1.55v on a quad is way too much for 24/7 use.
Look at it like this - Most G0 quads will do 3.6Ghz with around 1.4v and then anything on top of that often requires a lot more voltage, and with the voltage, you get much higher temps.
The difference in real life performance between at quad at 3.6Ghz and a quad at 3.7/3.8Ghz isn't very much, so for the sake of the extra heat and voltage, you would be better off sticking with sensible leverls of voltage for 24/7 useage
The temps are probably about right for that voltage. Room/case temps will play a large part too.