Western Digital Ultrastar DC HC550 16 TB vs Western Digital Ultrastar DC HC550 18 TB

A side-by-side spec comparison of the Western Digital Ultrastar DC HC550 16 TB and the Western Digital Ultrastar DC HC550 18 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 Ultrastar DC HC550 16 TB and Western Digital Ultrastar DC HC550 18 TB.
Specification	Western Digital Ultrastar DC HC550 16 TB $694.45 Winner Buy on Amazon	Western Digital Ultrastar DC HC550 18 TB $694.45 Buy on Amazon
Type	HDD	HDD
Cache	512	512
Capacity	16000 GB	18000 GB
Interface	SAS 12.0 Gb/s	SATA
Read Speed	550 MB/s	550 MB/s
Form Factor	3.5"	3.5"
Write Speed	520 MB/s	520 MB/s

Western Digital Ultrastar DC HC550 16 TB

specs won

Western Digital Ultrastar DC HC550 18 TB

spec won

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