Supported Operating Systems: Windows 7; Windows Server 2003 R2 (32-Bit x86); Windows Server 2003 R2 x64 editions; Windows Server 2008; Windows Server 2008 R2; Windows Vista Service Pack 1; Windows XP Service Pack 3
Note: SharePoint Designer 2010 only connects to SharePoint 2010. To connect to SharePoint 2007 and earlier sites you must continue to use SharePoint Designer 2007. If you elect to install both applications side-by-side, you must download the 32-bit version of SharePoint Designer 2010, and install it after installing SharePoint Designer 2007. Please also note that 64 bit Office applications will not run if SharePoint Designer 2007 is installed; 64-bit Office 2010 applications should only be used if not connecting to SharePoint 2007 servers.
Computer and processor: 500 MHz processor or higher.
Memory: 256 megabytes (MB) of RAM or higher.
Hard disk:2.5 GB; a portion of the disk space will be freed after installation if the original download package is removed from the hard drive.
Additional Operating System Details: Terminal Server and Windows on Windows (WOW) (which allows installing 32-bit versions of Office 2010 on 64-bit operating systems) are supported.
Additional: Use of graphics hardware acceleration requires DirectX 9.0c compatible graphics card with 64 MB or higher video memory. Requirements and product functionality can vary based on the system configuration and operating system.