u/Giannis_Dor

I dont know if this is the correct sub for this, but i want to image my pi 4 disk to my external disk i use for backups. before i was only imaging the sd card with dd and compressing it at the same time, but now i migrated everything to the external ssd that is 250gb. so dd runs for ever with the compression and only around 40gb is used how can i make an exact copy of my disk without taking up a lot of space?

My only image backup right now is one that i did dd the whole disk onto my hdd and then used 7zip on windows to compress it down to 200gb and it took all night to compress this on my laptop

The pi 4 is the 8gb one and i want to image it (or do some kind of system backup )using the pi it self to do the job onto the external hdd. It runs raspbery pi os (debian 13) without a gui (headless)

edit: the pi 4 only uses a 250gb ssd for its os

My laptop is the zephyrus m15 with the 1660ti the 80watt variant

For a while i have the gpu speed limited to 1350mhz with ghelper. And im playing around a bit to make it a bit more fast and reliable with good temps. At 1350mhz the watts are around 60w

i tested with the normal base clock of 1500mhz using a game that utilished 100 percent of the gpu and the watts where 75w that is normal. I then tested using funmark and it hit 90watts i quickly then stopped the test because i think its overclocking it self. While i was doing the tests i had metrics from msi afterburner and hwinfo the clock was at 1500mhz while doing the funmark test.

Why does it even hit 90watts if its a 80watt gpu? should i be worried?

in the past before ghelper existed i used msi afterburner to set a low but stable speed as an underclock at 1350mhz i stopped using this setup after i got ghelper

On the cpu side its underclocked -80mV from the bios and the cpu boost is disabled most of the time