CPU lapping guide

Logic Zero · 15 Jan 2007 at 17:43

Wow, really doesnt look that hard to do :confused:

Might give it a go myself next weekend!

Mr_T · 15 Jan 2007 at 18:58

No objections from me, feel free to sticky.

Proc · 15 Jan 2007 at 19:15

Nice one Mr.T, good guide. Gives the people who haven't done lapping a good idea of what to do, if it's being made a sticky could be a good idea for people that have done lapping a few times to add some of their tips as well.

joeyjojo · 15 Jan 2007 at 19:21

Take a photo of the IHS first, can't get that information back :rolleyes:

weescott · 15 Jan 2007 at 19:26

Added to the sticky. If people have anything to add (like I have) then post here and I will edit.

Minstadave · 15 Jan 2007 at 20:55

weescott said:
Added to the sticky. If people have anything to add (like I have) then post here and I will edit.

Ooops forgot you didn't need my help for that, just ignore me, nothing to see here

weescott · 15 Jan 2007 at 21:12

Minstadave said:
Ooops forgot you didn't need my help for that, just ignore me, nothing to see here

I was going to add you to messenger but I'm using a Linux distro ATM and couldn't figure out how to add people to my contacts so asked Jokester to change the thread title, sooo errr.....can you add me to messenger?

Minstadave · 15 Jan 2007 at 21:16

weescott said:
I was going to add you to messenger but I'm using a Linux distro ATM and couldn't figure out how to add people to my contacts so asked Jokester to change the thread title, sooo errr.....can you add me to messenger?

Will do

Hen_Dawg · 15 Jan 2007 at 21:24

joeyjojo said:
Take a photo of the IHS first, can't get that information back

Very good point

Solari · 16 Jan 2007 at 15:29

Sticky please?

Legend · 16 Jan 2007 at 15:39

Does lapping affect the lifespan of your CPU negatively? Or would it in fact prolong it, given that it allows (ideally) for cooler temps??

:confused:

Mr_T · 16 Jan 2007 at 15:47

If you do it right there is no reason why it would effect the lifespan of the cpu. If anything as you say keeping the chip cooler can only be positive.

Overclocking your cpu is more likely to shorten you cpu lifespan as your pushing the limits of the technology.

Marci · 16 Jan 2007 at 16:05

To check the final flatness, hold the CPU (or waterblock etc) at 90 degrees to your monitor whilst displaying this file, with the edge of the IHS on the center line. The reflected lines should continue smoothly with no wobbles or distortions: http://www.thermochill.com/guides/LappingGrid.pdf (zoom it in a bit too)

A mirror finish is NOT required to get it to reflect. Even a rough block will reflect the image on the monitor at the correct angle.

And reference this thread: http://www.ocforums.com/showthread.php?t=329453&page=3&highlight=lapping+grid

Examples...

1) NOT flat - http://www.employees.org/~slf/flat/grid1.jpg
2) Flat - http://www.employees.org/~slf/flat/grid2.jpg

weescott · 16 Jan 2007 at 16:44

Solari said:
Sticky please?

weescott said:
Added to the sticky. If people have anything to add (like I have) then post here and I will edit.

Marci, Cathar posted the same thing here a couple of years ago. I didn't fall for his trick!

I'll add in the info.

Logic Zero · 16 Jan 2007 at 17:37

Marci said:
To check the final flatness, hold the CPU (or waterblock etc) at 90 degrees to your monitor whilst displaying this file, with the edge of the IHS on the center line. The reflected lines should continue smoothly with no wobbles or distortions: http://www.thermochill.com/guides/LappingGrid.pdf (zoom it in a bit too)

A mirror finish is NOT required to get it to reflect. Even a rough block will reflect the image on the monitor at the correct angle.

And reference this thread: http://www.ocforums.com/showthread.php?t=329453&page=3&highlight=lapping+grid

Examples...

1) NOT flat - http://www.employees.org/~slf/flat/grid1.jpg
2) Flat - http://www.employees.org/~slf/flat/grid2.jpg

Wow, pretty clever (or maybe im just thick lol), thanks, will give it a go soon, ill get some pics for you guys too!

CarlD · 16 Jan 2007 at 18:00

I only have 400 , 600 , 100 , 1200 sandpaper... will it be ok if i skip the 800?

Mr_T · 16 Jan 2007 at 19:35

CarlD said:
I only have 400 , 600 , 100 , 1200 sandpaper... will it be ok if i skip the 800?

Yeah should be fine, do most of the work @ 600 and get to as much copper as I did on my 800 photo. Then go straight to 1000 & 1200.

Good Luck!

CarlD · 17 Jan 2007 at 15:29

Well lapped the cpu and my titan amanda and temps have dropped by 10-12degrees

PinkFloyd · 25 Jan 2007 at 00:17

Looks like something I may do, not really happy with the temps I get at the moment, will atleast check the contact when I take the chip out!

lay-z-boy · 25 Jan 2007 at 00:34

I had a bash at lapping a few months back, was rather fun

Lookin' guuuud.

Took off 9c at load and 4-5c idle