i have recently purchased some RAM, according to spec from manufacturer it should work but it does not, 8GBx4 1866mhz i have tried to check and see if i have been sent server RAM instead of what i ordered and paid for, i can not find this Ram anywhere on the internet, can someone help please, CMY8GX3M1A1866C9A is what i have been sent, there is loads of info and for sale of CMZ8GX3M2A1866C9, are these two RAM's the same, any help would be appriciated