What is the difference between ECC and Non-ECC modules?
ECC stands for Error Correcting Code. It is a special feature in RDRAM modules that prevents malfunctions in the chip. But, ECC must be supported by the system in order to use ECC modules. Furthermore, one cannot mix ECC and Non-ECC chips even if the system supports ECC memory. At any given time, all the memory installed in a system must be of the same type. Most systems that support ECC are sold by the manufacturers with Non-ECC memory installed, so be sure you know what kind of memory is currently in your system before you purchase an upgrade if you are planning on keeping your old chips.
