I'm also having issues reducing the actual power consumption of my box. Right now isn't too bad, but living in Germany I want to squeeze every single Watt from the box to a minimum. I've been reading the 18 pages from start to end, and here is my info:
Intel i5-13500 13th Gen
ASRock B760m Pro RS/D4
Corsair Vengeance LPX 1x16GB DDR4 3200MHz - Originally planned 4x16, but for testing I have only one.
Noctua NH-L12S
WD SN850x 2TB (also tried with a Samsung I had around with similar result)
Corsair RM850x
I've disabled everything unnecessary on the BIOS (LEDs, Audio, Thunderbolt...), activated all the C-States, enabled ASPM for all devices, followed all the recommendations of @mgutt, but cannot get below 30W. Also updated powertop to 2.15 to get the other C-States to show up, but cannot get past C3. Also moved the NVMe from the CPU slot to the Chipset one, no effect.
At this point, I can still return some of the equipment and get another ones, any recommendation on what to do? Seems like the Motherboard is just taking too much power, any recommendations for a mATX board that is actually power efficient?
Thanks a lot!