cardea zero

Got this Team Force Cardea Zero NVMe PCIe Gen4 drive, performance isn't what was promised. https://www.teamgroupinc.com/en/product/cardea-zero-z440 They say write speeds of 4,400 but I am not even seeing half that. $ dd if=/dev/zero of=/tmp/test1.img bs=1G count=10 ; rm /tmp/test*.img 10+0...