4 hours well spent

[Prospector]

I just lapped my sink to 1500 grit,fired it back up and now I get

 

System 30

Pwmic 29

CPU 29-31

 

Ambient 19

 

Hopefully when the AS5 cures it will drop a little more.

 

The base on the XP-120 was Not flat. The base of the Tt Silent Tower I was using

wasn't flat either.

[cpuz]

Congrats! Nice job! How rewarding is that to perform a project such as that and then to realize and reap the benefits of your efforts!

 

Great job! and thanks for posting!!

[Prospector]

Thanks.Now with all the case fans at idle it barely breaks 40 while Priming.

It was certainly worth the time it took to do it. :nod:

[Ubermann]

I lapped my xp-120 also.

It was far from flat!

Big curve in the middle, took ages to grind.

CPU temp dont rise and fall like crazy if your remove the IHS also.

[THunDA]

What was the temps before the lapping ?

 

I wana lap my SLK948... but can we say lazy ... hehehe

[Guest Beast]

I lapped my xp-120 also.

It was far from flat!

Big curve in the middle, took ages to grind.

CPU temp dont rise and fall like crazy if your remove the IHS also.

 

Ah now this is what I wanted to hear. So can you confirm that if your remove the IHS on an AMD64 you DO still have enough clamping pressure from the XP-120? I am very keen to take my IHS off (and of course, lap my XP-120).

[psy^]

So can you confirm that if your remove the IHS on an AMD64 you DO still have enough clamping pressure from the XP-120?.

It will, but you need to modify the retention bracket Thermalright supply with the xp-120 first.

 

See those little legs on the underside?

You sand them about halfway down, maybe keep them taller than shorter to be safe.

[soundx98]

pics?

[Prospector]

Average 33-35 before lapping at idle so Iv'e cut 2degrees off and possibly

2-3 more when the AS5 cures.Right now Ambient temp is 20

 

System 31

PWMIC 30

CPU 31

 

All case fans at 50% rated speed :nod:

[Headd]

Where can I get some instructions to lap? Is there a kit I could purchase?

 

I'd certainly dedicate 4 hours for a few degrees less...

 

Idle 37-38c atm, Prime 51c max

[Vista]

This is one of the best guides I've seen that makes sense to me:

 

http://www.overclockersclub.com/guides/hea...appingguide.php

 

You might get somewhat better results with WD-40 or kerosene instead of soap or water as a cutting fluid/lubricant. Yes there are some kits available, but Home Depot and AutoZone can fix you up cheaper and faster.

[Fracture]

WD-40 or Kerosene? For sandpaper?

 

Wet sandpaper works just fine with water. Kerosene or WD-40 would just make more of a mess - it would offer no benefits that I can see. As a cutting fluid, yes, but not for lapping/sanding.

 

 

 

4 HOURS? Man, that's a long time. I've never spent more than 30 minutes to get a nice even finish. I go 600grit then 1500, and I usually arrive at a flat base quite quickly. If the finish is bad, I'll go 400/600/1500, but it still only takes me 30 minutes tops to get a nice finish. How come it took you 4 hours?