Quote from: dogie on May 23, 2014, 02:51:40 PM

Quote from: ffernandex on May 23, 2014, 02:43:46 PM

Hello,

I want to use two 450W PSU (Corsair VS450) as here where I live is cheaper and easier to buy two of these than one of 850W.

This would mean I will use two PCI-E from each PSU to power two hashing boards on the rig, plus I would have to power the control board from one of the PSU. Does anyone know how much power does the control board draw? Should I care that I will have an imbalanced power usage from each PSU?

Thanks in advance,

Each hashing board is electrically separate so no problems using 2 PSUs. The control board will use somewhere between 10 and 30W, not much at all.

Hi dogie,

I run into an unexpected problem. So I got the two Corsair vs450 PSU's, I connected the first PSU to two hashing boards each with a 6 PIN PCI-E. Then the second PSU to the remaining two hashing boards and the controller board with the Molex 4-PIN connector.

At first it seemed to work, but after about 5 min the first PSU shut down. The second PSU kept working, keeping the miner alive and hashing with only two boards. I thought it was an issue with the paper clip hack, so I readjusted the clip and started again. Once more, it seemed to work, until 5 min later or so it shuts down again. This happened repeatedly, over and over, and I did all kinds of "improvements" to the clip to see if it got better.

Then I tried changing the PSU supplying the controller board. So now PSU 1 started powering the controller board instead of PSU 2 as previously. Now guess what happened. PSU 2 shut down after 5 min.

So I think the issue is that somehow these PSU refuse to take loads only in the PCI-E connections and wants to have at least another load in the Molex. What gadget may I connect to the Molex to keep the PSU working?

Thanks in advance