Here's some good info that I found about how to use PowerMonkey.
(All credit goes to the author, not me, I'm just sharing a link.)
https://mreggtart.com/posts/undervolting-windows-11-powermonkey/
My card tests slower
I have one of these cards purchased from chiefvalue and just received today. It looks exactly like the one pictured in the article. The serial number is a slightly different format: G16GNMC830754.
With HDTach it only measures 12.5MB/s avg read speed and 0.8ms random...