No those temps are normal. I have my Q6600 Oced to 3GHz and my temp range is the same. You will normally see about 20c difference between idle and load, especially when OCed.
And don't worry. The temps yours is at under 100% load is fine. They can go over 70c before any danger is present.
The only way to lower the temp would to try to lower the voltage to the CPU but that may cause it to become unstable. You can try lowering it 1-2 points and retesting it with Prime95. If its stable keep doing it until you find the lowest possible stable voltage.
How did you manage 3.8 GHz on 1.28V... someone got lucky with their chip
But yea, mid 50s are perfectly normal for a CPU under heavy load. Mine hits 58 under full load after about 80 mins when the liquid in my system isn't quite at room temperature, but it's an overclocked quad core. No need to worry about yours at all
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.