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| Home >> Resources | Support >> How to Upgrade Computers >> Improve the cooling of your un-overclocked Thunderbird >> |
V. Solution 4: Increase AirflowImprove the cooling of your un-overclocked Thunderbird by Philip BayerI now had a pretty stable machine running at about 46°C, and I could do a lot with it. But I still wouldn't dare run a high-end CPU cycle-eating 3D renderer, or game. If I put the CPU to full use, the software cooling would have no effect, and my machine would surely freeze. So I continued on reading webpage after webpage, and magazine after magazine until one day at work, a co-worker pointed out to me a particular Gateway 2000 server which had a very interesting configuration. Looking at the Server's innards, I found that the case was very roomy and definitely had adequate airflow. The hard-drives were rotated 90?horizontally allowing easy access to the cables AND keeping the cables out of the way of the chassis air stream. There was a huge 92mm fan in the front of the case, blowing directly over the hard drive bays, and there was a MONUMENTAL 120mm rear exhaust fan just below the power-supply. The power-supply had the air intake on the bottom, so that hot air is drawn straight off of the processor and out the rear of the case. The Server is a Gateway 6400 Server with Dual P-III 1 GHz processors, and the entire chassis was obviously designed from the ground up to be as cool AND quiet as possible, as with the case closed, you would never imagine that there are 212mm of total fan diameter under the hood. I looked up the model numbers of the fans on the web. The Delta fans used on the Gateway server (and now on my PC) have excellent throughput with low RPMs and thus low noise. Their large area and good design allow them to move a lot of air without spinning too fast, and they come with an extra wire for use with an AMD Motherboard's Fan RPM sensor. After reading the specs of the Delta fans, I concluded that not all fans are created equal (See: VIII. Heatsink Install Tips, and Fan Fan Throughput ). I replaced my 2-sleeve-bearing low-RPM front intake fan, with a slightly higher-RPM, ball-bearing fan. Although the new fan is the same size as the old one, it comes with a heat-sensing diode attached to the end of two long wires, and the fan actually speeds up when it senses high-temperatures, and slows down when the CPU is relatively cool. I taped the diode right to the side of the CPU heatsink with the head resting just short of the CPU. This way the fan will speed up and slow down almost in conjunction with the CPU temperature and not with the ambient chassis temperature. The running temperature of my CPU dropped another 2?to 44°C.  NEXT: | VI. Solution 5: Case mods for better cooling |
VII. Conclusion and updates |
VIII. Heatsink Install Tips, and Fan Fan Throughput |  BACK: | Preface and Notes | I. Introduction and Specs| III. Solution 2: Ensure proper airflow | IV. Solution 3: Software cooling | | OTHERS: | Go to Top | Directron Home | Other System Manuals | |
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