Does anyone know where I could find performance metrics when a hybrid database has changed into a pure OLTP database (before and after performance metrics)?

We want to get a general idea of how much performance improvement can be expected when the batch queries are going to be run against a data warehouse on a different server. I understand that performance all depends on the amount of data that the queries retrieve.

Im just looking for information on a general database that has changed for OTLP use only.

Thank you.