Ddr2

DDR2 Memory
DDR2 is the next-generation evolution of DDR memory technology. DDR2 memory features faster speeds, higher data bandwidths, lower power consumption, and enhanced thermal performance. Starting in 2004, DDR2 was launched for use in desktops, servers, notebooks, telecommunications/ networking and other platforms in the following form-factors: • Unbuffered DIMMs, ECC or non-ECC •Registered ECC DIMMs • Fully Buffered DIMMs • SODIMMs • MicroDIMMs • Mini Registered DIMMs • Custom Modules DDR2 memory modules share the same module dimensions as equivalent DDR memory modules, but are not backwardcompatible due to incompatible module connections (number of pins), voltage, and DRAM technology. DDR2 memory modules have a different key or notch than samesized DDR modules toprevent their insertion into an incompatible memory socket.
DDR2 DDR

Unbuffered DIMMs Registered DIMMs Fully Buffered DIMMs SODIMMs Mini Registered DIMMs MicroDIMMs

240-pin 1.8 V 240-pin 1.8 V 240-pin 1.8 V 200-pin 1.8 V 244-pin 1.8 V 214-pin 1.8 V

184-pin 2.5 V 184-pin 2.5 V — 200-pin 2.5 V — 172-pin 2.5 V

Naming conventions
DDR2 memory was developed by JEDEC, the memoryindustry’s standards organization of which Kingston® is a member company. DDR2 memory chips and modules use a naming convention similar to that used for the current DDR memory:
Memory Speed Memory Chip Classification Module Classification Module Bandwidth Dual-Channel DDR2 System Bandwidth

Memory chips
DDR memory chips are made with the familiar black resin Thin Small Outline Package (TSOP) aswell as other chip types. DDR2 memory can no longer be manufactured into TSOP chips, and are only specified to be FBGA (Fine-pitch Ball Grid Array) chips. TSOP and FBGA chips are shown below:

400MHz 533MHz 667MHz 800MHz

DDR2-400 DDR2-533 DDR2-667 DDR2-800

PC2-3200 PC2-4200 PC2-5300 PC2-6400

3.2GB/sec 4.3GB/sec 5.3GB/sec 6.4GB/sec

6.4GB/sec 8.6GB/sec 10.6GB/sec 12.8GB/secMost common SDRAM and DDR memory chips – TSOP chips DDR2 memory in FBGA chips only

Memory modules

240-pin DDR2 DIMM

DIMM module key must match socket

DDR2 chips are also internally different from DDR memory chips. For example, DDR2 memory chips feature: • 1.8-V operation, delivering over 50 percent lesspower usage as well as generating less heat compared to DDR • Memory signaltermination inside the memory chip (“On-Die Termination”) to prevent reflected signal transmission errors • Operational enhancements to increase memory performance, efficiency, and timing margins • DDR2 CAS Latencies: 3, 4, and 5

184-pin DDR2 DIMM

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DDR2 Decoder
This reference guide is designed to help you identify our new ValueRAM® DDR2 memory modules byspecification. Whilethis is a representation of a majority of our generic DDR2 modules, naming conventions may vary as necessary. For a complete list, including Intel-validated parts, registered and ECC memory, please visit valueram.com

DDR2 para Notebooks, Computadoras de Escritorio, y(PC2-3200, PC2-4200, PC2-5300,PC2-5300, PC2-6400) DDR2 for Notebooks, Desktops, and Servers Servidores (PC2-3200, PC2-4200,PC2-6400)
Kingston ValueRAM DDR2 DRAM Type: 4: x4 chip DRAM 8: x8 chip DRAM CAS Latency K: Kit + number of pieces Special Designators I: Intel Validated

KVR

400 D2
Speed 400/533/667/800

D 8
Ranks S: Single Rank D: Dual Rank Q: Quad Rank

N 3
N: No–ECC E: ECC S: SODIMM F: FB-DIMM U: MicroDIMM R: Registered

L

K2 /512 I
Capacity (see chart)

L: Very Low Profile M: MiniDIMM P: ParityRegistered

800MHz DDR2 PC2-6400, DIMM, 240-pin, 1.8v

DDR para Servidores (PC2700,64 Non-ECC CL5 512MB KVR800D2N5/512 800MHz 64M x PC3200) 1GB KVR800D2N5/1G 800MHz 128M xRanks Non-ECC CL5 64 KVR800D2N5K2/1G 800MHz 64M x 64 Non-ECC CL5 (Kit of 2) S: Un Solo Rank (Single Rank) R: of 2) Rank Doble (Dual Rank) 2GB KVR800D2N5K2/2GValueRAM de Kingston 800MHz 128M xD:64 Non-ECC CL5 (Kit Registrado...