graysky Posted June 11, 2007 Posted June 11, 2007 (edited) Well, after lapping my HS, I've had this nagging little voice in my head telling me to do the same from the CPU. I did the job with 800 grit sandpaper. Initially, I told myself I'd just buff what's there right now just to see if it's level. After about 30 laps in one direction and 30 in the other direction I discovered I had quite a concave IHS. So I just kept at it. Two 9x11 pieces of 800 grit later paper later I was left with a darn flat layer of copper looking back at me. I finished the job and put a mild shine on it with a sheet of 1000 grit I got from the local auto parts store just for the crap of it. Here are a few pics and the temp. results I got from lapping both my CPU and HS. I would recommend that anyone wanting the best $20 decrease in temps should consider lapping both the CPU and HS. Hardware details: Q6600 @ 9x333 and vcore of 1.2625V in the BIOS, P5B Deluxe (vdroop modded) cooled w/ an Ultra-120 Extreme (lapped) with Scythe/s-flex SFF21F 1600RPM fan, in a P182 case: Temp results: Each temp. point represents an average of data collected over approx. 1 h time period during the 2nd pass of a 2-pass x264 encode of a 720x480 DVD source using a high quality video profile. Data points were logged by Speedfan every 3-4 seconds over this time period. The average CPU usage was >99 % on all 4 cores throughout the experiments. Also room temp was between 20-22 Edited November 30, 2007 by graysky Share this post Link to post Share on other sites More sharing options...
hardnrg Posted June 11, 2007 Posted June 11, 2007 wow, the concavity reminds me of my XP-120 lol... I know what I'm doing if I get a Core2 Share this post Link to post Share on other sites More sharing options...
road-runner Posted June 11, 2007 Posted June 11, 2007 wow, the concavity reminds me of my XP-120 lol... I know what I'm doing if I get a Core2 I am going to do mine one day this week if everything goes ok, I should be moving everything to water cooling if the 2900xt is not DOA. Share this post Link to post Share on other sites More sharing options...
Verran Posted June 11, 2007 Posted June 11, 2007 wow, the concavity reminds me of my XP-120 lol... I was thinking the same thing. Sounds like the old XP-120 problem Someone else recently reported good luck with lapping a C2D. Maybe this is the beginning of a new trend around here Share this post Link to post Share on other sites More sharing options...
graysky Posted June 11, 2007 Posted June 11, 2007 Plus, C2D and C2Q chips don't have any pins to bend which makes it much easier Share this post Link to post Share on other sites More sharing options...
NCC10281982B Posted June 11, 2007 Posted June 11, 2007 wow, the concavity reminds me of my XP-120 lol... I know what I'm doing if I get a Core2 :withstupid: 10 degrees, nice. :goes to get sandpaper: Share this post Link to post Share on other sites More sharing options...
graysky Posted August 6, 2007 Posted August 6, 2007 I just edited/updated the first post of the thread with a few more pics and a brief description of how I lapped the chip for anyone interested. Share this post Link to post Share on other sites More sharing options...
CoolMaster Posted August 6, 2007 Posted August 6, 2007 very nice I must say Share this post Link to post Share on other sites More sharing options...
Rokkaholik Posted June 6, 2008 Posted June 6, 2008 Nice Walk Thru! I'll be lapping my Thermalright Ultra 120 Extreme when my new fan gets here. I was just going to ask what papers to start with, but all questions have been answered B:) I never thought of looking to see how flat my Q6600 was. I guess I'll straight edge that while the cooler is out and see how good/bad it is Share this post Link to post Share on other sites More sharing options...
Great_Gig Posted June 6, 2008 Posted June 6, 2008 Good job and thanks for the pics too. I am shortly starting a new build with a Q6600 and a TRUE, will be lapping both. GG Share this post Link to post Share on other sites More sharing options...
Ste Posted June 6, 2008 Posted June 6, 2008 Those load tempartures seem high for only 3 GHz. Back when I actually had a working quad GT, my Load Temp hit 70C at 3.7 Ghz and 1.3375 Vcore, VID is 1.25. is your ambient temp high? Share this post Link to post Share on other sites More sharing options...
rourkchris Posted June 7, 2008 Posted June 7, 2008 (edited) Saw this again and it inspired me to lap my Q6600. I applied the AS5 properly this time as well. At 80+ degrees F ambient temps my load temps at 3.6Ghz(which I couldn't run at previously in this type of heat) are quite good. 52,55,51,54 at 100% load. It's also out of the case and on a tech station with direct fan cooling I should add. Thanks for posting your results. Edited June 7, 2008 by rourkchris Share this post Link to post Share on other sites More sharing options...
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