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Home >> Resources | Support >> How to Upgrade Computers >> Improve the cooling of your un-overclocked Thunderbird >> 

VI. Solution 5: Case mods for better cooling

Improve the cooling of your un-overclocked Thunderbird by Philip Bayer

By this time I was just short of an expert on CPU cooling. I think I have read every major article and white paper on chassis airflow, fan and heatsink design, thermo-dynamics, and enough material to cover 1/3 of a Chemistry course on the heat-distribution and dissipation of various materials. However, after all of that, at 44°C, my CPU still was not cool enough for me. I decided to spend the money on a new case. For two weeks, I read every review that I could find on every chassis which some basic requirements: 88mm (or greater) rear exhaust fan, 3x5.25" and 4x3.5" drive bays, and a 300 Watt power supply with bottom air intake. I narrowed it down to just a handful, and finally decided on the Palo Alto PA-810 Server Chassis (see the component list). I like the case because of the excellent cooling design with a 120mm rear exhaust fan, 92mm front intake fan and optional drive cage which is rotated 90?horizontally for easy access and... Sound familiar? That's because the PA-810 Server Chassis is the same chassis that Gateway uses in their 6400 Server series. That's right Palo Alto fitted them with a custom bezel and shipped 'em out as is.

I have ordered my new chassis, but I am still waiting for it to get here. Therefore, I have no benchmarks on it's cooling effect on my system. However, I am not going to wait forever to start using my system for hard-core tasks. I decided that since I have a new case on the way, I can experiment with the old one a bit to see if I can get it to run a bit cooler. I decided that there were two things that I wanted to change.

First, I wanted to add a second case fan. Since there was not enough room in the rear of the case, I cut a hole in the side panel just above the CPU, and mounted my old sleeve-bearing fan on the outside of the door facing in. The result was an astounding 5°C drop in temperature. That fan is not very loud, so even on the outside of the case, the noise is not very noticeable. BTW, I mounted the fan on the outside of the case because I am without the proper tools. I recommend you mount the fan on the inside of the case and put some sort of fan guard to prevent accidental damage to the fan or motherboard.

I also wanted to modify the front intake fan a bit. There was a spacer of about 1?#34; between the fan and the front of the case. This meant that the fan was not only drawing cool air in from the front of the case, but it was also recirculating warm air from inside the chassis. Removing this useless spacer with a hammer, tinsnips, and screwdriver led to a small but noticeable 1°C drop in CPU temperature and about a 2°C drop in chassis temperature.

NEXT: | 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 | V. Solution 4: Increase Airflow |
| OTHERS: | Go to Top | Directron Home | Other System Manuals |



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