Is it possible for FB-DIMM memory to be a memory without ECC, or every FBDIMM memory module is ECC?
ECC - is builtin memory errors correction.
FB-DIMM - is type of server memory.
Certainly Fully-Buffered memory can be offered without ECC as the AMB would hide any functionality from the memory controller but given FB memory is generally much more expensive than most other memory types why not go for ECC at the same time and reap the benefit.