When talking DDR3 Memory what is meant by unbuffered & non ECC

When talking DDR3 Memory what is meant by unbuffered & non ECC
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More about talking ddr3 memory meant unbuffered
  1. There are (3) types of RAM: unbuffered non-ECC, unbuffered-ECC {UDIMM}, and registered ECC {RDIMM}. ECC 'Error-Correcting Code memory' is memory with parity checking used to correct the errors.

    ECC -> http://en.wikipedia.org/wiki/ECC_memory
    Registered -> http://en.wikipedia.org/wiki/Registered_memory

    Most consumer MOBO's use non-ECC and that RAM has no hardware registry between RAM and the IMC and most importantly it's significantly cheaper.

    non-ECC -> http://en.wikipedia.org/wiki/Unbuffered_memory

    Your CPU must support ECC to use any ECC RAM, if running Intel based systems then Xeon is required and AMD most of their consumer CPUs support both types of UDIMM, but as I understand it only the Opteron supports RDIMM.
  2. What he said ^

    Also, I almost certain ECC is commonly used in servers as apposed to home desktops.
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