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A-Data Memory 1024MB 240Pin DIMM DDR2-533 Unbuffer Non-ECC

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Description

A-DATA announces the Number-1 Vitesta DDR2-533 module which passes the IntelR Platform Memory Validation in Taiwan, and this excellent module is avaliable now. Its densities are 512MB and other higher density module will be phased in soon. This module configuration is by 32M x 16 (512Mbit) die, 8 pcs dies in 1 rank.

4-bit prefectch
DDR2 archieves the high-speed by four times the transmission amount of data . It also doubles the data rate of DDR. In the 4-bit prefetch architecture, READ or WRITE can achieve the four times the amount of data in a really internal bus clock. This is why the DDR2 can operate in four times faster than the internal operation frequency.

ODT (On Die Termination)
In DDR2, it is composed the termination resistor inside which is applied to match the transmission impedance on the mainboard. It will greatly attenuate the reflected noise resulted from last signals which improves a clear logic-level to avoid the reception of error data.

OCD (Off Chip Driver) Calibration
OCD is the Input/Output driver resistance which applied to adjust the cross-voltage to equalize the pull-up and pull-down signal. It will greatly help to the noise-rejected quality from DDR2 module to chipset in mainboard.

Posted CAS & Additive Latency (AL)
In a posted CAS (Column Address Strobe) operation, a CAS signal (READ/WRITE command) can be input to the next clock after RAS (Row Address Strobe) signal (active command) input. The CAS command is held by the module side and executed after the additive latency (0, 1, 2, 3 and 4). It is easier controller design by avoiding collision on the command bus, and improves the command and data bus efficiency due to simple command order. It also improves the practical memory bandwidth by removing the bubble.

Vitesta DDR2 modules suit all Notebook computers to improve whole PC performance!

* 200-pin small outline DIMM
* Density:256MB / 512MB / 1GB / 2GB
* Maximum 5.3GB/s bandwidth
* JEDEC standard 1.8 +/- 0.1V power supply
* 32M x 16 or other component configuration
* CAS Latency:5
* 4 Bank
* Off-chip driver (OCD) impedance adjustment, and on die termination (ODT)
Release date NZ
August 31st, 2005
Manufacturer code:
1024MB DDR2-533 A-Da
Manufacturer Code
1024MB DDR2-533 A-Da
Manufacturer
Product ID
1474980

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