Quote from: tolip_wen on June 25, 2014, 03:27:38 PM

Quote from: aasl on June 25, 2014, 01:53:26 PM

I am not familiar with multiple PSU's. How to set up single rail or multi rails? what is the best option to make neptune work? suppose I have three 850W PSU.

Each PSU is single OR multi rail.
Each rail needs to be capable 300 Watt minimum for each ASIC plugged into that rail.
(based on KnC statements)
For multi rail supplies you gotta dig into the literature for specifics on each rail.

For your 3 x 850 question, I'll assume single rail PSUs.
Use 2 ASIC per PSU and power controller cube from 3rd PSU with one ASIC.
If the 'suits' are to be believed this will load the 850's to around 600 Watts.

If your three 850W PSUs are single rail and were in one box it would be a 'triple rail 2550W with 850W rails'.

Hope this helps.
Please if possible understand what is going on before applying power.
Internet advice can be faulty even with good intentions!!!

YMMV

very helpful, thank you. One additional question if you please.

Is it a bad thing to load say, 3 out of 4 rails to near full and leave the 4th one doing nothing?

also

Quote from: Phoenix1969 on June 25, 2014, 04:33:40 PM

Peeps....
I thought every miner knew....

You should only use SINGLE RAIL PSU'S
anything else you are wasting $ and taking huge risks imho

Multi-rail PSU's are SHIT,
I burnt out a couple last Generation before going to all Corsair single-rail
Even when the multi's "worked", they could not keep up with the rest
Even 5 year old-crappy used HP desktop PSU's were better. Just sayin'

I'm embarrased to say I didn't think it would be a problem, all my previous supplies have been single rail, so I've never had the experience so I bought a couple Antec 1300W 4 X 25 AMP PSU's cuz I thought they'd be fine and they were on a massive sale???

I haven't opened them yet, should I try to exchange?