Kingston DDR3 1600MHz ECC 4 GB Registered Single Rank

ECC technology monitors transparently and in real time the integrity of data stored in memory. It is able to find and fix a bug in one bit and detect the error in two bits. Some memory controllers are able in cooperation with ECC memory to repair the mistakes of greater scope. Most server boards require memory with ECC support. In cooperation with parity checking memory achieves maximum control of data transferred.

Registered memory are equipped with a controller that controls access to individual memory modules and thus facilitates the work of the memory controller on the motherboard or processor. The memory is outwardly behaves as a single module - chip index - which takes care of the writing and reading of individual memory cells and controller forward to the outcome of these operations. This increases the efficiency of memory access and processing speed, even when using more memory modules simultaneously. Some server boards require registered memory.

Memory has one individually addressable area (memory rank) with 72-bit bus width (64-bit data and 8-bit ECC code). Most server chipsets have limited the number of memory rank or directly specified memory configuration for each slot, so you need when buying a watch that figure with respect to future upgrades - when you reach the full rank of memory on the motherboard, you can not add another module, even though some remained free memory slots.