It's quite possible that no reviews for it exist, I have yet to see one. Some GPUs are never reviewed, and some take a while to show up, it all depends on when and to who Zotac sent a card to be reviewed, if they did at all.
the thing is i am considering either msi gtx670 power edition that is nearly equal to stock 680 or zotac 670 4gb cause i like skyrim and i want to do some futureproofing. but power edition would be more efficient as it has higher clock
Well, if you know you're going to do tripl monitor set-up.There isn't any way to go other than GTX 670 4 GB (since the test shows that the 2GB version lags far behind in the games they tested...)
The only difference between the GTX 670 2GB and 4GB is the vram... you can still overclock them to pretty similar clocks... (high 1100s to low 1200s)
But ya. CFX is definitely really damn buggy compared to SLI...