Hi everyone, I am having a problem with my system again. Since I purchased the RAMs on November 2013, I overclocked it to 1866 MHz 9-10-9-24 @ 1.6625V and it was stable. However, recently I have been having some instability issues which I was sure related to the memory. I cleaned the system entirely but it didn't improve. But increasing the memory voltage to 1.675V did the job. Now there's an important note: My RAMs are good with other processors(FX 8350) even at 2000 MHz 10-11-10-30 and is stable at 1.65V even at that high frequency. But because of IMC limitation in my Phenom II CPU, it won't go over 1896 MHz and for some reason, the RAMs need more voltage to become stable. My question is why do I require the extra voltage to make it stable now? Is it because of the RAMs or the CPU IMC is failing? Any help would be appreciated. The CPU still has a month of warranty left. The motherboard is fine. I confirmed RAM voltages with a friend of mine having the same board and we have got same values.