Delid thermal paste with Noctua?

[Woxter]

Hi, I'm thinking of buying the delid die 2 and delid my i7 4790K, it been overclocked at 4.7 GHz for more than 2 years, and its warranty is only a month from ending. Its starting to fall to 84 degrees when encoding HEVC 10 bit 2-Pass encoding and reaching 80 with H.264 as of gaming it gets up to 75 degrees, a few weeks it couldn't get past 65 degrees with the same games.
I haven't changed thermal paste in 2 years so I guess I'll have to do that.

My questions, someone told me the delid thermal paste Coollaboratory Liquid Ultra is corrosive so I shouldn't use Aluminium CPU heatsink, so would there be a problem using this thermal compound with my Noctua NH-D14?? Also why is there a specific type of thermal compound to do this delid? Why can't I use my NH-D14 with its thermal paste? Otherwise are there any other thermal paste for delid? Noctua?

Thanks, I'm really stuck with this one.

 

[CompuTronix]

Woxter,

The base of your Noctua NH-D14 is not aluminum; it's nickel plated copper, so you can use any Thermal Interface Material (TIM) you like.

It isn't necessary to use liquid metal TIM such as CoolLaboratory Liquid Ultra between the CPU's Integrated Heat Spread (IHS) and the base of your cooler. However, it IS necessary to use liquid metal between the top of the Die and the underside of the IHS. There's actually three products that can be used, listed according to thermal conductivity:

Liquid Metal TIM

Thermal Grizzly Conductonaut - 73.0 W/mk (Newest Product)
CoolLaboratory Liquid Ultra - 38.4 W/mk
CoolLaboratory Liquid Pro - 32.6 W/mk

Typical Silicon TIM

Arctic Silver 5 - 9.0 W/mk
Gelid GC Extreme: 8.5 W/mk
Arctic Cooling MX4 - 8.5 W/mk

Of the three liquid metal TIM's, Liquid Ultra is prefered because it has a thicker consistency, and of the three, Thermal Grizzly Conductonaut contains the highest percentage of "Indium", which has superior thermal conductivity at 81.8 W/mk.

Prior to 3rd Generation Ivy Bridge processors, Intel used Indium Solder to attach the IHS to the Die, so 2nd Generation Sandy Bridge processors were the last thermally predictable and well behaved mainstream desktop processors that Intel manufactured.

Liquid metal is necessary due to a phenomenon known as "pumping" or "pump out". Typical silicon TIM will ooze out from between the Die and IHS over a relatively brief period of time (a few months) due to thermal cycling, which will cause Core temperatures to increase, requiring the TIM to be repeatedly reapplied. Liquid metal TIM is much more resistant to pump out, and will remain in place for several years with stable Core temperatures.

For more information, you might want to give these a read:

Indium Corporation - http://www.indium.com/thermal-interface-materials/
The Truth about CPU Soldering - http://overclocking.guide/the-truth-about-cpu-soldering/

If you prefer to have your 4790K professionally de-lidded, then Silicon Lottery - https://siliconlottery.com/collections/all/products/delid - offers such a service. Just send your processor to them and they'll take good care of you.

CT

 

[Woxter]

Woxter,

The base of your Noctua NH-D14 is not aluminum; it's nickel plated copper, so you can use any Thermal Interface Material (TIM) you like.

It isn't necessary to use liquid metal TIM such as CoolLaboratory Liquid Ultra between the CPU's Integrated Heat Spread (IHS) and the base of your cooler. However, it IS necessary to use liquid metal between the top of the Die and the underside of the IHS. There's actually three products that can be used, listed according to thermal conductivity:

Liquid Metal TIM

Thermal Grizzly Conductonaut - 73.0 W/mk (Newest Product)
CoolLaboratory Liquid Ultra - 38.4 W/mk
CoolLaboratory Liquid Pro - 32.6 W/mk

Typical Silicon TIM

Arctic Silver 5 - 9.0 W/mk
Gelid GC Extreme: 8.5 W/mk
Arctic Cooling MX4 - 8.5 W/mk

Of the three liquid metal TIM's, Liquid Ultra is prefered because it has a thicker consistency, and of the three, Thermal Grizzly Conductonaut contains the highest percentage of "Indium", which has superior thermal conductivity at 81.8 W/mk.

Prior to 3rd Generation Ivy Bridge processors, Intel used Indium Solder to attach the IHS to the Die, so 2nd Generation Sandy Bridge processors were the last thermally predictable and well behaved mainstream desktop processors that Intel manufactured.

Liquid metal is necessary due to a phenomenon known as "pumping" or "pump out". Typical silicon TIM will ooze out from between the Die and IHS over a relatively brief period of time (a few months) due to thermal cycling, which will cause Core temperatures to increase, requiring the TIM to be repeatedly reapplied. Liquid metal TIM is much more resistant to pump out, and will remain in place for several years with stable Core temperatures.

For more information, you might want to give these a read:

Indium Corporation - http://www.indium.com/thermal-interface-materials/
The Truth about CPU Soldering - http://overclocking.guide/the-truth-about-cpu-soldering/

If you prefer to have your 4790K professionally de-lidded, then Silicon Lottery - https://siliconlottery.com/collections/all/products/delid - offers such a service. Just send your processor to them and they'll take good care of you.

CT

Thank you! That was just what I needed help with!
I prefer to do it myself, as it is cheaper to buy the material and if I ever change CPU I can delid it as well.
I've only got one question left: I understand that a CoolLaboratory Liquid Ultra must be aplied to the Silicon "Glass" inside the CPU, but what do I have to use for "Gluing" the CPU back to the IHS? Any recommended product?

By the way will Thermal Grizzly Conductonaut do a better job than CoolLaboratory liquid ultra at lowing my temps, what is the difference between both in terms of reliability? Price is not a concern.

Once again thanks!

 

[CompuTronix]

Woxter,

Take a look at this Thread: Delid questions - http://www.overclock.net/t/1616085/delid-questions

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker - https://www.amazon.com/Permatex-82180-Maximum-Resistance-Silicone/dp/B0002UEN1U/ref=sr_1_11?ie=UTF8&qid=1479329784&sr=8-11&keywords=silicone

Conductonaut will drop your temperatures another degree or two below Liquid Ultra. However, Silicon Lottery prefers Liquid Ultra because it has a slightly thicker consistency, so it's less runny and has less tendency to drip if you apply a little too much.

Remember that unlike silicon TIM, liquid metal TIM is electrically conductive, so you must be extremely careful when working with it to guard against getting even the smallest stray droplet on any electronic components or circuit paths.

Silicon Lottery has a Forum at Overclock.net which has a wealth of information: http://www.overclock.net/f/18068/silicon-lottery

CT

 

[Woxter]

Woxter,

Take a look at this Thread: Delid questions - http://www.overclock.net/t/1616085/delid-questions

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker - https://www.amazon.com/Permatex-82180-Maximum-Resistance-Silicone/dp/B0002UEN1U/ref=sr_1_11?ie=UTF8&qid=1479329784&sr=8-11&keywords=silicone

Conductonaut will drop your temperatures another degree or two below Liquid Ultra. However, Silicon Lottery prefers Liquid Ultra because it has a slightly thicker consistency, so it's less runny and has less tendency to drip if you apply a little too much.

Remember that unlike silicon TIM, liquid metal TIM is electrically conductive, so you must be extremely careful when working with it to guard against getting even the smallest stray droplet on any electronic components or circuit paths.

Silicon Lottery has a Forum at Overclock.net which has a wealth of information: http://www.overclock.net/f/18068/silicon-lottery

CT

Thanks , now I know everything I needed to know before deliding my cpu.