Here is a review (sorry, I am reading the German one).
http://www.tomshardware.de/geforce-g...te-240979.html
Oh, Trvdi was kind enough to find an English presentation of the card and I admit, his comments about adaptive Vsync technology seem to be good news:
http://www.youtube.com/watch?feature...&v=YCuejLSnvjU
http://www.guru3d.com/article/geforce-gtx-680-review/
As I had posted last month, this is supposed to be the intermediate card (the real high performance core will appear in August). For this reason it has only 2Gb

Despite that, the performance is a big improvement compared to the GTX580
~S~