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Comparison Hitachi Travelstar Z7K500.B 2.5" HTS725050B7E630 500 GB vs Seagate Momentus Thin 2.5" ST500LM021 500 GB
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Hitachi Travelstar Z7K500.B 2.5" HTS725050B7E630 500 GB
Seagate Momentus Thin 2.5" ST500LM021 500 GB 32/7200
Hitachi Travelstar Z7K500.B 2.5" HTS725050B7E630 500 GBSeagate Momentus Thin 2.5" ST500LM021 500 GB
32/7200
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Placementbuilt-inbuilt-in
TypeHDDHDD
FeaturespCpC
Size500 GB500 GB
Form factor2.5 "2.5 "
ConnectionSATA3SATA3
Manufacturer's warranty3 years2 years
Technical specs
Cache memory32 MB32 MB
RPM7200 rpm7200 rpm
Average search time12 ms11 ms
Operation power consumption2 W1.8 W
Standby power consumption0.85 W0.65 W
Shockproof400 G400 G
Reading noise level25 dB24 dB
Standby mode noise level23 dB23 dB
MTBF600 K
General
Size70x100x7 mm100x70x7 mm
Weight92 g95 g
Added to E-Catalogoctober 2017may 2014

Manufacturer's warranty

Manufacturer's warranty provided for this model.

In fact, this is the minimum service life promised by the manufacturer, subject to the rules of operation. Most often, the actual service life of the device is much longer than the guaranteed one.

Average search time

The time it takes for the hard disk mechanics to find random requested data to read. For each specific case, the search time is different, as it depends on the location of the data on the surface of the disk and the position of the read head, therefore, the average value is indicated in the characteristics of hard drives. The lower the average seek time, the faster the disk works, all other things being equal.

Operation power consumption

The amount of power consumed by the disk when reading and writing information. In fact, this is the peak power consumption, it is in these modes that the drive consumes the most energy.

HDD power consumption data is needed primarily to calculate the overall system power consumption and power supply requirements for the system. In addition, for laptops that are planned to be used often "in isolation from outlets", it is advisable to choose more economical drives.

Standby power consumption

The amount of power consumed by the disk "idle". In the on state, the disk platters rotate regardless of whether information is being written or read or not — maintaining this rotation takes the energy consumed while waiting.

The lower the power consumption while waiting, the more economical the disk is, the less energy it consumes. At the same time, we note that in fact this parameter is relevant mainly when choosing a drive for a laptop, when energy efficiency is crucial. For stationary PCs, “idle” power consumption does not play a special role, and when calculating the requirements for a power supply, it is necessary to take into account not this indicator, but the power consumption during operation (see above).

Reading noise level

The level of noise produced by the disk when reading and/or writing information. The source of sound in this case is the moving plates of the disk, as well as the mechanics that control the reading heads. The lower the noise level, the more comfortable the use of the device. The maximum noise produced by modern hard drives during operation is about 50 dB — this is comparable to the sound background in an average office.

MTBF

Guaranteed (minimum) number of hard drive on-off cycles after which it will remain operational. The higher this number, the more reliable the drive.
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