27
votes
4answers
2k views

Hard Drives and types — What makes them so different?

7200RPM WD Blacks are designed to be faster then WD Blues/Greens. They are the same speed, same cache, etc., what really makes them actually faster? Does it have to do with spin up/down speeds or ...
12
votes
2answers
1k views

Why are most of 2TB hard disks released 5400 RPM?

Most of 1TB Hard disks run as 7200 RPM recently. But why 2TB is not? Few disks have a 7200 rpm specification. Is there a technical reason?