Seagate 3.5" 320 GB SATA vs Seagate 3.5" 320 GB Ultra ATA/100

Comparison of 3.5" 320 GB SATA, 3.5" 320 GB Ultra ATA/100

14 specifications	A Seagate 3.5" 320 GB SATAView product	B Seagate 3.5" 320 GB Ultra ATA/100View product
Features1 differ
HDD capacity	320 GB	320 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA II	Ultra-ATA/100
Storage drive buffer size	16 MB	16 MB
Average latency	4.16 ms	4.16 ms
Mean time between failures (MTBF)	700000 h	700000 h
Poweridentical
Operating voltage	5 / 12 V	5 / 12 V
Weight & dimensionsidentical
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
Weight	635 g	635 g
Other featuresidentical
Data transfer rateKnown for one	3 Gbit/s	—Unknown — not stated by the source
Internal	Yes	Yes

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.