2GB 240-pin DDR2 SDRAM Fully Buffered DIMM Module with ECC PC2-5300 667MHz...1.8V, 256MX72, 333MHz with CAS latency 5. The AVF7256B61E5667F0 is a fully buffered DDR2 SDRAM DIMM module. This module is JEDEC Pinout compatible DDR2 SDRAM Buffered DIMM with heatsink spreader. The module provides a high memory bandwidth, large capacity channel solution that has a narrow host interface. The module utilizes commodity DRAMs isolated from the channel behind a buffer on the DIMM. A 256 byte serial EEPROM on board can be used to store module information such as timing, configuration, density, etc. The AVF7256B61E5667F0 memory module is 2GByte and organized as 256MX72 ECC array using (18) 128MX8 DDR2 SDRAMs in FBGA packages. The module PCB is fabricated using the latest technology design, six-layer printed circuit board substrate construction with low ESR decoupling capacitors on-board for high reliability and low noise.