my neptune crash down when i put 400 mhz and more\
whst to do
i had 2 corsair 1200 i
but i think is awful psu fina;
Can u run 2 cubes on one 1200i at 475 MHz ?
If this works just get a new smaller PSU for 1 cube.
Can u run 3 cubes on one 1200i IF THE OTHER ONE IS OFF?
You might be starving your AC circuit.
If you have a HEAVY DUTY 12/3 extension cord try one PSU on a different outlet.
copper house wire can corrode if the wall outlet screws are not tightened properly
(thats a hard one to troubleshoot)
You might try a housefan on the PSUs?
With Corsair it has been suggested to use only the DOUBLE PCIe cables
but
USE ONLY THE FIRST(closest to PSU) OF the 2 PCIe CONNECTORS
16AWG to first connector and 18AWG to second
I know as fact my Corsair single PCIe cables are only 18AWG
(lower is better for AWG)
I have AX760's but the replacement cables are same part numbers
I ran 2 cubes on 1 760 briefly 10-15 minutes hashing @ 475 MHz
Try possible solutions that do not involve spending lots of money FIRST.
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
Else throw money at bigger PSU's
Thx again u27 for that Corsair wire gauge detail!
YMMV
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EDIT
Run them 2 at a time and identify WATT for each cube
Try the 3 lowest watt cubes on one PSU
Try same 3 lowest watt on other PSU
Subdivide and conquor!
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