Lapped core 2 duo IHS pics

[Contero]

Lapping is still the only situation where is see people throw out arbitrary temp changes and no one asks for proof and just takes their word.

Some guys just says "lapped my 6300, temps are down 60 degrees. Im stable at 4.6ghz now with a tuniq." and everybody is mesmerized by his shiny cpu. I do believe that there are some slight gains if your using air cooling but for anything more is a waste of time and pain on the hands.

So you're debunking someone else's unsupported claim by making unsupported claims of your own? Good job.

If it's a waste of time or getting a 10 degree difference is impossible, post up some evidence to support it. Don't say "You're all full of it" then expect anyone to take you seriously.

[falqon]

If it's a waste of time or getting a 10 degree difference is impossible, post up some evidence to support it. Don't say "You're all full of it" then expect anyone to take you seriously.

How would he post up evidence if he knows it's stupid? No sense in screwing a c2d just to prove that people are infatuated wtih shiney things.

You're making a simple logical mistake. If I say the moon is made of cheese, it's not your job to disprove that theory, it's my assertation, so the burden of proof falls on me. Everything I've found on lapping even remotely scientific suggests waste of time and warranty, your theory of helping will be questioned until it's actually proven. This is simple critical thinking.

I for one don't believe that intel makes a chip out of the 65nm process that is so complex and the tolerences are so tight that few people on this board can even comprehend it and then turns around and slaps a piece of garbage heat spreader on it. That's like buying a porsche and then re-painting it.

[pois0n]

I for one don't believe that intel makes a chip out of the 65nm process that is so complex and the tolerences are so tight that few people on this board can even comprehend it and then turns around and slaps a piece of garbage heat spreader on it. That's like buying a porsche and then re-painting it.

Well it isn't scientific, but all the people in this thread that've lapped their C2D's have experienced at least SOME temperature drop. Whether it be a negligible drop or a drastic drop, there was a drop. You're free to believe that they don't put on a garbage heat spreader, it's NOT top quality, it's there just to do the job and make sure the CPU stays under Intel's 60.1°C (I think?) recommended limit with the stock HSF. All of which do, however, they can be flattened even more, and as you'd expect the temp will drop more.

Anywho, my experience so far with lapping indicates that there's no reason not to (after you've tested the cpu is working, for warranty reasons), 5°C drop in temps is worth it for the 30 - 40mins of work it takes.

[phelan1777]

Yes there is the Bling of polishing the IHS.

Yes there is the flattening of the surface to allow for a better mating of IHS, TIM and cooling block water/or other method.

Also with this there is the lessening of material even to a minor degree that the heat has to pass through. Which to me, makes sense as less resistance. Now yes if you get a 1-4 degree drop that is not significant, though if you get 5-10 degree or more, then it was worth.

But think about this, the more lapping (Not for bling) but for removing IHS material, and allowing for a unified mate vs (concave IHS) then the work is worth it.

Has someone grinded down the IHS to the chip itself?

Especially since the newer cores are soldered on.

[AndyM]

I for one don't believe that intel makes a chip out of the 65nm process that is so complex and the tolerences are so tight that few people on this board can even comprehend it and then turns around and slaps a piece of garbage heat spreader on it. That's like buying a porsche and then re-painting it.

If you look at the photo I put up a few pages back of my post-lapping cpu mounted on the board, you can see just what a crappy IHS there are on these. I didnt go full down & even on the lapping, so you can see areas where there is still some nickle on the IHS. I was mainly concerned with getting the middle of the IHS, where the core is hiding behind, flat and actually able to make contact with a heat sink (with no high spots on the IHS preventing this). Even with this 'lazy' lapping job only going to a worn out 320 grit finish, I lost 5-6C under Orthos at stock voltages, 10C under Orthos upping voltage to 1.3875 to go faster. My cooling tower also was not flat and I am sure fixing this as well had some effect, but when starting lapping my CPU on a flat glass, the highest points were corners and edges, and pretty high up too. That cant be good for heat transfer, and with the results we are all experiencing here, I'd say that lapping is good. Unless we are all liars or hallucinating, lol

[.Belial.]

