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Worth to lap my CPU...?

post #1 of 9
Thread Starter 
Yes, I know I'll get better temps.
At the very least I wanted to lap my HS before attempting my processor. I did it and it looks great, but AS5 is a bit too touchy and I gotta reapply it later.

Is it really worth lapping both surfaces?

Yes, I know I will get better temps. (Most likely.) Yes, I know I probably won't mess the chip up. I'm not really worried about messing it up ATM, but down the road if the chip starts bugging out, I can't send it back.

E6300's aren't horribly priced, so I can get one relatively soon if I do, but that money could go to something else if it does mess up and I can't RMA it.

Plus, I hate AS5 and it hates me, so it would remove the fact of using thermal paste.
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post #2 of 9
from what I've see from other people, it worth doing it, but AS5 are still need (just alittle amount of it) otherwise the temp won't improve.
post #3 of 9
Thread Starter 
Quote:
Originally Posted by hereonyourown View Post
from what I've see from other people, it worth doing it, but AS5 are still need (just alittle amount of it) otherwise the temp won't improve.
A lot of people don't use it, but if I do end up I'm going to try both with and without for myself.

Though, I wouldn't mind not using any for ~-7C instead of ~-8C with it - it's worth not putting up with it and not dealing with it to me.
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post #4 of 9
I tried lapping my deskrig CPU, which ended in miserable failure.

If you really want to, though, you have to get the right equipments and don't even think about half-assing it or something.

It's just a lesson that I learned. hahaha.

You gotta commit to it and spend the necessary amt. of time, whether it be 2 hours or 5 hours.

Have fun!
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post #5 of 9
Quote:
Originally Posted by The Pook View Post
Plus, I hate AS5 and it hates me, so it would remove the fact of using thermal paste.
You're still supposed to put on a very tiny amount of AS5.
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post #6 of 9
Quote:
Originally Posted by Akatsuki No Tobi View Post
You're still supposed to put on a very tiny amount of AS5.
Uh, I lapped both my CPU and heatsink, and my temps went up even by putting VERY little (say 1/8 of a grain of rice) AS5 on.

*EDIT*

Which reminds me of removing that in my sig... lmao
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post #7 of 9
Quote:
Originally Posted by gonX View Post
Uh, I lapped both my CPU and heatsink, and my temps went up even by putting VERY little (say 1/8 of a grain of rice) AS5 on.

*EDIT*

Which reminds me of removing that in my sig... lmao
That's probably because you got a very very good lap job. If someone were to lap both their IHS and HSF and the lapping is not perfect and there is no AS5 on it, the CPU could burn out.
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post #8 of 9
Quote:
Originally Posted by Zipnogg View Post
If you really want to, though, you have to get the right equipments and don't even think about half-assing it or something.

It's just a lesson that I learned. hahaha.

You gotta commit to it and spend the necessary amt. of time, whether it be 2 hours or 5 hours.
True, but the right equipment is literally some wet/dry sandpaper, duct tape, and a sheet of glass. The key is not rushing. The CPU goes WAY quicker than the HS by the way (less surface area).

To answer the OP's question, I got a little over an 8 °C drop by doing it. The data in the thread below is old; my AS5 has since "broken in" and the temps have dropped by an addition 2 °C so I guess my lap jobs gave me a 10 °C drop. This is on a Q6600 so perhaps it could be even larger on a dual core chip.

My Q6600 was significantly concave, meaning the sides of the IHS were higher than the middle. I lapped the IHS and my HS which helped improve the contact between them. The HS was actually convex. You can some pics and temp data in those threads.

Anyway, when you finish, don't listen to all the people who tell you that less AS5 is more. Do the experiments yourself as I had to. I originally used a small amount of AS5 after I lapped both my HS and CPU and found that my temps were worse than before. It wasn't until I upped the amount that I found that 10 °C drop.

Here is a shot of my q6600 installed in the MB with AS5 right before I added the HS. It shows the amount of AS5 I used, which is a thicker line than I used before lapping; the red triangle I drew shows where that tag is on the CPU, remember that on quad core chips, the dies are placed in a different located relative to a dual core, see the instructions on AS5's website for more):



Those instructions will also tell you to gently rotate the HS once you place it on top of the guide which is good advice. Also, before you put the CPU in the socket, do a dry run and make sure your HS is properly centered over the socket. I can't emphasize this enough. On my board and with my HS, if you're not careful, you can get fooled into thinking the thing is centered over the socket when in fact it was about 30 % off center. I reseated it 3 or 4 times with load temps over 70 C in TAT until I figured it out. In other words, don't go off if it looks symmetrical when sitting on the bracket, make sure the exact middle of the HS lines up with the middle of the socket where the CPU will sit.
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post #9 of 9
keep in mind you don't HAVE to use AS5. there's plenty of other TICs out there that do the same thing. how well they do it, however, is another story. personally i have a tube of dynex that works just fine. i'm sure AS5 would prolly be better, but not like "omgzorz AS5 is the bombezzizzy hax0rz lol"
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