Before revision: non-posted write requires that a bus transaction respond with a write completion response to indicate success or failure of the transaction, and is naturally much slower than a posted write since it requires a round trip delay similar to read bus transactions.
After revision: non-posted write requires that a bus transaction respondsA with a write completion response to indicate success or failure of the transaction, and is naturally much slower than a posted write since it requires a round trip delay similar to read bus transactions.