I have two separate Western Digital Passport external drives that I use for temp storing and backing up of media files when I'm working in the field (I'm a video producer, so I need to offload and backup camera and audio files before storing them to my home RAID). Recently I've been shooting RAW video which has very large files sizes (1Gb/s - 128GB cards fill after 30 mins of recording time), and so dumping data off the cards take a long time.
I noticed that one of my drives was taking longer to offload cards onto it compared to the other drive - even though the amount of data on the cards was comparable. So when I got home I ran CrystalDiskMark on both drives and this is what I got:
Drive A
SeqQ32t1 - READ - 34.15 MB/s
Drive B
SeqQ32t1 - READ - 119.5 MB/s
Drive A
SeqQ32t1 - WRITE - 35.04 MB/s
Drive B
SeqQ32t1 - WRITE - 104.7 MB/s
The difference seems significant. Otherwise, these should be the exact same drives.
I noticed that one of my drives was taking longer to offload cards onto it compared to the other drive - even though the amount of data on the cards was comparable. So when I got home I ran CrystalDiskMark on both drives and this is what I got:
Drive A
SeqQ32t1 - READ - 34.15 MB/s
Drive B
SeqQ32t1 - READ - 119.5 MB/s
Drive A
SeqQ32t1 - WRITE - 35.04 MB/s
Drive B
SeqQ32t1 - WRITE - 104.7 MB/s
The difference seems significant. Otherwise, these should be the exact same drives.