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PARALLEL ATA vs. SERIAL ATA HARD DRIVES

SATA hard drives are the most popular hard drives in use today replacing the PATA hard drives.

Description
Parallel ATA
Serial ATA
Hard Drives
Transfer Speed ATA 33MB/s or UDMA-2
ATA 66MB/s or UDMA-4
ATA 100MB/s or UDMA-5
ATA 133MB/s or UDMA-6
SATA 1.5 150MB/s
SATA 3.0 300MB/s
SATA 6.0 600MB/s
SATA 1969MB/s

 

Cable Length

 

36 inches

 

40 inches

 

Cable Pins

 

40

 

7

 

Power Connector Pins

 

4

 

15

 

Power Consumption

 

5V

 

250mV

 

Hot Swappable

 

No

 

Yes

 

Device per cable

 

2

 

1


Hardware, Configurations & Pictures

The following pictures show where to connect a Parallel ATA Hard Drive and a Serial ATA Hard Drive in the motherboard


PATA controllers
Primary and Secondary IDE controllers or EIDE ports

Serial ATA controllers


SATA and PATA Cables


7 pin SATA Cable, 40 pin PATA Rounded Cable and 40 pin PATA Flat Cable

PATA 4 pin Molex Connector and SATA 15 pin Power Connector



Parallel and Serial ATA Pin and Power Connectors

CONCLUSION

As you can see Serial ATA Hard Drives are faster and more convenient than most of the Parallel ATA Hard Drives. Expect most computers to ship today with the newer Serial ATA Hard Drives.

special thanks to western digital, seagate, maxtor, directron

 



 



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