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why is my 6950 vreg higher after installing twin turbo pro? - Page 2

post #11 of 42
The long thin strip of thermal pads on the stock heatsink is cooling the vrm. I'm not sure where the temp sensor is, but presumably it's very close to the strip.

On the stock heatsink, that strip of vrm is the first thing to be cooled by the fan. It's directly under the fan, so it makes sense that the stock cooler would give better temps.

How big are the heatsinks on your vrm? Post a picture.
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post #12 of 42
This is a common problem with aftermarket coolers. Those crappy stick on heatsinks just don't cool the VRMs are well as the reference coolers. Aftermarket coolers may cool the core better, but they generally cool everything else much worse.
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post #13 of 42
Quote:
Originally Posted by bluetroll View Post
i'm pretty sure i have a heatsink of every spot...

this is so strange.
Again, did you put a sink on the lone vrm??
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post #14 of 42
I've very interested in this thread. I have a 6950 and would like to use the Twin Turbo Pro as opposed to the Extreme since it is so big. I have a non-reference 6950 its about 1 inch shorter than a standard one, I have the XFX one. How are the GPU temps with the cooler and what do you have the fan speed set to if I might ask?
post #15 of 42
Quote:
Originally Posted by homestyle View Post
Look at the stock cooler. Any place that had thermal pads need to be cooled on the card.
The long grey strip of thermal pad right under the fan is the VRM section. I'm sure there are possibly 8 chips there and if there is no heatsink on them, that card will not last long, more so if its OC. The VRMs are constantly producing heat and have to have heatsinks on them or it will blow the card. Just blowing air on them is not good enough. They must dissipate heat through heatsinks to be cooled.
     
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post #16 of 42
The vrm strip on the left is obvious, but the one on the far right, up top by itself isn't quite so obvious.
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post #17 of 42
Quote:
Originally Posted by tsm106 View Post
The vrm strip on the left is obvious, but the one on the far right, up top by itself isn't quite so obvious.
Yeah, I forget about that one.
     
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post #18 of 42
Thread Starter 
Quote:
Originally Posted by homestyle View Post
Look at the stock cooler. Any place that had thermal pads need to be cooled on the card.
i got heatsinks on all of them...

however, on that line of vram to the left, there's about 2 modules that seem smaller. i may have to modify the heatsinks as i think they may be not quite touching the modules well (there's a piece in between them that MAY be higher than the smaller vram modules.)
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post #19 of 42
Quote:
Originally Posted by bluetroll View Post
i got heatsinks on all of them...

however, on that line of vram to the left, there's about 2 modules that seem smaller. i may have to modify the heatsinks as i think they may be not quite touching the modules well (there's a piece in between them that MAY be higher than the smaller vram modules.)
Those aren't the vrams, those are inductors. The vrams are the small square metallic things. There's a row of them on the left looking at the cooler and there's one on the right by itself.
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post #20 of 42
Thread Starter 
ya... i'm pretty sure i've got a heatsink of every spot where there was a thermal pad.

this is so strange.



this is what i had before:



this is what i changed last night.



could it be that the lone heatsink of the left isn't seated well?
Edited by bluetroll - 5/24/11 at 7:33am
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