery, confirms that the processor has ample headroom. The i5-14600KF's large 24 MB of shared L3 cache and 5.30 GHz boost clock are more than adequate for Doom's engine, which was released in 2016 and is not particularly demanding on CPU resources. The processor's PassMark multi-thread score of 38697 and single-thread score of 4273 reinforce its position as a high-end desktop part, but in this context, it is essentially waiting for the GPU to catch up.

Settings Recommendations

The measured data provides clear guidance on which settings deliver the best experience for this combination. At 1080p, the sweet spot is High settings, which yields 75.5 FPS. This is comfortably above the 60 FPS threshold and represents a good balance between visual quality and performance. Dropping to Medium settings at 1080p increases the average to 90.2 FPS, a 19.5% improvement, which may be worthwhile for players using high-refresh-rate monitors. However, the jump from High to Low at 1080p, resulting in 102.3 FPS, offers diminishing returns in terms of visual fidelity for the extra 26.8 FPS.

For 1440p, the recommendation shifts to Medium settings, which produces 56.7 FPS. This is just shy of the 60 FPS target, and players may prefer to accept this slight compromise for better visuals. High settings at 1440p drops to 49.4 FPS, which is playable but noticeably less smooth. Low settings at 1440p yields 63.5 FPS, the only setting at this resolution that exceeds 60 FPS, but the visual downgrade is substantial. The data suggests that Medium is the optimal choice for 1440p, offering the closest to smooth gameplay without sacrificing too much graphical quality.

At 4K, the situation is dire across all settings. The best option is Low settings at 38.8 FPS, which is the only configuration that breaks 30 FPS. Ultra settings at 4K produces just 21.1 FPS, making it effectively unplayable. Given these numbers, the recommendation is clear: avoid 4K with this combination entirely. Players who insist on 4K should be prepared for sub-40 FPS experiences, which are not recommended for a fast-paced FPS like Doom. The most sensible approach is to stick with 1080p High or 1440p Medium, depending on the monitor's native resolution.

FAQ

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

A: The data shows 1080p High yields 75.5 FPS, making it the most balanced choice. 1440p Medium at 56.7 FPS is viable for those with higher-resolution monitors, while 4K is not recommended as even Low settings only achieve 38.8 FPS.

Q: How does the RX 580 compare to its closest rivals in synthetic benchmarks?

A: The RX 580 has an average benchmark score of 13559, placing it in the 53rd percentile of all GPUs. It is essentially tied with the NVIDIA GeForce GTX 570 (13564, 0% delta) and GTX 950 (13549, 0.1% delta), while being 1.1% ahead of the AMD Radeon Pro 455 and 1.1% behind the NVIDIA P106-090.

Q: Is the Intel Core i5-14600KF holding back the RX 580 in this game?

A: No, the benchmark results indicate the opposite. The CPU is in the 93rd percentile of all processors, and the frame rates scale consistently with GPU load, showing no signs of CPU bottlenecking at any resolution or setting.

Q: What is the frame rate difference between Ultra and Low settings at 1440p?

A: At 1440p, Ultra settings produce 42.4 FPS while Low settings produce 63.5 FPS, a difference of 21.1 FPS. This represents a 49.8% performance gain from lowering settings from Ultra to Low.

Q: Can this combo achieve 60 FPS at 4K in Doom?

A: No, the data shows the maximum 4K frame rate is 38.8 FPS at Low settings. The RX 580 lacks the bandwidth and pixel throughput to reach 60 FPS at this resolution in Doom.

Q: How does the CPU's performance compare to the AMD Ryzen 9 5950X?

A: The i5-14600KF has an average benchmark score of 49367, which is 0.6% higher than the Ryzen 9 5950X's score of 49062. This places the two processors in a very similar performance tier in synthetic tests.

