Surface with Windows RT and Surface with Windows 8 Pro

Operating System	Windows RT is an exciting new version of Microsoft Windows that is built to run on ARM-based tablets and PCs. Works exclusively with apps available in the Windows Store.	Runs current Windows 7 desktop applications and integrates with your existing enterprise management infrastructure. Use the programs and the apps available in the Windows Store.
Productivity	Get more done with up to 8 hours of battery life. Surface with Windows RT comes installed with Microsoft Office Home and Student 2013 RT Preview¹.	Surface with Windows 8 Pro supports the full Office experience. Run Outlook, Word, SharePoint Designer, PowerPoint and more. Surface with Windows 8 Pro can run all of the applications that you’ve used on previous version of Windows.
Applications	Microsoft Office Home and Student 2013 RT Preview1, (Word, PowerPoint, Excel, OneNote); Windows Mail and Messaging; SkyDrive; Internet Explorer 10; Bing; Xbox Music, Video, and Games.	Windows Mail and Messaging; SkyDrive; Internet Explorer 10; Bing; Xbox Music, Video, and Games.
Security	Surface with Windows RT features device encryption and comes with Windows Defender.	Windows 8 Pro provides enhanced networking and IT management. Surface with Windows 8 Pro is secured with BitLocker drive encryption, use Remote Desktop, Active Directory, and Client Hyper-V. Compatible with third party applications.
Connectivity	Always connected, even when in standby mode. Connected standby keeps apps up-to-date.	Connectivity off when hibernating/sleeping to preserve battery.
Thinness	9.30mm	13.5mm
Weight	1.5lbs	2.0lbs
Battery	31.5 W-h	42 W-h
Storage	32GB, 64GB	64GB, 128GB
Screen	10.6”, 16:9, 1366x768	10.6”, 16:9, 1920x1080
Ports	Stereo speakers Full-size USB 2.0 microSDXC card slot Headset jack HD video out port Cover port	Stereo speakers Full-size USB 3.0 microSDXC card slot Headset jack Mini DisplayPort  Cover port