6 pin modular peripheral port to 6 pin pci-e

Hytham_1

Prominent
Jul 15, 2017
8
0
520
Hi , i have PSU with ports below , all pcie ports is consumed "1 1080 ti with two 8-pin connection , 1 GTX 1060 with 1 8-pin connection" , PSU have another 1 non-modular 8-pin cable .
http://www.pureoverclock.com/wp-content/uploads/images/review/power_supplies/raidmax_rx1200ae/raidmax_rx1200ae_10.jpg
my question is , i need to add another rx580 VGa with 1 8-pin connection , can i use the cable below and connect it to "peripheral-sata" port in the PSU pic "it's 6 pin slot with 5 pins" , and use two 6 pin connections to get one 8-pin connection .
https://images-na.ssl-images-amazon.com/images/I/718fBpv90zL._SL1500_.jpg
 

Hytham_1

Prominent
Jul 15, 2017
8
0
520


can you please elaborate ..
The problem is i want to avoid using "dual molex" to 6 pin connections as some discussions on the forum advised against
it .
On the other hand each pci-e cable in PSU "3 cables" have dual 8 pin connections , but vendor recommendation is to use only one connection of them if VGA consume more that 225 W .
Do you think there's any workaround ?