Studio 1557 copper shim dimensions/thickness

[iafzal3]

Originally Posted by scaper28

Just search on ebay thats where I found them . also the link I posted on the previous page although it has ended it says on there to email him direct if you require anything


so I would just email him and say you would like to buy one of the kits and that will no doubt prompt him to re do the ebay add or something :-)

Thanks mate!

I am hoping if there is a supplier in US for this it will be much faster to get it but if not I may give it a try.

[iafzal3]

techifan1,
I found a seller who can do 0.75 and 1mm thicknes.
Will this work or too thick?

[techifan1]

Originally Posted by iafzal3

techifan1,
I found a seller who can do 0.75 and 1mm thicknes.
Will this work or too thick?

The recommended thickness for the GPU copper shim is 0.9mm and 0.7mm for the video ram cooling copper shim. See post 22 and 28 for explanation.
However, you may get away with using a 1mm copper shim for the GPU but you risk damaging the GPU by applying to much down pressure onto the surface of the GPU die when the heatsink is fully screwed down. The springs are important in providing a controlled downward pressure onto the GPU die, therefore if you do decide to use a 1mm shim for the GPU make sure that the springs do not fully compress when you screw down the heat sink.

[iafzal3]

Originally Posted by techifan1

The recommended thickness for the GPU copper shim is 0.9mm and 0.7mm for the video ram cooling copper shim. See post 22 and 28 for explanation.
However, you may get away with using a 1mm copper shim for the GPU but you risk damaging the GPU by applying to much down pressure onto the surface of the GPU die when the heatsink is fully screwed down. The springs are important in providing a controlled downward pressure onto the GPU die, therefore if you do decide to use a 1mm shim for the GPU make sure that the springs do not fully compress when you screw down the heat sink.

OK thanks, I my wait as it seems 0.1mm may be too tight for GPU.

Since the ebay guy has 0.75 mm should I get that insteaad for GPU, is it a better then using 1mm?
I guess if I use 0.75mm thick for GPU then I should use maybe 0.5m for video ram as the gap will not be as much?

So which is the better choice?
0.75mm for GPU
0.5mm for Video RAM

or

1mm for GPU
0.75mm for Video RAM

[techifan1]

Originally Posted by iafzal3

OK thanks, I my wait as it seems 0.1mm may be too tight for GPU.

Since the ebay guy has 0.75 mm should I get that insteaad for GPU, is it a better then using 1mm?
I guess if I use 0.75mm thick for GPU then I should use maybe 0.5m for video ram as the gap will not be as much?

So which is the better choice?
0.75mm for GPU
0.5mm for Video RAM

or

1mm for GPU
0.75mm for Video RAM

The 1mm for GPU and 0.75mm for video ram would be the better option.
If you use a 0.75mm shim for the GPU it may be to thin for the mod to work efficiently.
BTW, did you email the seller on ebay as scaper28 suggested in his post 80 and if so is he saying that he is no longer able to supply the correct size shims.
If this is the case I will contact him to find out why as the kits have proved to be very popular.

[iafzal3]

Originally Posted by techifan1

The 1mm for GPU and 0.75mm for video ram would be the better option.
If you use a 0.75mm shim for the GPU it may be to thin for the mod to work efficiently.
BTW, did you email the seller on ebay as scaper28 suggested in his post 80 and if so is he saying that he is no longer able to supply the correct size shims.
If this is the case I will contact him to find out why as the kits have proved to be very popular.

Thx, just did the search and find it. A little steep price with shipping close to $30.
Copper Shim 1 10mm x 10mm x 0.9mm ,2 25mm x 10mm x 0.7 | eBay
I guess I will go with it.
Btw, did you use the shinny end of the shim towards the GPU or the slightly rougher side? Did you also apply some ICD between the shim and the heat sink as well?
How long does it take 3-4 hours total.

[kizwan]

You'll need to put thermal compound between the copper shims & the heatsink. It will provide thermal conductivity between the cooper shims & the heatsink & also act as a glue to keep the copper shims in place. If you're using IC Diamond 7, the curing time is approximately 2 hours. You can use Arctic MX-4 instead. MX-4 is good too.

I DIY the shims using the fins from a desktop CPU heatsink (aluminum). It's not good as copper but I'm satisfied with the result. I'm using Arctic MX-4 thermal compound.

