Product comparison · 2 internal hard drives

Seagate Constellation ST31000425SS internal hard drive vs Seagate Constellation ST3500415SS internal hard drive

Key differences

HDD capacity
- Constellation ST31000425SS internal hard drive:1 TB
- Constellation ST3500415SS internal hard drive:500 GB
Weight
- Constellation ST31000425SS internal hard drive:640 g
- Constellation ST3500415SS internal hard drive:610 g
Drive device, transfer rate
- Constellation ST31000425SS internal hard drive:150 MB/s
- Constellation ST3500415SS internal hard drive:600 MB/s

Differences highlightedShow differences only

Comparison of ST31000425SS, ST3500415SS
23 specifications	A Seagate Constellation ST31000425SS internal hard drive Model ST31000425SS View product	B Seagate Constellation ST3500415SS internal hard drive Model ST3500415SS View product
Features1 differ
HDD capacityDiffers	1 TB	500 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
Interface	Serial ATA II	Serial ATA II
Storage drive buffer size	16 MB	16 MB
Read seek time	8.5 ms	8.5 ms
Write seek time	9.5 ms	9.5 ms
Average latency	4.16 ms	4.16 ms
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1200000 h
Poweridentical
Power consumption (typical)	8 W	8 W
Operating voltage	5 / 12 V	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Operating shock	70 G	70 G
Weight & dimensions1 differ
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	640 g	610 g
Other features1 differ
Drive device, transfer rateDiffers	150 MB/s	600 MB/s
External power adapterKnown for one	No	Unknown — not stated by the source
Internal	Yes	Yes
Mac compatibilityKnown for one	No	Unknown — not stated by the source
USB poweredKnown for one	No	Unknown — not stated by the source
USB requiredKnown for one	No	Unknown — not stated by the source

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.