Lapping - Tech Support Forums

joker_927 · January 18th, 2003, 12:42 AM

How many of you guys actually Lap a heatsink before you use it?

I bought a Athlon 2400+ a SLK-800 heatsink and a 52 CFM Sunon fan for the CPU, and Arctic Silver 3. Can you guess I want to overclock?

Well, I was just going to put the AS3 on the heatsink and clip it on, but if this lapping this will help a heck of a lot... I just don't know how much it costs for 5 sheets of sand paper

daveleau · January 18th, 2003, 12:47 AM

I only lap my HSs if there are visible defects in the smoothness. Otherwise, I do not trust my craftsmanship to keep my sanding level enough to make the connection between the HS and processor better than it was originally. To me, thermal goop is sufficient in making the minor imperfections a negligible problem.

chris64 · January 18th, 2003, 01:05 AM

Quote:

Originally posted by daveleau
I only lap my HSs if there are visible defects in the smoothness. Otherwise, I do not trust my craftsmanship to keep my sanding level enough to make the connection between the HS and processor better than it was originally. To me, thermal goop is sufficient in making the minor imperfections a negligible problem.

You could use a credit card to make sure its straight but that wouldn't work for really minor imperfections but it would detect areas where you sanded to deep.

daveleau · January 18th, 2003, 01:06 AM

Good tip.

nukes · January 18th, 2003, 08:06 AM

I take it nobody actually laps their CPUs anymore?

uethello · January 18th, 2003, 08:40 AM

I always eventually lap. Maybe not when I first get the sink, but eventually. Always brings the temps down. I wouldn't do it if my sink had a mirror finish though.

I Get a picture frame from the dollar store, throw away the frame, keep the glass. get 200, 400, and 800 (these are just what I use, you'll find alot of different opinions) wet/dry sandpaper. You have to have wet/dry.

I squirt under the paper with water, this is a trick to suction the paper to the glass. lay the paper down and wipe around it with a towel. tape it. squirt the top of the paper. When the sink is sanded a bit, it will kind of suction itself to the paper, if you take your time it's really pretty easy. Oh, and I always sand in a circle.

This is becoming unimportant now, as most of the sinks now have mirror or near mirror finishes.

KenKun · January 18th, 2003, 09:13 AM

I didn't lap my current Tt V7+ because it had a great shiny base by default ..

I lapped my last TaiSol and GlobalWin cause i saw clear scratches, lapping them bought me few C degrees down

Regards

chris64 · January 18th, 2003, 03:59 PM

Quote:

Originally posted by nukes
I take it nobody actually laps their CPUs anymore?

I'm not sure about Pentiums but I'm pretty sure nobody laps a Duron or Athlon/XP/MP proccessor mainly because if you do your actually grind down the Core itself

but for most intel chips I'm sure someone here has because most of em have a Heatspreader.

iNeb · January 18th, 2003, 04:05 PM

What's lapping?

Also, can i over clock a 2100+ with a slk-800 heat sink and a Thermaltake SMART CASE FAN II

chris64 · January 18th, 2003, 04:12 PM

Lapping is when you try and get imperfections out of the HSF to make the Proccesor run cooler. And for your other question I would reccommend that you make a new thread as not to take this one off topic. Hope this helps.

EDIT: Some people also lap proccessors(Intel ones with heatspreaders not the AMD's without one)