lapping the processor???

Prosnow23

I know that lapping the hsf will give overall better temps, but can u also lapp the top of the processor, the part that u apply thermal paste to??

Dreamreality

yep (5th letter here)

Prosnow23

so it wont hurt it or anything...lol
has anyone here done it?? heard of anyopne doing it??

Dreamreality

yea it wont hurt it just be careful

there are some guides on the net if u google it i'm sure u'll find a few.

Kingsfan

you could also lap your GPU and Northbridge

TimberWolf

I'll have to play Devil's Advocate here and say that lapping the heat spreader on a P4 is pretty much a waste of time; And the smaller cores of the current generation AMD procs make it very difficult for a beginner (ie: you never lapped anything before) to achieve a flat and true surface by hand on their first try.

Most of the Web "guides" I've seen are pure ego-driven crap, justified with marginal results: Far more concerned with obtaining a useless mirror finish than a genuinely flat mating surface for the HSF.

Using a quality HSF and premium thermal interface compound is the best choice - and devote your modz time to ensuring good case airflow. Lapping isn't some "Black Art", but it takes a fair amount of time and practice (with an experienced mentor) to do it well - and sanding through the core of your new Barton CPU is an expensive lesson.

By way of background, I've spent over 20 years as an automotive / motorcycle machinist specializing in high performance engine building and custom fabrication; and another 10 years as a licensed gunsmith. Since lapping is sometimes necessary for either profession, but very labor intensive, a significant part of the judgement you develop along with the skill is determining when it's an absolute waste of time for minimal gain.

da31fox

I would say don't lapp (sand) your cpu. The heatsink yes that fine. Its easy enough to do and lower your temps a few Celcius. I did mine with a 5.00 shipped kit from www.easypckits.com so if your heatsink isn't a thermalright or doesn't feel smooth by running your finernail across it or has machineing marks (scratches) on it they I say do it. I know with mine I had that cheap crap amd gives you stuck on my hs and I couldn't get it all off with alocohl(sp) but the 400 grit took it right off.

mikejr83

I lapped the HSF that came with my retail AMD just for sh*ts and giggles. I was actually supprised since it didn't run as hot as I expected (since I've always seen AMD run a little higher than Intels). I was even able to get a small (nothing notable, XP2200@1.8 to 2GHz 1.7) clock out of it with a very small incresase in temp.

Mike

ZachM

Don't lap your CPU core. You can do it on like old K6s and whatnot, but new processors are so fragile that you run a really high risk of killing it. I doubt you would get much improvement at all lapping it. Without the best tools and quite a bit of experience you would probably actually make the CPU surface worse because it is so small.

liaisonextreme

I am going to lap my P4. After applying thermal paste to a few I've noticed they have a valley in the middle and sometimes the ends have a ridge or a high spot. When mounting a heatsink you can see where the surface isn't flush. My new water block has a special mirror finish, so I am going to gentley lap my P4 to get those high spots down and then I will place the water block on. I cant see how it would hurt. I have also considered lapping the GPU and the NB. I will have to get a good look at it and see if it is worth the trouble. I'll keep you psted.

Darkeagle

You can, but what if you lap it crooked (not level)? You may have a nice surface, but even if you don't ruin yout chip your kinda screwed.

Just lap the HS and don't worry about whatever you put it on.

l33t

Yea that's what I basically say: stay away from lapping the actual chip.

Paladindjinn

unless your a bazillionare who wants 1 squeeze every last drop of performance outta their comp.

Darkeagle

If thats the case you could have a tool and die maker do it for you, and then fire him and ruin his life if he ****ed up your chip, which you would then go out and buy another of to go in your custom one of a kind OCed terabyte system you bought slightly used from NASA.

AZNmodder

intels heatplate should be fine and u can lap that....make sure u use a sanding block so u can lap flat and not messed up

glassjaw

i have a question. say your a poor modder. say i want to only buy one specific grit for lapping my hs. which grit would i need for the best lap?

Ruthless Brad

LOL, buy the 2500 grit paper and sand for about one week straight!

chillendude123

Dude its ur processore......if i were u i wouldnt touch teh cpu unless ur ocing

Darkeagle

Yeah. Do that if you want a good lap and don't mind going through a crapload of paper.

It all depends on how well your HS is before you start.

ZachM

Well I don't know if lapping a P4 heatspreader will do anything but I have a few things to say. First you don't want to bend the pins. Holding the processor without bending the pins and lapping it will be hard. You definately don't want to wet sand which makes it quite a bit harder. The surface you're lapping tends to catch easier when not wet sanding. Make sure you clean all of the shavings off your processor afterwards.

GlassJaw, go to a hardware store that carries individule sheets of sandpaper. Two or three sheets of 600 and 800 should work.