Product comparison · 2 internal hard drives

Seagate S-series ST500LM000-50PK internal hard drive vs Seagate Constellation ST91000640NS-30PK internal hard drive

19specifications compared
13differ
6identical
13known for one product only

Key differences

The Seagate S-series ST500LM000-50PK internal hard drive has 3.5 ms more read seek time than the Seagate Constellation ST91000640NS-30PK internal hard drive (12 ms vs 8.5 ms). The Seagate S-series ST500LM000-50PK internal hard drive has 4.5 ms more write seek time than the Seagate Constellation ST91000640NS-30PK internal hard drive (14 ms vs 9.5 ms). The Seagate Constellation ST91000640NS-30PK internal hard drive has 2.71 W more power consumption (typical) than the Seagate S-series ST500LM000-50PK internal hard drive (5.21 W vs 2.5 W). HDD capacity: 500 GB on the Seagate S-series ST500LM000-50PK internal hard drive, 1 TB on the Seagate Constellation ST91000640NS-30PK internal hard drive. Type: Hybrid-HDD on the Seagate S-series ST500LM000-50PK internal hard drive, HDD on the Seagate Constellation ST91000640NS-30PK internal hard drive.

HDD capacity
- S-series ST500LM000-50PK internal hard drive:500 GB
- Constellation ST91000640NS-30PK internal hard drive:1 TB
Type
- S-series ST500LM000-50PK internal hard drive:Hybrid-HDD
- Constellation ST91000640NS-30PK internal hard drive:HDD
Read seek time
- S-series ST500LM000-50PK internal hard drive:12 ms
- Constellation ST91000640NS-30PK internal hard drive:8.5 ms
Write seek time
- S-series ST500LM000-50PK internal hard drive:14 ms
- Constellation ST91000640NS-30PK internal hard drive:9.5 ms
Power consumption (typical)
- S-series ST500LM000-50PK internal hard drive:2.5 W
- Constellation ST91000640NS-30PK internal hard drive:5.21 W
Power consumption (idle)
- S-series ST500LM000-50PK internal hard drive:0.9 W
- Constellation ST91000640NS-30PK internal hard drive:3.31 W
Operating temperature (T-T)
- S-series ST500LM000-50PK internal hard drive:0 - 60 °C
- Constellation ST91000640NS-30PK internal hard drive:5 - 60 °C
Operating shock
- S-series ST500LM000-50PK internal hard drive:350 G
- Constellation ST91000640NS-30PK internal hard drive:70 G

Side by side

Differences highlightedShow differences only

Comparison of ST500LM000-50PK, ST91000640NS-30PK
32 specifications	A Seagate S-series ST500LM000-50PK internal hard drive Model ST500LM000-50PK View product	B Seagate Constellation ST91000640NS-30PK internal hard drive Model ST91000640NS-30PK View product
Features4 differ
HDD capacityDiffers	500 GB	1 TB
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
HDD size	2.5"	2.5"
Interface	Serial ATA III	Serial ATA III
TypeDiffers	Hybrid-HDD	HDD
Storage drive buffer size	64 MB	64 MB
Read seek timeDiffers	12 ms	8.5 ms
Write seek timeDiffers	14 ms	9.5 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
Hybrid-HDD cache memoryKnown for one	8 GB	Unknown — not stated by the source
HDD number of cylindersKnown for one	1	Unknown — not stated by the source
HDD number of headsKnown for one	2	Unknown — not stated by the source
Bytes per sectorKnown for one	4096	Unknown — not stated by the source
Start/stop cyclesKnown for one	600000	Unknown — not stated by the source
Power2 differ
Power consumption (typical)Differs	2.5 W	5.21 W
Power consumption (idle)Differs	0.9 W	3.31 W
Operating voltage	5 V	5 V
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 60 °C
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3 G
Operating shockDiffers	350 G	70 G
Non-operating shockDiffers	1000 G	400 G
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Packaging contentidentical
ManualKnown for one	Unknown — not stated by the source	Yes
Quick start guideKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions3 differ
Width	70.1 mm	70.1 mm
DepthDiffers	100.3 mm	100.5 mm
HeightDiffers	7 mm	15 mm
WeightDiffers	95 g	200 g
Packaging data1 differ
Quantity per packDiffers	50 pc(s)	30 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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