What's wrong with using 20 on one controller? Isn't that what Canaan says you can do?

Thanks for the links.

M

okay 4 usb cables out mean 4 auc3's in theory 5 miners per auc3 so 5 x 4 = 20

**a few guys with bigger setups do 4 auc3's 3 miners per auc3 so 3 x 4 = 12**in pm talks with people running 100 to 200 miners they have both told me 12 per unit hash rate is a bit higher per miner and up time is better.

I suppose that the controller runs to the lowest miner on each chain so you can have more ability to sort the lower miners on 2 rasp pi's of 10-12 miners then 1 rasp pi of 20 miners.

1 rasp pi gives you only 4 chains of 5 adding to 20

2 rasp pi gives you 8 chains of 2 and 3 adding to 20

down time issues 1 rasp pi dies 20 units go dead.

1 of 2 rasp pi die you can link to the other rasp pi.

I suppose if you go to a 1000 miners the rasp pi cost is more.

but at the 100-200 level

maybe 10 rasp pi vs 20 rasp pi is 700 vs 1400 maybe even 600 vs 1200 if you build your own rasp pi

If I had 200 avalon 741 set up I would have maybe 20 rasp pi not 10. Since 200 avalon 741 = 160,000 I would spend the extra 600 or 700 for more controllers.

I have no where near that. so it is easy for me to use extra controllers.

It also allow me to mine BCC/BCH on one controller and BTC on the other one.