Rockrtx Posted July 26, 2009 Posted July 26, 2009 Does sanding off the nickel plate base to copper make sense to get better temp on that cooler or it will have little to no difference because this cooler is pretty flat base out of the box? Share this post Link to post Share on other sites More sharing options...
OwinC Posted July 26, 2009 Posted July 26, 2009 Just try it out and see. There should be a temp decrease form lapping the cooler. Is your cpu lapped? If not, take it out and lap it as well. Share this post Link to post Share on other sites More sharing options...
Rockrtx Posted July 26, 2009 Posted July 26, 2009 Does sanding off the nickel plate base to copper make sense to get better temp on that cooler or it will have little to no difference because this cooler is pretty flat base out of the box? I did not lapped anything but i did the washer mod on my cooler ans saw -1c drop. Did you lapped your CPU? and what was your gain? Share this post Link to post Share on other sites More sharing options...
Rockrtx Posted July 26, 2009 Posted July 26, 2009 No repply!? I tough people on this site were pointing at top performance for OC. Nobody lapping there heat sink ?? Share this post Link to post Share on other sites More sharing options...
gebraset Posted July 26, 2009 Posted July 26, 2009 You have to give people more than two hours to reply, this isn't a chat based system. <_< I've got three processors lapped here, just got done with my main rig one a couple days ago actually. I do not have any of my heatsinks lapped, however I tend to see at least 5C drop in my temps when the CPU is lapped, though it depends on the processor I suppose. My old 3.2GHz Pentium 4 seemed to get the biggest boost, but as I said, they all saw temperature drops. Share this post Link to post Share on other sites More sharing options...
Crazy_Nate Posted July 26, 2009 Posted July 26, 2009 I thought the noctua's are already very flat. Lapping isn't about removing the nickel plating. It has just about the same influence as TIM. You want the best contact between the processor and the heatsink. If the noctua came flat...check your processor. Lapping the processor (if it's convex or concave) will get you further than the heatsink. Share this post Link to post Share on other sites More sharing options...
hardnrg Posted July 26, 2009 Posted July 26, 2009 I lapped my NH-U12P and it shaved off a few degrees like 63 load down to 59, on a Q6600... I found that 65nm processors have more concave IHSs than 45nm, so lapping the CPU was more effective than lapping the heatsink... I lap all my heatsinks though, it's a very cheap way to gain cooling performance, either for overclocked PCs, or silent ones Share this post Link to post Share on other sites More sharing options...
Rockrtx Posted July 27, 2009 Posted July 27, 2009 I lapped my NH-U12P and it shaved off a few degrees like 63 load down to 59, on a Q6600... I found that 65nm processors have more concave IHSs than 45nm, so lapping the CPU was more effective than lapping the heatsink... I lap all my heatsinks though, it's a very cheap way to gain cooling performance, either for overclocked PCs, or silent ones I may try to lap my noctua and post the result. Did anybody try lapping a i7 920? are they flat or concave? how much did you gain in temp? Share this post Link to post Share on other sites More sharing options...
ccokeman Posted July 27, 2009 Posted July 27, 2009 It the marks on the bottom of my waterblocks and heatsinks tell me anything they are concave. I have not lapped any of my i7's yet but may. I have lapped an e6700, q6600 and more than a few heatsinks and I usually end up with a decrease in temperatures. Sometimes it is worth the work sometimes not. When I do lap them it is not to get a mirror finish but to get them flat. Share this post Link to post Share on other sites More sharing options...
Rockrtx Posted July 27, 2009 Posted July 27, 2009 (edited) It the marks on the bottom of my waterblocks and heatsinks tell me anything they are concave. I have not lapped any of my i7's yet but may. I have lapped an e6700, q6600 and more than a few heatsinks and I usually end up with a decrease in temperatures. Sometimes it is worth the work sometimes not. When I do lap them it is not to get a mirror finish but to get them flat. I reinstall my heat sink 4-5 time and i think my i7 is high in center,i may got a better gain by lapping my CPU. What grit sand paper do you start and finish? I have read that anything over 1200 grit is not wort it....is that true? Edited July 27, 2009 by Rockrtx Share this post Link to post Share on other sites More sharing options...
ccokeman Posted July 27, 2009 Posted July 27, 2009 Anything over 600 gives you diminishing returns! 800 is about as high as I go anymore. I dont need to show a flashy base to show I did it. 800 grit and flat is where its at for me Share this post Link to post Share on other sites More sharing options...
Rockrtx Posted August 2, 2009 Posted August 2, 2009 (edited) This is my firts lap and wanted to try it so It took me 1h30 to lap my heatsink to 1500 grit and flat,but the base was pretty flat and saw no gain on my heatsink...maybe .5 degre to 1 degre.I tough i would share my experience anyway so if its flat don't waste your time LOL! http://img197.imageshack.us/img197/2021/img1817a.jpg http://img8.imageshack.us/img8/9441/img1818q.jpg http://img8.imageshack.us/img8/3655/img1819j.jpg Edited August 2, 2009 by Rockrtx Share this post Link to post Share on other sites More sharing options...
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