copper shim in n5010?

Hey guys, I've been trying for the last week to get this working for my GPU with no success.

It had a thermal pad on it but I throw it away like an idiot. Right now I have a 1.5mm shim in there, but the heatsink for the GPU applys very liitle pressure to the chip and was wondering if I could add another 0.7mm shim that I have to add some needed pressure? I've never read of a gap that big before but right now it idles at 50 and can't play games or it'll melt.

my cpu sits at 29/18 so airflow is not a problem, purely the gpu and lack of pressure it seems.

here's my specs;
i5 460m
ati 5650m
4gb DDR3
windows 7

cheers alex

EDIT: I've just realised, the GPU may be having a problem with the thermal paste as the chip surface has ATI carved on it

Anyone recommend good thermal pads?

 

bump post

but also, I found that removing the mesh from the two lower vents (over the cpu and under the mouse pad increases heat by up to 5 degress)

So I covered all vents apart from the fanvent inc. ram vent with electrical tape and dropped temps to a min of 26/13 idle on an i5 460m max went to 55/46 w/turbo on and 49/41 w/turbo off using 6 instances of cpu burn in.

I think it creates a vacuum so works more efficiently

anyways, I think I had the sizing wrong - 0.7mm is too small and 1.5 is too big so 1mm next and see what happens.

 

Well...those thermal pads are pretty cheap...I mean, spend a couple bucks on ebay you can get a bunch of them with all sizes and all thinness...

Copper pads do a better job though, as long as you have applied the right amount of thermal grease. Most of the time, solid things have a higher thermal conductivity, but just lack on the smooth surface.

Personally, "Arctic Silver 5" is one of the best thermal grease available in the consumer market(typically ebay..convenient place XD ).

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hum...If these is only a copper pad between the heat sink and the GPU, you just don't want to break the motherboard by screwing the sink too tight...you can feel it actually, just wring the screw driver very gently until you can feel some thing blocking, then continue to wring about 1~2 quarter...then done... Swaying the motherboard a little bit and touching the copper pad using a little screw driver can confirm if the pad is installed properly.

And...copper pads and most of the high thermal-conductive grease are electricity conductive, but thermal pads do not. Consequently, the best performance should be placing a copper pad between the main GPU chip and the heat sink(with grease), then thermal pads around the main chip between the GPU and heat sink.

 

Hum..just wanna mention that having a box of alcohol pads available when doing these jobs is just extremely helpful.. A bottle of pure(99%) alcohol with tissue is fine, 70% alcohol pads for medical use are perfect too, just remember to dry the component before applying grease or tuning it on

 

alcohol pads are pretty good. I use a bottle of 99% alcohol and cue tips and it works ten times quicker than the AS5 remover which takes ages.

I've been using mass metal polish on it as well after the alcohol and then the AS5 purifier and it works great. The mass removes dirst even after the alcohol, removes everything pretty much.

 

ok, fixed it.

It was the fact there'sone screw on one side and it knocks it off centre so I just had to screw it down the right amount and I was sorted, 41 c Idling.

I'll let the AS5 settle in and give it some testing later