So recently I got to a point where I made a matter fabricator. However when I tried to figure out the amount of EU required to make 1 UU matter I got 2 different answers: 16 666 666 from the feed the beast wikia (http://feed-the-beast.wikia.com/wiki/Matter_Fabricator) which, so far, I found very reliable, but NEI in-game says 166 666 (though I might be misinterpreting that). I think that it is 166 666 EU, but I'm not 100% sure and don't want to drain all my energy for nothing.