- x6 GTX 1070
- 1600 Watt PSU with x6 (6+2 and 6+2), x5 (stuff with bunch of molex and SATA adapters);
- x6 risers with 6pin
- So far tried to put one of x6 6+2 to power each GPU, use of of SATA adapter to power the 1 riser
Problem:
- It looks like SATA adapters would sometimes try to melt, because when I power on the PSU - it would shut down immediately (I even smelled burned plastic once).
Possible solution:
- Can I just use both 6+2 adapter of each cable, and just put 8pin to power GPU, while use the other 6pin with 6pin extender to power the riser? Will the 6+2, 6+2 cable handle this?

See this image for what I mean:

P.S. Just to be crystal clear: 1 SATA --> 1 riser seems to be fine. But once I try to use 2 SATA on the same cable to power 2 risers (1 SATA to each riser) - the rig power would sometimes not start, and auto halt. I have only 5 SATA/Molex cables vs 6 (6+2, 6+2) cables - so I am 1 cable short for powering 6th riser.