- Joined
- Mar 17, 2009
- Messages
- 6,246
Having read so many posts regarding chipset temps and the lack of airflow to the surrounding CPU areas when installing aftermarket upright coolers, I decided to do a little experiment.
The H55 rig is being used 24/7 for folding, which loads the CPU 100% on all threads. I ran the machine at stock 133 and that resulted in my core temps running around the 65C mark with the CPU temp target set at 55C . The CPU fan at that setting was spinning at about 1800rpm. One temp however seemed a bit too much to my liking, I figured out the sensor is somewhere in the "DrMOS" area. that was running at about 72C.
I decided to do a temporary installation of a silent 120mm low RPM fan. This I placed on the intake side of the CPU cooler, slightly angled towards the board. Its resting on the GPU card and the CPU power cable actually presses it down slightly, keeping it in position. This can be seen clearly in the attached photo.
I will still figure out a more permanent solution, short of buying a spot fan. I prefer this fan though as it is not really audible.
The next screenshot clearly shows the results.
I have increased the BCLk to 140, the CPU fan speed has dropped to ~1200RPM and the "DrMOS" temp which is Temp2 in the speedfan dialog is down to ~60C. Full CPU loading.
The result is quite a bit of extra headroom to increase the BCLK or to just continue this way and benefit from the lower temps.
I must admit that the i7-870 was a good choice in terms of performance.
The H55 rig is being used 24/7 for folding, which loads the CPU 100% on all threads. I ran the machine at stock 133 and that resulted in my core temps running around the 65C mark with the CPU temp target set at 55C . The CPU fan at that setting was spinning at about 1800rpm. One temp however seemed a bit too much to my liking, I figured out the sensor is somewhere in the "DrMOS" area. that was running at about 72C.
I decided to do a temporary installation of a silent 120mm low RPM fan. This I placed on the intake side of the CPU cooler, slightly angled towards the board. Its resting on the GPU card and the CPU power cable actually presses it down slightly, keeping it in position. This can be seen clearly in the attached photo.
I will still figure out a more permanent solution, short of buying a spot fan. I prefer this fan though as it is not really audible.
The next screenshot clearly shows the results.
I have increased the BCLk to 140, the CPU fan speed has dropped to ~1200RPM and the "DrMOS" temp which is Temp2 in the speedfan dialog is down to ~60C. Full CPU loading.
The result is quite a bit of extra headroom to increase the BCLK or to just continue this way and benefit from the lower temps.
I must admit that the i7-870 was a good choice in terms of performance.