mother of mercy
,
if you don't know why not to use a shim, you really need to reconsider overclocking. Shims are the DEVIL!
The biggest reason why Shims are evil is that they are a false security blanket, they don't do anything productive other than give you a false sense of security. Since shims can't be manufatured to your EXACT chip, there is a garaunteed chance of it being a little to thick or a little to thin for your chip. On top of that there can be a discreptancy in height on the different sides of the shim.
If to big the heatsink won't contact the core and will have it's performance hindered. If to thin then the shim was worthless since you can still crack your core. if lop-sided the heatsink won't fully contact slug and there will be air pockets.
Shims don't do anything other than increase your cores tempurature. I know I have tried two different shims on my computer, each time I gained about 2-3 degrees C. there is no point in using them.
oh, I guess that will do for now,