Lapped core 2 duo IHS pics

**Spawne32** · 01-31-2007, 08:20 PM

For those of you that have lapped your core 2 duo IHS, could you post some pictures? before during and after maybe so i can get an idea of what to expect when i get mine.

**rick_fx** · 01-31-2007, 08:32 PM

I'll start:

During lapping:

Finished result:

**Spawne32** · 01-31-2007, 08:48 PM

Originally Posted by pH(x)

This isn't a Core 2 Duo, but the prerequisite and practice-lapping run (on a $96 chip) to put in my future 65nm P5W DH DLX system.

I lapped this Dual Core Smithfield 805 and got an 11C decrease in idle temps by doing so.

You can see stock therm compound residue -- highlighting the uneven intel IHS

Lapped in Figure-8 to 800 Grit

Lapped in Figure-8 to 15 Microns

Both cores are stable at 1.3GHz over stock speeds, 44C on air, Arctic Cooling Freezer 7

your pics arent loading unfortunatly..

**pH(x)** · 01-31-2007, 08:52 PM

Originally Posted by Spawne32

your pics arent loading unfortunatly..

Damn www.uploader.ws! Well, fixed, though through a slower host.

And btw I don't believe in using metal polish, makes your processor look pretty, but you are in fact doing harm to your thermal conductivity.

By applying a solvent like Brasso to your processor's IHS -- more chemical molecules are put between your heatsink of choice and the IHS, so by polishing and adding chemicals to the surface you are realistically hurting your heat transfer.

**Voltes5** · 01-31-2007, 08:55 PM

Here is my 6600.

**Spawne32** · 01-31-2007, 09:05 PM

mmmm all these mirror finishes

**rick_fx** · 01-31-2007, 09:25 PM

Originally Posted by pH(x)

I lapped this Dual Core Smithfield 805 and got an 11C decrease in idle temps by doing so.

Same here. Got a 10C decrease in idle temp and 5-6C got load temps on my e6700.

**Shaolin3a** · 01-31-2007, 11:38 PM

These results make gets me tempted to lap mine. Beautiful work guys, always love shiny things!

**IAmATeaf** · 02-01-2007, 02:39 AM

Love the shiney finishes, what makes me wonder though is why don't people like Intel actually ensure that the IHS is flat, after all they are the 1's concerned with heat output and effective cooling. Can't be that hard can it, just need to mill it flat somewhere in their production cycle.

**Dani** · 02-01-2007, 03:56 AM

**qdemn7** · 02-01-2007, 03:58 AM

Originally Posted by Dani

lapped polished

My gawd!!!

How long did it take you to do that?

**HermS** · 02-01-2007, 04:03 AM

Nice work theer Dani

E6600

E4300

Lapping helped the E6600 a lot because it was shaped like a spoon, but the E4300 didn't get any decrease in temps whatsoever.

**GrimReaper** · 02-01-2007, 05:05 AM

Omg dani and herm how did you get that finish?

what kind of paper did you use?

**lasse.j5** · 02-01-2007, 05:14 AM

Here is some pics of my work.

My E6400:

My Scythe Infinity which i polished a bit:

**HermS** · 02-01-2007, 05:24 AM

Originally Posted by GrimReaper

Omg dani and herm how did you get that finish?

what kind of paper did you use?

1200 grit wet'n'dry because it was the finest grade I could find, (1500 or 2000 grit would be ideal) but I put some metal polish on the paper before lapping (figure 8 motion) Afterwards I just used isopropanol to clean out or dissolve any residue the polish left behind and that was that. For the final cut I prefer to use wet'n'dry that is pretty much worn out or at least has had heavy use as it seems to give a more uniform finish. The keyy is to take your time doing it, I spent about an hour or more to get the finish in those screenies, but in all honesty as long as it is 'flat' thats enough.

**natedog420** · 02-01-2007, 05:47 AM

very nice everybody.

**GrimReaper** · 02-01-2007, 05:52 AM

Originally Posted by HermS

1200 grit wet'n'dry because it was the finest grade I could find, (1500 or 2000 grit would be ideal) but I put some metal polish on the paper before lapping (figure 8 motion) Afterwards I just used isopropanol to clean out or dissolve any residue the polish left behind and that was that. For the final cut I prefer to use wet'n'dry that is pretty much worn out or at least has had heavy use as it seems to give a more uniform finish. The keyy is to take your time doing it, I spent about an hour or more to get the finish in those screenies, but in all honesty as long as it is 'flat' thats enough.

very interesting I used a 2500 wet paper on my heatsink and it looks like I just rubbed it on a tar road

**[ IE ] unity** · 02-01-2007, 06:22 AM

Can anyone tell me how this compares to taking off the IHS altogether ? I've a Venice I wanna get working on (just waiting on lanparty nf4 to ship) and I'm wondering which I'd get better temps with: lapping or removing the IHS.

p.s: Nice mirror finishes all!

**phelan1777** · 02-01-2007, 06:24 AM

Originally Posted by [ IE ] unity

Can anyone tell me how this compares to taking off the IHS altogether ? I've a Venice I wanna get working on (just waiting on lanparty nf4 to ship) and I'm wondering which I'd get better temps with: lapping or removing the IHS.

p.s: Nice mirror finishes all!

Remove the IHS :-P. I popped my 170 and both my 8800s.

polishing the lap job with brasso is not a good idea because it leaves a layer on the IHS.

well that is what I have read before numerous times, also it woudl seem that just leaving the IHS bare as your are going to use TIM would be a better idea?

**HermS** · 02-01-2007, 06:27 AM

On AMD chips the IHS's are usually pretty flat in my experience so lapping might not be that beneficial. There are gains to be had from removing the IHS completely, but it's a risky job and the risk outweighs the benefit in my opinion.

**phelan1777** · 02-01-2007, 06:29 AM

Originally Posted by HermS

On AMD chips the IHS's are usually pretty flat in my experience so lapping might not be that beneficial. There are gains to be had from removing the IHS completely, but it's a risky job and the risk outweighs the benefit in my opinion.

Considering folks have been recording high temps on the 8800s anyway, i am glad I popped mine, MOST think I am crazy HA!

**[ IE ] unity** · 02-01-2007, 06:33 AM

Originally Posted by HermS

On AMD chips the IHS's are usually pretty flat in my experience so lapping might not be that beneficial. There are gains to be had from removing the IHS completely, but it's a risky job and the risk outweighs the benefit in my opinion.

Well this CPU was like ~60 euro so no big loss if I do kill it when taking off the IHS

Then again according to this http://www.xtremesystems.org/forums/...d.php?t=132319 S939 chips are becoming rare now maybe I should keep it @ stock as a collector's item to make lots of money selling it

**lasse.j5** · 02-01-2007, 06:38 AM

Originally Posted by phelan1777

Remove the IHS :-P. I popped my 170 and both my 8800s.

polishing the lap job with brasso is not a good idea because it leaves a layer on the IHS.

well that is what I have read before numerous times, also it woudl seem that just leaving the IHS bare as your are going to use TIM would be a better idea?

I polished it with 99% Isopropyl Alchohol aftwerwards, which should remove the layer. Temps has improved alot anyways

**IAmATeaf** · 02-01-2007, 07:50 AM

Some of these lapping pics are awesome. Last HSF I lapped was I think a GlobaWin, my current Theralright 947U is fairly flat but it it makes like 10C diff then I'm definately going to contemplate lapping the IHS and HSF when I move to C2D in a few months time

**Spawne32** · 02-01-2007, 08:53 AM

good god almighty ive never seen such sexy mirror finishes, dani your takin pictures with your processor half way down the block!

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