Studio 1557 copper shim dimensions/thickness

[pp02442]

Hi, have just bought a Studio 1557 off eBay, but only after buying (not yet received) did I read various forum comments, here and elsewhere, about overheating issues (especially for the GPU, the HD 4570).
I want my laptop to last years (hopeful, aren't I!). I've read that several members have managed to put a copper shim (with thermal paste either side) between the chip and its heatsink and successfully lowered operating temps. that way, but can't find any mention of exact dimensions for the shim!
There are a couple of sellers on eBay that offer copper shims for laptop chips but they don't appear to have a stock one for the Studio 1557; they are willing to make one to measure, if I can supply dimensions, i.e. size and thickness.
I'd be grateful if anyone who's successfully fitted a copper shim to the GPU, in particular, of their Studio 1557 could post the exact dimensions, obviously including thickness, of the shim. Cheers!

[OneCool]

1/2 inch square by 3/64 of a inch thick should be good.

[pp02442]

Thanks OneCool, just what I needed! Approx. 12.7mm square, 1.2mm thick, since I'm Europe-based :-)
(This is for the HD 4570 GPU chip, right?)

[OneCool]

Yep.Make sure everything is clean of old thermal paste before you apply the new.When you put it in,cover one side of the shim with as5 and stick it to the heatsink,then cover the gpu's (of course to cpu the same) core with as5 before you install the the heatsink.
Keep a eye on on the thermal pads for the memory,they are very stick and can get creased or folded.make sure they are straight and flat.

[pp02442]

Great, and many thanks for the detailed pointers. Hopefully I'll receive the 1557 this week, have already ordered a 13mm square, 1.2mm thick copper shim, will try installing it this weekend (I use Arctic Ceramique compound, presume it'll be OK). Once again, thank you!

[Simpler=Better]

I highly recommend Innovative Cooling's diamond-based compound aka "ICD7" as it conducts better than AS5, and it is thicker as well (makes installation easier)It is similar in price to AS5

Shimming can make a huge difference, I dropped my temperatures by around 10*C

[pp02442]

Your note prodded me to read on NBR about the IC Diamond compound. Given that its so thick/viscous, would you recommend this instead of the copper shim (for the GPU), or in addition, i.e. applied either side of the shim? (I've bought a tube anyway, to try it... perhaps on the CPU, using the shim+Ceramique for the GPU?)

[techifan1]

Originally Posted by pp02442

Your note prodded me to read on NBR about the IC Diamond compound. Given that its so thick/viscous, would you recommend this instead of the copper shim (for the GPU), or in addition, i.e. applied either side of the shim? (I've bought a tube anyway, to try it... perhaps on the CPU, using the shim+Ceramique for the GPU?)

I would also like an answer to this question. Any takers?

[OneCool]

It wont cover the gap but you can use it on both sides of the shim.

[techifan1]

Originally Posted by OneCool

It wont cover the gap but you can use it on both sides of the shim.

Thanks for the feedback OneCool. Just for interest have you read some of the comments on the Official ICD7 Thread? The guys there are saying that it can be used to replace thermal pads because it is very thick, like putty.