if you tell me how to check what kind of memory I have,
then I can take a look, and I will tell you then.
because I have no idea how to check that.

and about that voltage, it depend on card, for some is 1,1V enough, another need at least 1,163V

it is total mismatch in my rigs, some of riser are powered, some are not, some are long, some, short, some usb,
some mobos are with molex connectors, some without,
but you know how is it like, if something is working, then dont touch, or even breath