DDR3 SDRAM or Double Data Rate three Synchronous Dynamic Random Access
Memory is a random access memory technology used for high speed storage
of the working data of a computer or other digital electronic device.
DDR3 SDRAM is an improvement over its predecessor, DDR2 SDRAM.
The
primary benefit of DDR3 is the ability to run its I/O bus at four times
the speed of the memory cells it contains, thus enabling faster bus
speeds and higher peak throughput than earlier memory technologies. The
DDR3 standard allows for chip capacities of 512 megabits to 8 gigabits,
effectively enabling a maximum memory module size of 16 gigabytes.
The
DDR3 standard allows for chip capacities of 512 megabits to 8 gigabits,
effectively enabling a maximum memory module size of 16 gigabytes. DDR3
DIMMs have 240 pins, the same number as DDR2, and are the same size,
but are electrically incompatible and have a different key notch
location.
Features:
The DDR3 components are twice as fast as today's highest speed DDR2 memory products.
The first computer systems equipped with the advanced DDR3 memory technology are expected to arrive in 2007.
The main advantages of DDR3 are the higher bandwidth and the increase in performance at low power.
The DDR3 SDRAM devices will offer data transfer rates up to 1600 Mbps (megabits per second).
The supply voltage for the memory technology is being reduced from
1.8 volts for DDR2 to just 1.5 volts for DDR3 targeting a work day
equivalent of battery time. The voltage reduction limits the amount of
power that is consumed and heat that is generated in connection with
the increase in bandwidths.
Introduction of asynchronous RESET pin.
Support of system level flight time compensation.
On-DIMM Mirror friendly DRAM ballout.
Introduction of CWL (CAS Write Latency) per speed bin.
On-die IO calibration engine.
Advantages compared to DDR2:
Higher bandwidth (up to 1600 Mbps)
Performance increase at low power
Longer battery life
Enhanced low power features and thermal design
DDR3 is the latest in high speed memory. These speeds are available: PC3-8500 (DDR3-1066), PC3-10667 (DDR3-1333), PC3-12800 (DDR3-1600), PC3-14900
(DDR3-1866) Memory.
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