GPU Role

The AMD Radeon RX 580 is the definitive limiting factor in this pairing for Doom. With 8 GB of GDDR5 memory on a 256-bit bus providing 256.0 GB/s of bandwidth, the card has sufficient capacity for modern textures, but its GCN 4.0 architecture, built on a 14 nm process, is dated. The GPU's boost clock of 1340 MHz and 2304 shading units deliver 6.175 TFLOPS of FP32 performance, which is modest by today's standards. Its PassMark G3D score of 8813 and 53rd percentile ranking among all GPUs confirm its mid-range status.

The RX 580's synthetic benchmark performance shows it is closely matched with older NVIDIA cards like the GTX 570 and GTX 950, with delta percentages of 0% and 0.1% respectively. This places it in a performance tier that was competitive in 2017 but is now considered entry-level. In Doom, this translates to the frame rates observed: capable at 1080p, struggling at 1440p, and inadequate at 4K. The GPU's 32 ROPs and 42.88 GPixel/s pixel rate are the primary constraints at higher resolutions, as the card simply cannot process pixels fast enough to maintain smooth gameplay.

The card's PowerScore metrics, including a PassMark GPU compute score of 3488 and a DirectX 12 score of 43, further illustrate its limitations. While it supports modern APIs like Vulkan 1.3 and DirectX 12 (12_0), its performance in these APIs is not sufficient to overcome its hardware constraints. The 185 W TDP and dual-slot design are typical for the era, but the card's end-of-life production status and 2017 release date indicate it is a legacy part that struggles with modern gaming demands.

Measured FPS Breakdown

The complete dataset provides a comprehensive picture of this combination's performance across all tested configurations. At 1920x1080, the frame rates are 102.3 FPS at Low, 90.2 FPS at Medium, 75.5 FPS at High, and 59.6 FPS at Ultra. This shows a clear progression where each step up in settings costs approximately 15 FPS, with the jump from High to Ultra being the most significant at 15.9 FPS. The 1080p results are the only resolution where all settings produce playable frame rates.

Moving to 2560x1440, the data shows 63.5 FPS at Low, 56.7 FPS at Medium, 49.4 FPS at High, and 42.4 FPS at Ultra. The spread between Low and Ultra is 21.1 FPS, which is larger than at 1080p, indicating that settings have a greater relative impact at this resolution. Only the Low setting exceeds 60 FPS, and the Ultra setting falls below the 45 FPS threshold that many consider the minimum for an enjoyable FPS experience.

At 3840x2160, the results are 38.8 FPS at Low, 30.9 FPS at Medium, 25.7 FPS at High, and 21.1 FPS at Ultra. The gap between Low and Ultra is 17.7 FPS, and even the best case scenario at Low settings barely approaches 40 FPS. These numbers confirm that 4K is not a viable option for this hardware combination in Doom, as every setting produces frame rates that would be considered marginal at best and unplayable at worst for a fast-paced shooter.

How This Combo Ranks

The combination of the Intel Core i5-14600KF and AMD Radeon RX 580 ranks 1569th out of 1681 tested combos in Doom, placing it in the bottom 6.7% of all configurations. This ranking is almost entirely attributable to the GPU, as the CPU is a top-tier part while the GPU is a mid-range component from 2017. The ranking reflects the reality that in a GPU-bound game like Doom, the graphics card's performance ceiling determines the overall experience.

Given that the i5-14600KF sits in the 93rd percentile of all CPUs while the RX 580 sits in the 53rd percentile of all GPUs, this pairing represents a significant imbalance. The CPU is capable of supporting far more powerful graphics cards, and the low ranking is a direct consequence of this mismatch. The data suggests that users with this CPU would see dramatic improvements in Doom by upgrading the GPU, as the processor has ample headroom to support higher frame rates.

The ranking also highlights the age gap between the components. The i5-14600KF was released in 2023, while the RX 580 was released in 2017, a six-year difference that is reflected in their relative performance. The CPU's modern architecture and high clock speeds are wasted on a GPU that cannot keep up, resulting in a combination that performs well below what either component could achieve with a more balanced partner. For players seeking better performance in Doom, the data clearly points to the GPU as the component that needs upgrading.