PowerPivot for Microsoft Excel 2010 - x64 for Windows

You can process large data sets with about the same performance as processing a few hundred rows by leveraging the PowerPivot in-memory engine and its efficient compression algorithms, use PowerPivot to directly access trusted premium and public domain data from DataMarket section of Windows Azure Marketplace, integrate data from a multitude of sources, including corporate databases, spreadsheets, reports, text files, and Internet data feeds, go beyond standard Excel expressions and use PowerPivot's Data Analysis Expressions (DAX) language to perform powerful data manipulations, and follow relationships between tables as in a database and define sophisticated calculations using familiar and intuitive expressions.