Very nice. For comparison, i ran this on my Nano Pi M4v1 with SATA hat and Sandisk SSD Plus.
$ dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 4.25152 s, 253 MB/s