I've got an update regarding the Gigabyte Vision OC:

I managed to get a decent hashrate with it:

~96 Mh/s @ 224W
PL 61
core +90
mem +1000
Fan 75

core actually fluctuates between 1200 -1400Mhz
GPU temp (according to MSI afterburner) 51c in a closed case and @ 21c ambient temp