Doom

The Intel Core Ultra 7 270K Plus paired with the AMD Radeon RX 6800 XT delivers a fascinating look at how a high-end CPU and a previous-generation flagship GPU handle id Software’s 2016 classic, Doom. This combination sits in the 866th position out of 2930 tested combos for this game, placing it comfortably in the upper third of all systems evaluated. The data reveals a system that is overwhelmingly GPU-bound at higher resolutions, but which still manages to push frame rates that exceed the refresh rates of most displays, even at 4K with maximum settings.

Resolution Scaling

The measured FPS data shows a clear and predictable pattern as resolution increases, but the magnitude of the performance drop tells a story about where the bottleneck lies. At 1080p with High settings, the combo achieves 215 FPS. Moving to 1440p at the same High preset, the average drops to 139 FPS, a decrease of 76 FPS or roughly 35%. The jump to 2160p at High settings yields an average of 75 FPS, which is another 64 FPS reduction, or about 46% from the 1440p figure. This progressive decline is characteristic of a system where the GPU is becoming the limiting factor, as the pixel throughput demand grows exponentially with resolution.

The scaling from 1440p to 4K is particularly steep. At Medium settings, the average FPS goes from 165 at 1440p down to 89 at 4K, a loss of 76 FPS. At Ultra settings, the drop is from 114 FPS at 1440p to 62 FPS at 4K, a decrease of 52 FPS. What is striking is the relative consistency of these drops across different quality presets. The percentage reduction from 1440p to 4K is roughly 46% for High (139 to 75), 46% for Medium (165 to 89), and 45% for Ultra (114 to 62). This uniformity strongly suggests that the scaling is purely a function of resolution and not of the specific graphical features being toggled by the settings presets.

The data implies that the Intel Core Ultra 7 270K Plus, with its 24 cores and 24 threads, is never the primary constraint in this game. At 1080p Low settings, the system reaches an average of 292 FPS, which is likely near the practical ceiling for the engine’s draw call processing on any CPU. The fact that 4K Ultra still manages 62 FPS, which is only a 47% drop from the 1080p Low result, indicates that the GPU is being tasked heavily but not completely overwhelmed. A system that was CPU-limited would show much smaller FPS differences between 1080p and 1440p, as the CPU would be the same workload regardless of resolution. Instead, the data shows large, consistent drops, confirming that the RX 6800 XT is the component determining the frame rate ceiling at every resolution above 1080p Low.

How This Combo Ranks

With a combo rank of 866 out of 2930, this pairing sits in the 70th percentile of all tested combinations for Doom. This is a strong result, but not a top-tier one, which makes sense given the GPU’s age relative to the CPU. The RX 6800 XT was released in late 2020, while the Core Ultra 7 270K Plus is a much newer part from 2026. The ranking suggests that many newer GPU combinations can surpass this pairing, but it also shows that the RX 6800 XT still holds its own against a modern high-end CPU.

The CPU itself ranks in the 96th percentile against all CPUs, with an average benchmark score of 93785. Its nearest rivals include the Intel Xeon 6520P with a score of 93786 (a 0% delta), the AMD EPYC 4564P with 95183 (-1.5% delta), the AMD EPYC 9175F with 95615 (-1.9% delta), and the AMD EPYC 4565P with 95764 (-2.1% delta). This places the Core Ultra 7 270K Plus in a cluster of very high-performance server and workstation chips, all within roughly 2% of each other. The GPU, by contrast, ranks in the 85th percentile against all GPUs, with an average score of 48477. Its nearest rivals are the NVIDIA RTX A1000 Mobile with 47743 (1.5% delta), the Intel Arc A550M with 49737 (-2.5% delta), the NVIDIA GeForce RTX 5070 Ti with 49957 (-3% delta), and the AMD Radeon RX Vega 64 with 50001 (-3% delta).

The discrepancy between the CPU’s 96th percentile ranking and the combo’s 70th percentile ranking in Doom highlights the game’s relative insensitivity to CPU power. A top-tier CPU like the Core Ultra 7 270K Plus cannot boost the combo beyond what the GPU can deliver. Conversely, the GPU’s 85th percentile ranking is closer to the combo’s overall position, indicating that the RX 6800 XT is the more influential component in determining this game’s performance. The data suggests that if a user were to pair this CPU with a newer, faster GPU, the combo rank would likely improve substantially, as the CPU has significant headroom that is currently unused in this specific title.

