Product comparison · 2 internal hard drives

Seagate Cheetah 15K.7 internal hard drive vs Seagate Barracuda 320GB

20specifications compared
16differ
4identical
19known for one product only

Key differences

HDD capacity
- Cheetah 15K.7 internal hard drive:300 GB
- Barracuda 320GB:320 GB
HDD speed
- Cheetah 15K.7 internal hard drive:15000 RPM
- Barracuda 320GB:7200 RPM
Interface
- Cheetah 15K.7 internal hard drive:Ultra320 SCSI
- Barracuda 320GB:Serial ATA II
Storage drive buffer size
- Cheetah 15K.7 internal hard drive:16 MB
- Barracuda 320GB:8 MB
HDD number of heads
- Cheetah 15K.7 internal hard drive:8
- Barracuda 320GB:4
Read seek time
- Cheetah 15K.7 internal hard drive:3.4 ms
- Barracuda 320GB:0.8 ms
Write seek time
- Cheetah 15K.7 internal hard drive:3.9 ms
- Barracuda 320GB:1 ms
Average latency
- Cheetah 15K.7 internal hard drive:2 ms
- Barracuda 320GB:4.16 ms

Side by side

Differences highlightedShow differences only

Comparison of 15K.7, Barracuda 320GB
39 specifications	A Seagate Cheetah 15K.7 internal hard drive Model 15K.7 View product	B Seagate Barracuda 320GB View product
Features8 differ
HDD capacityDiffers	300 GB	320 GB
HDD speedDiffers	15000 RPM	7200 RPM
InterfaceDiffers	Ultra320 SCSI	Serial ATA II
Storage drive buffer sizeDiffers	16 MB	8 MB
HDD number of cylindersKnown for one	Unknown — not stated by the source	16383
HDD number of headsDiffers	8	4
Read seek timeDiffers	3.4 ms	0.8 ms
Write seek timeDiffers	3.9 ms	1 ms
Average latencyDiffers	2 ms	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1600000 h	Unknown — not stated by the source
Power2 differ
Operating voltageDiffers	5 / 12 V	5 V
Start-up currentDiffers	3.75 A	2.8 A
Power consumption (typical)Known for one	13.8 W	Unknown — not stated by the source
Power consumption (standby)Known for one	8.98 W	Unknown — not stated by the source
Operational conditions4 differ
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating vibrationDiffers	1 G	5–22Hz: 0.25Gs, 22–350Hz: 0.50Gs, 350–500Hz: 0.25Gs
Non-operating vibrationDiffers	3 G	5–22Hz: 0.25Gs, 22–350Hz: 5.0Gs, 350–500Hz: 1.0Gs
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3.048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12.192 m
Operating shockDiffers	60 G	63 G
Non-operating shockDiffers	300 G	350 G
Weight & dimensions2 differ
WidthDiffers	101.8 mm	101.6 mm
WeightDiffers	671 g	635 g
Other featuresidentical
InternalKnown for one	Unknown — not stated by the source	Yes
Maximum data transfer rateKnown for one	Unknown — not stated by the source	1030 Mbit/s
Recording densityKnown for one	Unknown — not stated by the source	781 kbit/inch
USB poweredKnown for one	Unknown — not stated by the source	No
Sustained data rateKnown for one	Unknown — not stated by the source	72 MB/s
Drive devices burst data transfer rate (PIO)Known for one	Unknown — not stated by the source	0-4
Drive devices burst data transfer rate (Ultra DMA)Known for one	Unknown — not stated by the source	0-6
Data transfer rateKnown for one	4 Gbit/s	Unknown — not stated by the source

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.

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