Western Digital Blue SN580 500 GB vs Western Digital Purple 3 TB

A side-by-side spec comparison of the Western Digital Blue SN580 500 GB and the Western Digital Purple 3 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 SN580 500 GB and Western Digital Purple 3 TB.
Specification	Western Digital Blue SN580 500 GB $199.00 Winner Buy on Newegg	Western Digital Purple 3 TB $199.95 Buy on Amazon
Type	SSD	HDD
Cache	0	64
Capacity	500 GB	3000 GB
Interface	NVMe Gen4	SATA
Read Speed	7000 MB/s	550 MB/s
Form Factor	M.2 2280	3.5"
Write Speed	5000 MB/s	520 MB/s

Western Digital Blue SN580 500 GB

specs won

Western Digital Purple 3 TB

spec won

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