IBM 32 GB DDR3 1333MHz ECC LRDIMM 4Rx4

High quality memory module LRDIMM is reduced sampling and determining for performance systems, servers and multiprocessor computers with support ECC technology. Technology ECC checks transparently and in real time integrity of data stored in memory. It is able to find and fix an error in a single bit error and detect two bits. Some memory controllers can in cooperation with ECC memory repair the errors of greater magnitude. Most server boards require memory with ECC support.
Memory has four separately addressable area (Memory rank). The majority of server chipsets has limited memory rank or directly specified memory configuration for each slot, so you must follow when buying this figure with respect to future upgrades - if you reach the full rank of memory on the motherboard, you can not add another module even if remained free memory slots.
Memory Module s organizations chips "x4" are designed for the most demanding applications, supporting a broad range of professional technologies such as multiple-bit error correction, Chipkill, memory scrubbing and Intel Single Device DataCorrection (SDDC), so they are ideal for mission-critical applications and critical servers.