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Lapping off 2.5mm (2600k) - Page 4  

post #31 of 164
Thread Starter 
I'd suggest I'll make a thread when the pictures are up. Basically it was about if its good or bad do stay tuned. I'll be back later with pics
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post #32 of 164
Quote:
Originally Posted by ChickenInferno View Post
I see you've never lapped your CPU....The temperature difference from the nickel to the copper as well as the temperature drop of removing the unevenness in the IHS can drop temps as much as 9°C on air cooling. That is a big drop, but some CPU's have proven to be extremely uneven. By lapping the heatsink as well (copper copper mating), temps will fall even more. Lapping both surfaces on average drops temps about 10°C (assuming they were not already perfectly flat as most aren't).



This is actually quite unnerving. 2.5mm may be too much but we won't know until we see it/test it. What you may be forced to do is to completely remove the IHS.
2.5mm does sound like a lot, but as long as it isn't right into the die it should be OK, hopefully it didn't get too hot with the machine planing it off, was it burning hot right after finishing?
9° - 10°C difference due to lapping is a pretty extreme case. IHS must be pretty horrible for that kinda temp difference. I think 2° - 3°C difference is probably more average. My 920 c0 was a bit concave so spent much time lapping that & the TRUE, it wasn't worthwhile for the temp difference I got, lotsa work & voided warranty for very small gain.
Hopefully it works out well for you OP, good luck & can't wait to see the pics of the extreme lap job!
    
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post #33 of 164
on custom water loop you should be fine, infact even better temps. On fan cooler 2.5mm too much and lack connection
post #34 of 164
The thickness of IHS according to intel whitepapers varies between 1.8 and 2.1 mm, from core 2 duo through core i7's, I doubt 2600 would be any different, and I am too lazy to look. The die attach solder can have a silver color to it if you really went that far, hopefully a little less.

just for curiosity, yep same thickness, core 2 i7s ie 2600 same thickness IHS, page 128, F2-F4 + ~50 microns.
Edited by opt33 - 4/29/11 at 5:15pm
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post #35 of 164
Thread Starter 
Quote:
Originally Posted by opt33 View Post
The thickness of IHS according to intel whitepapers varies between 1.8 and 2.1 mm, from core 2 duo through core i7's, I doubt 2600 would be any different, and I am too lazy to look. The die attach solder can have a silver color to it if you really went that far, hopefully a little less.
Basically that means it could snap at any given point. We did not just randomly pick 2.5. We took measures. I'm not THAT crazy. The machine itself has a minimal tolerance of how much in 0.x mm it can miss. 0.0010-0.0015. Basically its industrial expensive toys. Sort of like our CRC-toy rarely ever use it though. Unless someone wants a cool Playboy keyring?

Anyways, gotta continue. Im curious if its dead or not...
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post #36 of 164
Quote:
Originally Posted by XrOo View Post
Basically that means it could snap at any given point. We did not just randomly pick 2.5. We took measures. I'm not THAT crazy. The machine itself has a minimal tolerance of how much in 0.x mm it can miss. 0.0010-0.0015. Basically its industrial expensive toys. Sort of like our CRC-toy rarely ever use it though. Unless someone wants a cool Playboy keyring?

Anyways, gotta continue. Im curious if its dead or not...
We are waiting in slight suspense....
    
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post #37 of 164
Quote:
Originally Posted by iZZ View Post
God why do people insist in lapping their cpu's? It's a bit exagerated but here it is.

http://hubpages.com/hub/How-to-destr...-by-lapping-it

But to be honest, 2,5 mm DOES seem like a lot of IHS.

Post some pics.
they spelt Quran wrong -_-
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post #38 of 164
Thread Starter 
I really hope and big that the silver stuff you mentioned is My saving. :O and if so, the isf IS gone

All the wiring is done. Now to the H70 pump. Before I continue. What could happen if i push pressure on to what you say is the actual soldering? ;(
Edited by XrOo - 4/29/11 at 5:28pm
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post #39 of 164
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post #40 of 164
Thread Starter 
Cant I just add a VERY thin coating of lets say silicon on it? Or dies it get too hot? Silicon handles high temps well
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