mosfet cooling

flounder405 · 13-December-04, 11:10 AM

figure this would be a allright place to ask this.Im wanting to add heatsinks to my mosfets ,i looked at what Zenn suggested on attaching em with superglue and such ,but the question at hand is ,is the anything to gain from doing this? and also does it matter if the sinks dont cover all the mosfet (sides showing a little).I have some tweakmonster heatsinks for ram i was thinkin of using and they are not as wide as the mosfet chips.
thanks ya,cant wait to hear for anyone.

ZENNZZO · 13-December-04, 11:36 AM

Quote:

Originally Posted by flounder405


	figure this would be a allright place to ask this.Im wanting to add heatsinks to my mosfets ,i looked at what Zenn suggested on attaching em with superglue and such ,but the question at hand is ,is the anything to gain from doing this? and also does it matter if the sinks dont cover all the mosfet (sides showing a little).I have some tweakmonster heatsinks for ram i was thinkin of using and they are not as wide as the mosfet chips. thanks ya,cant wait to hear for anyone.

If you have got a spare thermal probe lay it in and around the mosfets, they cook! 100c +
I think there is a noticable difference in O/C stability when the MOSFETs are cooled, it can't hurt.

My thinking is a bit too big is better than cooling just the center...

nev_payne · 13-December-04, 02:27 PM

Well theres Zenns own creation:

Looks to be ducted fan and Sinks on the MSOFETs. If dremel/metal saw work is a skill you have, slice up an old slot Athlon/P3/Duron heatsink and use that with either thermal adeisive tape, or epoxy on the corners and termal paste in the middle. The taller the heatsink you choose to saw/dremel the better. Personally I'd go for an old Socket based heatsink over 2" tall for good results.

Alternatively you could water cool your MOSFETS If you have an H20 system in place. These are taken from overclockers.com, and the page is HERE:

Courtesy of Overclockers.com

flounder405 · 13-December-04, 02:42 PM

ya i was thinking of choppin a old cooler ,but i only have one and its pretty tall ,might look a littlle goofy.But i understand the bigger the better line of thought of zenn's.If i could only get my jewlers saw back so i could chop it upill go that route.

4rm4g3dd0n · 13-December-04, 02:47 PM

lol now water cooled mosftes, that is tight

nev_payne · 13-December-04, 02:57 PM

Those pictures are dated September 2003 and the board used is the original NF7, tight as you say, but even with this idea being over a year old, it hasnt been picked up at all by very many modders.

ZENNZZO · 13-December-04, 04:06 PM

Quote:

Originally Posted by nev_payne


	Those pictures are dated September 2003 and the board used is the original NF7, tight as you say, but even with this idea being over a year old, it hasnt been picked up at all by very many modders.

Reason being, Mosfets are arainged differently on almost every board. Manufacturing a different product for that many applications would make the price 10x the cost of a CPU block at least.

FeRaL · 13-December-04, 04:25 PM

Quote:

Originally Posted by nev_payne


	Those pictures are dated September 2003 and the board used is the original NF7, tight as you say, but even with this idea being over a year old, it hasnt been picked up at all by very many modders.

That stuff is old news man... I remember seeing it when if first came out over on that site.

Arkangyl · 13-December-04, 05:30 PM

I think to cool the MOSFET's just buy some, well, MOSFET ramsinks and make sure there's some airflow over them.

Personally I want to try and make a custom exaust system similar to Abit's OTES system and create my 'Arkangyl' board to compete with the Fatal1ty's

flounder405 · 13-December-04, 06:37 PM

ark i would if i could but im broke man and having to use what i have ,here is the inventory old cooler,the ram heat sink mentioned earlier,a package of jb weld .Plus its more fun trying to think and use what ya got,at least for me it is.

Arkangyl · 13-December-04, 07:40 PM

in that case just hack up an old heatsink, if you dont have a thermal bonding agent then apply normal thermal grease with TINY drops of superglue on the very corners of the MOSFET, I believe that this has been shown to hold the HS on just fine

13-December-04, 11:10 AM		#1 (permalink)
flounder405 The Mack Daddy	mosfet cooling figure this would be a allright place to ask this.Im wanting to add heatsinks to my mosfets ,i looked at what Zenn suggested on attaching em with superglue and such ,but the question at hand is ,is the anything to gain from doing this? and also does it matter if the sinks dont cover all the mosfet (sides showing a little).I have some tweakmonster heatsinks for ram i was thinkin of using and they are not as wide as the mosfet chips. thanks ya,cant wait to hear for anyone.

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13-December-04, 02:27 PM		#3 (permalink)
nev_payne Apex Tech God	Well theres Zenns own creation: Looks to be ducted fan and Sinks on the MSOFETs. If dremel/metal saw work is a skill you have, slice up an old slot Athlon/P3/Duron heatsink and use that with either thermal adeisive tape, or epoxy on the corners and termal paste in the middle. The taller the heatsink you choose to saw/dremel the better. Personally I'd go for an old Socket based heatsink over 2" tall for good results. Alternatively you could water cool your MOSFETS If you have an H20 system in place. These are taken from overclockers.com, and the page is HERE: Courtesy of Overclockers.com

13-December-04, 02:42 PM		#4 (permalink)
flounder405 The Mack Daddy	ya i was thinking of choppin a old cooler ,but i only have one and its pretty tall ,might look a littlle goofy.But i understand the bigger the better line of thought of zenn's.If i could only get my jewlers saw back so i could chop it upill go that route.

13-December-04, 02:47 PM		#5 (permalink)
4rm4g3dd0n Apex Elite Tech	lol now water cooled mosftes, that is tight

13-December-04, 02:57 PM		#6 (permalink)
nev_payne Apex Tech God	Those pictures are dated September 2003 and the board used is the original NF7, tight as you say, but even with this idea being over a year old, it hasnt been picked up at all by very many modders.

13-December-04, 05:30 PM		#9 (permalink)
Arkangyl Hoe-lier than Thou	I think to cool the MOSFET's just buy some, well, MOSFET ramsinks and make sure there's some airflow over them. Personally I want to try and make a custom exaust system similar to Abit's OTES system and create my 'Arkangyl' board to compete with the Fatal1ty's

13-December-04, 06:37 PM		#10 (permalink)
flounder405 The Mack Daddy	ark i would if i could but im broke man and having to use what i have ,here is the inventory old cooler,the ram heat sink mentioned earlier,a package of jb weld .Plus its more fun trying to think and use what ya got,at least for me it is.

13-December-04, 07:40 PM		#11 (permalink)
Arkangyl Hoe-lier than Thou	in that case just hack up an old heatsink, if you dont have a thermal bonding agent then apply normal thermal grease with TINY drops of superglue on the very corners of the MOSFET, I believe that this has been shown to hold the HS on just fine