I'm afraid what he said is very different from what you saw. Pls stop coming back to this topic again and again and again. It seems to people knowing what you're talking about, you proved nothing. To newbies, you've been just confusing people.
You could come up with some experiment yourself and check if you're really saving battery with your "power management new BootRom" Couldn't you? Or, perhaps you can also produce screenshots (take fiftystorm's template) to show people what you saw. Ofc in your case, the graph will be no kexts but some disk activities with different current levels.
Dear lvic,
Sorry, it was never my intention to upset you.
There have been many observations in this forum (including a couple of my own, with photo's). Unfortunately there are several observations that simply don't make sense to me (or you, with regard to my Intel 660p). As such, I'm trying to come to hypotheses that might explain what we observe. Maybe they can be validated (yes, with even more tests/observations).
The "experiment" below will be my last contribution; I don't like the tone of your recent replies and my mission is completed: the upgrade of the SSD. It’s affordable, bigger, faster, battery run time is comparable and it’s rock stable. The only small concession is the boot time. I might get into that to learn why.
For my next project I’ve bought an Edgerouter 4 and a Cisco layer 3 switch. Not because I needit, but to learn and have fun during this everlasting lockdown.
First screen:
Running idle/low usage for some time on battery. Then for about 2 minutes BlackMagic. Let the SSD come to rest (the cache of the SSD needs to be processed).
Second screen:
Running on power adapter for some time (same room, same day, next after the battery test). Run BlackMagic for about 2 minutes. Wait until the SSD has cleared the cache (it's a Q SSD).
Question: is the SSD using less power on battery than on Power Adaptor (and could the 0.00x A reading be correct) ?
iStat menus reports 0.00A and 0.17 for the battery and power adapter operation.
Lower current (i.e. power) should lead to a lower temperature of the SSD. The respective temperatures are 30 and 34 degrees Celsius (room temperature is about 18). It's an indication that the hypothesis (lower power usage of the SSD during battery operation, the 0.00A reading is correct) is correct. But I must admit that a difference of 4 degrees isn't hard convincing evidence (the power difference according to the current readings in iStat Menus resemble about 0.5 Watt).
In addition to the temperature readings: the fan is off when running on battery, and runs at lowest speed when running on power adapter. With high cpu load, iStat menus does show that the fan becomes active when running on battery (so the “turned off” is likely not an error in iStat menus). A running fan will likely have some cooling effect on the temperature of the SSD. That makes it even more likely that the power usage of the SSD is indeed significant lower when running on battery.
The reason for this test is to verify whether my observation that my Intel 660p seems to be running with power management (without any special kext file) since Big Sur (and the newest firmware), is correct. No one else has described this for an NVME SSD far as I know. So there is serious doubt, and I try to collect evidence that either rejects or supports my observation and conclusion.
I ‘m open for any evidence that supports a conclusion that the 0.00A reading in iStat Menus is a “glitch”.
Kvic, your contributions are highly appreciated, keep up the good work.
Kind regards,
Maurice.
