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Intel Motherboards & CPUs Questions or comments on INTEL products?

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Old 21st August, 2003, 08:04 PM
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Lapping the IS7-E North Bridge & HS

I've lapped all three of my canterwood/Sringdale boards, and this is the last, so I'd thought I'd document it. The rentention clicps on these 865/875 mobo's NB-HSF's are so easy to remove. I've experienced above 300FSB speeds in each case I've done this. First you'll see the thermal paste is white, that's not the way it came. I've noticed manufacturers using that universal "Pink" material. I don't beleive it's primary make-up is TIM. I beleive it's a bond. It has a rubber like base, and is extremely difficult to remove no matterhow much alcohol is applied. You'll notive I've taken Automotive Sandpaper (wet/dry 330 to 600) and wrapped it around a phillips screwdriver shaft. This is to ensure you lap the NB-HSF evenly across it's surface. You never want to use your finger because you may sand a concave, where contact is minimal or eliminated, in which case you could fry your NB chip; Be VERY careful with the Intel 875/865 MCH. You only want to remove the "blue" coating they place on there. Don't lok to sand down to copper, the chip isn't sonstucted of it. Simply remove the blue coat, untill it's silver, and smooth (only use 600 or higher). Notice in the firt pic, how I "pinch" the NB-HSF clamp's between my fingers pulling the tabs, in and then lifting up, and the other side will lift with some shifting;
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Lapping the IS7-E North Bridge & HS-cap_097.jpg   Lapping the IS7-E North Bridge & HS-cap_103.jpg   Lapping the IS7-E North Bridge & HS-cap_076.jpg   Lapping the IS7-E North Bridge & HS-cap_090.jpg   Lapping the IS7-E North Bridge & HS-cap_073.jpg  

(1.) 2.4C@3.6GHz 300FSB, SLK900U/Vantec Tornado 92mm/119CFM, Abit IS7-E, 1GB OCZ GolD Dual Channel 3700, Tyan G9700 Pro, PCPower&Cooling 400W
(2.) JIUHB1700, Prometeia, Soltek 75FRN2-L, 1GB OCZ EL-PC3700, Leadtek Winfast A250, ANTEC 480W

Last edited by Liquid3D; 21st August, 2003 at 08:16 PM.
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Old 21st August, 2003, 08:38 PM
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