Would soldering the IHS work?

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gMemo92

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Would soldering the IHS on to the Heatsink work? I have some leaded solder paste (i think the melting point is 185c)

Would there be any drop in CPU and GPU temperatures?

So the way i'm planning on doing this is putting some solder paste (good amount) on the heatsink then i would put the IHS and then with a heat gun just heat the heatsink + heatspreader up to 190c.

Then i would just add some mx4 thermal paste on the chips.

Has anyone ever done this? I would think it would diffidently see some temperature drops right?

so it would be like

---- die
---- paste
------ ihs
oooo solder
------ heatsink
 
Remove the IHS Thermal Paste, and try it that way, although I am not sure the Console can resist the IHS without any paste, it might create a isolated Heatspreader, with no heat pass through.

A Custom Heatsink Design would be needed to accommodate the Chips cooling, a single block of aluminium with Cooper Squares for the Dies, pretty much like thoes old Intel Heatsinks from the Core 2 Duo Era.

Even if you'll want to solder the IHS into the Heatsink itself, it would make matters even worse, are you have a thick chunk of metal, with no heat dissipation whatsoever, since there is no thermals in between, i am not sure if that's the best idea,but it could work, can't prove it doesnt work, without any actual proof now is it?

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I highly doubt it would benefit in any way but if u do this it doesn't become a serviceable part. the thermal paste between IHS and the heat sink is used only to fill any imperfections between the 2 surfaces and thats it. If u solder, u dont have any of these met or any way of knowing u have met these standards so the heat transfer will change if both surfaces cant transfer the heat properly. Not only that u may find u will struggle to line up the IHS once soldered to the heat sink and then with the 2 BGA chips.

Ideally if u were going to achieve this u need the heat sink and the IHS to be made as one piece. But the IHS is actually used when attaching the BGA to the mother board to keep the BGA flat as well when its soldered onto the mother board. If u dont do this especially when re-balling u will find the BGA wont sit properly on the mother board, especially the CPU as its BGA is much thinner. so there is actually reasons these are made in several parts and not as one.
 
gMemo92 said:
No i'm not gonna solder the chip to the ihs only the ihs to the heatsink.
Click to expand...
I don't know what are thermal conduct specifications for solder. This can be very good, very bad, or similar to thermal paste. You need to search for that kind of info by yourself.
If you want to do something like that i rather suggest coollaboratory liquid pro, i can confirm that difference is noticeable, on pc..
 
well according to der8auer (the person who is famous on PC space for extreme overclocking) its a very bad idea, if you wanna know why, just watch this video at the near end of the video, he tells that its basically not worth doing it (given that the material you needed is baiscally out of reach to regular humans like us) and probably make the thermal performance much worse that using a conventional thermal compound.
 
No one can stop you but you're going to notice zero difference in your temps. If you're really going to go to all that effort you may as well just completely remove the IHS and slowly sand down the heat sink so it makes direct contact with the die. Direct die cooling is the most efficient but the least safe as it removes all the protection the IHS provides.
---heatsink---
---thermal paste---
---CELL/RSX---
If you want the most efficient thermal paste between the IHS and the CELL/RSX use liquid metal like thermal grizzly conductonaut, you can't use it on the heatsink because it will destroy the aluminum but the IHS is fine.
---heatsink---
---thermal paste---
---IHS---
---liquid metal---
---CELL/RSX---
 
DoublesAdvocate said:
If you want the most efficient thermal paste between the IHS and the CELL/RSX use liquid metal like thermal grizzly conductonaut, you can't use it on the heatsink because it will destroy the aluminum but the IHS is fine.
Click to expand...
Why is IHS fine with liquid metal?
 
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