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Copper Intel CPU's?
- Thread starter Saeid
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Flak Monkey
Gawd
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Cost is a factor. Not to mention 90% of the people who buy intel chips dont even know what a heatsink is anyways.
http://www.kitcometals.com/
Copper $1.67 per pound, Alumimum $0.80 per pound.
Copper is a little over twice as expensive.
Copper $1.67 per pound, Alumimum $0.80 per pound.
Copper is a little over twice as expensive.
pxc said:They already are.
The integrated heat spreader (IHS) is copper with a nickel coating. Many people have lapped the IHS down to the copper if you look around. It's a pretty thin nickel layer.
I think they've been this way since the first Northwoods. I'm not sure about Willamettes.
Even before that.acascianelli said:
The older Slot1/S370 Celerons and P2/P3 CPUs with heatspreaders also used nickel plated copper slugs, coppermine CPUs went to a bare core, then after the P4 came out Tulatin P3s and Celerons brought it back to S370.thanks for that answer, now the follow-up question: Why nickel plate them? Doesn't that adversely affect the performance? Or does Intel not care? Or is it to prevent oxidation?pxc said:They already are.
The integrated heat spreader (IHS) is copper with a nickel coating. Many people have lapped the IHS down to the copper if you look around. It's a pretty thin nickel layer.
chrisf6969
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drizzt81 said:
as PXC said they are already copper. Have been since P4.
Nickle protects from oxidation, corrosion and possibly interaction with HS pastes.
Copper tends to oxidize and turn green, etc... The thin nickle layer is much better than having the copper interact with HS paste and turn green etc..
Megadeth_Guy01
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It'd be alot nicer if Intel plated them like Thermalright heatsinks. Would probably be alot smoother/flatter (sp?).
Susquehannock
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chrisf6969 said:
Nice one.
Exactly. Aluminum is an active metal & will corrode when galvanic conditions exist with the other metals, especially with Copper or Copper/Nickel.xonik said:
No thanx. I have far better uses for my Gold than to coat a CPU.ZenOps said:
And I don't think I would call Gold "completely non-reactive". True it is far less reactive than most metals, but it is not totally inert.
Are you working in a vacuum? Or a room with a desiccated atmosphere? If not then moisture (humidity), with all it's various chemical compounds, can and will make it's way onto the surface.krotch said:
BTW ... that charactristic green color you see on Copper is mostly a reaction with Sulphur in the atmosphere. Or from oils and/or salts from your skin etc. Pure Copper Oxide has a dark purplish appearance.
I'm sorry, but moisture isn't that big of an issue, until you start working with extreme cooling. If it were, we'd have a lot of busted computers. All those aluminium on copper parts that ppl decide to slap together.
Like my copper and aluminium waterblocks.
Like my copper and aluminium waterblocks.
Susquehannock
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You are right. I was only trying to explian that moisture (& other airborne contaminates) are in
the air unless you work in special conditions.
Not sure what you are saying about your Copper & Aliminum blocks.
But I will say there are numerous posts in the water cooling forums how combining Cu and Al
in a water loop can cause galvanic corrosion over time.
the air unless you work in special conditions.
Not sure what you are saying about your Copper & Aliminum blocks.
But I will say there are numerous posts in the water cooling forums how combining Cu and Al
in a water loop can cause galvanic corrosion over time.
chrisf6969
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"Galvanic corrosion"..... couldn't think of the word of the top of my head before.
I knew what it was... anyway, I think enough people have pointed out why a pure copper heatspreader would be a bad idea.
Even though the OP was wonder why they didn't use copper, which they do... its just coated with a nickle. Recap & End of thread.
I knew what it was... anyway, I think enough people have pointed out why a pure copper heatspreader would be a bad idea.
Even though the OP was wonder why they didn't use copper, which they do... its just coated with a nickle. Recap & End of thread.
robberbaron
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Jodiuh said:
The sexiest P4 I ever did see.
There's reasons why they use nickel, that I won't care to expand on.
The reason other materials are not plated onto the copper is rather simple, cost.
You could do tin, or silver, or gold, or whatever, its not an issue of application, as much as it is cost.
The reason other materials are not plated onto the copper is rather simple, cost.
You could do tin, or silver, or gold, or whatever, its not an issue of application, as much as it is cost.
Megadeth_Guy01
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Ah hah, so they are coated like Thermalright heatsinks. It just doesnt look as shiney lol.
ZenOps said:
Copper is better than Gold, Silver is best of all metals: http://www.frostytech.com/articleview.cfm?articleID=233 (diamond is actually best, but how do you make anything from it?)
==>Lazn
Copper is a wonderful conductor also. Dosen't take much to short something out. You need to keep it in a controlled environment. Copper heatsinks usually don't fall apart, so the cap on the processor keeps the processor safe from any stray copper. Gold is a really good conductor, but they don't have to use it because they can deal with the heat on air right now without having to do that type of stuff. Last time I checked, AMD does nothing to their chips. Just the back of the silicon straight to the heat sink. Feel free to correct me on that one.
Correction: See notes below from pstang. Thanks for the clairifacation.
Correction: See notes below from pstang. Thanks for the clairifacation.
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ZenOps said:
XP-90G, XP-90S(ilver), and XP-90D(iamond)
http://hypertextbook.com/physics/thermal/conduction/
Copper is quite good, but the downside is that it is reactive to normal air and other metals. Eventually it tarnishes. Same thing with pure silver, eventually it oxidizes, greatly decreasing its effectiveness.
Nickel is only 90.7 W/mK but it is more or less non-reactive with air or anything you could throw at it in a normal environment.
Diamond and graphites have an annoying habit of being some of the hardest substances Which makes it either like sandpaper or something that will not conform to the other mating surface. That and its a wee bit more expensive than gold.
I think a reasonable upgrade would be a copper underlay with dozen micron thick gold overcoat instead of the copper underlay with nickel overcoat as is now. It might even reduce the need for thermal pastes as pure gold is really squishy < Squishy of course being a scientific term because noone knows what malleable means, rofl.
Copper is quite good, but the downside is that it is reactive to normal air and other metals. Eventually it tarnishes. Same thing with pure silver, eventually it oxidizes, greatly decreasing its effectiveness.
Nickel is only 90.7 W/mK but it is more or less non-reactive with air or anything you could throw at it in a normal environment.
Diamond and graphites have an annoying habit of being some of the hardest substances
Which makes it either like sandpaper or something that will not conform to the other mating surface. That and its a wee bit more expensive than gold.I think a reasonable upgrade would be a copper underlay with dozen micron thick gold overcoat instead of the copper underlay with nickel overcoat as is now. It might even reduce the need for thermal pastes as pure gold is really squishy < Squishy of course being a scientific term because noone knows what malleable means, rofl.
ICE_9 said:
i will correct you
aside from the mobile and dtr A64's... all A64's come with an IHS... take a look: http://www.newegg.com/Product/ShowI...ocket 754 Processor Model ADA3700AEP5AR - OEM
With gold being "squishy", wouldn't it make it more prone to damage from the heatsink, thus exposing the copper to the air? I haven't seen a IHS ever have a scratch that went all the way through to the copper (non-lapped). Gold seems to be a good idea, but might affect the warranty period for the product.
Yup, it would definitely make it more susceptable to scratches.
But then again, with the Socket 775 rated for only about 20 installs and removals because of the scracthes on the gold pads underneath the processor I don't think it would make a difference.
But then again, with the Socket 775 rated for only about 20 installs and removals because of the scracthes on the gold pads underneath the processor I don't think it would make a difference.