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SATA
SATA or Serial ATA (Advanced Technology Attachment) is the next
generation drive interface, following the traditional Parallel ATA (PATA).
Anyone who has looked into a computer is familiar with the flat, 40-wire parallel
cables that connect the hard drive, CDROM and other devices to their controllers.
PATA has been the standard and has served well, but it has also had shortcomings.
Cables length limited to 18 inches (46 cm)often made connections difficult and
also clogged cases blocking airflow, while cooling has become essential. Though
rounded cables became available, the most advanced PATA drives (Ultra ATA/133)
hit the maximum parallel transfer rate of 133 MB/ps. With the speed of CPUs,
RAM and system buses improving, designers saw PATA would soon be slowing advanced
drive efficiency in system architecture.
Serial ATA has definite key advantages over PATA. Cables are very thin with
small 7-pin connectors. They can be up to 3 feet (1 meter), and are easily organized
and help airflow inside the case. SATA also has a far lower power requirement
of just 250 mV compared to PATA's 5-volt requirement, and with chip core voltages
declining, this speaks well of SATA's future. Setup is greatly simplified, and
the technology even allows drives to be removed or added while the computer
is running.
Capacity
One major advantage of SATA compared with IDE(PATA) is the available capacity
of the hard drive. This capacity, or "density," is based on the number
of sectors that can be placed on the spinning disks inside the hard drive. The
maximum capacity of these drives has not increased in several years as the development
for the older IDE technology has stopped.
In contrast, as hardware developers have shifted their focus to SATA drives,
the capacity of this format has increased. It is common to find SATA hard drives
with space measured in terabytes, or 1,012 gigabytes. These high capacities
cannot be easily achieved using IDE technology.
Speed
Another advantage for SATA, and disadvantage for IDE, is hard drive speed. Depends
on the speed, drive can read data slower or faster. A device may have massive
storage capacity, but if it cannot be accessed in a timely manner, the data
is useless.
SATA technology was developed with speed as a primary focus. The first version
of SATA had a maximum speed of 150 megabytes per second, which was later increased
to 300 megabytes per second. For comparison, IDE hard drives have a speed of
only 130 megabytes per second, which is less than half the amount.
For basic computing tasks such as word processing, hard drive speed is not as
important. However, for high-demand applications such as video editing and gaming,
the speed becomes more critical. The speed SATA drives allows makes them valuable
for more demanding users even with a higher prices.
Compatibility
Compatibility is another consideration for hard drives. This indicates the ability
of a drive to work with different devices. When it comes to compatibility, neither
IDE nor SATA has the complete advantage. Instead, each has advantages for different
kinds of compatibility.
For users looking to stay on the cutting edge in the future, however, SATA has
better compatibility. This format is used more often in newer systems. In fact,
almost all newly manufactured computers will not work with the older IDE format.
Using SATA ensures new devices and upgrades will work well for years to come.
For Free Expert Advice, call us toll free at 1-866-817-4049, 7:30am-5:30pm PST.
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