I recently bought some no-name ECC ram from eBay, which has something quite interesting. It has hynix dies which seem to hit 2666 (and even above) fairly well, but the layout has me scratching my head. I’ve heard online that ECC dimms will have an odd number of chips for parity. In my case, my 16GB sticks are dual rank, with 5 dies on one side, and 4 on the other.
My understanding of ranks is that the CPU can access either rank at any time, to allow for interleaved/parallelized memory access. How is ECC even happening if only one side has an odd amount of chips? Does this mean only half of my ram’s capacity is actually ECC?
Windows reports my Memory as multi-bit detectable, and linux says similarly. I have had some issues trying to produce errors on this ram to validate the ECC functionality, however.
Anyone familiar enough with ECC ram to advise?
Thanks in advance!