Product comparison · 2 internal hard drives

Seagate 750GB SATA II HDD,20Pk vs Seagate 750GB Ultra-ATA/100 HDD,20Pk

Key differences

Interface: Serial ATA II on the Seagate 750GB SATA II HDD,20Pk, Ultra-ATA/100 on the Seagate 750GB Ultra-ATA/100 HDD,20Pk.

Interface
- 750GB SATA II HDD,20Pk:Serial ATA II
- 750GB Ultra-ATA/100 HDD,20Pk:Ultra-ATA/100

Differences highlightedShow differences only

Comparison of 750GB SATA II HDD,20Pk, 750GB Ultra-ATA/100 HDD,20Pk
28 specifications	A Seagate 750GB SATA II HDD,20Pk View product	B Seagate 750GB Ultra-ATA/100 HDD,20Pk View product
Features1 differ
HDD capacity	750 GB	750 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA II	Ultra-ATA/100
Component for	Surveillance system	Surveillance system
Storage drive buffer size	16 MB	16 MB
Read seek time	17 ms	17 ms
Write seek time	14 ms	14 ms
Track to track seek time	1 ms	1 ms
Bytes per sector	512	512
Start/stop cycles	50000	50000
Poweridentical
Operating voltage	5 / 12 V	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating shock	63 G	63 G
Non-operating shock	300 G	300 G
Weight & dimensionsidentical
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
Weight	720 g	720 g
Other featuresidentical
Power requirements	+5V; +12V	+5V; +12V
Data transfer rate	3 Gbit/s	3 Gbit/s
Drive ready time	9 s	9 s
Internal	Yes	Yes
Drive devices burst data transfer rate (PIO)	0-4	0-4
Drive devices burst data transfer rate (Ultra DMA)	0-6	0-6

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.