How risky would you guys say lapping your IHS is?

I was wondering if i should bother to do it, or if it would be too risky? I know my way around a computer, so i don't think the risk should be made any higher by myself. But what would you guys say?

I'm talking about an E6600, would be nice to get the temperature down so i would be able to overclock it to 3.7ghz perhaps.

[Philly_Boy]

How risky would you guys say lapping your IHS is?

I was wondering if i should bother to do it, or if it would be too risky? I know my way around a computer, so i don't think the risk should be made any higher by myself. But what would you guys say?

I'm talking about an E6600, would be nice to get the temperature down so i would be able to overclock it to 3.7ghz perhaps.

Heck, I should be hitting that with my lapped E6300 later tonight!! Yes, folks, a 100% clock is made possible by having good cooling, good supporting gear (mobo, ram, psu, etc) and the patience to overclock methodically.

I'll post screenie's of my efforts later tonight or tomorrow if the session runs late.

[pois0n]

My AS5 has baked a bit more, now I'm sitting on 23-27°c with stock cooler at 18°C ambient Best modification I've ever done on this computer

[cool_dude]

Nice

Anyone kind enough to create a video review on lapping for us??

[Zeus]

My AS5 has baked a bit more, now I'm sitting on 23-27°c with stock cooler at 18°C ambient Best modification I've ever done on this computer

It's relevant to tell what Vcore and program you use to rrad out temps.
Temps skyrocket with increasing Vcore beyond believe.

Also Asus' very nice (NOT!) PC probe says my cpu is just 25C while TAT tells me i'm having a blistering 39C.

This is with 1.425Vcore and watercooling, running 3.6GHz rockstable 24/7.

I lapped mine yesterday but gains seem to be very little, mine was pretty flat compared to others to begin with.

I will let the AS5 settle some more and see how much i gained.

[Contero]

You're making a simple logical mistake. If I say the moon is made of cheese, it's not your job to disprove that theory, it's my assertation, so the burden of proof falls on me. Everything I've found on lapping even remotely scientific suggests waste of time and warranty, your theory of helping will be questioned until it's actually proven.

Everything I've found on the moon even remotely scientific suggests that it is made of cheese. I won't let you see any of this evidence though. It may hurt my argument.

I don't see how someone can come into a thread full of people reporting that lapping has some beneficial effect, claim that it's BS, and then pull out the argument that the burden of proof isn't on them!

I'm certainly the one making a logical mistake here.


Sorry for bringing the thread down to this level. My next post in it should be pics of a lapped IHS. I won't fill up this thread with any more nonsense.

[Shaolin3a]

Someone should turn this into a database and then people can see that lapping is not "worthless effort" as some put it. I personally have lapped several sinks back when I had my 478 p4's and it most certainly gave drops in temps(~4*C), especially when I didn't have the greatest heatsinks(coolermaster jet and something else). Looks like I might have to do this to my e6300 as well.

You're making a simple logical mistake. If I say the moon is made of cheese, it's not your job to disprove that theory, it's my assertation, so the burden of proof falls on me. Everything I've found on lapping even remotely scientific suggests waste of time and warranty, your theory of helping will be questioned until it's actually proven. This is simple critical thinking.

Have you taken a class in logic? If you disagree with an assertion then you're also making an statement in the argument which would then need to be proved. Where did you come up with this "responsibility" theory?

I for one don't believe that intel makes a chip out of the 65nm process that is so complex and the tolerences are so tight that few people on this board can even comprehend it and then turns around and slaps a piece of garbage heat spreader on it. That's like buying a porsche and then re-painting it.

Too bad Intel doesn't make these IHS's nor do they care how it is apparently. If they did maybe we would see better quality.

