Lapping geforce 2 mx

[Stephen Castles]

my geforce 2 mx chip is a little concave on the middle, how far can i got before i ruin the chip? is there a guide for lapping these ?

[Monaco]

first I lapped mine enough so that the printed logo and stuff was gone. Then I went hog wild and lapped it until I could see the light metallic outline of the chip itself, and there I stopped.

Helped my temps a LOT, and was easy to do. Just stop after taking off the printed stuff if you want to play it safe.

Not much of a guide is needed-take fine grit sandpaper, I used 600 grit, and wrap it around something that will fit on the core and is very flat. Then go to town! Slowly.:)

[Stephen Castles]

thats might be the heat spreader inside the chip you got, i just want to get it flat, but i know middle is concave so the HSF only contacts the sides of the chip.

[Monaco]

Actually, it was the deep, coppery color that indicates the back of the GPU core. At least, I'm pretty sure it was teh back of the core.

A little bit farther and I'd have been sanding transitor junctions!:) lol I've killed a card from overzealous sanding a while ago, I sure don't want a repeat:)

I had to sand mine quite a bit to get it as flat as I wanted it. I've yet to see a GPU core that was flat enough out of the box- flatness is not a priority when they makes the things, I guess!

[Da Whip]

Here is a Chipset lapping guide;
http://www.ocaddiction.com/articles/howto/lapping/[/URL]

[eobard]

Geez you know everything don't you Whip.



Can I have next week's lottery numbers? :beer: