I've made lots of search about adding an external graphic card to my I-mac i7 (with thunderbolt). I's very hard to find out between all those differents advices.
Is it now possible in june 2013?
I use sony vegas in bootcamp and always have message of satured memory and I have to reboot often in order to make a render in HD.
3,4 GHz Intel Core i7
16 Go 1333 MHz DDR3
AMD Radeon HD 6970M 1024 MB
Mac OS X Lion 10.7.5 (11G63)
I use Vegas with Windows 7 64 bits
And my bootcamp partition for windows is very large (80%)