Does anyone know how to downclock the chips on the new boards? I don't have enough cooling apparently and my heat sinks won't arrive for another week. The chips just keep cycling, the high side of 575GH for my whole rig, and then down to 100GH, slowly, as the Hboards turn the chips off one by one.
The DHCP script did not work for my network, I had to have a friend go in the Pi and help me set up a static IP manually.
Aside from that, the October rig is great. For anyone still waiting on theirs, make sure you have good cooling ready to go. I am looking at some 100cfm 120mm fans right now, but I might get ones a little stronger.
First, get alot of airflow through the cards. A cheap large box fan would probably suffice. If that doesn't solve the problem, you can turn off a few chips on each H-board to reduce the heat and current draw to prevent the regulator from shutting off. Let the autotuner do its thing with the rest of the chips. Do that by creatingopt/bitfury/best.cnf with something like this:
1 AIfDSo 54
2 AIfDSo 54
3 aifdso 0
4 AIfDSo 54
5 AIfDSo 54
6 AIfDSo 54
7 aifdso 0
8 AIfDSo 54
9 AIfDSo 54
10 AIfDSo 54
11 aifdso 0
12 AIfDSo 54
13 AIfDSo 54
14 AIfDSo 54
15 aifdso 0
16 AIfDSo 54
17 AIfDSo 54
...
256 AIfDSo 54
Restart chainminer after changing best.cnf:
sudoopt/bitfury/start-miner.sh
I would advise against that - youll be trowing away too much hashpower. You have a few options i can think of:
1) cool better - heatsinks and fans will make the unit totally stable.
2) reduce chips to 52 or 53 tuning. youll lose maybe 10% speed but should gain stability as a result.
3) replace resistor R02F. A slightly higher resistance will reduce the hashrate to a stable level.
personally, i advise getting some better heatsinks and/or airflow. it is worth it for the extra 0.2-0.5BTC you will earn in the long run
