I bought 128GB of Hynix RDIMMs off ebay. The (slightly lifted) label indicates that they are (as advertised) Hynix model HMT84GR7AMR4A-H9, which is 1333 MHz registered RAM.
However, lswh -C memory returns
description: DIMM DDR3 1066 MHz (0.9 ns)
product: HMT84GR7AMR4A
vendor: Hynix Semiconducto
and dmidecode -t 17 gives me Speed: 1066 MT/s.
And indeed, there exists a Hynix submodel of part HMT84GR7AMR4A (with the -G7 suffix) which is 1066 MHz. It occurs to me that maybe the vendor switched labels.
I'm not confident though. If my motherboard guessed the RAM clock wrong (there is no setting), would lshw and dmidecode be reporting a speed of 1066? Or are those hardcoded strings coming back from the DIMM?
