Product comparison · 2 external hard drives

iStorage SonicSTOR eSATA & USB 2.0 320GB vs iStorage SonicSTOR eSATA & USB 2.0 400GB

Key differences

HDD capacity
- SonicSTOR eSATA & USB 2.0 320GB:320 GB
- SonicSTOR eSATA & USB 2.0 400GB:400 GB
Storage drive buffer size
- SonicSTOR eSATA & USB 2.0 320GB:8 MB
- SonicSTOR eSATA & USB 2.0 400GB:16 MB

Differences highlightedShow differences only

Comparison of SonicSTOR eSATA & USB 2.0 320GB, SonicSTOR eSATA & USB 2.0 400GB
18 specifications	A iStorage SonicSTOR eSATA & USB 2.0 320GB View product	B iStorage SonicSTOR eSATA & USB 2.0 400GB View product
Hard drive2 differ
HDD capacityDiffers	320 GB	400 GB
HDD speed	7200 RPM	7200 RPM
Type	HDD	HDD
Storage drive average seek time	9 ms	9 ms
Storage drive buffer sizeDiffers	8 MB	16 MB
Ports & interfacesidentical
eSATA	Yes	Yes
Weight & dimensionsidentical
Width	38 mm	38 mm
Depth	198 mm	198 mm
Height	119 mm	119 mm
Packaging dataidentical
User guide	Yes	Yes
Other featuresidentical
Internal	No	No
Mac compatibility	Yes	Yes
Mean time between failures (MTBF)	750000 h	750000 h
Supported data transfer rates	700-800MB/min (USB 2.0), 1.5Gb/s (SATA), 3.0 Gb/s (SATA2)	700-800MB/min (USB 2.0), 1.5Gb/s (SATA), 3.0 Gb/s (SATA2)
USB 2.0 ports quantity	1	1
USB cable	USB	USB
Compatible operating systems	Windows 98/98SE/ME/2000/XP/Vista & Mac OS 10.2 +	Windows 98/98SE/ME/2000/XP/Vista & Mac OS 10.2 +
eSATA cable	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.