Lapping a Processor

i'm posting this here becuase there is no cpu section (how come by the way? or ram for that matter) does anyone lap there procs?

i tried it on a old proccessor but i didn't didn't put the sand paper on a perfectly flat surface so it didn't come out right. also i went from 500 grit to 1000 to 2000. and i didn't do it long enough on the 1000 or 2000 so its not mirror like in finish. here are some pics.

this was about 10-15 minutes of total work. if i had gone with 30 minutes, up 2500 grit, and had a flat surface (glass) then it would come out better.

here is a link if you don't know how/what lapping is. Note that if you do this it voids your warranty.

We used to have CPU and RAM sections but they didn't get enough posts to bother keeping them. You are actually the first person I've seen on this site who has tried lapping. Have you tested it yet?

if you get some nice polish and a polish cloth...you can get a REALLY nice finish on it

can't i don't have a mobo to go with it. also i don't know what it was like before. i got it when i was riding my bike home and i saw a computer being thrown out and i couldn't resist opening it and checking things out. its also the pc i got the harddrive i tried to make a window with. i just wanted to see if it actually works then i would try it on my new pc (once i get it anyway) maybe. but i will definitely do it to the heatsinks and water blocks once i upgrade to water.

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Originally Posted by b4i7

if you get some nice polish and a polish cloth...you can get a REALLY nice finish on it

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i was thinking that too but from what i was told you can/should only have a thermal paste in between the proc and heatsink.

all a polish is, is a SUPER fine sandpaper... it will clean right off then thermal paste your processor

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Originally Posted by Spawn-Inc

i'm posting this here becuase there is no cpu section (how come by the way? or ram for that matter)

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Actually there is. MoBo Mojo covers it if you read the section description.

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Questions, Comments & Discussions about Processors & Motherboards.

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So I'll move it there.

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Originally Posted by b4i7

all a polish is, is a SUPER fine sandpaper... it will clean right off then thermal paste your processor

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oh i thought it was a compound that would fill in the scratches to amke it shiny. i have some that came with a dremal kit i will try it maybe tomorrow.

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Originally Posted by Bucko

Actually there is. MoBo Mojo covers it if you read the section description.

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ahhh... i was looking for cpu not processor.



well i was heading to bed and saw the dremel and couldn't resist it so i got some polish compound and heres the results.

its not perfect mirror finish but close. when i rub the compound off it gets a bit duller. if i were to do this to my used proc i'm not sure if i would want to becuase i'm not sure if this get rid of the flatness all the sanding does. but man it sure does feel smooooooth.

ahhh... its so blindingly shiny! ^_^

That looks 200 times better than before, what kind of polish did you use?

Pretty cool stuff though, lowers it by 2-3 degrees celsius, every lil bit counts to some people.

btw, what processor is that?

Very nice! I lapped both my Blue Orb and my Freezer 7 Pro, and I've been thinking about lapping my processor, but I'm iffy on sanding up something that I spent $370... lol.

Dude, lap the heatsink, not the proc. Messing up your processor is an expensive mistake.

Heatsinks are fairly cheap comparatively. Still, nice job with the finishing compound.

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Originally Posted by SnowFire

what kind of polish did you use?

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not what brand but it came with a dremel kit and its just labeled "polishing compound" the brandname of the kit was called alltrade.

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Originally Posted by SnowFire

btw, what processor is that?

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its a pentium fv80503233 w/ MMx tech 233MHz socket 7

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Originally Posted by .Maleficus.

Very nice! I lapped both my Blue Orb and my Freezer 7 Pro, and I've been thinking about lapping my processor, but I'm iffy on sanding up something that I spent $370... lol.

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ya i wouldn't do it to a new proc i got which is why i did it on this old one. i might try it on a old P4 1.6ghz and see what happens. if it works with that i will probably do it with what proc i get. my only real problem with doing it is voiding the warranty but i will deffently do it to my heatsinks.

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Originally Posted by nil8

Dude, lap the heatsink, not the proc. Messing up your processor is an expensive mistake.

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yes i feel sorry for that E6700 they screwed up by de-headspreading it.

update, sorta. i lapped my celeron!

here are the pictures! i haven't had it long enough to see any results but i figured i show you guys.

i used bing's ketchup idea but used blue printer ink instead.

Before.

http://img171.imageshack.us/img171/9592/10030001gk3.jpg

http://img528.imageshack.us/img528/7476/10030007hm4.jpg

After.
http://img528.imageshack.us/img528/4310/10030008yg8.jpg

http://img115.imageshack.us/img115/990/10030010er0.jpg

i'm not sure what there called but they have to do with the voltage regulation for the cpu. they are black squares with "R50" on them. i saw on a thermal shot on this site they get to 135C, i touched mine and it started to hurt so i decided to make heatsinks. how safe/smart is this? i think the two in the middle are going to lift a little will that hurt it? i think they will still help suck some heat. i used some AS5 to help stick them and there also held in place with a elastic band around two capacitors, there isn't a huge amount of stress on the cap's so will it be fine?

i've since taken the elastic band off and mixed in a bit of super glue and model cement and its sticking so far.

http://img104.imageshack.us/img104/4214/10030015yj0.jpg

I don't see it hurting the capacitors since they can usually handle a bit of abuse (being bent around a couple times)

So what were the results?

those big blocks are either inductors or resistors. the r thing on them tells me they are resistors, but I can see some coils on the inside in my mobo's case.
I wouldn't put a heatsink on one of those, only on transistors. Heat goes away if you apply some airflow on that spot. I use a 120mm fan when overclocking + load 100% (that's when they get too hot to touch), in normal use they are just warm. They need just airflow, as they are more ceramic in nature, not very good at conducting heat.

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Originally Posted by Greco101

I don't see it hurting the capacitors since they can usually handle a bit of abuse (being bent around a couple times)

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i wasn't worried about putting stress on them either but i was told it the heat might melt the elastic band, i doubt it would but it might dry out faster. plus it looks tacky with that there.


i got rid of the elastic band and mixed in a bit of model cement with the AS5 and its held so far.

there inductors dgrmkrp and i run it oc'd all the time. i probably don't need them but they will add a bit more life to them and the capacitors around them. i also added a fan as i noticed there is a 3 pin plugin.

overall i've dropped temps 3*C or more degrees during load. its not a whole bunch but i already voided the warranty by upping the voltage and it only took 15 minutes to lap it.

here are some new photo's

just a question, would lapping work on amd x2 processors? im sure it will, but i have only seen intels being used.

If it has a integrated heat spreader, then you can lap it.

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Originally Posted by crenn

If it has a integrated heat spreader, then you can lap it.

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guess that makes sense :glasses:

yup like crenn said as long as it has the ihs. i'm not 100%, but pretty sure there is copper under there.