Western Digital Blue, Black, Red, Gold, or Purple: The best internal HDD for your PC

The hard drive is a trusty component used to store a lot of content on your PC. Available in sizes that can go all the way up to 16TB (that's 16,000GB), and different models are available from various vendors. Western Digital is one such company that offers both mechanical and solid-state drive (SSD) storage, but it can be a little confusing as to which one you should go with. Western Digital has the Blue, Black, Red, and Gold brands for mechanical drives.

It's always recommended that you go with an SSD for Windows 10 and other software to be installed on, leaving a mechanical drive free for storing games and files. The Western Digital Blue is the hard-disk drive (HDD) built for the desktop, while the Black takes things to the next level for professionals and gamers. Enterprise and server owners have the Gold series to look through and the Red series of drives are specifically designed for NAS use.

Here's a spec comparison of Western Digital drives.

Category	WD Blue	WD Black	WD Red	WD Gold	WD Purple
Capacity	500GB to 6TB	500GB to 6TB	750GB to 10TB	1TB to 12TB	500GB to 10TB
Interface	SATA III	SATA III	SATA III	SATA III	SATA III
Form factor	2.5-inch 3.5-inch	2.5-inch 3.5-inch	3.5-inch	3.5-inch	3.5-inch
Data transfer	175MB/s (6 TB)	218MB/s (6TB)	178MB/s (8 TB)	200MB/s (12 TB)	210MB/s (10TB)
Cache	64MB	64MB to 256MB	16MB to 256MB	128MB to 256MB	64MB to 256MB
Speed	5,400 RPM 7,200 RPM	7,200 RPM	5,400 RPM	7,200 RPM	5,400 RPM
Use	Home	Work and gaming	NAS	Enterprise	Surveillance
Warranty	Two years	Five years	Three years	Five years	Three years
Price	From $43.99	From $63.99	From $62.99	From $79.99	From $53.49

Pricing is fairly competitive between vendors and Western Digital's family of drives, thanks to the affordability of mechanical drives. You should go for the fastest drive with the most cache and capacity you can afford. This specification comparison should help you get started.

Further reading