[techifan1]

Originally Posted by iafzal3

Thx, just did the search and find it. A little steep price with shipping close to $30.
Copper Shim 1 10mm x 10mm x 0.9mm ,2 25mm x 10mm x 0.7 | eBay
I guess I will go with it.
Btw, did you use the shinny end of the shim towards the GPU or the slightly rougher side? Did you also apply some ICD between the shim and the heat sink as well?
How long does it take 3-4 hours total.

A little confusing but it looks like he is possibly supplying 1 10mm X 10mm x 0.9mm and 2 of the 25mm x 10mm x 0.7mm shims. You only require 1 of these shims. Worth checking before you place your order as it could reduce the cost.

Ideally both sides of the shim should be as shinny as possible, although realistically very slight surface scratches should be OK. It’s the job of the thermal compound to fill in these slight scratches to improve the thermal conductivity between the mating surfaces.

Apply the thermal compound between the GPU and one side of 10mm x 10mm shim then apply thermal compound to the other side of shim that mates with the heat sink.

Take your time and try not to rush the mod.

[kizwan]

Originally Posted by techifan1

A little confusing but it looks like he is possibly supplying 1 10mm X 10mm x 0.9mm and 2 of the 25mm x 10mm x 0.7mm shims. You only require 1 of these shims. Worth checking before you place your order as it could reduce the cost.

Several people (here & here) use 0.7mm on the GPU (and CPU) while 0.9mm on the video RAM. I did read your post but since I need to make the shims thinner myself, what I did is make both shims 0.8mm & 0.9mm thin using sand paper & try it whether they'll fit or not. I did re-uses the thermal pad for the video ram in addition to the shim, just like you did. I did it two times. The first attempt, there is a large gap between the CPU & the heatsink. Large enough for the CPU temp to easily reached 90C during heavy load (ermm...rendering a video). I didn't tighten the screw because I'm using 1mm shim & afraid to break the GPU. For the second time, I make the shims thinner, probably between 0.8mm to 0.9mm & the heatsink is properly fitted. I'm able to tighten the screw this time.

Questions for you, for the video ram, it is necessary to use thermal pad between the video ram & the heatsink right? Thermal paste is bad idea?

@iafzal3, I agree with techifan1. Take your time when doing the mod. I take my time when disassembling the laptop, applying the shims & make sure they fitted properly. Be careful when removing the thermal pads. They tend to disintegrate itself if not carefully. When disassembling your laptop, follow the service manual carefully. Do not removed all the screws underneath the laptop at the same time (follow the steps in the service manual). I noticed the most fragile part while disassembling this laptop is the display hinge.

[techifan1]

Originally Posted by kizwan

Several people (here & here) use 0.7mm on the GPU (and CPU) while 0.9mm on the video RAM. I did read your post but since I need to make the shims thinner myself, what I did is make both shims 0.8mm & 0.9mm thin using sand paper & try it whether they'll fit or not. I did re-uses the thermal pad for the video ram in addition to the shim, just like you did. I did it two times. The first attempt, there is a large gap between the CPU & the heatsink. Large enough for the CPU temp to easily reached 90C during heavy load (ermm...rendering a video). I didn't tighten the screw because I'm using 1mm shim & afraid to break the GPU. For the second time, I make the shims thinner, probably between 0.8mm to 0.9mm & the heatsink is properly fitted. I'm able to tighten the screw this time.

Questions for you, for the video ram, it is necessary to use thermal pad between the video ram & the heatsink right? Thermal paste is bad idea?

@iafzal3, I agree with techifan1. Take your time when doing the mod. I take my time when disassembling the laptop, applying the shims & make sure they fitted properly. Be careful when removing the thermal pads. They tend to disintegrate itself if not carefully. When disassembling your laptop, follow the service manual carefully. Do not removed all the screws underneath the laptop at the same time (follow the steps in the service manual). I noticed the most fragile part while disassembling this laptop is the display hinge.

I am surprised that some have apparently shimmed the CPU.
In my opinion it is not advisable to shim the CPU and should not be necessary if the mod is carried out correctly.

Personally I would recommend using the thermal pad between the shimmed heat sink and video ram because the gap is to large for the thermal compound to fill. Generally, thermal compound works more efficiently if applied thinly and under pressure.