Product comparison · 2 internal hard drives

Seagate Barracuda 320GB vs Seagate Barracuda XT

7specifications compared
4differ
3identical
30known for one product only

Key differences

HDD capacity
- Barracuda 320GB:320 GB
- Barracuda XT:3 TB
Interface
- Barracuda 320GB:Serial ATA II
- Barracuda XT:Serial ATA
Storage drive buffer size
- Barracuda 320GB:8 MB
- Barracuda XT:64 MB
Operating voltage
- Barracuda 320GB:5 V
- Barracuda XT:5 / 12 V

Side by side

Differences highlightedShow differences only

Comparison of Barracuda 320GB, Barracuda XT
37 specifications	A Seagate Barracuda 320GB View product	B Seagate Barracuda XT View product
Features3 differ
HDD capacityDiffers	320 GB	3 TB
HDD speed	7200 RPM	7200 RPM
InterfaceDiffers	Serial ATA II	Serial ATA
Storage drive buffer sizeDiffers	8 MB	64 MB
HDD number of cylindersKnown for one	16383	Unknown — not stated by the source
HDD number of headsKnown for one	4	Unknown — not stated by the source
Read seek timeKnown for one	0.8 ms	Unknown — not stated by the source
Write seek timeKnown for one	1 ms	Unknown — not stated by the source
Average latencyKnown for one	4.16 ms	Unknown — not stated by the source
Bytes per sectorKnown for one	512	Unknown — not stated by the source
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Start-up currentKnown for one	2.8 A	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	5 - 55 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	5 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating vibrationKnown for one	5–22Hz: 0.25Gs, 22–350Hz: 0.50Gs, 350–500Hz: 0.25Gs	Unknown — not stated by the source
Non-operating vibrationKnown for one	5–22Hz: 0.25Gs, 22–350Hz: 5.0Gs, 350–500Hz: 1.0Gs	Unknown — not stated by the source
Operating altitudeKnown for one	-60.96 - 3.048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-60.96 - 12.192 m	Unknown — not stated by the source
Operating shockKnown for one	63 G	Unknown — not stated by the source
Non-operating shockKnown for one	350 G	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	101.6 mm	Unknown — not stated by the source
DepthKnown for one	147 mm	Unknown — not stated by the source
HeightKnown for one	26.1 mm	Unknown — not stated by the source
WeightKnown for one	635 g	Unknown — not stated by the source
Other featuresidentical
Internal	Yes	Yes
Maximum data transfer rateKnown for one	1030 Mbit/s	Unknown — not stated by the source
Recording densityKnown for one	781 kbit/inch	Unknown — not stated by the source
USB powered	No	No
Sustained data rateKnown for one	72 MB/s	Unknown — not stated by the source
Drive devices burst data transfer rate (PIO)Known for one	0-4	Unknown — not stated by the source
Drive devices burst data transfer rate (Ultra DMA)Known for one	0-6	Unknown — not stated by the source
Product colourKnown for one	Unknown — not stated by the source	Black
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Compatible productsKnown for one	Unknown — not stated by the source	Windows Vista, 7

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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