Product comparison · 2 internal hard drives

Seagate Pipeline HD 320GB internal hard drive 8 MB Serial ATA vs Seagate 450GB 3.5" SAS

13specifications compared
10differ
3identical
22known for one product only

Key differences

HDD capacity
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:320 GB
- 450GB 3.5" SAS:450 GB
Interface
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:Serial ATA
- 450GB 3.5" SAS:SAS
Storage drive buffer size
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:8 MB
- 450GB 3.5" SAS:16 MB
Power consumption (idle)
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:3 W
- 450GB 3.5" SAS:12.4 W
Operating temperature (T-T)
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:0 - 75 °C
- 450GB 3.5" SAS:5 - 55 °C
Operating shock
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:70 G
- 450GB 3.5" SAS:60 G
Non-operating shock
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:300 G
- 450GB 3.5" SAS:250 G
Depth
- Pipeline HD 320GB internal hard drive 8 MB Serial ATA:147 mm
- 450GB 3.5" SAS:146.1 mm

Side by side

Differences highlightedShow differences only

Comparison of 320GB, 450GB 3.5" SAS
35 specifications	A Seagate Pipeline HD 320GB internal hard drive 8 MB Serial ATA Model 320GB View product	B Seagate 450GB 3.5" SAS View product
Features3 differ
HDD capacityDiffers	320 GB	450 GB
HDD speedKnown for one	Unknown — not stated by the source	15000 RPM
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
InterfaceDiffers	Serial ATA	SAS
Type	HDD	HDD
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Storage drive buffer sizeDiffers	8 MB	16 MB
HDD number of headsKnown for one	Unknown — not stated by the source	8
Read seek timeKnown for one	Unknown — not stated by the source	3.4 ms
Write seek timeKnown for one	Unknown — not stated by the source	3.9 ms
Average latencyKnown for one	Unknown — not stated by the source	2 ms
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
Power1 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	17.3 W
Power consumption (idle)Differs	3 W	12.4 W
Operating voltageKnown for one	Unknown — not stated by the source	5 / 12 V
Power consumption (standby)Known for one	0.6 W	Unknown — not stated by the source
Start-up currentKnown for one	1.8 A	Unknown — not stated by the source
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 75 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating vibrationKnown for one	Unknown — not stated by the source	1 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	2 G
Operating shockDiffers	70 G	60 G
Non-operating shockDiffers	300 G	250 G
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
Weight & dimensions3 differ
Width	101.6 mm	101.6 mm
DepthDiffers	147 mm	146.1 mm
HeightDiffers	20 mm	25.4 mm
WeightDiffers	380 g	709 g
Other featuresidentical
Sustained data rateKnown for one	Unknown — not stated by the source	171 MB/s
HDD transfer rateKnown for one	300 Mbit/s	Unknown — not stated by the source
Power requirementsKnown for one	5V ± 5%, 12V ± 10%	Unknown — not stated by the source
Data transfer rateKnown for one	3 Gbit/s	Unknown — not stated by the source
Drive ready timeKnown for one	8 s	Unknown — not stated by the source
InternalKnown for one	Yes	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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