Kingston KVR400D2D4R3-4G User Manual
Memory Module Specications
KVR400D2D4R3/4G
4GB 512M x 72-Bit DDR2-400
CL3 Registered 240-Pin ECC DIMM
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 components 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
ngers and requires +1.8V. The electrical and mechanical
specications are as follows:
Note: The module dened in this data sheet is one of several congurations available under this part number. While all congurations are compatible, the DRAM
combination and/or the module height may vary from what is described here.
Figure 1: KVR400D2D4R3/4G 240-Pin DIMM
SPECIFICATIONS
Clock Cycle Time (tCK) CL=3 5ns (min.) / 8ns (max.)
Row Cycle Time (tRC) 55ns (min.)
Refresh to Active/Refresh 105ns
Command Time (tRFC)
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
Kingston.com Document No. VALUERAM0449-001.A00 06/23/05
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