As you probably notice, this is my first post. I've been lurking here for a while and find this site a great resource. My overclocking experience has finally led me to post a question here. Currently, I am running an Athlon x2 4400+ and have achieved a stable overclock at up to 2.9GHz on stock cooling. However, I have a slight dilemma. In order to reach 2.9GHz, I must increase vcore to 1.520v in the BIOS, which is reported somewhat higher in CPUZ (I'm not currently at this speed and cannot find the exact voltage). At 2.88GHz, I can remain stable at 1.450v in BIOS, reported 1.488v in CPUZ. In order to reach 2.850GHz, I need only increase vcore to 1.4 volts. It appears that I have very nearly hit the limit of my processor, no matter how much voltage is applied.
My processor, being a Brisbane, has a faulty thermal sensor and is not reported correctly by any programs but Speedfan. Strangely, Speedfan reports what appears to be an accurate temperature on Temp2. I have determined that this temperature does change with adjustments that would alter processor heat output such as stalling the heatsink fan or a voltage increase, giving me reason to believe is it somewhat accurate. At a full 2.9GHz, the processor reaches around 63c. This does not seem to be a very desirable temperature. Consequently, I see two options for my overclock / cooling problem. 1. I could remain at a safe temperature with a slightly lower clock speed and stock cooling or 2. I could purchase an aftermarket cooler and attempt to push the processor further with up to the 1.55v that my motherboard can supply. Given the severely diminishing returns that I am now experiencing, I am inclined to choose the first option, however I would appreciate the opinions of more experienced overclockers.