Xeon processor power consumption?

Question

Processors

Hello, please do not answer from the bulldozer, but only based on real experience ...
My home computer also acts as a virtualizer, sometimes I throw 6 cores and 16 RAM into virtual machines, I compile software under Linux ...
Well, that's the question,
Now there is a Xeon e5-2609 v4 processor (80w, 8 cores, 1.7GHz),
I want to install a Xeon e5-1660 v4 (140w, 8 cores, 3.2-3.8GHz),
provided that the load on the cores will remain at the same limit for me will consumption rise?
Well, an interesting question is how efficient the processor is, how much it will consume in idle time, whether there will be more, if about the same consumption.
And the second question, if the processor runs at maximum frequencies, but is not loaded with work, it consumes more, if at a lower frequency, but also in idle time (you know there is a minimum and maximum in energy saving, it shows 1.1 GHz in the task manager, and the frequency jumps .. .)?

Answer 1

provided that the load on the cores will remain at the same limit, will my consumption increase?

It is necessary to test or look for ready-made tests. If it grows, it will not be much, and may even decrease.

maximum frequencies, but not loaded with work, it consumes more, if at a lower frequency, but also in idle

Yes, more, but the difference is negligible, I would not take a steam bath. The operating system can dynamically change the frequency? Well, fine.

Answer 2

Yes, it will consume more, about 2 times. It has to do with frequency. Moreover, it will consume more on the same tasks, but it will turn them faster. Also, in idle mode, it will dissipate more power, since its base frequency is approximately twice as high.
As for technologies
- turbo boost - will raise the frequency from base to maximum on one or several cores
- speed step - depending on the current load, it can drop the frequency (actually a multiplier) up to 800 megahertz
- demand based switching - will turn off unused peripherals .
In general, as soon as there is some task that stays in the core for a "long time", the processor itself automatically raises the frequency first to the base, then to the maximum on this core. If all cores are loaded, the processor will reset the frequency back to the base. If there are no tasks, it will reset the frequency depending on the current load level (C1..C4) to the minimum. On average, you will still have twice the CPU consumption.