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Unread 03-31-2005, 03:51 PM   #1
starbuck3733t
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Join Date: Nov 2002
Location: State College, PA
Posts: 338
Default How about this for a backside VRM Block?

I want (or not...) to make a VRM block for the backside of my Abit IC7. I saw a guy on Overclockers.com do it to great result. I figured this can be pretty simple, and I mapped out the location of my fets on a piece of tape stuck to the backside of the motherboard, then stuck that tape to paper. The copper pipe is 1/2" ID (yeah, ID, its repair pipe) and the bar stock bits are 1/8" thick. You'll notice notches and holes in places on the bar stock parts, these are to accomodate the inductor coil leads coming out the back of the board.

As far as attaching it goes, I plan (if I do it) to use thermal tape since the OC.com guy had good luck with that.

The fittings on this will be 6mm ID pushfits, and this will be part of a 5-part (5x6mmID) loop. I plan on attaching the fittings at a 90* angle to the pipe, both on the same side, forming a "U" shape out of the pipe and the fittings. I'll cap the ends of the pipe with some copper caps and solder the whole thing shut (easy) and then solder the whole thing together.

Will this work ok? do I need to put some small copper pins through the pipe to introduce additional turbulance, or will the fact of so much copper between the board (not to mention the board itself) make this not too terribly worth it?

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Goliath: 3.4E@3.91/Abit IC7, Maze4 (temporarily) + custom splitter to crazy 4-way watercooling parallel loop: X800XT @ 520/1280 + AC Twinplex, AC Twinplex Northbridge, Silenstar Dual HDD Cooler, Eheim1250, '85 econoline van HC + 2x120, 1x120 exhaust - polished aluminum frame panaflo L1As, 2x18GB 10K RPM U160 SCSI, 4GB PC4000.

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