This message was posted using Aspose.Live 2 Forum
I am afraid, we don’t have specific test results for comparing Aspose.Cells with POI regarding memory consumptions. You can evaluate if by yourself conducting the tests. We do have a document for features comparison though, see the document: http://www.aspose.com/documentation/java-components/aspose.cells-for-java/aspose-cells-for-java-vs-open-source-competitors.html
But one thing is certain if you are going to create a worksheet with Im rows and 100 columns (with styles, comments etc.), it would consume lot of memory and will take some time to process the task.
Generally, if a file has 10mb in size, it would consume 10 * 10(times) = 100mb or more memory to complete the process.