A-DATA announces the Number-1 DDR2-667 module which passes the ATI QVL in Taiwan, and this excellent module is avaliable now. Its density is 512MB, and other higher density module will be phased in soon. This module configuration is by 64M x 8 (512Mbit) die, 8 pcs dies in 1 rank. This DDR2 SO-DIMM is designed to meet the 667MHz data-rate specification of the JEDEC (Joint Electron Device Engineering Council) standard, but it seems to own the huge potentiality to draw out higher performance in A-DATA laboratories. By 1.8V low-voltage application, DDR2 modules can reduce about 50% power consumption, which is compared with 2.5V (DDR) power supply on the same operation speed. So it is an environment-friendly product. In order to achieve so amazing high operation speed, A-DATA applies the lower parasitic-loading FBGA (Fine-pitch BGA) package to run in full-speed without extraneous loading. Compared with DDR, DDR2 owns four key technologies pave the way to high-speed operation and low power consumption. 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.

240-pin small outline DIMM  Maximum 5.3GB/s bandwidth  JEDEC standard 1.8 +/- 0.1V power supply  64M x 8 component configuration  CAS Latency：5  4 Bank  Off-chip driver (OCD) impedance adjustment, and on die termination (ODT)

Award Name Date Location Media PCWeekly Recommend 2006 Hong Kong PCWeekly MAGAZINE National Sliver Awards of Excellence 2005 Taiwan Symbol of Excellence Award 2005 Taiwan Best Choice of COMPUTEX TAIPEI 2005 Award 2005 Taiwan Editor Recommend 2005 Taiwan Computer DIY MAGAZINE

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A-DATA Part No. Capacity Description AD2U667H256M5 256MB ADATA DDR2 U-DIMM 667 32X8 256MB 5 AD2U667E256M5-B 256MB ADATA DDR2 U-DIMM 667 32X16 256MB 5 - BULK AD2U667E256M5 256MB ADATA DDR2 U-DIMM 667 32X16 256MB 5 AD2U667D512M5-R 512MB ADATA DDR2 U-DIMM 667 64X16 512MB 5 - RETAIL AD2U667A512M5-B 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5 - BULK AD2U667A512M5 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5 AD2U667A512M5-DRH 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5-DUAL RETAIL+HS AD2U667A512M5-BH 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5-BULK+HS AD2U667A512M5-S 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5 - SINGLE TRAY AD2U667E512M5 512MB ADATA DDR2 U-DIMM 667 32X16 512MB 5 AD2U667D512M5-B 512MB ADATA DDR2 U-DIMM 667 64X16 512MB 5 - BULK AD2U667A512M5-2 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5 - DUAL-KIT RETAIL AD2U667D512M5 512MB ADATA DDR2 U-DIMM 667 64X16 512MB 5 AD2U667A512M5-R 512MB ADATA DDR2 U-DIMM 667 64X8 512MB 5 - RETAIL AD2U667H512M5 512MB ADATA DDR2 U-DIMM 667 32X8 512MB 5 AD2U667B1G5-BH 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5-BULK+HS AD2U667A1G5-BH 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 - BULK+HS AD2U667I1G5 1GB ADATA DDR2 U-DIMM 667 128X4 1GB 5 AD2U667A1G5-R 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 - RETAIL AD2U667B1G5-B 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5 - BULK AD2U667B1G5 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5 AD2U667A1G5-2 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 - DUAL-KIT RETAIL AD2U667A1G5-DRH 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5-DUAL RETAIL+HS AD2U667B1G5-S 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5 - SINGLE TRAY AD2U667D1G5 1GB ADATA DDR2 U-DIMM 667 64X16 1GB 5 AD2U667A1G5-B 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 - BULK AD2U667B1G5-RHS 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5 - RETAIL+HS AD2U667B1G5-R 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5 - RETAIL AD2U667A1G5 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 AD2U667A1G5-RHS 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 - RETAIL+HS AD2U667A1G5-S 1GB ADATA DDR2 U-DIMM 667 64X8 1GB 5 - SINGLE TRAY AD2U667B1G5-2 1GB ADATA DDR2 U-DIMM 667 128X8 1GB 5 - DUAL-KIT RETAIL AD2U667B2G5-BH 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5-BULK+HS AD2U667B2G5-S 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5 - SINGLE TRAY AD2U667B2G5 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5 AD2U667B2G5-RHS 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5 - RETAIL+HS AD2U667B2G5-R 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5 - RETAIL AD2U667B2G5-2 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5 - DUAL-KIT RETAIL AD2U667B2G5-DRH 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5-DUAL RETAIL+HS AD2U667B2G5-B 2GB ADATA DDR2 U-DIMM 667 128X8 2GB 5 - BULK AD2U667C4G5-B 4GB ADATA DDR2 U-DIMM 667 256X8 4GB 5 - BULK AD2U667C4G5 4GB ADATA DDR2 U-DIMM 667 256X8 4GB 5