CPU Adapter??

[Juliana]

Is it better to use CPU adapter(copper) between the CPU (FC-PGA type) and the heat sink to make better contact with the whole CPU upper side, not only the small central core ... so the CPU might run cooler ... what do you think ?
Thanx for reading

[Bsdboy]

I don't think they are necessary and if it is a little too thick it would prevent contact between the core and heatsink

Bsdboy

[DanU]

Not only are they unnecessary, but they could be dangerous. A poorly made or incorrectly installed spacer could short out the components mounted on the CPU. If it's even remotely too thick, then your CPU could burn up.

Nearly all of the heat is generated by the small core anyway, so it doesn't do a lot of good to cool the rest of the CPU.

[This message has been edited by DanU (edited 06-13-2001).]

[krusty the klown]

Do you mean something like this:
http://www.theoverclockingstore.co.u...ics/800188.jpg

These shims are designed to minimise the chance of core crushing - they stop the heatsing rocking to one side when you're attaching it. If the heatsink does this and a lot of force is being applied, then the pressure increases enormously and the core can crack.

They do nothing for heat dissipation.

If you're talking about adding a solid copper plate between the heatsink & CPU, then you would have to modify the heatsink's clip to take into account the thickness of the copper (so you do not apply too much force to the CPU and crack the core).

If you are looking to improve the performance of your heatsink, you could consider lapping:
http://sysopt.earthweb.com/articles/lap/index.html

[Juliana]

I have tried to put this flat copper piece between the CPU and the heat sink .. (yes Krusty it is the first picture) .. and after that i couldn`t reboot .. the system hangs on windows log screen and freezes.. after that i couldn`t get to the Safe mode too .. after too many unsuccessful tries.. i took the copper off and my PC worked again like a king ...
I almost had a heart attack coz i thought i might cracked the core or ruined the MoBo as i used great force to attach the heat sink ...


Bsdboy, DanU, and Krusty thank you so much for your replies .. and i should`ve read your comments before trying this thing .. anyhow it was just a new lesson ..( and waste of 12$ on that copper ) ..

[LutaWicasa]

I found in my case by using a shim, it raised my temp by about 3-4c.

[krusty the klown]

OK, does your heatsink have little rubber pads like these:
http://www.hardocp.com/articles/cool...ottomalpha.jpg

The pads are designed to help prevent the rocking and core crushing I mentioned earlier.

If it does have pads, then the reason your PC would not boot is more than likely because with a combination of the shim and pads, the CPU core would not have been in contact with the heatsink. This is a very dangerous situation, as the CPU is effectively operating without a heatsink.

This would explain why the heatsink required so much force to apply with the shim in place!

You were lucky - HardOCP killed a 1GHz T-Bird doing something similar:
http://www.hardocp.com/articles/cool...ird/index.html

Ouch!

[Szech]

Whoo! You got pretty lucky there Juliana!

I don't like those shims. They are extra money, and you have to worry about shorting, improper manufacture, shifting, heat trapping, blah blah blah... The only application I see for them is if you are using a huge heatsink or water block, which would otherwise damage the processor.

[Juliana]

Thank you all for your help .. Well i think i really was in luck -somehow-, i still have my CPU working and thats the good news ...
I bought FOP38 fan and i`m willing to try it soon .. Thanx again ...