I tried to put Hynix 16gb (ECC) stick into one of slot and it shows C1 on the motherboad. i am not sure why it wouldnt work, please tom help me. Thank you
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  1. if its more than 4GB per stick it wont work on that board no matter what u do, u r limited to 4GB per DIMM.....first time i heared of a 16GB ram tho......
  2. Welcome to Tom's Forum! :)

    ref GA-X58A-OC -
    "6 x 1.5V DDR3 DIMM sockets supporting up to 24 GB of system memory
    * Due to Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than 4 GB.
    3/Dual channel memory architecture
    Support for DDR3 2200/1333/1066/800 MHz memory modules
    Support for non-ECC memory modules
    Support for Extreme Memory Profile (XMP) memory modules"

    C1 is detection of ECC RAM.

    Oddly, the Gigabyte GA-X58A-OC does support Xeon CPU's but there's no ECC listed support. Furher, the only '16GB/stick' is RDIMM which is not supported - period. IF Gigabyte made an error listing only 'non-ECC' then only UDIMM (unbuffered) would be supported -- if ECC is supported. Clearly, unless you have a Xeon CPU then forget any type of ECC RAM; none of the i7's (Gulftown or Bloomfield) support ECC.

    Contact Gigabyte to see IF ANY ECC is supported, or exchange RAM for non-ECC and you can use up to 6x8GB (48GB) but for now that's it.
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