Many people think that when a graphics card has 400W in the specification, it still draws that much power.
Nothing more wrong.This is the peak maximum power consumption during intensive calculations.
Then it drops to 50 , 60W....
I tested a computer with i9-13900K and graphics Radeon RX 3900XT. During intensive testing, the wattmeter indicated a maximum of 450 watts for the whole computer. In the iddle it was already 30 maybe 40W.
So when we are talking about very expensive workstations it is not right to say that we will pay $10 more for electricity. Save $120 a year and you'll pay a few thousand dollars more for a Mac Pro or Mac Studio than for a PC.