Quote from: bcollan on September 07, 2014, 06:28:18 PM

Quote from: cesarm on September 07, 2014, 06:05:19 PM

Quote from: bcollan on September 07, 2014, 05:08:38 PM

My 3 tubes are hashing at 196 to 210 GH/S per board for 2.45TH/S total at stock clock, with 1 stock fan.

Am I just lucky, or is it something I've done differently?

Well, I'm not sure, so here are my observations.

1. I think assembly technique is important. I applied the thermal pads to the heat sinks first, then made sure there were no air bubbles under the pads. Then I used an impact driver to tighten the screws in a random pattern so as to equalize board contact with the heat sink. I have the fan blowing "in", and faced the handles "out" as some others recommended.

2. I used high quality power supplies providing at least 250watts per blade.

3. I placed the tubes on a wire rack shelf providing airflow to all four sides.

4. I'm using Slush's pool with bfgminer 4.7 as a proxy. I know it should work fine without the proxy, but I hesitate to mess with success. Wink

You are using one or two pcie power connector per board ?

Only one for now. It's near impossible to find power supplies with 8 independent pcies, e.g. separate cables all the way back to the ps.

It should be better even just using a single feed with two connectors. I believe it should reduce the stress on the connectors, long term.