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 Post subject: Thermal Paste Application
PostPosted: Sun Dec 30, 2012 4:20 pm 
Coppermine
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Old school cpu's place a thin coat of thermal paste and the heatsink sat directly on top of the cpu.

Now today we have heatsnks that make just a bit of contact with the cpu so my question is do you still apply thermal paste over the entire cpu or just the portion of the cpu that will make contact with the heatsink?


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 Post subject: Re: Thermal Paste Application
PostPosted: Sun Dec 30, 2012 4:23 pm 
Smithfield
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Rice grain sized drop in the center of the heat spreader, put the heat sink on, give it a few twists, done.


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 Post subject: Re: Thermal Paste Application
PostPosted: Sun Dec 30, 2012 10:23 pm 
Coppermine
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To be more exact, how would you apply thermal paste to this CPU/Heatsink.

http://www.technic3d.com/review/kuehler ... tion/1.htm


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 Post subject: Re: Thermal Paste Application
PostPosted: Mon Dec 31, 2012 12:27 am 
Smithfield
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Same process as I described. The theory is you put the thermal grease in the center and let the pressure of the heat sink spread it out for you. the other approach would be to put a rice grain sized down and spread it around with a credit card or a finger covered in saran wrap


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 Post subject: Re: Thermal Paste Application
PostPosted: Mon Dec 31, 2012 3:43 am 
Coppermine
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I've seen video of the dime size drop of thermal and using a credit card to spread it all over the CPU, giving it a super thin layer of thermal over the CPU.

My heatsink has three heat pipes that come in direct contact with the CPU. Can't see spreading thermal over the entire CPU. Should I just thinly spread the thremal only over the part of the CPU where the heatsink connects? This is a totally new type of heatsink for me that I have ever worked with before.


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 Post subject: Re: Thermal Paste Application
PostPosted: Mon Dec 31, 2012 5:01 am 
Clawhammer
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Only three heatpipes...huh? The entire block must come in contact for any sort of efficient transfer to occur. What cooler are you meddling with?

FTR, I use the credit card method and can probably spread TIM perfectly from end to end and side to side blindfolded. Go visit Youtube, hundreds of entries on every application imaginable.


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 Post subject: Re: Thermal Paste Application
PostPosted: Mon Dec 31, 2012 8:45 am 
Coppermine
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21st century dude. 3 copper pipes make contact with CPU then go away from the CPU into a heatsink. 1 fan pushes and the other fan pulls air away from the heatsink and out the pc. Those old school heatsinks that sit flat on top of the CPU are done with.


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 Post subject: Re: Thermal Paste Application
PostPosted: Mon Dec 31, 2012 9:07 am 
Clawhammer
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Okay, let's try this again and bit slower since you're not comprehending what I'm saying. Sure you have heat pipes - great - but a block is still needed to transfer heat off the die lid for the physics to work. What is your make/model?

Image


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 Post subject: Re: Thermal Paste Application
PostPosted: Mon Dec 31, 2012 5:11 pm 
Coppermine
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robertco300 wrote:
My heatsink has three heat pipes that come in direct contact with the CPU. Can't see spreading thermal over the entire CPU. Should I just thinly spread the thremal only over the part of the CPU where the heatsink connects? This is a totally new type of heatsink for me that I have ever worked with before.

What CPU cooler are you using? And are you sure it's compatible with the CPU? I have installed a dozen CPU coolers and I have never seen one where the CPU cooler doesn't cover the complete CPU. It's practically necessary to ensure the maximum amount of heat transfer.


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 Post subject: Re: Thermal Paste Application
PostPosted: Tue Jan 01, 2013 3:20 pm 
Million Club - 5 Plus
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Quote:
I have never seen one where the CPU cooler doesn't cover the complete CPU


stock Intel sinks dont. they have a circular contact area that coverts maybe 80-85 % of the cpu heatspreader. thats based on my core 2 4300 and i5 3570k Intel HSFs. not that I actually ever used them.

anyway, I use an thin "X" shape spread of thermal compound. twist it a little when its on, then tighten it down.


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 Post subject: Re: Thermal Paste Application
PostPosted: Tue Jan 01, 2013 3:47 pm 
Smithfield
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I should've just pulled this out from the start: http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/11. Granted they used a heat sink that doesn't have direct heat pipe contacts, but the theory shouldn't really change that drastically.


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 Post subject: Re: Thermal Paste Application
PostPosted: Thu Jan 03, 2013 4:31 pm 
Coppermine
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btdog wrote:
robertco300 wrote:
My heatsink has three heat pipes that come in direct contact with the CPU. Can't see spreading thermal over the entire CPU. Should I just thinly spread the thremal only over the part of the CPU where the heatsink connects? This is a totally new type of heatsink for me that I have ever worked with before.

What CPU cooler are you using? And are you sure it's compatible with the CPU? I have installed a dozen CPU coolers and I have never seen one where the CPU cooler doesn't cover the complete CPU. It's practically necessary to ensure the maximum amount of heat transfer.



Google "Dark Knight II heatsink"


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 Post subject: Re: Thermal Paste Application
PostPosted: Fri Jan 04, 2013 4:29 am 
Coppermine
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LatiosXT wrote:
I should've just pulled this out from the start: http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/11. Granted they used a heat sink that doesn't have direct heat pipe contacts, but the theory shouldn't really change that drastically.

Wow, Latios - that is a really good article. Thanks.

Also, they had a follow up article linked on the one you posted that used a Heatsink with direct heat pipe contact - What is the Best Way to Apply Thermal Grease - Part 2. Just an FYI.


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 Post subject: Re: Thermal Paste Application
PostPosted: Fri Jan 04, 2013 10:23 am 
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what they do not tell you is that these are all fresh applications of thermal compound, the numbers will improve as the compound cures. artic silver 5 takes about a month to cure, and includes cycling the computer on and off during that time period, leaving the machine on 24 hours a day does not help it cure.


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 Post subject: Re: Thermal Paste Application
PostPosted: Fri Jan 04, 2013 11:04 am 
Smithfield
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g.m.waters (red ranger3) wrote:
what they do not tell you is that these are all fresh applications of thermal compound, the numbers will improve as the compound cures. artic silver 5 takes about a month to cure, and includes cycling the computer on and off during that time period, leaving the machine on 24 hours a day does not help it cure.

But great cooling performance on initial application implies that it's already in an optimal-as-possible configuration. Curing would decrease the temperatures even more, but it would do it for all configurations, no?


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 Post subject: Re: Thermal Paste Application
PostPosted: Fri Jan 04, 2013 11:07 am 
8086
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LatiosXT wrote:
g.m.waters (red ranger3) wrote:
what they do not tell you is that these are all fresh applications of thermal compound, the numbers will improve as the compound cures. artic silver 5 takes about a month to cure, and includes cycling the computer on and off during that time period, leaving the machine on 24 hours a day does not help it cure.

But great cooling performance on initial application implies that it's already in an optimal-as-possible configuration. Curing would decrease the temperatures even more, but it would do it for all configurations, no?


I think that's the idea. Some compounds might cure to perform better than others, even if the performance comparison right after the application was reversed. Regardless, if you buy a good compound and apply it decently, we're debating over a few degrees, which is a moot point for most users.


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