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numberwang said:

It seems that Intel's chips are somewhat comparable to AMD when locked to eco-mode around 90W, ex. the 14700K and 7700X are similar in FPS per Watt. However, Intel got nothing against X3D efficiency. The chart is somewhat skewed bc these X3D run at lower Watts here and that increases efficiency.

The thing is, even when Intel gets power-limited into an eco mode, it still comes with a worse FPS/Watt than a 7700X running in standard settings. And the 7700X is not considered especially conservative in it's power draw, hence why that part only barely beats his 4 year old predecessor 3700X. Had they put the 7700X also into ECO mode, it would have run away from the 14700K yet again.

The chart isn't skewed. Intel's P-cores are simply guzzling too much, and that's not helped at all by Intel's insistence of clocking them higher and higher. They get much more economic when their clock speeds drop to about 4.5Ghz, but at that point they wouldn't be able to compete with AMD anymore in terms of performance.