The ThinkCentre 256MB or 512MB PC2-6400 DDR2-800 SDRAM UDIMM Memory offers:
Maximum data transfer rate of up to 6,400 MBps
240-pin UDIMM with gold-plated leads
Serial presence detect and decode functions
PC2-5300 and PC2-6400 memory can coexist on one system, but will operate at PC2-5300 speed.
Data transfer rate may vary based upon many factors and is often less than the maximum possible.
PC2-6400 DDR2 SDRAM memory upgrades -- The 6400 is a figure derived from twice the memory-side bus clock frequency (400 MHz x 2; data transfers can occur on both edges of the clock) times the module data width (64 bits / 8 bits/byte = 8 bytes) = 6,400. This is the maximum data rate; the units are MBps.
Column Address Strobe (CAS) Latency (CL) of 6 (memory bus clock cycles) for PC2-6400 memory.
Non-parity mode organized as 32M x 64, 64M x 64 and 128M x 64 respectively.