Saturday, August 14, 2010

DRAM organization

Written in the form of 64M×4, where 64M is a number of storage units (64 million), x4 (pronounced "by 4") — number of bits per chip, which equals the number of bits per storage unit. There are ×4, ×8, and ×16 DDR chips. The ×4 chips allow the use of advanced error correction features like Chipkill, memory scrubbing and Intel SDDC, while the ×8 and ×16 chips are somewhat more expensive.

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