[Important] Toshiba A300-1MM Thermal pad size

[harispap]

Hello,
I have a Toshiba Satellite A300-1MM Laptop (this model has a INTEL GMA gpu and not a ATI Radeon one). My problem is that the thermal pad on the Graphics Card was removed by an unskilled techinician who have cleaned my laptop 2 yeara ago (I didnt know how to clean it back then) and replaced by paste. However, as i see, the gpu does not make solid contact with the heatsink just with paste.
Can you please tell me the size of thermal pad i need to purchase? I have found this image which may be helpful

[diif]

Re: [Important] Toshiba A300-1MM Thermal pad size

Probably 1m thick.

[jiroy]

Re: [Important] Toshiba A300-1MM Thermal pad size

Anything more than thick is fine . The screws pressure will handle the rest .

[harispap]

Re: [Important] Toshiba A300-1MM Thermal pad size

Thank you for your replies! You replied faster than I expected
Is this thermal pad OK for use in this laptop? http://www.e-shop.gr/ek-water-blocks...m-p-PER.816106
If not, can you please recommend me another one from this site?
Thank you very much for your interest!

[piernov]

Re: [Important] Toshiba A300-1MM Thermal pad size

You can't use a thermal pad that's too thick. Under the pressure of the heatsink it will split in two and therefore not make good thermal contact. Most of the time I use 1mm so it should be fine. Sometimes 1.5mm (or thicker) but not on the BGAs, they are found on VRAMs, coils or MOSFETs for example.

[harispap]

Re: [Important] Toshiba A300-1MM Thermal pad size

Is thermal conductivity 3.5w/Mk 1MM thermal pad enough for the GMA? I see some 8.5 w/Mk thermal pads, but too expensive , and I dont think that this GMA chip needs so much thermal conductivity

[jiroy]

Re: [Important] Toshiba A300-1MM Thermal pad size

More than enough . Anything will do fine , as Intel GMA do not heat that much , not like those equipped with ATI or the heatmonger Nvidia .
Grab any water thermal pad if you have some junk parts . What you should care of in those A300 series is the void between the GMA chipset and the ventilation system .
Due to a very poor design , sometimes the four screws holding the Ventilation system become loose or come already loose ..

[m4a2t0t]

Re: [Important] Toshiba A300-1MM Thermal pad size

Am I the only one who hates thermal pads? In every system that I have replaced the thermal pads (with a BGA reball/replacement) with a copper shim they rarely need to be repaired again. Best thing about the shim is you can sand it down to a perfect fit and then use finer sandpaper to polish it back up.

[harispap]

Re: [Important] Toshiba A300-1MM Thermal pad size

Thank you for your replies! I ordered a 1MM 3.5w/KMk thermal pad and it is coming on Monday-Tuesday.

[harispap]

Re: [Important] Toshiba A300-1MM Thermal pad size

I installed the pad and Artic MX-4 paste on the CPU and it has very good temperatures (max 70*C with 36*C ambient temp)
Thanks for your help!