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BIOSTAR TA790GX 128m MOSFET Cooling Guide/Solution

post #1 of 4
Thread Starter 
I put this little guide together for anyone who is considering throwing in a new quadcore on the TA790GX 128m. These boards are good overclockers and still have some life left in them with a bios update!

First things first: Getting a 955/965 processor to work on the TA790GX 128m requires a modded bios. Tech-boy has a great thread about the flashing process and other important steps here:

http://www.overclock.net/amd-cpus/73...955-965-a.html

I was concerned that the MOSFETs would begin over heating while overclocking the new 955BE. After some looking around, I found out that there is not a commercially available MOSFET cooler for the TA790GX 128m.

I did some additional research and found that the Enzotech MST-81 C1100 MOSFET cooler is the correct length, but the mounting holes won't line up.

http://www.newegg.com/Product/Produc...82E16835708015

So, I bought some Arctic Silver Alumina AATA-5G Thermal Adhesive to attach the copper MOSFET cooler to the motherboard. I went with the Arctic Alumina because it is not electrically conductive and will provide a permanent bond.

http://www.newegg.com/Product/Produc...82E16835100013

I found the Arctic Alumina easy to work with! I cleaned the MOSFETS and heatsink with 99% Alcohol. I did allow the setup to cure overnight before installing the motherboard and firing things up.

This mod is working like a CHARM! The large copper heatsink really works well

I have the 955 overclocked to 3.8 on 1.378volts on this board and the stability is awesome.

Good luck and enjoy guys!

Cereal
Edited by CerealKillah - 1/6/11 at 12:16pm
    
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post #2 of 4
The new egg links seem dead , did you take any photo´s ?
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post #3 of 4
Thread Starter 
Fixed the NewEgg links, thanks for that.

It is my dad's PC...and I forgot to take pics. Maybe I can run to his house this weekend and try to snap a few.
    
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post #4 of 4
I did something like this to my old TA790GX, those MOSFET's do get pretty toasty when you overclock. Here's a link to what I did to mine.
    
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