PowerPivot for Excel 2010 is a data analysis tool that delivers unmatched computational power directly within the software users already know and love—Microsoft Excel.
With this add-in to Excel, you can transform mass quantities of data with significant speed into meaningful information to get the answers you need.
You can easily share your findings with others. PowerPivot can even help your IT department improve operational efficiencies through SharePoint-based

Supported Operating Systems: Windows 7
      Windows XP with Service Pack (SP) 3 (32-bit),
      Windows Vista with SP1 (32-bit or 64-bit),
      Windows Server 2003 R2 (32-bit or 64-bit) with MSXLM 6.0 installed ,
      Windows Server 2008 with SP2 (32-bit or 64-bit),
      Terminal Server and windows on Windows (WOW) (which allows installing 32-bit versions of Office 2010 on 64-bit operating systems) are supported.

Hardware requirements:
    * 500 MHz 32-bit or 64-bit processor or higher
    * Minimum of 1 GB of RAM (2 GB or more is recommended.)
    * 3.5 GB of available hard disk space
    * Internet access