You are using scrypt right? (LTC) in scrypt there is usually 10 to 15 C higher in VRM than core temps, so you must get this value down at least 10 degrees, increase fan speed, relocate board to a cooler area or lower engine Mhz. (860 maybe)

I think that max temp for vrm are 100C (somebody correct me if I am wrong), but even if you are not, at these temps you are cooking the ram chips too!, which usually share the heatsink with the VRMs.