gahz1

just make sure your materials compensate for pressure. wouldn't want it to blow up when it boils :O

DuckieHo

The pressures are too low for anything to explode. The heatpipe will hit a critical point where the working fluid is no longer condensing again. After that point, a crack may appear in the pipe or seal but it won't blow up.

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Eclipse-1313

ok sorry for the really late reply, Exams coming up at school and i had been slacking off soi had a rush of work, anyways...

I have decided on making this heatsink for my Gigabyte 8600 GT 256Mb ddr3.

It comes with the silent pipe 2 cooler which works quite well {When i have a 120 mm fan directed at it lol} but i have hit the Oc limt so i was going to proform a voltage mod and try to go higher.

The Motherboard is going to be laying on it's side so the 4 heat pipe will be vertical with no bends. I was going to then make aluminium fins that span all 4 heat pipes with two 80mm fans on it {One each side, one blowing air in, the other out to make a wind tunnel effect}

do you all think this sounds ok?

any suggestions that maybe better then what i have though of?

Thanks for all the help

Eclipse-1313

I was going to use about 6 mm copper pipe with a one way presure relese valve on the top to create my vaccuum after the initial heating. I was goint to use acetone since it's working range is 0 to 120 and i was hoping to get peak condensation at ~40c.

i was trying to think of a testing method for thi.

Since the way i am achiving a low pressure area inside the tube is very,very crude i will not be able to specify what pressure but instead have to increase or decrese the initial heating until i find the optimuim tempreture.

Any suggestions of another method?

Also any links to what you consider to be "SAFE" vmods for 8series cards would be appreicated.