Little Overclocking and you'll hit the Max Temperature allowed for Phenom II X4 940 BE which is 62°C. I hit that temperature when I overclocked to 3.6 GHz with 1.4 V. Cool'n'Quiet helps in decreasing the CPU temperature by 5-6°C. My current idle temperature is 39°C-45°C with Cool'n'Quiet enabled and full load temperature goes upto 55°C (with playing FarCry2). Here is the analysis (using Biostar TA790GX 128MB):
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhgWRaIFILAYyiInzkQZIn3NTP1mDDb3Zp1zV69OwB-Qa154U7LjWTzHy6sZ4KtkJi5pw5t6sgd7J0RcSYMxoUjqEJs-HBpIxSFmNouYT01t8aCipoOnrkjfydYFkJ-8hyphenhyphenR6Bb7DF1NxmM/s400/Untitled-1.jpg)
Figure 1 (Y-axis: Temperature in °C, X-axis: Time in Mins)
Figure 1 shows the temperature for 3 different cases:
- No Overclocking + Cool'N'Quiet enabled (Blue Line)
- OCed to 3.4GHz + Cool'N'Quiet disabled + stock voltage (Red Line)
- No Overclocking + Cool'N'Quiet disabled (Green Line)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDvOqn9yv8eC97N9HdzwggGZY1bdMlyd9bN1CIGe6hoWu4-dJiB-7M9m24wfdMhlg4RrA07izglzPd_y1MhKLrvBoBcs15MwJmDz45-iIfFLVBKwDpWZODZhcCM89_BQwxRt8iNUMJ8lw/s400/Untitled-2.jpg)
Figure 2
When OCed the CPU usage doesn't go more than 60%, but in case of Cool N Quiet enabled the CPU usage is around 90% most of the time.
Opening the case (CoolerMaster CM 690) from both the sides decreases the CPU temperature by 5°C and idle temperature hovers around 34°C-40°C (Figure 3). Will put more fans to improve the air flow, also will apply a new thermal paste some time soon. I am expecting an idle temperature around 30°C.
Here are a few screen shots of CPUID HWMonitor, CoreTemp64, CPU-Z:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhR7LpIEwvhLHluam_dZvblLNDgdWVhT7FNIU52g4SOLfdiRkGz1Miu3Ip9VNLTynUbSzN1_u2APkYtwl1_nMFLa-o3YQTHmvqtqf8nXGcXyrjo5S6h3L9tfgZG5R6SsVDUzQ51tlmV2Ek/s400/mix2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijLrKbfpSQq9uJUMSwi1S2B4_c37kSAsrqX7ZJ1ElrZlfoZLlpemOVwceNZaMyeUTq17Ju1pF0fZH32Nf7Uy8K9dg0jofl8ttedQAdlEY7jDBDqh8glvsJ140ZXVZSbyILgUUjnn4rsj4/s400/mix1.jpg)
Opening the case (CoolerMaster CM 690) from both the sides decreases the CPU temperature by 5°C and idle temperature hovers around 34°C-40°C (Figure 3). Will put more fans to improve the air flow, also will apply a new thermal paste some time soon. I am expecting an idle temperature around 30°C.
Here are a few screen shots of CPUID HWMonitor, CoreTemp64, CPU-Z:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhR7LpIEwvhLHluam_dZvblLNDgdWVhT7FNIU52g4SOLfdiRkGz1Miu3Ip9VNLTynUbSzN1_u2APkYtwl1_nMFLa-o3YQTHmvqtqf8nXGcXyrjo5S6h3L9tfgZG5R6SsVDUzQ51tlmV2Ek/s400/mix2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijLrKbfpSQq9uJUMSwi1S2B4_c37kSAsrqX7ZJ1ElrZlfoZLlpemOVwceNZaMyeUTq17Ju1pF0fZH32Nf7Uy8K9dg0jofl8ttedQAdlEY7jDBDqh8glvsJ140ZXVZSbyILgUUjnn4rsj4/s400/mix1.jpg)