When did the first DDR memory chips come out?

JEDEC has set standards for data rates of DDR SDRAM, divided into two parts. The first specification is for memory chips, and the second is for memory modules. The first retail PC motherboard using DDR SDRAM was released in August 2000. Comparison of memory modules for portable/mobile PCs ( SO-DIMM ).

Which is the fifth generation of DDR memory?

DDR5 SDRAM, in computing interface development, is the abbreviation for the fifth generation of Double Data Rate Synchronous Dynamic Random Access Memory.

What are the characteristics of a DDR memory module?

Module characteristics. A module of any particular size can therefore be assembled either from 32 small chips (36 for ECC memory), or 16 (18) or 8 (9) bigger ones. DDR memory bus width per channel is 64 bits (72 for ECC memory). Total module bit width is a product of bits per chip and number of chips.

What’s the difference between DDR SDRAM and PC-1600?

There is no architectural difference between DDR SDRAM modules. Modules are instead designed to run at different clock frequencies: for example, a PC-1600 module is designed to run at , and a PC-2100 is designed to run at .

What does the number after DDR mean on a memory card?

Occasionally DDR memory is referred to by a “friendly name” like “DDR3-1066” or “DDR4-4000.” When written this way, the number after “DDR” represents the generation. The number after the generation refers to the component’s data transfer rate per second (/s).

What’s the difference between DDR and ECC memory?

DDR memory bus width per channel is 64 bits (72 for ECC memory). Total module bit width is a product of bits per chip and number of chips. It also equals number of ranks (rows) multiplied by DDR memory bus width. Consequently, a module with a greater number of chips or using ×8 chips instead of ×4 will have more ranks.