thermalright ultra extreme 120 rev. C base finish? - Page 2 - Techist - Tech Forum

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Old 12-14-2009, 08:06 PM   #11 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

^ once you start the lapping process, it will become all too evident if it was needed or not.. -The pattern on the heatsink as illustrated in the videos..

My P1 needed it BAD and my PII 940 I'm running now needed it as well with it's high edges..
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Old 12-20-2009, 02:42 AM   #12 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

Would it be worth it to only lap the heatsink?
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Old 12-20-2009, 10:48 AM   #13 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

Quote:
Originally Posted by Mikepsyche View Post
Would it be worth it to only lap the heatsink?
Yes, if the heatsink needs it. But not every heatsink needs lapping.
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Old 12-22-2009, 02:14 PM   #14 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

I have the TRUE 120, not sure which revision though. I think I'll give the lapping a go. I don't want to void my 920's warranty though, so I was just going to do the heatsink.
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Old 12-22-2009, 03:21 PM   #15 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

Go for it, every True I've seen needs it
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Old 01-16-2010, 10:03 PM   #16 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

Great info guys, I've heard the term "lapping" before but wasn't quite sure what I meant... now that I think about it, my heatsink has almost a "textured" finish... that can't be good!
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Old 01-17-2010, 12:04 PM   #17 (permalink)
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Default Re: thermalright ultra extreme 120 rev. C base finish?

^ I checked mine with a razor blade and some light.. I held the razor blade at a 90* angle to the surface of the heatsink at varying positions and look for light between the cut straight edge of the razor blade and the heatsink. If you can see light, it's not TRUE flat..

Stepping the grit of the sand paper will start to polish the surface. 200, 400, 600, 800, 1000gt, 1500gt then 2000 gt.. The 1000+ grit will start to polish the surface. As long as the surface is free of the heavy scratches, you will be fine. Just go up to 1000 or 1500 grit to finish polishing the surface.
I've been polishing things for a while now, so being a gearhead by DNA, this is nothing new to me.


EXAMPLE:
I polished all of my AC Components under the hood of my Camaro. This WAS dull aluminum. But I used polishing compound after the 1500 grit, though.. I was re-installing the system and a new reciever/drier and decided to shine them up.


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