cxb3590 drive current opinions

well after seeing Tex's 8 cob setup I think I will try a 10. what do you guys think will be a good setup pattern? I was thinking the 5 dice pattern two times on a angle grid.

Hey can someone do the math and let me know what I can expect for ppfd on a 10 cxb3590 driven at 1.4ma or 1.4 amp a cob? Its going to take me some time to learn the math involved as I continue in the led building hobby.

So I see a chart for the CXB 3590 CD driven at 1.4 ma and the efficiency is 56%. not bad at all and I will upgrade to .700 ma later on to get the 64% out of them. What will the par wattage be out of a setup like that?