Product comparison · 2 internal hard drives

Seagate Barracuda ES SATA 500GB vs Seagate Cheetah 15K.5 Ultra320 SCSI 146GB

Key differences

HDD capacity
- Barracuda ES SATA 500GB:500 GB
- Cheetah 15K.5 Ultra320 SCSI 146GB:146.8 GB
HDD speed
- Barracuda ES SATA 500GB:7200 RPM
- Cheetah 15K.5 Ultra320 SCSI 146GB:15000 RPM
Interface
- Barracuda ES SATA 500GB:Serial ATA
- Cheetah 15K.5 Ultra320 SCSI 146GB:SCSI
Read seek time
- Barracuda ES SATA 500GB:8.5 ms
- Cheetah 15K.5 Ultra320 SCSI 146GB:3.5 ms
Write seek time
- Barracuda ES SATA 500GB:10 ms
- Cheetah 15K.5 Ultra320 SCSI 146GB:4 ms
Average latency
- Barracuda ES SATA 500GB:4.16 ms
- Cheetah 15K.5 Ultra320 SCSI 146GB:2 ms
Width
- Barracuda ES SATA 500GB:101.6 mm
- Cheetah 15K.5 Ultra320 SCSI 146GB:101.8 mm
Weight
- Barracuda ES SATA 500GB:635 g
- Cheetah 15K.5 Ultra320 SCSI 146GB:839 g

Differences highlightedShow differences only

Comparison of Barracuda ES SATA 500GB, Cheetah 15K.5 Ultra320 SCSI 146GB
14 specifications	A Seagate Barracuda ES SATA 500GB View product	B Seagate Cheetah 15K.5 Ultra320 SCSI 146GB View product
Features6 differ
HDD capacityDiffers	500 GB	146.8 GB
HDD speedDiffers	7200 RPM	15000 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA	SCSI
Storage drive buffer size	16 MB	16 MB
Read seek timeDiffers	8.5 ms	3.5 ms
Write seek timeDiffers	10 ms	4 ms
Average latencyDiffers	4.16 ms	2 ms
Poweridentical
Operating voltage	5 / 12 V	5 / 12 V
Weight & dimensions2 differ
WidthDiffers	101.6 mm	101.8 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	635 g	839 g
Other featuresidentical
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.