Product comparison · 2 internal hard drives

Seagate Barracuda ES.2 SATA 250GB vs Seagate Cheetah 15K.5 SAS 300GB

Key differences

HDD capacity
- Barracuda ES.2 SATA 250GB:250 GB
- Cheetah 15K.5 SAS 300GB:300 GB
HDD speed
- Barracuda ES.2 SATA 250GB:7200 RPM
- Cheetah 15K.5 SAS 300GB:15000 RPM
Interface
- Barracuda ES.2 SATA 250GB:Serial ATA
- Cheetah 15K.5 SAS 300GB:SAS
Read seek time
- Barracuda ES.2 SATA 250GB:8.5 ms
- Cheetah 15K.5 SAS 300GB:3.5 ms
Write seek time
- Barracuda ES.2 SATA 250GB:9.5 ms
- Cheetah 15K.5 SAS 300GB:4 ms
Average latency
- Barracuda ES.2 SATA 250GB:4.16 ms
- Cheetah 15K.5 SAS 300GB:2 ms
Width
- Barracuda ES.2 SATA 250GB:101.6 mm
- Cheetah 15K.5 SAS 300GB:101.8 mm
Weight
- Barracuda ES.2 SATA 250GB:518 g
- Cheetah 15K.5 SAS 300GB:839 g

Differences highlightedShow differences only

Comparison of Barracuda ES.2 SATA 250GB, Cheetah 15K.5 SAS 300GB
14 specifications	A Seagate Barracuda ES.2 SATA 250GB View product	B Seagate Cheetah 15K.5 SAS 300GB View product
Features6 differ
HDD capacityDiffers	250 GB	300 GB
HDD speedDiffers	7200 RPM	15000 RPM
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
InterfaceDiffers	Serial ATA	SAS
Read seek timeDiffers	8.5 ms	3.5 ms
Write seek timeDiffers	9.5 ms	4 ms
Average latencyDiffers	4.16 ms	2 ms
Storage drive buffer sizeKnown for one	32 MB	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	Unknown — not stated by the source	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	518 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.