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Best way to cool mosfets?

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OP
[KX3]rAge

[KX3]rAge

Member
Joined
Apr 4, 2004
Location
Canada
bah I could make those :rolleyes:
but thanks
and what about the things in this pic with the copper wire stuff on them?
abit-NF7-S_mosfets.jpg

they get really really hot on my NF7-S
 

Lejend

Member
Joined
May 7, 2004
Location
Wisconsin, USA
I use these:
http://www.sidewindercomputers.com/mimi.html

I think the ones listed above would be too big. These are smaller and I still had to use some "persuading" to get them to fit between the capacitors on my NF7-s 2.0. I used a mix of AS5 and AS adhesive. Seems to be working ok, but I didn't really notice a difference...

I think the things with copper wires on them are resistors? Not too sure, just make sure you don't short them out.
 
OP
[KX3]rAge

[KX3]rAge

Member
Joined
Apr 4, 2004
Location
Canada
Alright, any ideas on what those copper wired things are? because they get almost too hot, they are actually hot enough to burn your finger
 

Sjaak

Member
Joined
Apr 26, 2004
Location
The Netherlands
cant mount a heatsink on those..airflow is the only way.


I still like the idea of an old P1 heatsink and a jigsaw to obtain small heatsinks :D
 

Lejend

Member
Joined
May 7, 2004
Location
Wisconsin, USA
Well if they are resistors, they are made to get hot. If you cut down from 3v (or whatever) to 1.85v the energy has to go somewhere. In this case, heat. I wouldn't worry about it too much, but if you want, get a fan blowing over them.
 
OP
[KX3]rAge

[KX3]rAge

Member
Joined
Apr 4, 2004
Location
Canada
Alright
I still have a few chunks of my ?Barton 2500+ heatsink laying around that should make some nice mosfet heastinks :)
is artic silver adhesive the only way to mount them?
 

Bios24

Member
Joined
May 29, 2004
Location
Kansas City, MO
The wire-wrapped donuts are not resistors of any kind, but hell if I can remember what they are. As previously stated, there really isn't a way to cool them besides air.
 

greenman100

Disabled
Joined
May 18, 2003
Location
trying to keep all the magic smoke in
Bios24 said:
The wire-wrapped donuts are not resistors of any kind, but hell if I can remember what they are. As previously stated, there really isn't a way to cool them besides air.


they're called chokes, or coils.

they can get hot, it's not like silicon, which changes conductive and other properties signifigantly with temperature changes. (MOSFETs are silicon)
 

a c i d.f l y

Member
Joined
Apr 1, 2003
Location
Austin, TX, USA
Yeah, the "coils" are merely voltage stabilizers. No need to cool them. They have massive ones in all sorts of devices. Kind've like transformers, only smaller... they're not a device that would benefit you by cooling other than case temps by .0003°C.

AS adhesive, be it ceramique or the other stuff... best stuff we know of...

Or copper staples and glue?

-Frank
 

Jklipper

Registered
Joined
Mar 10, 2004
Location
Canada
Arctic Silver thermal adhesive is probibly pretty hard to take off once cured. Have any of you tried mixing a little bit of their as3 or 5 in with the adhesive, still make a good bond and make it easier to take off if needed (read that somewhere) anyone try this? I'm a little worried about taking it off if i decide to.
 

Korndog

Member
Joined
Nov 30, 2002
Location
California
CircuitBreaker8 said:
These chips are made to run hot lol you guys dont have to put heatsinks on every little thing that gains heat.

its called the OC-OCD (overclocking obsessive compulsive disorder).
i've seen some looney people here even put a heatsink on ethernet cards. Atleast mosfet cooling can show some gains in stabilty sometimes... otherwise, you're pretty much right.
 

CircuitBreaker8

Disabled
Joined
May 4, 2004
Location
Silver Spring, MD
Korndog said:
its called the OC-OCD (overclocking obsessive compulsive disorder).
i've seen some looney people here even put a heatsink on ethernet cards. Atleast mosfet cooling can show some gains in stabilty sometimes... otherwise, you're pretty much right.

Man you should've taken that NF7-S i sold to you, it does 240 FSB stable with no mods! Your killin my 2500-M!!! IT WANTS FSB! :eek:
 

Jklipper

Registered
Joined
Mar 10, 2004
Location
Canada
Thanks DarkDraco!!! Just what i wanted to know

I have thermal tape and got one more FSB :beer: . Have heatsinks on the Vcore, Vdimm and Vbt mosfets. Hoping to get 1 more with the adhesive ;)