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Removing the coating on top of the CPU

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dimmreaper

Senior Member
Joined
Dec 16, 2000
Location
home
Many folks are lapping the coating off the top of the silicon. This coating is rumored to be plastic. So couldn't you just take a cigaret lighter and melt it off? Anyone tried this?
 

warduck

Registered
Joined
Jan 11, 2001
I dont think its removal makes any diff. Ive taken it off an left it on, no diff.

warduck
 

Nagorak

Senior Member
Joined
Dec 19, 2000
Jeff Evans (Mar 10, 2001 02:37 a.m.):
Many folks are lapping the coating off the top of the silicon. This coating is rumored to be plastic. So couldn't you just take a cigaret lighter and melt it off? Anyone tried this?

Holding a CPU over an open flame will generate a lot of heat. I'm not sure it's the greatest idea to heat your CPU up like that, lighter or not... Not to mention, if it were plastic it would just melt off if you turned your heatsink fan off and let it heat up. Therefore I'd say it probably is not...
 
OP
dimmreaper

dimmreaper

Senior Member
Joined
Dec 16, 2000
Location
home
Nagorak (Mar 10, 2001 03:27 a.m.):
Jeff Evans (Mar 10, 2001 02:37 a.m.):
Many folks are lapping the coating off the top of the silicon. This coating is rumored to be plastic. So couldn't you just take a cigaret lighter and melt it off? Anyone tried this?

Holding a CPU over an open flame will generate a lot of heat. I'm not sure it's the greatest idea to heat your CPU up like that, lighter or not... Not to mention, if it were plastic it would just melt off if you turned your heatsink fan off and let it heat up. Therefore I'd say it probably is not...
Yeah, now that you mention it, I don't see how it could be plastic either.
 

LimeyGreg

Senior Member
Joined
Dec 20, 2000
Location
Los Angeles
I believe it's a thermal epoxy that is used. It looks like it's quite a thin coating and is there to prevent moisture - but who knows? I have read where people have tried lapping it and ended up with a less stable chip - oops!
 

Colin

Arctic Silver Senior
Joined
Dec 19, 2000
I lapped mine too. In the process I changed to AS II and a Maze2 block. There was a dramatic drop in temps. While I cannot attribute all of this to lapping the CPU, it must have helped. As I removed material from the CPU, it took a while before the surface became flat. This along with the recesses in the chip from the serial number etching must have had an effect on thermal transfer.
 

Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
I have wondered about that also. Perhaps lapping mine will stop the silver flecks from growing on the printing. See the what's in AS post for more details.

Hoot
 

TT120

Senior Member
Joined
Mar 1, 2001
Location
Sacramento, CA.
Lapping your CPU? YIKES! I dont think I'm brave enough to do that to my brand new T-Bird yet. I cant get mine to go any higher but it doesn't seem to be a cooling problem as it only runs at 35c max under full load.
 

Phil

Senior Member
Joined
Jan 13, 2001
Location
Bolton, UK
I don't know how much it is worth doing to an amd as their cores are ceramic I think, and they are quite brittle, with intel though I think it's either nickel or aluminium and if it wasn't for my warranty I would have done it already as I did it to a p2 233 recentall and that along with doing it to the stock sink and using as plus some ramsinks on the L2 cache got it up to 400mhz with 3.1v