Product comparison · 2 internal hard drives

Seagate Constellation ST91000640NS-40PK internal hard drive vs Seagate Constellation ST91000642SS-40PK internal hard drive

22specifications compared
2differ
20identical
7known for one product only

Key differences

The Seagate Constellation ST91000642SS-40PK internal hard drive has 0.54 W more power consumption (idle) than the Seagate Constellation ST91000640NS-40PK internal hard drive (3.85 W vs 3.31 W). Interface: Serial ATA III on the Seagate Constellation ST91000640NS-40PK internal hard drive, SAS on the Seagate Constellation ST91000642SS-40PK internal hard drive.

Interface
- Constellation ST91000640NS-40PK internal hard drive:Serial ATA III
- Constellation ST91000642SS-40PK internal hard drive:SAS
Power consumption (idle)
- Constellation ST91000640NS-40PK internal hard drive:3.31 W
- Constellation ST91000642SS-40PK internal hard drive:3.85 W

Side by side

Differences highlightedShow differences only

Comparison of ST91000640NS-40PK, ST91000642SS-40PK
29 specifications	A Seagate Constellation ST91000640NS-40PK internal hard drive Model ST91000640NS-40PK View product	B Seagate Constellation ST91000642SS-40PK internal hard drive Model ST91000642SS-40PK View product
Features1 differ
InterfaceDiffers	Serial ATA III	SAS
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Power1 differ
Power consumption (typical)Known for one	5.21 W	Unknown — not stated by the source
Power consumption (idle)Differs	3.31 W	3.85 W
Power consumption (read)Known for one	Unknown — not stated by the source	6.4 W
Packaging contentidentical
ManualKnown for one	Yes	Unknown — not stated by the source
Quick start guideKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
Data transfer rateKnown for one	6 Gbit/s	Unknown — not stated by the source
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.

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