We’re about to enjoy the biggest change in Windows since the Rolling Stones helped start Windows 95: when Windows 8 ships later this year, it will come in three key flavours.
Windows 8 is the standard version, Windows 8 Pro has some more features for power users, and Windows 8 RT — the RT is short for “Runtime” — is completely new and completely different. Which one will you want to have on your next PC, your Windows 8 tablet such as Microsoft Surface or your current Windows PC? Let’s explore the options.
Windows RT vs Windows 8: release date
The Windows 8 release date is expected to be October, with Windows RT and Windows 8 tablets arriving in November.
Windows RT vs Windows 8: buying
Windows RT is only available pre-installed on devices. Windows 8 will be available pre-installed on new PCs, as stand-alone retail boxes and as upgrade versions too.
Windows RT vs Windows 8: price
Windows RT is literally priceless, because you can’t buy it, but licensing fees to manufacturers should be significantly less than for Windows 8 or Windows 8 Pro. Windows RT devices are expected to cost less than Windows 8 ones —think Android tablets or the iPad versus Windows laptops — and Windows RT users won’t have to pay for their copies of Office.
Windows RT vs Windows 8: upgrading
This one’s easy: you can’t upgrade to Windows RT from anything, because it’s a brand new Windows for a previously unsupported platform.
If you’re currently on Windows 7 you’ll be able to upgrade to the normal Windows 8 from Starter, Home Basic or Home Premium, but you’ll need to perform a clean installation if you’re running Windows 7 Ultimate or Professional. If you plump for Windows 8 Pro, you can upgrade from any version of Windows 7. As ever, 32-bit installations can only be upgraded to 32-bit versions, and 64-bit ones to 64-bit ones.
Windows RT vs Windows 8: hardware support
This is the most important difference between Windows RT and Windows 8: Windows RT only runs on ARM-powered devices, while Windows 8 only runs on x86 devices. Windows RT won’t run natively on an Intel- or AMD-powered PC, and Windows 8 won’t run on an ARM-powered device such as the new Surface tablet.
- Windows 8 tablets: everything you need to know
Windows RT vs Windows 8: interface
Both Windows RT and Windows 8 run the new Metro interface, but Windows 8 can also drop down to the traditional Desktop for older apps. Windows RT can’t: while it does have the old Windows Desktop for some of Microsoft’s own apps, the desktop won’t be available to third-party software.
Windows RT vs Windows 8: software and compatibility
Windows RT also restricts what APIs (application programming interfaces) developers can use, especially for web browsers, so for example it seems as if there won’t be a version of Firefox for Windows RT: as Mozilla’s Harvey Anderson puts it, “only Internet Explorer will be able to perform many of the advanced computing functions vital to modern browsers in terms of speed, stability, and security to which users have grown accustomed.”
Windows RT vs Windows 8: features
As you might expect, Windows RT doesn’t get everything you’ll find in Windows 8. There’s no Windows Media Player or Storage Spaces, no Bitlocker encryption (although Windows RT does offer device encryption instead), no Group Policy management or domain support, and Remote Desktop only works in client mode.
The differences aren’t as dramatic as you might expect, however: Windows RT and Windows 8 both get multiple language support, IE10, Xbox Live, Windows Defender, Exchange ActiveSync, Windows’ Play To streaming and virtual private networking.