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Zalman 7000 CU Disappointment - Page 2

post #11 of 18
Nice! Glad you got things worked out.
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post #12 of 18
I'm running the Zalman 7000 cu on my P4 3.06 Northwood,(NOT o/c'd) and idle temps stay in the 30C range,(idle usually is around 29-32) and loaded with Prime95, or playing games, never gets over 40C. I'm pretty happy with the performance of this monster. I looked hard at the Big Typhoon, but opted for the open cooling fins on the Zalman, rather than the smaller tighter fins on the BT.
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post #13 of 18
for those of you who have somewhat dissapointing temps... i suggest lapping the coolers and that im almostpositive with drop your load temps another >3-6c... but do this only if you dont plan on returning it...
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post #14 of 18
what does lapping mean? sorry im new.
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post #15 of 18
yeah :withstupi

What is lapping?
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post #16 of 18
lapping is smoothing out the bottom of the heatsink in order to get the smoothest surface possible for heat transfer between the processer and the heatsink. the more contact are you have, the more heat transfer will take place. i've never done lapping but I assume you can use some high grit sandpaper, they might even make lapping kits.
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post #17 of 18
woot good to hear
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post #18 of 18
from the scrap bin at the hardware store, about 8"x8" each and on the thicker side, some 3-M spray adhesive, and single sheets of 600, 800, 1000,1200,1500 grit sandpaper. Exactly where you start 6 vs 800 depends on the stock shine-where you end depends on your degree of manic OC'ers syndrome (more later) I'd do 800 if your Zahlman looked like mine out of the box. Apply the 800 to one side of the glass with spray adhesive, let it dry~ 10 min. Now holding the HS FLAT slowly move it in a smooth figure 8 pattern. You dont need to press down just be smooth. After a few min, pick it up and rotate it 90 degrees in the horizontal plane ie 12 o'clock corner to 3 o'clock and keep going Youll notice it starting to shine and the tiny machine lapp scratches are beginning to disappear. After about 10-15 min flip the glass over and repeat the above with the succession of grits, switching to fresh glass as you go. Dont peel off the old sandpaper and try to re-apply the next grit level cause you need an absolutly flat surface and that wont do it. If you get impatient and auger in youll notice you made new scratchs: start over on that grit till the new ones are gone . If your REAL manic and do this up to 1500 youll be able to see your eyelashes in the mirror like reflection on the bottom of your HS. Its time to stop at this point or seek therapy.
Take your time-Usually takes about an hour depending on what your starting point is. Be shure to clean off the HS with alchohol well before reinstalling it to remove any minute metal debris. Good Luck
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