asus calls vtt, the cpu uncore voltage, qpi/dram voltage...
thats causing some confusion...

are you sure your KIT sets 1.35v vtt?
maybe its the board setting the vtt?

i know the asus board sets higher vtt automatically as soon as you set a high mem speed...

oh and i checked, weve been running vtt 1.75v on cold as well for quite some time, and no problems so far...