Product comparison · 2 internal hard drives

Seagate Constellation ST91000641NS-20PK internal hard drive vs Seagate Savvio ST9300453SS-20PK internal hard drive

23specifications compared
12differ
11identical
5known for one product only

Key differences

The Seagate Savvio ST9300453SS-20PK internal hard drive has 7,800 RPM more HDD speed than the Seagate Constellation ST91000641NS-20PK internal hard drive (15000 RPM vs 7200 RPM). The Seagate Constellation ST91000641NS-20PK internal hard drive has 5.9 ms more read seek time than the Seagate Savvio ST9300453SS-20PK internal hard drive (8.5 ms vs 2.6 ms). The Seagate Constellation ST91000641NS-20PK internal hard drive has 6.4 ms more write seek time than the Seagate Savvio ST9300453SS-20PK internal hard drive (9.5 ms vs 3.1 ms). HDD capacity: 1 TB on the Seagate Constellation ST91000641NS-20PK internal hard drive, 300 GB on the Seagate Savvio ST9300453SS-20PK internal hard drive. Interface: Serial ATA III on the Seagate Constellation ST91000641NS-20PK internal hard drive, SAS on the Seagate Savvio ST9300453SS-20PK internal hard drive.

HDD capacity
- Constellation ST91000641NS-20PK internal hard drive:1 TB
- Savvio ST9300453SS-20PK internal hard drive:300 GB
HDD speed
- Constellation ST91000641NS-20PK internal hard drive:7200 RPM
- Savvio ST9300453SS-20PK internal hard drive:15000 RPM
Interface
- Constellation ST91000641NS-20PK internal hard drive:Serial ATA III
- Savvio ST9300453SS-20PK internal hard drive:SAS
Read seek time
- Constellation ST91000641NS-20PK internal hard drive:8.5 ms
- Savvio ST9300453SS-20PK internal hard drive:2.6 ms
Write seek time
- Constellation ST91000641NS-20PK internal hard drive:9.5 ms
- Savvio ST9300453SS-20PK internal hard drive:3.1 ms
Average latency
- Constellation ST91000641NS-20PK internal hard drive:4.16 ms
- Savvio ST9300453SS-20PK internal hard drive:2 ms
Power consumption (typical)
- Constellation ST91000641NS-20PK internal hard drive:5.21 W
- Savvio ST9300453SS-20PK internal hard drive:7.92 W
Power consumption (idle)
- Constellation ST91000641NS-20PK internal hard drive:3.31 W
- Savvio ST9300453SS-20PK internal hard drive:4.23 W

Side by side

Differences highlightedShow differences only

Comparison of ST91000641NS-20PK, ST9300453SS-20PK
28 specifications	A Seagate Constellation ST91000641NS-20PK internal hard drive Model ST91000641NS-20PK View product	B Seagate Savvio ST9300453SS-20PK internal hard drive Model ST9300453SS-20PK View product
Features6 differ
HDD capacityDiffers	1 TB	300 GB
HDD speedDiffers	7200 RPM	15000 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Serial ATA III	SAS
Type	HDD	HDD
Storage drive buffer size	64 MB	64 MB
HDD number of cylindersKnown for one	Unknown — not stated by the source	2
HDD number of headsKnown for one	Unknown — not stated by the source	4
Read seek timeDiffers	8.5 ms	2.6 ms
Write seek timeDiffers	9.5 ms	3.1 ms
Average latencyDiffers	4.16 ms	2 ms
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1400000 h	Unknown — not stated by the source
Power2 differ
Power consumption (typical)Differs	5.21 W	7.92 W
Power consumption (idle)Differs	3.31 W	4.23 W
Operating voltage	5 V	5 V
Operational conditions4 differ
Operating temperature (T-T)Differs	5 - 60 °C	5 - 55 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating vibration	0.5 G	0.5 G
Non-operating vibrationDiffers	3 G	2.4 G
Operating shockDiffers	70 G	60 G
Non-operating shockDiffers	400 G	300 G
Weight & dimensionsidentical
Width	70.1 mm	70.1 mm
Depth	100.5 mm	100.5 mm
Height	15 mm	15 mm
Weight	200 g	200 g
Packaging dataidentical
Quantity per pack	20 pc(s)	20 pc(s)
Other featuresidentical
Data transfer rate	6 Gbit/s	6 Gbit/s

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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