Is disabling some CPU cores reducing the power consumption considerably?

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If I have a CPU with 16 cores, say a Xeon 4216 and I disable 6 cores from, say, Windows Hyper-V Server 2019 (although any version of Windows should be the same), will the power consumption be similar to a Xeon 4210, which has 10 cores (if you ignore the slight difference in the frequency and the L3 cache sizes between the two processor...)?
Or the disabled cores will still consume some noticeable energy?

(I am comparing two PowerEdge servers, one with the 4210 and another one with the 4216 and using the estimation tool from Dell and some comparisons, I feel that the 4216 machine consumes way more power, even when idle. And I wonder if this can be changed somehow or if it is an inevitable evil from having many cores.)

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