G51BB GPU replace thermal pad of fill gap with AS5?

Hello,

Its summer where I’m traveling and the weather is quite extreme. I need to improve the heat on G51 GPU. I see that there is a gap on the thermal pad. Should I remove the thermal pad completely and replace it with AS5 or fill the gap with AS5?

I’m asking this because I’m not absolutely sure if I the GPU will make contact with the heat sink if I completely replace the thermal pad.

Does anyone have experience with this?

Thanks

 

What thermal pad? Are you talking about the dozen or so pads on the GPU memory? If so, leave those be.

 

the one in the center )

I left the pad and filled the gaps... temperature was 97 max playing prince of persia two thrones and the max is 84 now...

 

Do you know if I can get better results by removing the pad and just using thermal paste? Or, is this as good as it gets without doing mods like your copper mod.

thanks!

 

blah, crysis still gives me 96c max

 

Wait, your GPU came with a thermal pad? I wonder who bungled that up.

Definitely remove the pad and put a thermal paste on it. Make sure not to mess with the other thermal pads though.

 

I took some pictures...
I'm getting ready to travel. I will post the pictures later.

 

On a couple other threads here (Gateway 7811-FX for one) it's been said that IC7 does a much better job filling a large gap than the more compliant AS5 which tends to "run away" when applied heavily. I have no personal knowledge on this, but you may want to check it out.

 

AS5 sucks in thick layers. Newer pastes handle it better. MX-3 does well in a thick layer, out of personal experience.

 

I've been told to avoid thick layers of paste. Copper/other metal plates as heatsinks with pastes applied to them do a much better job.

 

Ideally, yes. In a pinch, though, a thick(er) layer of TIM won't break anything.

 

Ok I have a similar question, I replaced my P7350 with a T9550, then a T9900. The thermal pads on the gpu ram was falling off, and I thought I should just remove them and replace them with OCZ Freeze paste. Today I was playing some L4D, and HWmonitor reported a max temp of 100C! And while I'm playing it is sitting around 86C after the fan kicks up to full speed.

Question: Where can I find replacement pads? I've searched all over google, and can't find them or anything about the size in mm of pad I need.

Question 2: I read online that I can replace the pads with copper shims, anyone know where and what size in mm of copper shims I need?

I am a little freaked out to play games right now, but since the GPU is idling at 50-55C I am going to continue to use it for other work.

Any help would be greatly appreciated guys. Thanks!

 

You made the stupidest mistake you can make with your GPU. Thermal paste is not meant to be the sole thermal bridge between components and their heatsinks; it is meant to fill in microgaps and extremely subtle unevenness due to manufacturing quality control.

You will need 1mm pads. These will do. Just cut them with a razor to the size of your memory chips. http://www.frozencpu.com/products/9...heet_-_160mm_x_155mm_x_1mm.html?tl=g8c127s255

You can replace the thermal pads with copper shims, but it will be extremely difficult to gauge the thickness of the space between the memory chip and the existing heatsink. If the shims are too thick, it will raise the heatsink too high that the GPU core will not make contact. If the shims are too thin, the memory chips will not make contact. The precise thickness will not be 1mm exactly. Copper shims also put a lot of physical stress on the memory chips because of the retention pressure from the heatsink mounts. Combined with heat from playing games, this will bend the solder points on your memory chips faster.

I do not think you have the necessary tools to measure and procure the proper gauge shim. I suggest you just get new thermal pads. Avoid using your notebook until you get the pads replaced.

 

Thank You!! Ordered, and will not play games until I get these guys on the GPU, hopefully early next week. Bad Company 2 Beta next week, so I need them soon!

Again, Thanks

 

Ideally, you shouldn't be using your notebook period until you get those thermal pads.