secure erase a samsung ssd before clean install ?

Hey Total - Everything is here to get and keep a perfect Clean Reinstall Windows 7
and has been used by 1.5 million consumers without a single complaint.

As to your question, it doesn't really require more than deleting all partitions during the booted install to get it clean enough for reinstall.

Only in cases where its suspected that old boot code is interfering is wiping really needed and then only Diskpart Clean Command will do that job as well as wipe partition table clean.

The full wipe (Diskpart Clean All) is mainly used to make data unrecoverable by all but forensics means.

I hope this answers your questions and puts you on path to a great install.