Product comparison · 2 internal hard drives

Seagate ST91000640SS-40PK internal hard drive vs Seagate Constellation ST91000642SS-40PK internal hard drive

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Comparison of ST91000640SS-40PK, ST91000642SS-40PK
28 specifications	A Seagate ST91000640SS-40PK internal hard drive Model ST91000640SS-40PK View product	B Seagate Constellation ST91000642SS-40PK internal hard drive Model ST91000642SS-40PK View product
Featuresidentical
HDD interface transfer rateKnown for one	6 Gbit/s	Unknown — not stated by the source
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Poweridentical
Power consumption (typical)Known for one	6.4 W	Unknown — not stated by the source
Power consumption (read)Known for one	Unknown — not stated by the source	6.4 W
Other featuresidentical
Security algorithmsKnown for one	Unknown — not stated by the source	256-bit AES, FIPS 140-2

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.