Doom

The Intel Core Ultra 7 270K Plus paired with the AMD Radeon RX 6650 XT delivers a highly capable 1080p experience in Doom, but the data clearly shows that the graphics card becomes the primary limiting factor as resolution increases. At 1080p, the combination achieves excellent frame rates across all settings, with the gap between Low and Ultra settings narrowing significantly at 4K, which indicates that the CPU has ample headroom while the GPU struggles to maintain high output at extreme resolutions.

Resolution Scaling

The measured FPS data reveals a classic GPU-bound scaling pattern as resolution increases from 1080p to 4K. At 1080p with Low settings, the system produces 200 FPS, which drops to 129 FPS at 1440p and further to 70 FPS at 4K. This represents a 65% reduction in performance from 1080p to 4K at Low settings, which is a substantial drop that points directly to the RX 6650 XT's 8 GB GDDR6 memory and 128-bit bus width becoming saturated at higher pixel counts.

Examining the High preset tells a similar story: 147 FPS at 1080p falls to 95 FPS at 1440p and then to 51 FPS at 4K. The 1080p to 1440p transition costs 52 FPS (a 35% reduction), while the 1440p to 4K transition costs another 44 FPS (a 46% reduction). This accelerating decline with each resolution step is a hallmark of GPU limitation rather than CPU limitation, as the Core Ultra 7 270K Plus with its 24 cores and 24 threads is clearly capable of feeding the GPU at lower resolutions.

The Ultra preset shows the most dramatic scaling curve: 120 FPS at 1080p, 78 FPS at 1440p, and only 42 FPS at 4K. The 4K Ultra result of 42 FPS is below the 60 FPS threshold that most users would consider playable for a fast-paced FPS title. The scaling from 1080p to 1440p at Ultra costs 42 FPS (35% reduction), and the 1440p to 4K step costs another 36 FPS (46% reduction), perfectly mirroring the percentage losses seen at High settings.

The data also shows that the gap between Low and Ultra settings shrinks as resolution climbs. At 1080p, the difference between Low and Ultra is 80 FPS (200 vs 120), which narrows to 51 FPS at 1440p (129 vs 78) and then to 28 FPS at 4K (70 vs 42). This compression of performance spread at higher resolutions is definitive evidence that the GPU is the bottleneck, as the additional shading work required by Ultra settings becomes proportionally more expensive relative to the GPU's total capacity.

Settings Recommendations

For 1080p gameplay, the Ultra preset is clearly the best choice from a pure performance standpoint, delivering 120 FPS average. This is well above the 60 FPS standard and provides a smooth experience for competitive play. The Medium preset at 1080p offers 174 FPS with a minimum of 148 FPS and maximum of 200 FPS, which provides a wider safety margin for frame time consistency, but Ultra's 120 FPS is still more than sufficient for most displays.

At 1440p, the recommendation shifts toward High settings, which produce 95 FPS average. The Ultra preset at 1440p drops to 78 FPS, which is playable but leaves less headroom for demanding scenes. The Medium preset at 1440p delivers 113 FPS with a minimum of 96 FPS and maximum of 129 FPS, making it the safest choice for maintaining consistently high frame rates. The data suggests that High strikes the best balance between visual quality and performance at this resolution, offering 95 FPS while avoiding the steep performance penalty of Ultra.

At 4K, the situation becomes more constrained. The High preset produces only 51 FPS, which is below the 60 FPS target for smooth gameplay. The Medium preset at 4K achieves 61 FPS with a minimum of 52 FPS and maximum of 70 FPS, making it the only preset that crosses the 60 FPS threshold at this resolution. The Low preset at 4K reaches 70 FPS, but the visual quality trade-off is substantial. For 4K gaming, Medium is the recommended preset, as it delivers 61 FPS average while maintaining a minimum of 52 FPS, which is acceptable for a single-player title like Doom.

The Ultra preset is not recommended at any resolution above 1080p based on the measured data. At 1440p it drops to 78 FPS and at 4K it falls to 42 FPS, both of which represent significant performance degradation compared to the High or Medium presets at the same resolutions. The performance cost of Ultra settings relative to High is approximately 20% at 1080p (120 vs 147 FPS), 18% at 1440p (78 vs 95 FPS), and 18% at 4K (42 vs 51 FPS), which is a consistent penalty that may not justify the visual improvements.

CPU Role

The Intel Core Ultra 7 270K Plus is a desktop processor from the Core Ultra Series 2, featuring 24 cores and 24 threads with a base clock of 3.70 GHz and a boost clock of 5.50 GHz. This processor is built on a 3 nm process node from TSMC with 17,800 million transistors on a 243 mm² die. It has a 36 MB shared L3 cache and supports dual-channel DDR5 memory with 115.2 GB/s bandwidth, along with PCIe Gen 5 connectivity with 20 lanes.

The CPU's benchmark results indicate substantial processing power. In Cinebench R23, it scores 44,253 in multi-core and 2,439 in single-core tests. PassMark multithread testing yields a score of 68,574, while single-thread performance reaches 5,068. The CPU's percentileVsAllCpus of 96 places it in the top 4% of all processors tested, with an average benchmark score of 93,785. Its nearest rivals include the Intel Xeon 6520P with a deltaPct of 0, the AMD EPYC 4564P at -1.5%, and the AMD EPYC 9175F at -1.9%, showing that it sits in elite company for general processing workloads.

In the context of Doom's measured results, the CPU's role appears to be largely supportive rather than limiting. The fact that frame rates drop by 35-46% when moving from 1080p to 1440p, and then another 46% when moving from 1440p to 4K, indicates that the GPU is the limiting component at higher resolutions. At 1080p, the CPU's strong single-thread performance (2,439 in Cinebench R23 single-core, 5,068 in PassMark single-thread) ensures that it can feed the GPU with draw calls and game logic without creating a bottleneck.

