I'm a bit late on this conversation, but I wanted to give some input which may be helpful for others trying to use their Apple Thunderbolt Displays with a Windows PC. First i wanna start by saying that Originally I got a great deal on a Mac mini last summer. I also found a Thunderbolt display in very good condition with box, manual and warranty at a Killer price. I run OS X for everyday computing Web browsing, email, itunes, school work etc. I even installed Windows 7 tu run a few games. As i started to enjoy PC gaming a lot more, I descided tu build a gaming windows PC. And I wanted to use the fabulour Thunderbolt Display. So here is a list of the main components:
i7 3770k, Gigabyte GA Z77X UP4 TH, (Thunderbolt Motherboard), GTX 680 4GB, etc.....
While the Thiunderbolt Display Works with no problems using dedicated graphics, I could not run my favorite games using Intel HD4000. So the tricky part is setting up the BIOS and installing the necessary software to run "integrated graphics" alongside "dedicated graphics."
So,I Installed the Intel Integrated Graphic Drivers, Then install all the GTX 680 Drivers.
Then on the BIOS settings under peripherals, have Integrated graphics ENABLED, ALSO have "init primary graphics" to PEG. which is PCI express Graphics. SAVE SETTINGS AND EXIT.
The last thing to do is installing VirtuMVP. once installed enable both Integrated and dedicated graphics, and add your programs and games to the Applications list on VirtuMVP.
I have been gaming just fine using this display.
I also uploaded a video on youtube. showing how I got it to work.
It's a straightforward process if youre using Integrated graphics, but could get tricky if you ave dedicated graphics, mainly because no cards as of March 2013 have thunderbolt outputs.