[G.Foyle]

Why??

because oil from your fingers lessens heat conductivity. I touched mine by accident and even after cleaning the fingerprint with isopropanol a faint lines could be seen. I think oil somewhat corrodes the bare copper.

[mrt2]

isopropanol is just plain household rubbing alcohol right?

[Spawne32]

because oil from your fingers lessens heat conductivity. I touched mine by accident and even after cleaning the fingerprint with isopropanol a faint lines could be seen. I think oil somewhat corrodes the bare copper.

i use latex free or nitrile gloves when doing this kinda stuff

[kurg]

How would he post up evidence if he knows it's stupid? No sense in screwing a c2d just to prove that people are infatuated wtih shiney things.

You're making a simple logical mistake. If I say the moon is made of cheese, it's not your job to disprove that theory, it's my assertation, so the burden of proof falls on me. Everything I've found on lapping even remotely scientific suggests waste of time and warranty, your theory of helping will be questioned until it's actually proven. This is simple critical thinking.

I for one don't believe that intel makes a chip out of the 65nm process that is so complex and the tolerences are so tight that few people on this board can even comprehend it and then turns around and slaps a piece of garbage heat spreader on it. That's like buying a porsche and then re-painting it.

There's no logical mistake here, it's simple science. You wouldn't argue with science, now would you?

Which is a better conductor of heat, TIM or the actual metal touching the CPU? Rephrased, would you agree that the fewer interfaces between something and a thermal conduit, the more efficient the transfer of heat will be?

Now, picture a concave IHS, and a flat one. Guess which one will more efficiently transfer heat to its surroundings.

If I sound condescending, it's because your point makes no sense. There's nothing to prove. Lapping a concave IHS to improve flatness can reduce the internal temperature of the CPU in some cases, and in some cases by a considerable amount. This is known, it's silly to question it.

As for your non-point about Intel's IHS quality, have you ever heard of the phrase "polishing the golden canonball"? Intel has no need to spend money on a component of the chip when that component performs within expected parameters. The IHS works fine at stock voltages and speeds even if it's concave and has TIM lathered on it. That's all they care about. When you operate the CPU outside those parameters, this isn't necessarily true.

Now, I do agree polishing it with brasso and getting it mirror shiny is pointless.

[jws2346]

So you're debunking someone else's unsupported claim by making unsupported claims of your own? Good job.

If it's a waste of time or getting a 10 degree difference is impossible, post up some evidence to support it. Don't say "You're all full of it" then expect anyone to take you seriously.

Yeah know., the last cpu heat spreader I lapped was a PD 805. I have lapped a couple (ie: X2 4200+, 3000+, PD 805, P4 2.66, Celly 346) and I have NEVER got a 10c gain in temperature. I think anyone that claims they did: 1)had improperly installed their HSF to start with, 2) has bad eye sight or a temperature program or temp sensors that are very inaccurate or 3) are stone cold bullcrap artists. I have at present 4 C2D's and one on the way. I run them 24/7 folding and have checked all of them with the "ketchup glass" technigue to see if they were concave or convex (thankfully none so far are, I'm waiting on another E6600, I already have one, and I haven't had a chance to check it yet) IMO anyone that laps a cpu heat spreader without checking it first and voids the warranty is not very smart. (even if you never warranty it, the chip would be harder to sell) I've also read on many sites creating a "mirror" finish is a waste of time, it seems 600 grit paper is sufficient (I like to go to 1500 grit, I'm apearence anal), flatness is what's the most important. And another thing I read a post saying the AS "line" method of applying TIM wasn't any good, all I can say is I'll join the other millions of satisfied users and say I think the line method works great. I've done many cpu resets using the "line" method, both for me and people with first class gear I know. Evidence to support what I have I posted "you've got to be kidding me". Being a point provider in the top 20 of a folding team (pretty regularly) of over 6,000 people ought to be a little convincing even for a "moron". jws2346 , the greatest team on the "Net" Team 32 (overclockers.com)