how much power can a x16 pcie riser cable carry? i've read that x16 slots provide up to 75w, is this true and are there any riser cables that are known to carry all 75w that the x16 slot provides without needing additional power like a molex plug attatched to the cable to supplement? i have a sff optiplex 7020 with a 1050ti that has no external power, and i need a riser cable to make it all fit so that i can put the side panel back on. the psu that is in it has no molex plugs or anything other than whats going to the motherboard, and from what i've read most pcie risers and cables dont transfer the full 75w of the x16 slot without some kind of external molex power from the psu.
on a side note if i do end up needing a new psu to make this work, i'm considering going ahead and upgrading to a 1650 super. that card only has one external 6pin plug which i looked up online is only capable of carrying 75w. if what im reading is right, and a pcie riser can't carry a full 75w without molex, would a cable without molex at least be able to power the 1650 super under full load at its listed 100w tdp when combined with the cards 6pin external?
if anybody has any experience with any of this i would super appreciate the help, could save me some money and headaches. thanks in advance!