if you use ribbons they need to have the additional power attached to them so you dont burn out the pci slot on the motherboard.
they usb risers are better in the fact they can be sat somewhere else other than directly above the mobo
plus the circuitry is better than just the ribbons themselves less chance or burning stuff out
not true, i use ribbons all the time with my 1070 and they work perfectly fine, usb risers or powered risers are useless with the h81 pro btc, that come with additional power, they have a reason onyl on MB withotu 2 molex
Ribbon are okay with some cards and some rigs.
But a well made riser is better.
If you had an Aorus 1080 ti and ran it at 80% it would bury your ribbon. but it is using 240 watts
a 1070 at 80% is using 120 watts.
To op if you have lower powered cards a well made ribbon might work for you. I never use ribbons and seldom use risers.
I build rigs like this:
3x 1080 ti

2x 1080 ti plus 1 x 1070