GPU Role

The AMD Radeon RX 6800 XT is built on the RDNA 2.0 architecture and features the Navi 21 chip, fabricated on a 7 nm process with 26,800 million transistors on a 520 mm² die. It has 4608 shading units, 288 texture mapping units, and 128 render output units, along with 72 ray tracing cores. The card’s memory configuration consists of 16 GB of GDDR6 on a 256-bit bus, providing a bandwidth of 512.0 GB/s. The memory clock is listed as 2000 MHz, with a 16 Gbps effective data rate.

The clock speeds for this GPU are notable. The base clock is 1825 MHz, the game clock is 2015 MHz, and the boost clock reaches 2250 MHz. The difference between the game clock and boost clock is 235 MHz, which indicates that the card is designed to run close to its maximum frequency under sustained gaming loads. In Doom, which is known for being well-optimized and not overly demanding on memory bandwidth, these clocks contribute to the observed frame rates. The pixel rate is 288.0 GPixel/s, and the texture rate is 648.0 GTexel/s, which are substantial figures that support the high FPS numbers seen at lower resolutions.

The 16 GB of VRAM is ample for Doom, even at 4K with Ultra settings. The game’s texture and geometry demands are not excessive, so the frame rate is more likely limited by raw compute throughput and fill rate rather than memory capacity. The fact that 4K Ultra yields 62 FPS while 4K High yields 75 FPS suggests that the Ultra preset introduces shading and post-processing effects that increase the per-pixel workload, rather than pushing the system into a VRAM capacity wall. The 512.0 GB/s of bandwidth is sufficient to feed the GPU’s processing units, as evidenced by the smooth scaling between presets. The benchmark results for this GPU show a Passmark G3D score of 24980 and a Passmark DirectX 12 score of 100, which are consistent with its position in the 85th percentile of all GPUs.

Measured FPS Breakdown

The measured FPS data provides a complete picture of performance across three resolutions and four settings presets. At 1920x1080, the Low preset yields an average of 292 FPS, which is the highest frame rate recorded for this combo. The Medium preset delivers 254 FPS with a minimum of 216 FPS and a maximum of 292 FPS. High settings produce 215 FPS on average, while Ultra drops to 176 FPS. These numbers indicate that at 1080p, the system is capable of driving high-refresh-rate monitors without issue, even at the most demanding settings.

Moving to 2560x1440, the Low preset still achieves 189 FPS on average. Medium settings yield 165 FPS, with a minimum of 140 FPS and a maximum of 189 FPS. High settings produce 139 FPS, and Ultra drops to 114 FPS. The drop from 1080p to 1440p is significant, but the system remains highly playable at all settings. The minimum FPS recorded at 1440p Medium is 140, which is still above the 120 FPS threshold that many gamers consider smooth.

At 3840x2160, the performance becomes more modest. The Low preset averages 102 FPS, which is still a very playable frame rate for 4K. Medium settings yield 89 FPS with a minimum of 76 FPS and a maximum of 103 FPS. High settings drop to 75 FPS, and Ultra falls to 62 FPS. The minimum FPS of 76 at 4K Medium is noteworthy, as it indicates that the system can maintain a frame rate above 60 FPS even during demanding scenes. The Ultra preset’s 62 FPS average is right at the edge of what is considered smooth for most users, and the lack of a recorded minimum FPS for this preset leaves some uncertainty about potential dips.

The data also reveals a consistent relationship between settings presets. At each resolution, the difference between Low and Ultra is substantial. At 1080p, the gap is 116 FPS (292 to 176). At 1440p, the gap is 75 FPS (189 to 114). At 4K, the gap is 40 FPS (102 to 62). This narrowing gap at higher resolutions further confirms that the GPU is the limiting factor, as the relative cost of Ultra settings becomes less impactful when the resolution is already placing a heavy load on the graphics card.

FAQ

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

A: The highest recorded average FPS is 292, achieved at 1920x1080 with Low settings.

Q: Is this combo capable of maintaining 60 FPS at 4K with Ultra settings?

A: Yes, the average FPS at 3840x2160 with Ultra settings is 62, which is above the 60 FPS threshold.

Q: How much faster is 1080p compared to 4K at High settings?

A: At High settings, 1080p yields 215 FPS, while 4K yields 75 FPS, making 1080p approximately 2.87 times faster.

