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[TPU] Ivy Bridge Temperatures Could Be Linked To TIM Inside Integrated Heatspreader: Report  

post #1 of 387
Thread Starter 
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Quote:
PC enthusiasts with Ivy Bridge engineering samples, and reviewers at large have come to the consensus that Ivy Bridge is a slightly warmer chip than it should be. An investigation by Overclockers.com revealed a possible contributing factor to that. Upon carefully removing the integrated heatspreader (IHS) of an Ivy Bridge Core processor (that steel plate on top of the processor which makes contact with the cooler), the investigator found common thermal paste between the CPU die and the IHS, and along the sides of the die.

In comparison, Intel used flux-less solder to bind the IHS to the core on previous-generation Sandy Bridge Core processors. Attempting to remove IHS off a chip with flux-less solder won't end well, as it could rip the die off the package. On the other hand, the idea behind use of flux-less solder in CPU packages is to improve heat transfer between the die and the IHS. Using thermal paste to do the job results in slightly inferior heat transfer, but removing IHS is safer. One can be sure that making it safe for IHS removal couldn't have been the issue behind switching back to conventional thermal paste, as everything under the IHS isn't user-serviceable anyway, and off limits for them.
274
If true, then i see new revisions of the cpu or recall maybe? But oc isnt warranted, so at stock its still within intel's spec. Maybe someone will remove the HS and see if temps differ by a large margin.
Original Source
Quote from original source:
Quote:
So based on what evidence we could find from our own investigation, as well as what experience has taught us, Ivy Bridge is running hot when overclocked because of TIM paste between the IHS compared to solder attach used on Sandy Bridge. Why Intel made this choice we aren’t yet sure. We also aren’t sure if they will continue using TIM paste on the Ivy Bridge line, or if this will only be seen on the Engineering Samples like the units sent out for review. However, we’ve put word out again to Intel and are waiting to hear back if they have any further insight or comment to offer. If nothing else, we can hope their reply will again be in good humor… “Secret Sauce” did give us a laugh!

Edited by MoBeeJ - 4/25/12 at 2:44pm
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post #2 of 387
interesting.. now we need a custom BIG ASS cooler like the PHANTEKS, NOCTUA or SA for that cpu without the integrated heatspreader and see the results.. biggrin.gif

or a custom waterblock?!?! rolleyes.gif
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post #3 of 387
So Intel used regular thermal paste so the IHS is safer to remove? Don't see why they did that. Just curious, how many users here actually remove the IHS for performance-related reasons?
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post #4 of 387
Quote:
Originally Posted by AbdullahG View Post

So Intel used regular thermal paste so the IHS is safer to remove? Don't see why they did that. Just curious, how many users here actually remove the IHS for performance-related reasons?

Not sure if serious... Real overclockers take that crap of anyways and put the cooler right smack down where it matters. biggrin.gifrolleyes.gif
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post #5 of 387
Thread Starter 
I have a siring of liquid metal ultra biggrin.gif. If anyone would provide me a cpu/board/ram i will be happy to try and remove the ihs and flow some liquid metal inside biggrin.gif.

P.S. If your seriously considering this offer, know that i will void your warranty biggrin.gif

But anyways, this is the first time i see a ihs removal and the paste is white. Its usually metallic or something.
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post #6 of 387
The white Thermal compound is probably ceramic based paste, which is low quality and cheap.
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post #7 of 387
Quote:
In comparison, Intel used flux-less solder to bind the IHS to the core on previous-generation Sandy Bridge Core processors.

That doesn't make sense to me, I could see soldering the IHS to the substrate the chip is mounted to, but how do you solder the IC case to metal?

Maybe they used a hardening TIM before?
post #8 of 387
So I guess if people just take off the IHS and run the cooler straight on the die it could help?... or crush the die?...
post #9 of 387
Intel had to have some positive reason for doing this, other than save money..... rolleyes.gif
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post #10 of 387
They should try putting the "best" TIM on the IHS and see if that makes a difference tongue.gif But after reading this and Intel not going to do anything about it, I might not get the 3570k now :/
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Overclock.net › Forums › Industry News › Rumors and Unconfirmed Articles › [TPU] Ivy Bridge Temperatures Could Be Linked To TIM Inside Integrated Heatspreader: Report