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Samsung Replaces Hdd With Flash

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Hardware

The solid-state disk (SSD) uses memory chips in place of the mechanical recording system used inside hard drives, and has several advantages including lower power consumption and higher data rates. Flash memory technology isn't new and the advantages have been known for years but such solid-state disks have never been commercially produced before because flash has one big disadvantage over hard-drive storage: it's much more expensive.

Samsung announced basic details of the SSD on Monday but declined to provide any information about its price.

The Seoul company is planning SSDs with parallel ATA (Advanced Technology Attachment) interfaces in capacities up to 16GB. The 16GB devices will contain 16 memory chips holding 8 gigabits each, it says. Such chips sell for about $55 each on the spot memory market, according to DRAM Exchange Tech. That would put the chip cost of the 16GB SSD at almost $900.

Because Samsung is a major manufacturer of flash memory chips, it can likely source the chips internally at a lower price. Even so, it will be difficult to compete with hard drive makers on cost. Laptop drives at capacities of up to 30GB can easily be found for less than $200.

The SSD operates silently, consumes 5 percent of the power used by a hard drive, and weighs less than half as much. It can read data at up to 57MB per second and write it at up to 32MB per second.

Because SSDs don't use moving parts, they are much more resistant to harsh environmental conditions or shock and are thus suitable for industrial or military markets, says Samsung. Such users are less focused on low-cost components than the consumer market.

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