Q: What is the minimum FPS recorded at 1440p Medium settings?

A: The minimum FPS recorded at 2560x1440 with Medium settings is 140.

Q: Does the GPU’s 16 GB VRAM cause any performance limitations in this game?

A: The data does not indicate VRAM capacity as a limiting factor, as the frame rates scale consistently with resolution and settings without any sudden drops that would suggest memory pressure.

Q: How does this combo’s ranking compare to its component rankings?

A: The combo ranks 866th out of 2930 for this game, while the CPU ranks in the 96th percentile and the GPU in the 85th percentile. This suggests the GPU is the more limiting factor in this specific title.

Settings Recommendations

Based on the measured FPS data, the optimal settings preset depends on the user’s resolution and target frame rate. For 1080p users with high-refresh-rate monitors (144 Hz or higher), the High preset at 215 FPS is the best choice, as it provides a significant visual upgrade over Low while still exceeding the refresh rate of most displays. The Ultra preset at 176 FPS is also viable, but the visual difference between High and Ultra in Doom may not justify the 39 FPS loss for users who prioritize maximum smoothness.

For 1440p users, the Medium preset at 165 FPS with a minimum of 140 FPS is the recommended choice. It offers a good balance of visual quality and performance, and the minimum FPS ensures that the experience remains smooth even during intense action sequences. The High preset at 139 FPS is also acceptable for users with 120 Hz monitors, but the Medium preset provides a larger safety margin against frame rate dips.

For 4K users, the Medium preset at 89 FPS is the best option. It provides a smooth experience that is well above 60 FPS, with a minimum of 76 FPS that prevents noticeable stuttering. The High preset at 75 FPS is also playable, but the Medium preset offers better frame pacing and a more consistent experience. The Ultra preset at 62 FPS is borderline, and users who are sensitive to frame rate fluctuations may want to avoid it in favor of Medium or High. The Low preset at 102 FPS is not recommended for 4K, as the visual quality reduction is significant and the frame rate gain over Medium is relatively modest.

CPU Role

The Intel Core Ultra 7 270K Plus is a 24-core, 24-thread processor from the Core Ultra Series 2, based on the Arrow Lake Refresh codename and built on a 3 nm process by TSMC. It has a base clock of 3.70 GHz and a boost clock of 5.50 GHz, with a TDP of 125 W. The CPU features 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 36 MB of shared L3 cache. It supports DDR5 memory in a dual-channel configuration, with a memory bandwidth of 115.2 GB/s. The processor also includes integrated Arc Xe-LPG Graphics with 64 execution units, though this is irrelevant for gaming performance when a discrete GPU is present.

In Doom, the CPU’s role is to feed the GPU with draw calls and game logic updates. The game is not particularly demanding on CPU resources, and the measured FPS data shows that the Core Ultra 7 270K Plus is more than capable of handling the workload. At 1080p Low settings, the system reaches 292 FPS, which is likely near the maximum that the game’s engine can produce regardless of the CPU. The fact that the frame rate drops significantly at higher resolutions, despite the CPU being unchanged, confirms that the CPU is not the bottleneck in this configuration.

The CPU’s benchmark scores are impressive, with a Cinebench R23 multi-core score of 44253 and a single-core score of 2439. The Passmark multi-thread score is 68574, and the single-thread score is 5068. These numbers place the CPU in the 96th percentile of all CPUs, and its nearest rivals are all high-end server processors, including the Intel Xeon 6520P and multiple AMD EPYC variants. The delta percentages between these rivals are minimal, ranging from 0% to -2.1%, indicating that the Core Ultra 7 270K Plus is at the very top of the performance hierarchy for multi-threaded workloads.

However, for gaming, the CPU’s massive multi-core advantage is largely unused. Doom primarily benefits from high single-core performance, and the Core Ultra 7 270K Plus delivers a single-core score of 2439 in Cinebench R23, which is excellent but not exceptional. The game’s frame rates are more closely tied to the GPU’s capabilities, as evidenced by the combo ranking of 866 out of 2930. If the CPU were the limiting factor, the combo would likely rank higher, closer to the CPU’s 96th percentile position. Instead, the ranking is pulled down by the GPU’s 85th percentile performance, indicating that the RX 6800 XT is the component that users should consider upgrading first if they want higher frame rates in this title. The data suggests that the CPU has significant headroom, and pairing it with a more powerful GPU would yield better results in Doom.