It's a really nice case for 2.5" drives. This one was €5, the usb2 one being a few cents cheaper.The controller is a innostor is621 which, despite some adverts stating it, is not UASP/ SATA. It connects as a bulk transfer drive (Win 10). The manufacturer's web site doesn't state it either, and I can't find a datasheet.
However, the Maxtor M3 drive I bought is UAS/ UASP, but tops out at ~20MB on usb2. Odd, considering it could be 480Mb/60MB. Write cache was off (normal) From a few searches, plus info from CrystalDiskInfo, plus a teardown video, the drive is Seagate st2000lm007 (mobile HDD), with a 128MB cache, 140MB/s, SATA 6Gb/s.
https://www.seagate.com/www-content/datasheets/pdfs/mobile-hddDS1861-2-1603-en_US.pdf
Nice review here
http://goughlui.com/2016/09/28/review-maxtor-m3-portable-4tb-usb-3-0-external-hard-drive-hx-m401tcbgm/
Crystal Disk Mark Q32T1 shows 32MB read regardless of cache setting. The write improves from 28.5M to 30M with cache on. Seq write test was actually 6MB worse with cache on. The above review shows 41MB normally, plus a massive improvement to 100MB with cache on. USB3 makes a lot of difference.
No comments:
Post a Comment