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I just screwed myself didn't I? (changed TIM on XFX 6970) - Page 9

post #81 of 126
Why should you use a X method on a ati gpu? the die is wayyy smaller then a NVIDIA...
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post #82 of 126
Quote:
Originally Posted by tsm106 View Post
That's not applicable to gpus because they are under spring tension. You get the screws tight enough to get the springs to push on the pcb.



Like I wrote way back man, if you can't get a good application, just spread it on with a credit card. It shouldn't be this hard, at least enough to warrant as many posts as you've gotten. The other thing, I hate as5 ofr a variety of reasons, but right now the main one for you is it's viscosity. It's damn thick and if you don't soften it first then spreading is a good way of getting even application.
This

I use ceramique and old hotel plastic key cards (like a credit card.) I use ceramique because that method can get sloppy (and I'm just not the neatest), but in the end you can get a really nice even coat that's super thin.
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post #83 of 126
Quote:
Originally Posted by tsm106 View Post
That's not applicable to gpus because they are under spring tension. You get the screws tight enough to get the springs to push on the pcb.



Like I wrote way back man, if you can't get a good application, just spread it on with a credit card. It shouldn't be this hard, at least enough to warrant as many posts as you've gotten. The other thing, I hate as5 ofr a variety of reasons, but right now the main one for you is it's viscosity. It's damn thick and if you don't soften it first then spreading is a good way of getting even application.
AS5 thick? Crap is like soup. MX-4 and Ic7 are thick. Hell IC7 is like clay.
 
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post #84 of 126
Quote:
Originally Posted by fishhawk View Post
AS5, is just fine-i have used it for years, in fact i just replaced the stock tim on my ASUS 5850 with AS5, my max temps with my sig rig oc on that card only gets to 66c, %100 stressed, yes becarefull putting it on, but it works great, even my oc,ed 1090t has AS5 and i get totaly great temps. On all my GPU,s i spred a thin coat on both die and cooler, my cpu,s i always lap so all i do is tint both and rice size dot.
Yes I believe I have AS on my 4850. As long as its not oozing out when you put the HSF back on your fine, if its oozing out then that means you put way too much on.
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post #85 of 126
Quote:
Originally Posted by IIVisionII View Post
Alright. Got it back in again. Here's some pics. The first one is what the heatsink looked like after i removed it after attempt #2. The next one is my attempt at a star pattern.

Checking temps now.
You need MORE TIM. MOAR.

Applying tim on an exposed die versus an IHS is as different as you can get. For an exposed die you want the excess spilling over the sides. You want the entire die covered. You see in your first picture, the entire die is not covered. That is producing heat.

Of course, I'm oversaying it, but too many people are saying you are using too little. The right amount is when you have just a smidge spilling over the sides. It will take a few applications to know the right amount. You see the AMD application? That was the right amount. Just a smidge was spilling over.

The IHS is usually 30-100% larger than the actual die. So covering the whole IHS is not as critical because in most cases, the spread will cover the die underneath. But for exposed dies, make sure a little bit of the excess spills over.


Quote:
Originally Posted by tsm106 View Post
That's not applicable to gpus because they are under spring tension. You get the screws tight enough to get the springs to push on the pcb.
The springs on the 6900 cards are not for pushing against the bracket to tighten down on the pcb. They are VERY weak springs. I can blow on them and make the compress. The springs are there so the bracket/screws comes off easily after unscrewing them. They also keep the screws from coming away from the bracket.

1 thing you can try is to do a popsicle mod. Get some flat toothpicks or wood popsicle sticks and stick them under the square bracket. That should give you more pressure on the gpu.
Edited by homestyle - 8/6/11 at 11:32pm
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post #86 of 126
Thread Starter 
I've gotten to the point where the thermal pads are getting more and more damaged from all the removals. My last attempt resulted in 100C temps on GPU #2 in crysis. I just requested the RMA...
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post #87 of 126
Doesn't it take like a week for the thermal paste to set in and reach it's optimal heat transfer level?
post #88 of 126
Thread Starter 
Quote:
Originally Posted by Jinru View Post
Doesn't it take like a week for the thermal paste to set in and reach it's optimal heat transfer level?
It does, but that's 2-5 C difference. It's reaching 100 C now.
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post #89 of 126
The best thermal grease isn't MX-4 which what I have.

The RARE Shin-Etsu X23-7783D is the best one to get.
http://www.frozencpu.com/products/89..._-_5_Gram.html

I got references from Corsair Hydro series which it has all of them pre-applied.
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post #90 of 126
Liquid ultra, 10 dollars, and keeps my GPU 20C cooler. Great thermal paste.
    
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