I upgraded my Lenovo W520 from Windows 8.0 to Windows 8.1 2 weeks ago:
- Windows 7 and 8.0 crashed now and then.. 8.1 seems stable so far
- I can now use all 8 cores for a VM!
- Nice to have machines that can use EFI and boot from network, although not something I’m likely to use
- The console now emulates RDP more closely, with full screen across two desktops possible! This is a great feature for demos when I will not be certain to have a router available
- No RemoteFX .. why not? My machine is powerful enough to play Half Life 2 under RemoteFX
- Outlook 2013
- Font makes it easier to see more on the screen at once
- This is a big one. Windows 8.0 let me type and find things in Apps, Settings or Files. I found it quite intuitive. Windows 8.1 not searches the Internet by default.. why?
So yes, basically worth it.
- On a Lenovo W520, disable the NVidia graphics chip in the BIOS when installing Windows 8.1, otherwise it will crash without explanation
- It is very easy to install an additional mSATA drive on your Lenovo W520. (Although you need to remove the keyboard). Note that this interface has a 300 speed, even if you buy a 600 drive. (The internal 2 hard disk bays to however support 600)