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#1 |
Badcaps Veteran
Join Date: Dec 2005
City & State: Perth Western Australia
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![]() I have just received a used P4 and the vent hole in the top of the case is open allowing atmosphere into the case. I normally see this hole sealed. It occurs to me that if the hole is open then excess pressure based on high temperature has occurred and popped the vent.
I have Googled many different ways to get some enlightenment on this vent but have found nothing of use. Comment or input please.
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#2 |
Badcaps Veteran
Join Date: Mar 2008
Posts: 2,296
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![]() It's merely a hole for letting out gases during curing the sealers during manufacturing.
Sounds like you never seen one with a open hole. Especially brand new CPUs. Don't worry. ![]() Cheers, Wizard |
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#3 |
Badcaps Veteran
Join Date: Dec 2005
City & State: Perth Western Australia
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![]() Thanks. You right I have not seen this hole open before. All others are sealed. I would expect to be sealed whilst not installed to keep out ambient moisture.
So no suspicion of a cause. |
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#4 |
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#5 |
Super Moderator
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![]() since the mobile varients dont even have the heat spreader and have the bare die exposed its nothing to worry about.
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#6 | |
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![]() Quote:
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#7 |
Badcaps Veteran
Join Date: Dec 2005
City & State: Perth Western Australia
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![]() Thanks for all contributions. I have learned something AND the CPU passes all diagnostics.
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#8 |
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![]() Indeed... without the hole, the airspace between the heatspreader and the CPU die would be air-tight. When the processor heated up, I would imagine it would break that seal one way or another, and it might not be the way you want it to
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#9 |
Badcaps Veteran
Join Date: Dec 2005
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![]() True if not mounted. But I would suspect that if mounted with heatsink compound the vent would be sealed.
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#10 |
Badcaps Veteran
Join Date: Mar 2008
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![]() Exactly, the copper heatspeader isn't totally sealed all around on later CPUs as part of improvement manufacturing process and cut down on cost of punching out tiny hole and less use on glue.
http://home.arcor.de/xxmartin/A64/a64_ihs.jpg this is also found on Core 2 Duo (using lipped heatspeader). http://www.techpowerup.com/articles/...cking/intel/37 (fails to view with FF, IE viewable. :P) Cheers, Wizard |
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#11 |
Large Marge
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![]() I just looked at it in firefox.
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#12 |
Badcaps Veteran
Join Date: Dec 2005
City & State: Perth Western Australia
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![]() Thanks Wizard
Those links are a great contribution. Makes facts crystal clear. |
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