I have my Phenom II x4 955 BE clocked at 4Ghz at 1.4125 volts in the bios. I have the CPU paired with a Hyper 212 plus cooler and have also changed the fan to Cooler Master Xtra flow 120mm Red LED fans in Push/Pull setup.
at idle, the temps are 36 to 38 degrees celcius and at load, they never cross 52 degrees.
I ran Intel Burn test for 10 minutes and LinX for 20 minutes as well. No errors were found. What do you think. I tried to reduce the voltage but I get blue screen while running Intel Burn test. so had to settle for a higher voltage. Is the voltage too much?
I tried running 3.8Ghz at 1.35 volts and it was stable.
You may settle with that 3.8ghz OC . Personally i don't recommend running today's CPUs at 1.4V and above on a long term basis. If you upgrades your CPU with in a year or two then no problem you can stay with that 4.0ghz OC, otherwise stay at 1.3xx V range.