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Very hot VRM's, Looking for ways to cool them silently - Page 2

post #11 of 27
Quote:
Originally Posted by Farih View Post

Dont really want more fans especially not a 40mm fan. (the smaller they are the more noise they make)

The few fans i use all run between 500 and 650rpm, silence above anything else for me biggrin.gif

40mm's spin faster, but you can turn down their rpms and in this case the main advantage is that you can place them directly by the VRM heatsink for optimal air flow where you want it.

Noise is a product of air movement, vibration and bearing friction.
This looks interesting:
http://www.sunonusa.com/index2.asp?f=technology&p=maglev

the 40mm variant is rated at 19dB @ 4500rpm. Turn this down and I'm sure it wont be more audible then other fans in your case.
Hopefully I'll soon be able to test mine and it's effect on my VRM temps.

Mine don't run quite that hot (94C in Furmark with 1100/1650 oc), but I want to make some headroom for more OC :-).
post #12 of 27
thicker thermal tape. 3m variants.........http://multimedia.3m.com/mws/mediawebserver?mwsId=SSSSSu7zK1fslxtU4x2v4x_Gev7qe17zHvTSevTSeSSSSSS--
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post #13 of 27
Quote:
Originally Posted by Farih View Post

Dont really want more fans especially not a 40mm fan. (the smaller they are the more noise they make)

The few fans i use all run between 500 and 650rpm, silence above anything else for me biggrin.gif

Think i have to save up for a GPU block and an extra radiator frown.gif
Was hoping to find a better heatsink or so first though....

For what it's worth, I think you'd be okay adding your GPU to your loop with the two radiators you currently have... smile.gif

Also, a fan running at 500 RPM just barely moving air past the GPU will still make a difference! As long as you are displacing the hot air, the heatsink will be able to transfer heat away from the VRMs.
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post #14 of 27
Thread Starter 
Quote:
Originally Posted by glina View Post

40mm's spin faster, but you can turn down their rpms and in this case the main advantage is that you can place them directly by the VRM heatsink for optimal air flow where you want it.

Noise is a product of air movement, vibration and bearing friction.
This looks interesting:
http://www.sunonusa.com/index2.asp?f=technology&p=maglev

the 40mm variant is rated at 19dB @ 4500rpm. Turn this down and I'm sure it wont be more audible then other fans in your case.
Hopefully I'll soon be able to test mine and it's effect on my VRM temps.

Mine don't run quite that hot (94C in Furmark with 1100/1650 oc), but I want to make some headroom for more OC :-).

Report back once you got it tested thumb.gif

Btw, i am such a silence freak that i even replaced Gentle Typhoons that were spinning around 600rpm because they still wasnt silent enough for me.

Quote:
Originally Posted by SectorNine50 View Post

For what it's worth, I think you'd be okay adding your GPU to your loop with the two radiators you currently have... smile.gif

Also, a fan running at 500 RPM just barely moving air past the GPU will still make a difference! As long as you are displacing the hot air, the heatsink will be able to transfer heat away from the VRMs.

I might just get a block for the GPU and try in this loop.
They are thin rads though and the fans spin really slowly.

Btw, the case/rad fans spin around 500 to 650rpm but the Gelid Icy Vision on the GPU around 950~1050rpm.
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post #15 of 27
I don't think that you want thermal tape. You want a thermal pad. I've heard good things about fujipoly extreme.
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post #16 of 27
Quote:
Originally Posted by Farih View Post

Report back once you got it tested thumb.gif

So putting that 40mm fan at the side did absolutely nothing.
I put it on top of the card (at the back of where VRMs are located) instead and that gave me 3C less. Nothing special.

I then exchanged the thermal pad under my VRM heatsink to Fujipoly Extreme and voila! Temps dropped by a whopping 14C under Furmark. With my daily O/C of 1100MHz i now get a max 72C on VRMs in gaming (and a peak of 82C under Furmark).

This is on a 7950 Vapor-X.
post #17 of 27
I would look at the Enzotech heatsinks...

It's weird because hardware.fr actually looked at the 7950 TFIII and didn't find any temp problem (they record with an IR sensor):
http://www.hardware.fr/articles/853-8/msi-radeon-hd-7950-twin-frozr-iii-test.html
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post #18 of 27
Quote:
Arent there better heatsinks ? maybe full copper one's ?

Not sure what heatinks you have at the moment, but have you had a look at the Enzotechs ? damn ninjed again ninja.gif

http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=Enzotech

also this
Quote:
I don't think that you want thermal tape. You want a thermal pad. I've heard good things about fujipoly extreme.
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post #19 of 27
But how will you hold the pad and heatsink down without adhesive?
post #20 of 27
Quote:
Originally Posted by glina View Post

So putting that 40mm fan at the side did absolutely nothing.
I put it on top of the card (at the back of where VRMs are located) instead and that gave me 3C less. Nothing special.

I then exchanged the thermal pad under my VRM heatsink to Fujipoly Extreme and voila! Temps dropped by a whopping 14C under Furmark. With my daily O/C of 1100MHz i now get a max 72C on VRMs in gaming (and a peak of 82C under Furmark).

This is on a 7950 Vapor-X.

how well would this work when putting it in between a VRM copper heatsink? i have thermal tape on the heatsinks to the VRM's but from what im reading on the specs of the heat transfer; i was pretty impressed ! its like thermal paste but in a pad? but is the pad sticky? enough to hold heatsinks upside down?
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