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[PCEvaluation] Intel i7 3770K Temperature Measured Without IHS - Page 16

post #151 of 156
I have a feeling replacing the TIM with some really good stuff is going to be fairly common for OCers.
    
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post #152 of 156
I find it interesting that people haven't found their way over to my modifying the IHS of Nvidia GPU's guide yet. I've got alot of evidence of the increase in performance and decrease in temperatures when removing the IHS. Naturally, having two layers of TIM and an added element that needs contact for heat suppression, the temperatures will be higher. Coming from the knowledge I have of decreased temperatures with removing the IHS on a chip, you should experience lower temperatures without the IHS.

Intel may have done a good job with the amount of TIM and the surface quality of the IHS between the area of contact between the die and IHS. However, you won't beat a lapped heatsink directly on the die of a chip. A lapped cooler directly on the die will barely need any TIM at all. The surface quality of the die is glass, its silicon, its the best flat/non-porous surface you'll probably get. The IHS coating of zink I believe, will contain a bubbly texture on the surface, if you don't believe me, hit it a few times with 2000grit sand paper and you'll notice it on the 1st or 2nd stroke on the sand paper. The electroplating of the zink on the copper creates a sort of bubbly texture, that's just how it is. That's why the IHS for all of intel's chips aren't like a chrome like mirror finish. If it was a perfectly smooth surface, it'd be like chrome, or a mirror. That matte finish is the bubbles that you see in the surface.

The article is good for explaining different thermal pastes but I think it'll just be time before we start getting more evidence that removing the IHS completely does infact decrease temperatures quite substantially. I got a good 10C+ temperature drop when I removed the IHS on my 560...

I agree with the 3d transistors causing more heat though! Moving from 1 surface causing heat to 3 would prove to increase temperatures. However, I think it would have higher load temperatures, but in the same, when its idle, you should have lower idle temperatures since the cooling would efficiently reach the 3 surfaces of the transistors to cool them better when not under load....but I dunno...its just a guess
post #153 of 156
Don't know it that video was posted before:

http://www.xtremesystems.org/forums/showthread.php?280892-3770k-IHS-Removals-CPU-temp-dropped-from-79C-to-71C

Quote:
before removing the IHS
3770k at 4500MHz @ 1.15v with original TIM - room temp at 25c
max temp -> 79c

and after removing the IHS and replaced the original TIM for Artic Silver
3770k at 4500MHz @ 1.15v with Artic Silver - room temp at 28c
max temp -> 71c

So a drop of nearly 9-10°C (at constant room temperature) in full.
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post #154 of 156
Quote:
Originally Posted by Cakewalk_S View Post

I find it interesting that people haven't found their way over to my modifying the IHS of Nvidia GPU's guide yet. I've got alot of evidence of the increase in performance and decrease in temperatures when removing the IHS. Naturally, having two layers of TIM and an added element that needs contact for heat suppression, the temperatures will be higher. Coming from the knowledge I have of decreased temperatures with removing the IHS on a chip, you should experience lower temperatures without the IHS.
Intel may have done a good job with the amount of TIM and the surface quality of the IHS between the area of contact between the die and IHS. However, you won't beat a lapped heatsink directly on the die of a chip. A lapped cooler directly on the die will barely need any TIM at all. The surface quality of the die is glass, its silicon, its the best flat/non-porous surface you'll probably get. The IHS coating of zink I believe, will contain a bubbly texture on the surface, if you don't believe me, hit it a few times with 2000grit sand paper and you'll notice it on the 1st or 2nd stroke on the sand paper. The electroplating of the zink on the copper creates a sort of bubbly texture, that's just how it is. That's why the IHS for all of intel's chips aren't like a chrome like mirror finish. If it was a perfectly smooth surface, it'd be like chrome, or a mirror. That matte finish is the bubbles that you see in the surface.
The article is good for explaining different thermal pastes but I think it'll just be time before we start getting more evidence that removing the IHS completely does infact decrease temperatures quite substantially. I got a good 10C+ temperature drop when I removed the IHS on my 560...
I agree with the 3d transistors causing more heat though! Moving from 1 surface causing heat to 3 would prove to increase temperatures. However, I think it would have higher load temperatures, but in the same, when its idle, you should have lower idle temperatures since the cooling would efficiently reach the 3 surfaces of the transistors to cool them better when not under load....but I dunno...its just a guess

My personal guess about 3D transistors temps at idle is since the heat is displaced horizontally. It heats up the transistor next to it so it never cools down even at idle. And this is why we see load temps get so high cause you get a compounding effect rather than a steady rise you get a rise in temps with more voltage that you don't expect because it's muiltaplying itself by its neighboring transistors heating . Think of if you had three devices in one room venting heat vertically rather than one large surface venting heat upwards. If one of the three devices heats up the other two will follow with small heat increase. I keep saying a two surfaces in a pitch roof shape will displace far more heat than 3D transistors. But for efficiency these 3D transistors probably are the best, but just not for heat. I agree with everything you said, but I just think this reason is why we don't see lower idle temps.
I still want to see real test I know if I had one by now and I saw no other test I would have done it by now I just don't own a chip yet.
 
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post #155 of 156
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post #156 of 156
That's more like it...a drop but not a big one as it isn't the main cause. Like I've been saying the entire time.
    
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