Western Digital Blue 4 TB vs Western Digital WD Red Pro 20 TB

A side-by-side spec comparison of the Western Digital Blue 4 TB and the Western Digital WD Red Pro 20 TB. We line up every specification, highlight the winner of each, and tally an overall verdict so you can decide which storage is right for your build.

Side-by-side specification comparison of Western Digital Blue 4 TB and Western Digital WD Red Pro 20 TB.
Specification	Western Digital Blue 4 TB $249.99 Winner Buy on Amazon	Western Digital WD Red Pro 20 TB No price data
Type	SSD	HDD
Cache	0	512
Capacity	4000 GB	20000 GB
Interface	SATA	SATA
Read Speed	550 MB/s	550 MB/s
Form Factor	2.5"	3.5"
Write Speed	520 MB/s	520 MB/s

Western Digital Blue 4 TB

specs won

Western Digital WD Red Pro 20 TB

spec won

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