SanDisk Ultra II 512 GB vs Seagate Desktop HDD 4 TB

A side-by-side spec comparison of the SanDisk Ultra II 512 GB and the Seagate Desktop HDD 4 TB. We line up every specification and score the ones that matter most in this category — weighted, not a raw count of specs won — to reach an overall verdict so you can decide which storage is right for your build.

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Side-by-side specification comparison of SanDisk Ultra II 512 GB and Seagate Desktop HDD 4 TB.
Specification	SanDisk Ultra II 512 GB $89.99 Amazon price as of Oct 23, 14:00 UTC Buy on Amazon	Seagate Desktop HDD 4 TB $189.99 Amazon price as of Oct 23, 08:02 UTC Winner Buy on Amazon
Type	SSD	HDD
Cache	0	64
Capacity	512 GB	4000 GB
Interface	SATA	SATA
Read Speed	550 MB/s	550 MB/s
Form Factor	mSATA	3.5"
Write Speed	520 MB/s	520 MB/s

Winner: Seagate Desktop HDD 4 TB — driven by Capacity (4000 GB)

SanDisk Ultra II 512 GB

performance points

Seagate Desktop HDD 4 TB

performance points

Winner is scored by weighting the specs that matter most in this category (not a raw count of specs won).

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