If I have a full SSD and clean it with
diskpart clean, will the SSD controller receive a TRIM command (assuming I'm running in AHCI mode)? This would be crucial for performance or even healthiness of the SSD because otherwise it wouldn't know that all data is invalid and can be overwritten at will.
I'm writing this out of suspicion it doesn't get a TRIM because I have ruined two Surface Pros so far while testing a reimaging process that involves a clean command. The devices got ever slower and at some time stopped working altogether. A missing TRIM would be consistent with this behavior.