However, the 1080p Low preset result of 200 FPS suggests that even this powerful CPU has practical limits in Doom. The RX 6650 XT, with its 2,048 shading units, 128 texture mapping units, and 64 render output units, is capable of rendering at 200 FPS at Low settings, and the CPU can keep up with that demand. The fact that the CPU's 24 cores and 24 threads do not prevent the GPU from reaching its maximum output at 1080p Low indicates that Doom is not a heavily multi-threaded title in this scenario, and the CPU's high boost clock of 5.50 GHz is likely the more relevant factor than its core count.

How This Combo Ranks

The combination of the Intel Core Ultra 7 270K Plus and AMD Radeon RX 6650 XT ranks 1,886 out of 2,930 tested combos in Doom, placing it in the 36th percentile of all system configurations. This ranking reflects the fact that while the CPU is exceptional (96th percentile), the GPU is only in the 65th percentile of all graphics cards, which drags the overall combo ranking down substantially.

The GPU's nearest rivals in terms of average benchmark score are the NVIDIA Tesla K40m at -0.6% delta, the AMD FirePro D300 at 0.7% delta, and the AMD FirePro W7000 at -0.7% delta. These are professional workstation cards rather than gaming-focused GPUs, which highlights the RX 6650 XT's positioning as a mid-range gaming solution. The GPU's 3DMark Steel Nomad DX12 score of 1,859 and PassMark G3D score of 17,166 provide context for its relative performance in gaming workloads.

Given that the combo ranks 1,886 out of 2,930, the data suggests that this pairing is positioned in the lower-middle tier of all tested configurations. The CPU's 96th percentile performance is largely wasted in this gaming scenario because the GPU cannot translate that processing power into proportionate frame rate gains, particularly at higher resolutions. The 4K results of 42-70 FPS across presets confirm that this combo is not well-suited for 4K gaming, while the 1080p results of 120-200 FPS show that it excels at that resolution.

The disparity between the CPU's elite standing and the GPU's mid-range positioning means that users who primarily play Doom at 1080p will get excellent performance, but those who attempt 4K will see the combo's ranking reflect its GPU limitations. The combo's rank of 1,886 out of 2,930 suggests that approximately 64% of tested combinations outperform it in this game, which is consistent with a system where the graphics card is the weaker link in the chain.

FAQ

Q: What is the best resolution to play Doom with this CPU and GPU combination?

A: Based on the measured FPS data, 1080p is the optimal resolution. At 1080p, even the Ultra preset achieves 120 FPS average, while 1440p and 4K drop to 78 FPS and 42 FPS respectively on the same preset.

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

A: The data shows 4K results range from 42 FPS at Ultra to 70 FPS at Low settings. Only the Medium preset at 4K achieves above 60 FPS, with 61 FPS average and a minimum of 52 FPS, so 4K gaming is possible but requires lowering settings.

Q: Is the CPU or GPU the bottleneck in this system?

A: The resolution scaling data indicates the GPU is the primary bottleneck. Frame rates drop 35-46% when moving from 1080p to 1440p and another 46% from 1440p to 4K, while the CPU's 96th percentile ranking suggests it has ample headroom for this game.

Q: What preset should I use at 1440p for the best experience?

A: The High preset at 1440p delivers 95 FPS average, which is the best balance of visual quality and performance. The Medium preset offers 113 FPS with a minimum of 96 FPS, while Ultra drops to 78 FPS.

Q: How does this combo rank compared to other tested systems?

A: This combination ranks 1,886 out of 2,930 tested combos for Doom. The CPU's 96th percentile performance is offset by the GPU's 65th percentile ranking, resulting in a mid-to-lower tier overall position.

Q: What is the maximum FPS achievable at 1080p with this system?

A: The highest measured result is 200 FPS at 1080p with Low settings. The Medium preset achieves 174 FPS with a maximum of 200 FPS, while High reaches 147 FPS and Ultra reaches 120 FPS.

Measured FPS Breakdown

The complete measured FPS data for Doom with the Intel Core Ultra 7 270K Plus and AMD Radeon RX 6650 XT is as follows:

At 1920x1080 resolution:

• Low settings: 200 FPS average
• Medium settings: 174 FPS average, with a minimum of 148 FPS and maximum of 200 FPS
• High settings: 147 FPS average
• Ultra settings: 120 FPS average

At 2560x1440 resolution:

• Low settings: 129 FPS average
• Medium settings: 113 FPS average, with a minimum of 96 FPS and maximum of 129 FPS
• High settings: 95 FPS average
• Ultra settings: 78 FPS average

At 3840x2160 resolution:

• Low settings: 70 FPS average
• Medium settings: 61 FPS average, with a minimum of 52 FPS and maximum of 70 FPS
• High settings: 51 FPS average
• Ultra settings: 42 FPS average

The data shows a consistent pattern across all settings: each resolution step from 1080p to 1440p to 4K results in a roughly 35-46% reduction in frame rate, regardless of the preset. The Medium preset is the only one that provides minimum FPS data at all three resolutions, with 148 FPS at 1080p, 96 FPS at 1440p, and 52 FPS at 4K. These minimums are important for understanding frame pacing, as they indicate the lowest points during gameplay, and the 4K Medium minimum of 52 FPS suggests occasional dips below the 60 FPS threshold.

For users with high refresh rate displays, the 1080p results are particularly strong, with all presets exceeding 120 FPS. The 1440p results are also respectable, with Low through High all staying above 60 FPS. The 4K results are the weakest, with only Low and Medium presets crossing the 60 FPS threshold on average, and even those dip close to or below 60 FPS during demanding scenes.