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Memory Module Specification

DESCRIPTION:

This document describes ValueRAM's 512M x 72-bit 4GB (4096MB) DDR333 CL2.5

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)

DDR333 SDRAM. This 184-pin DIMM uses gold contact fingers and requires +2.5V. The

electrical and mechanical specifications are as follows:

FEATURES:

Clock Cycle Time (tCK) 6ns (min.) / 12ns (max.)

Row Cycle Time (tRC) 60ns (min.)

Refresh Row Cycle Time (tRFC) 72ns (min.)

Row Active Time (tRAS) 42ns (min.) / 70,000ns (max.)

Single Power Supply of +2.5V (+/- .2V)

Power 11.500 W (operating)

UL Rating 94 V - 0

Document No. VALUERAM0412-001.A00

05/10/05

Figure 1: KVR333D4R25/4G 184-Pin DIMM

KVR333D4R25/4G

4GB 512M x 72-Bit DDR333

CL2.5 Registered 184-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 1.200" (30.48mm).

Memory Module SpecificationDESCRIPTION:This document describes ValueRAM's 512M x 72-bit 4GB (4096MB) DDR333 CL2.5SDRAM (Synchronous DRAM) "d

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