This RAM feature can detect and possibly fix errors within memory. What is it?

ECC stands for Error-Correcting Code. It is a type of memory that uses special codes to detect and correct errors that occur in the data stored in memory. ECC is typically used in server and workstation computers where data integrity is critical.
Non-ECC RAM does not have the ability to detect or correct errors. This means that if an error occurs in the data stored in non-ECC RAM, the error will not be detected and may corrupt the data.
Non-parity RAM is a type of memory that uses parity checking to detect errors. Parity checking is a method of detecting errors by counting the number of 1s in a data word. If the number of 1s is even, the data is assumed to be correct. If the number of 1s is odd, an error has occurred. However, parity checking cannot correct errors, it can only detect them.
Parity RAM is a type of memory that uses parity checking and additional error-correction information to detect and correct errors. Parity RAM is more expensive than non-ECC RAM, but it is more reliable.