Hi all, i'm building a 6x1080ti rig for the first time and got some panic with all the sata risers stuff to be honest. I've been reading this post and like 1389349539 more but still can't think clearly what should I do, and that's why I ask for some help here, would appreciate it a lot.

As i said, its 6x 1080 ti and I assume will be underpowering them to more or less between 150 and 180W. Got the corsair ax1600i (http://www.corsair.com/en-eu/ax1600i-digital-atx-power-supply-1600-watt-fully-modular-psu-ww) and also my risers have only 6pin power connections.

- Can i use each PSU PCIe connectors to 1GPU + 1 riser, using a split cable (i believe 8pin to 2x 6pin splitter)? Is that safe/capable of providing the gpu+riser the W they need?
- Should i use 1 PCIe to 1 GPU and the other 2 PCIe for 3 risers each?
- Any other better combination/s?
- Not any of what i said... 

Thank you very much in advance