Ironically, it's the software that is the weak point of the Microsoft Surface RT, and it feels strange to write that about the world's biggest software company. It may look and feel like Windows 8, the fact that you're limited to only Word, Excel, PowerPoint and OneNote on the desktop, along with the lack of enough (quality) apps in the Windows Store, really works against the Surface RT.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips