First off, take your computer and lay it on its side. If your cooler for some reason isn't making full proper contact, then gravity will give you your answer. If your temps go back down then you just need to remount your heatsink properly. Next, which software are you using to monitor temperatures? I recommend Hardware Monitor. In addition, check what temperatures your BIOS reads. I also recommend replacing thermal paste ASAP, and putting it on properly. I also have a V8 and its a beast. Good luck.
Alright, I got my computer laying on its side and the temperature went back to normal (for about 10 minutes,) and it slowly started climbing again. Gonna change the thermal paste and re-mount the cooler and see how it goes.