How to cool the mosfets?

th3n3w5up3rh3r0 · Aug 22, 2003

How can I attach a chopped up heatsink to my mosfets? I realized they were getting pretty hot. Is super glue fine to use? One last question: Is there something I should cool that I am forgetting? I have the NB, and CPU cooled, the SB will be cooled once I cut the heatsink and then the mosfets will be cooled soon hopefully. Thanks for your help.

vonkaar · Aug 22, 2003

Thermal epoxy...
http://www.cooltechnica.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ASEPX&Category_Code=AS

Kino · Aug 22, 2003

try some epoxy, or AS all over the center of the hs, and lil dabs of superglue on the edges

Sterculus · Aug 22, 2003

Arctic Silver thermal epoxy will work the best, then you can also buy thermal tape, and finally super glue. I just use thermal tape because I've got quite a bit lying around that came with various stuff.

Tekime · Aug 22, 2003

I chopped up an old PPro heatsink and used a 60/40 mixture of AS adhesive/AS3 to keep them on:

Works pretty nice, and I (should) be able to remove them if I choose. I actually popped one off by mistake after first install, then did it again because I think I used too little adhesive.

As far as other things to cool, depending on the mobo, there may be other voltage regulators or chips worth sinking. I'd use the 'finger test' after some heavy gaming or benching to see if any chips could use it.

login211 · Aug 23, 2003

hmmm what do mosfets do exactly? anyone know where they are located on an a7n8x standard 1.04?

thanks

Amorphus · Aug 23, 2003

MOSFETs are transistors. they do stuff with the power going to your motherboard and components. I have a vague idea of what they do, but I don't trust myself to explain it in depth to you.

PS, the best way to cool the MOSFETs, also, would be to lift them up, and attach the heatsink to the metal piece on the underneath. most of the MOSFET heat is transferred hrough here, not through the plastic casing...

Stedeman · Aug 23, 2003

here you go "metal-oxide-semiconductor field-effect transistor" (MOSFET)
When most people talking about cooling the "MOSFET(s)" they are referring to the transistors with-in the power regulation circuit
PS here is the ones I made out of an old PI passive cooled sink (I got 24 - 4 pin HSs out of the one)

sandman001 · Aug 23, 2003

Amorphus said:
MOSFETs are transistors. they do stuff with the power going to your motherboard and components. I have a vague idea of what they do, but I don't trust myself to explain it in depth to you.

PS, the best way to cool the MOSFETs, also, would be to lift them up, and attach the heatsink to the metal piece on the underneath. most of the MOSFET heat is transferred hrough here, not through the plastic casing...

True, but it's much easier to just heatsink the plastic part, and they don't have any cooling to begin with, so it's not like you need to heatsink them at all.

L337 M33P · Aug 23, 2003

You only need to put heatsinks on if you are running a load of volts through your CPU - they are not totally efficient at regulating voltage and will heat up if your CPU is using a load of juice. They are typically little plastic squares with three legs on one side, the middle one is often cut off though. Coils of thick wire and large caps may also be found nearby.

Apparently it helps with stability but I doubt it - these things can run at about 125C anyway

NcBaller1985 · Aug 23, 2003

Just for your knowledge....SVC is the probably the cheapest place to order the adhesive...the other website listed has a bunch of WAY OVERPRICED stuff. This is where you wanna shop at.

arabarabian · Aug 23, 2003

The thermal adhesive was defientely the way to go. You should have gotten the temp of the MOSFETs before and after. When will you have a Prometia cooling them? Just kidding.

Thank You,
Daniel

CrashOveride · Aug 23, 2003

I am cheap and don't have a credit card so I use one dot, or maybe 2 to glue on HS's, and some thermal paste (on SB, RAM and soon mosfets) they do get hot so I know it works.

There is also a chip on the motherboard taht can be cooled, and when doing so often weilds a few more Mhz of FSB (assumign your motherboard is the problem not your RAM). Here is a link to a picture of it and its name, you will have to find it on your motherboard though. Not really sure how :/ If you ahve an NForce2 though you might check here: http://www.8rdafaq.com/news.php

Skiing Squirrel · Aug 23, 2003

Hey Stede, you did a good job cutting those up! Any differences in the stability of the system because of the Mof's being cooled better?

Stedeman · Aug 23, 2003

I used a band-saw (could just use a hack saw with) and I finished the edges with an emery wheel on the old Dremel

How to cool the mosfets?

th3n3w5up3rh3r0

Registered

vonkaar

Member

Kino

Member

Sterculus

Member

Tekime

Member

login211

Member

Amorphus

Member

Stedeman

The Half Asleep Member

sandman001

Just Freeze It

L337 M33P

Member

NcBaller1985

Member

arabarabian

Member

CrashOveride

Member

Skiing Squirrel

Member

Stedeman

The Half Asleep Member

Similar threads