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Liquid Metal on Asus DirectCU II - GTX 670 Possible ?

 
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post #1 of 4 (permalink) Old 01-07-2019, 10:58 AM - Thread Starter
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Liquid Metal on Asus DirectCU II - GTX 670 Possible ?

Hi guys, I'm planning to use liquid metal / thermal grizzly conductonaut on my old Asus GTX 670 DirectCU II,
but when i remove the heat sink there is a bit of thin space in between the copper pipes so I'm wondering does anybody know it that is made of aluminum or is it nickel?

Red arrow is copper for sure, but the green arrow?
I understand that liquid metal/gallium mustn't come in contact with aluminium..

Any ways of identifying aluminum ?
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post #2 of 4 (permalink) Old 01-07-2019, 11:19 AM
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That usually is aluminium not steel when heatpipes are connected this way. So no LM. Aluminium is fairly soft so if you drill into it or try scrape it it's very easy, it also has very bright color toward white.
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post #3 of 4 (permalink) Old 01-08-2019, 10:02 AM - Thread Starter
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Quote: Originally Posted by JackCY View Post
That usually is aluminium not steel when heatpipes are connected this way. So no LM. Aluminium is fairly soft so if you drill into it or try scrape it it's very easy, it also has very bright color toward white.
hmm yeah I could try that.. and what just crossed my mind, I could try with magnets or drop a bit of LM on the side and see if there is some kind of a reaction
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post #4 of 4 (permalink) Old 01-08-2019, 10:07 AM
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It's aluminum. Not steel. No computer manufacturer uses steel, in any shape or form, for heat sinks. The weight & thermal conductivity is not worth the cost compared to aluminum

The only materials you see on the market are Aluminum or Copper.

Nickel plating is a plating applied to Copper.

Don't do it.

Edit: Product literature

Quote:
DirectCU II with SSU architecture
20% cooler, 3X quieter

ASUS graphics card engineering leads the industry once again with the introduction of DirectCU II SSU thermal design. Comprising two “S” and one “U” shapes, the new heatpipes are precision shaped for optimal efficiency and heat transference. They are also nickel-plated to minimize oxidization, with their mid-section now placed directly over the GPU die. This design shortens heat transfer travel to lower thermal resistance and create bi-directional flow for up to twice the cooling capacity in the same space as that required by existing graphics card cooler designs. High-conductivity copper used in heatpipe formulation creates tube-like vapor chambers, moving heat to a large aluminum heatsink that features extended fins for multiple points of dissipation. The assembly is further chilled by two high performance but carefully-tuned and sound-dampened fans for faster and quieter cooling.
The heatsink, as identified in your photo, is aluminum according to the product literature for Direct CU II. The only Nickel plated components are the heat pipes (as heat pipes are typically made from copper).

Posting this information before you ask if the heatsink is either aluminum or nickel

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Last edited by Slaughtahouse; 01-08-2019 at 10:15 AM.
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