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  #31  
Old 04-19-2017
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Default Re: Kaby IHS

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Originally Posted by bartx View Post
According to some reports and my knowledge I think that quality of standard IHS may vary - remember that it's a mass production, so they have some tolerance range in dimmensions, flatness and surface roughness.

Not to mention, that spare IHS will for sure help keep all the markings on original IHS intact
I checked a few retail IHS. I found that depth of pocket on bottom varies from .28-.38mm and flatness varies up too .05mm.
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  #32  
Old 04-19-2017
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Default Re: Kaby IHS

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I checked a few retail IHS. I found that depth of pocket on bottom varies from .28-.38mm and flatness varies up too .05mm.
Exactly, thanks for that info. In my opinion IHS are stamped from huge copper sheet, just looking how the edges look like. It should be the cheapest process. Probably couple companies make them all the time, as long as they pass quality control and assumed tolerances it's all good.
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Last edited by bartx; 04-19-2017 at 13:29.
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  #33  
Old 04-19-2017
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Default Re: Kaby IHS

I believe the IHS are die-cast. If you look around the outside bottom edge some have slight "flashing" which would be from the parting line of the die-cast mold.
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  #34  
Old 04-19-2017
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Default Re: Kaby IHS

In case of casting, they should have some marks from ejector pins and mark in the place, where metal is injected. Like injection moulded parts. I'm not 100% sure, I was designing plastic automotive parts for some time, but never any die casted metal parts.
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Old 04-19-2017
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Default Re: Kaby IHS

Good points, they could have stripper plate ejection so no pins but yea the gate location would be visible. You are probably correct, they are stamped/forged instead of die-cast.
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  #36  
Old 04-19-2017
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Default Re: Kaby IHS

how about the quality of the metal of the stock IHS could it be a cheaper alloy
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Old 04-24-2017
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Default Re: Kaby IHS

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how about the quality of the metal of the stock IHS could it be a cheaper alloy
if i have an original ihs, i could analyze the alloy at work and compare it to bartek´s alloy :P
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  #38  
Old 04-26-2017
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Default Re: Kaby IHS

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if i have an original ihs, i could analyze the alloy at work and compare it to bartek´s alloy :P
I would be super interested in that
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  #39  
Old 04-26-2017
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Default Re: Kaby IHS

Me too I use Cu ETP, 99,9% pure copper. There is purer alloy CuOF (99,95%), but it's for sure more expensive and I'm almost sure that Intel won't use it in mass production due to price.
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  #40  
Old 04-26-2017
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Default Re: Kaby IHS

Stock Intel IHS
wiLLius`s Cinebench - R15 score: 721 cb with a Core i3 7350K



Bartx IHS
wiLLius`s Cinebench - R15 score: 728 cb with a Core i3 7350K

Gained 50~ MHz with Bartx IHS. But I'm too inexperienced to know if it's the IHS or my mounting skills.
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