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The industry activity backed by real Enhanced IDE products means that IDE has met the challenge in addressing the industry's new requirements. IDE's cost effectiveness and compatibility advantages, matched now with high performance and connectivity attributes make it a solid storage interface solution well into the future. A new comparison of the IDE/EIDE scorecard reveals the successful approach of Enhanced IDE:
Standard AT Interface With Enhanced IDE
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* The IDE interface supports two disk drives. * The IDE interface
supports four IDE devices
with dual channel IDE and
more with multiple IDE
connectors
* IDE is a hard disk only interface. * The IDE interface supports
non-disk peripherals such
as IDE CD-ROM, IDE tape
* The IDE interface is limited to 528MB hard * With LBA, the IDE interface
disk capacity as a result of the Int 13h BIOS supports up to 8.4GB of hard
interface used to access IDE drives. disk capacity.
* The IDE interface is typically limited to 2- * With Mode 4 PIO and multiword
3MB/sec host throughput DMA mode 2, data transfer
rates with IDE drives can be
as high as 16MB/sec
With Enhanced IDE, the IDE interface has become a mass storage interface for personal computers and is no longer simply a disk drive interface.
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