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@@ -7,6 +7,9 @@ on your behalf and expose its location via GitHub Environment Variables.
 
 Dev Drives use `ReFS` under the hood to provide optimizations that are targeted for Developer workflows.
 By using a Dev Drive, you can increase performance significantly on a variety of developer workloads.
+
+Workloads that involve high IO, such as building and testing will likely see an **improvement of
+about 25% or more on average**, which can translate substantial to speed, quota, and cost savings.
 See [related blog post](https://devblogs.microsoft.com/visualstudio/devdrive/).
 
 You can still decide to use something else than `ReFS` and get speed benefits of