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Seagate

ST3120813AS 120GB

The Seagate ST3120813AS 120GB is a 3.5" 120GB Hard Disk Drive.

It uses the SATA 3Gb/s interface and has a speed of 7200 RPM.

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Seagate ST3120813AS 120GB

Drive TypeHard Disk DriveThis defines whether the drive is a large-capacity slower hard disk drive, a smaller-capacity but much faster solid-state drive, or a hybrid
Physical Size3.5"The size of the drive dictates which drive bays it will fit into - generally a small drive will fit into any bigger drive bay with an adapter
Capacity120GBThe drive storage capacity is the limit to the size of files that can be stored
Cache Size8MBThe bigger the cache, the more data that can be temporarily stored for faster access
Power Required3WHDDs should generally require very little power to run, and SSDs even less
RPM7200 RPMThe higher the RPM, the faster the hard drive, and the faster stored data can be accessed
Drive InterfaceSATA 3Gb/sThe interface is the type of motherboard connection and defines the bandwidth limit of the drive

ST3120813AS 120GB compatibility review

The Seagate ST3120813AS 120GB is a hard disk drive, which means it stores data using quickly rotating disks, or platters, that can be read and written on via the moving actuator arm. Hard disk drives generally have a large storage capacity, and so are perfect for large amounts of data. The potential performance is well below that of solid-state drives, but they can definitely still hold their own. The Seagate ST3120813AS 120GB is a bottom of the range hard disk drive, and should only ever be used as basic data storage.

With a cache of 8MB, the Seagate ST3120813AS 120GB can store a very small amount of data temporarily. Loading data that has previously been loaded will result in barely any difference in access speed and load duration. At a speed of 7200 RPM, the hard disk drive spins at about the market average for desktop PCs. This speed is widely considered the desktop standard, providing a good balance between reliability, cost, performance, and noise.

With a capacity of 120GB, the Seagate ST3120813AS 120GB has a tiny amount of storage space for an hard disk drive. Using the SATA 2.0 3Gb/s interface this hard disk drive will not be limited by its connection with the motherboard, and there is currently no real reason to choose SATA 3.0 over SATA 2.0 for a mechanical hard disk drive (SSDs are another matter).

A form factor size of 3.5" is standard for desktop drives, and this will fit into any standard case drive bay, or into a 5.25" drive bay with an adapter.

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