ebarone Posted February 8, 2009 Posted February 8, 2009 (edited) I lapped my E8400 a couple weeks ago, and I thought I'd share my results with you all. I know its a bit late but meh I was better prepared to do it this time, lapping up to 2000grit (this was my 2nd attempt ever at lapping a proc). So here ya go: Unlapped (actually I made like 6 passes before remembering to take the before photo): 400 grit: 800 grit: 1500 grit: 2000 grit: I lapped the CPU to 2000, the heatsink to 2500, and replaced my old Zalman goop with a new thinner layer of AC MX-2 goop. The result of that 12 hour job (I was watching an awesome movie marathon on tv, otherwise it would have taken 2) was a whopping 13 degree celcius drop in temperatures Hope you like it! Edited February 8, 2009 by ebarone Share this post Link to post Share on other sites More sharing options...
Turophiliac Posted February 8, 2009 Posted February 8, 2009 very nice, maybe a better pic is needed for the last one to truly appreciate the final product. but good job. is that 13C on load? Share this post Link to post Share on other sites More sharing options...
scr4wl Posted February 8, 2009 Posted February 8, 2009 Great job man :thumbs-up: 13c That's amazing Share this post Link to post Share on other sites More sharing options...
Waco Posted February 8, 2009 Posted February 8, 2009 This makes me want to lap my Q6600. I wish I could de-lid it like I did with my old Opty. Share this post Link to post Share on other sites More sharing options...
Andrewr05 Posted February 8, 2009 Posted February 8, 2009 (edited) This makes me want to lap my Q6600. I wish I could de-lid it like I did with my old Opty.From what I gathered you can... Its just soldered on and requires quite a bit more finesse than the cpus of yesteryear... HERE IS A GUIDE Edited February 8, 2009 by Andrewr05 Share this post Link to post Share on other sites More sharing options...
ebarone Posted February 8, 2009 Posted February 8, 2009 Yea sorry about the last picture... theres a better one but the clarity of it makes it look worse haha. Theres a big scratch across the top that isnt visible except when a camera takes a flash photo of it, but it looks kinda nasty. And yea... my cores were running at 66 degrees during prime95... after that whole process, they were at 53. I've since overclocked my proc more than that, so they're back up in the 60s on the cores, but I wouldnt be there now if I hadnt lapped Share this post Link to post Share on other sites More sharing options...
ekiM Posted February 8, 2009 Posted February 8, 2009 13c! Good god man, that's amazing! Nice job, I hope you squeeze some more mhz out of that E8400 now Share this post Link to post Share on other sites More sharing options...
DLS2008 Posted February 8, 2009 Posted February 8, 2009 Is your signature updated to reflect the new OC and voltage? Also, what were the IHS and HSF looking like before lapping? Were they warped to the point you could see it without a straight edge? Share this post Link to post Share on other sites More sharing options...
ebarone Posted February 9, 2009 Posted February 9, 2009 The first photo (the "before" photo) was taken after I think 30 up and down passes. The edges of the IHS werent significantly higher than the center, but they were by no means level. The HSF was already perfectly flat, but not as mirror smooth. It was weird lapping it, since it looks like this, I ended up just taking a square piece of glass, taping a wet peice of sandpaper to it, and running that back and forth over the upside down base. The settings I have in my sig are for 24/7 use, I've booted at 4.32ghz but it was unstable. Share this post Link to post Share on other sites More sharing options...
DLS2008 Posted February 9, 2009 Posted February 9, 2009 What are your temps? It seems like you should be able to push it farther being your voltage is still low. Share this post Link to post Share on other sites More sharing options...
ebarone Posted February 9, 2009 Posted February 9, 2009 To get it to 4.32 I had to up the voltage quite a ways, approaching 1.4v, but I couldnt really get it stable (granted I didnt try all that much). I made it through a SuperPi 32M test and I topped at 67C in the cores, around 62 for the cpu overall (t_case I think its called?). The need for so much more voltage discouraged me from really pushing too much harder, but if you guys request it I'll see what this baby can do Share this post Link to post Share on other sites More sharing options...
DLS2008 Posted February 9, 2009 Posted February 9, 2009 So you've hit the point of diminishing returns then. It just takes too much voltage to go any higher. That's still a pretty dang good OC, about 140%. Share this post Link to post Share on other sites More sharing options...
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