To take advantage of today's more powerful processors, we recommend PC133 memory. This 8 nanosecond memory is certified to run with 133MHz bus speeds. It matches today's high-megahertz processors stride for stride to give you maximum performance and speed. Surf faster, run more problems simultaneously, run memory-hungry applications easily. PC133 is the smart choice.
ECC Modules may only be installed on systems that support ECC. You cannot mix ECC and Non-ECC modules even if your system supports ECC.
ECC Memory is used primarily in Server based computers.