Non ECC or nonParity memory with have either 2, 4, 8, 16, or 32 chips on the memory module.

ECC or Parity memory will have either 3, 6, 9, 12, 18, or 36 chips on the memory module.

you can check if your ram support ECC with dmidecode:

dmidecode -t memory | grep -i ecc
Error Correction Type: Single-bit ECC

ECC memory maintains a memory system immune to single-bit errors: the data that is read from each word is always the same as the data that had been written to it, even if a single bit actually stored, or more in some cases, has been flipped to the wrong state. Some non-ECC memory with parity support allows errors to be detected, but not corrected; otherwise errors are not detected.