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Memory Module Specification

DESCRIPTION:

This document describes ValueRAM's 512M x 72-bit 4GB (4096MB) DDR2-400 CL3

SDRAM (Synchronous DRAM) "dual rank" registered ECC memory module.The compo-

nents on this module include eighteen stacked 512M x 4-Bit (thirty-six 256M x 4-bit)

DDR2-400 SDRAM. This 240-pin DIMM uses gold contact fingers and requires +1.8V. The

electrical and mechanical specifications are as follows:

FEATURES:

Clock Cycle Time (tCK) CL=3 5ns (min.) / 8ns (max.)

Row Cycle Time (tRC) 55ns (min.)

Refresh to Active/Refresh Command Time (tRFC) 105ns

Row Active Time (tRAS) 40ns (min.) / 70,000ns (max.)

Single Power Supply of +1.8V (+/- .1V)

Power 5.310 W (operating)

UL Rating 94 V - 0

Document No. VALUERAM0449-001.A00

06/23/05

Figure 1: KVR400D2D4R3/4G 240-Pin DIMM

KVR400D2D4R3/4G

4GB 512M x 72-Bit DDR2-400

CL3 Registered 240-Pin ECC DIMM

Note: The module defined in this data sheet is one of several configurations available under this part number. While

all configurations are compatible, the DRAM combination and/or the module height may vary from what is described

here. However, in no configuration will the module height exceed 1.250" (31.75mm).

(Units = millimeters)

Memory Module SpecificationDESCRIPTION:This document describes ValueRAM's 512M x 72-bit 4GB (4096MB) DDR2-400 CL3SDRAM (Synchronous DRAM) "d

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Kingston Technology KVR400D2D4R3/4G Datový list