q6600 lapping what i did wrong?

[amaa]

hi guys, i have recently lapped my q6600. the lapping process took baut 2.5h and i used only 60, 120, 180 sandpaper( this is all u get in dubai) i know i needed 200 and 400. lapping done till i got the nickel out completely from surface, i fitted back the chip and i think i used too much thermal grease(almost finished the hole tube) thermaltake nr2 silverpower or smthing.

The result is not impressive( like i hoped) i only got 2 or 3 Celsius. Most people get almost 10C. Now i am thinking that i have done something wrong.

Did i applied too much thermal grease. An if i did how much should i apply?
Did i finish the lapping process to quickly and i did not lap enough of my chip. And if this is the case then how much lapping is needed.

Thank you in advance.

 

[zerogear]

Your sandpaper was probably not fine enough.

 

[Quiksilver]

What he said. You need to work your way up until you're around 800 grit or higher.

 

[amaa]

then i should order from somewhere online a lapping kit. would that help?

 

[Idontcare]

600 grit minimum for final polish. Recommend going to 800.

Also did you lap your HSF as well? You really need to lap both surface that you intend to match together.

You should be able to get the finer grit paper from any automotive mechanic and/or automobile parts store.

What is your HSF?

 

[amaa]

if by HSF you mean cpu cooler. than no i didn't lapit. i was thinking though. It looks like i have to do it allover again. i have a asus square silent evo.

but ill try the autoshops. im ACE hardware i got only what i mentioned above.

But can anyone tell me how much u can safely lap before you can actually polish one of the cores?

Thks

 

[Drsignguy]

Originally posted by: amaa
hi guys, i have recently lapped my q6600. the lapping process took baut 2.5h and i used only 60, 120, 180 sandpaper( this is all u get in dubai) i know i needed 200 and 400. lapping done till i got the nickel out completely from surface, i fitted back the chip and i think i used too much thermal grease(almost finished the hole tube) thermaltake nr2 silverpower or smthing.

The result is not impressive( like i hoped) i only got 2 or 3 Celsius. Most people get almost 10C. Now i am thinking that i have done something wrong.

Did i applied too much thermal grease. An if i did how much should i apply?
Did i finish the lapping process to quickly and i did not lap enough of my chip. And if this is the case then how much lapping is needed.

Thank you in advance.

A whole tube is NOT recommended. Just a little dab will be good enough, especially if you just lapped.

Originally posted by: Idontcare
600 grit minimum for final polish. Recommend going to 800.

Also did you lap your HSF as well? You really need to lap both surface that you intend to match together.

You should be able to get the finer grit paper from any automotive mechanic and/or automobile parts store.

What is your HSF?

I used 800 and 1000 grit for final on my Q6600. Turned out nice. But IDC's answer is correct, 800 Grit is just fine..

 

[Idontcare]

Originally posted by: amaa
if by HSF you mean cpu cooler. than no i didn't lapit. i was thinking though. It looks like i have to do it allover again. i have a asus square silent evo.

but ill try the autoshops. im ACE hardware i got only what i mentioned above.

But can anyone tell me how much u can safely lap before you can actually polish one of the cores?

Thks

Yes HSF = heatsink w/fan

Yeah ACE isn't going to be the best source, same luck here in the USA if I go to Ace's. I get mine from autoparts store.

Also be wary of the size of the sheets of sandpaper if you order on-line. I got burned on that. http://i272.photobucket.com/al...cket/Bang_for_Buck.jpg

You can polish about 2mm before getting to the cores. There was a link with some photos a while back of someone who did it intentionally and they really had to grind off a LOT of metal before they got down to the chip.

 

[Concillian]

400 grit or so should be enough.

The people claiming something like 10C likely had some serious problems with being concave or convex on the heatspreader. Something like 2-3C is probably around what you should be getting on an average CPU. If you're getting 10C, it means your heatspreader was seriously f***ed up before you started.

Some HSF are very flat already. If you have a nice flat piece of glass, you can put some ketchup (or something else colored with a similar consistency) on your HSF and squish it to the glass. Flip it over and you can see high and low spots. If it's relatively uniform, then don't bother lapping it. If you see the HSF center and lots of ketchup around the edge, or you see the edges and ketchup in the center, then you need to lap your HSF too.

 

[BTRY B 529th FA BN]

Is there a lapping guide here at the Anandtech forums?

 

[Idontcare]

Originally posted by: BTRY B 529th FA BN
Is there a lapping guide here at the Anandtech forums?

Lapping Q6600 IHS
Lapping the Ultra-120 Extreme

From Graysky - http://forums.anandtech.com/me...AR_FORUMVIEWTMP=Linear

 

[Drsignguy]

I remember this thread ( lapping the Q6600 ). Got all my info from it and did my Q6600 the same way.. Worked out great!


BTW, IDC, the quote and pic in your sig is incredibly funny! :laugh:

 

[cmdrdredd]

When I lapped my E6400 I started at 600 then 800 then 1000 then 1500 then 2000. It was like looking at a piece of glass.

 

[OCNewbie]

If Dubai can't make available various types of SANDpaper then I don't know who else can.

 

[Idontcare]

Originally posted by: OCNewbie
If Dubai can't make available various types of SANDpaper then I don't know who else can.

doune irony that SAND is the source material for silicon used in making the wafer too!

 

[amaa]

finally, i got everything needed and finished the job. like i mentioned earlier i had to do it allover again. i got 200,400,600,800,1000,1200 sandpaper from auto shop. after 2h of polish i got a nice finish (though i seen better on above guides) and lapped the HSF as well. my guess if that if u want a proper mirror u need to go up to 2000. The result seems to be good and allowed me to easily take my q6600 from 3.0 to 3.1. After many test i can say i gain a 3 to 4c in temps.

I am glad it worked out well after all and thank you guys for your help.

i have a feeling that all my future chip will have the same fate.

cheers

 

[Idontcare]

Originally posted by: amaa
finally, i got everything needed and finished the job. like i mentioned earlier i had to do it allover again. i got 200,400,600,800,1000,1200 sandpaper from auto shop. after 2h of polish i got a nice finish (though i seen better on above guides) and lapped the HSF as well. my guess if that if u want a proper mirror u need to go up to 2000. The result seems to be good and allowed me to easily take my q6600 from 3.0 to 3.1. After many test i can say i gain a 3 to 4c in temps.

I am glad it worked out well after all and thank you guys for your help.

i have a feeling that all my future chip will have the same fate.

cheers

Congrats! I came to same conclusions as well.

 

[Comdrpopnfresh]

Shoulda finished it off with a coffee filter for that "I see myself in copper-tone" look

 

[arjoreich]

Here's what my Q6600 and TRUE120 looked like before I lapped them (forgot to take a recent "after" picture, sorry)

Q6600 & TRUE120 Before Lapping

Getting that mirror finish is easy!! (If you have no fear of ESD)

Here are my current temps. The room ambient temperature is 23-25C, BTW...
Q6600 @ 3.0Ghz (333FSB x9) @ full load

...the idea isn't to make a quad core run cooler, although it is often the net result, the idea is to make the individual cores run at roughly the same temperatures when under they're all under a full load. (that's with my rig closed too, not an open-air chassis)