Yet another GPU upgrade question..........

Ah, so I cannot use the screws on the m15x heatsink?
Do you know if longer or shorter screws are needed?
As would happily measure with vernier calipers and dremel to size if shorter.

Sent from my Nexus 6P using Tapatalk

 

Brilliant. Again, thanks for the info!

Sent from my Nexus 6P using Tapatalk

 

The screws for the Clevo were a smaller diameter than the Dell 260M it replaced in my system.

Sent from my overpriced Galaxy S6 Edge +

 

Ah, gotcha.
So just to clarify, these are the 4 screws used on the heatsink to screw into the X bracket?

Sent from my Nexus 6P using Tapatalk

 

Correct. The heatsink mounting arms will bend quite far as you tighten them down. I have installed two of these in two M15x's and not had any issues. It will run nice and cool no matter how fast you try to run it.

Sent from my overpriced Galaxy S6 Edge +

 

Great stuff.
Do you happen know the correct thread size for the screws needed?
Are they available with the springs to lock off so 'overtightening' cannot occur?

Sent from my Nexus 6P using Tapatalk

 

I never did check the screw size and those other two machines don't live here.

I can probably check the ones on my 980M this weekend as it should be tg he same.

The screws are standard screws, not shoulder bolt types.

Sent from my overpriced Galaxy S6 Edge +

 

That would be extremely helpful. Thanks.

I was thinking they would be standard.
Hmm, so changing to a smaller diameter screw would mean that the current heatsink c clips wouldn't be in use, which could cause an error whilst tightening up potentially cracking the die?

It would be better if c clips could be used on the new screws to stop this from happening.

I'll have a read around and see if anyone has experienced this.

Sent from my Nexus 6P using Tapatalk

 

Seems like I've been over thinking this one.
A quick looksie on YouTube revealed this....


Seems he just did away with the original screws and as long as you don't go crazy with the tightness you'll be fine.

It looks like it just needs to be' nipped up' with even pressured at all 4 screw locations to get the heatsink seated properly.

Sent from my Nexus 6P using Tapatalk

 

Yes, just screw it down evenly and you will be fine. I crushed two AMD cards but never an Nvidia one (yet... )

Sent from my overpriced Galaxy S6 Edge +

 

I'll be bloody careful with a 970m! Heh.

Sent from my Nexus 6P using Tapatalk

 

Correct me if I'm wrong, but won't the 5850M x-bracket work on the 970m? It appears to be the same dimensions from pics I've seen.

 

It could be. There wasn't much difference between the AMD M6000 and the nvidia X brackets.

Sent from my overpriced Galaxy S6 Edge +

 

Stock Dell's Moblity 5850 x-bracket will fit to all nVidia MXM cards. Actually I'm using x-bracket from Mobility 5870 on K4000M now.
X-bracket from 6970M/6990M/7970M etc won't fit normally.

 

After a quick look around I came across this: http://www.ebay.co.uk/itm/152062646640
Surely the correct size will be included in this kit.
Quite a range of sizes and for the money would be quite a handy little set to have as spares.

Sent from my Nexus 6P using Tapatalk

 

If I could use my 5850m bracket that would save a whole load of messing about.
But of a bugger to get off I've read, but that would be the only mod instead of hunting down the correct screws.

Sent from my Nexus 6P using Tapatalk

 

It's really not that hard. Use a hair dryer to warm it up a bit and use a screwdriver to (carefully) push on the posts. You should have it free within a few minutes.

That screw assortment will come in handy. I have replaced many lost screws on various laptops I have with an eBay screw kit.

Sent from my overpriced Galaxy S6 Edge +

 

Reeto then. Seems easy enough.
Wasn't aware that the X bracket would be usable with newer nvidia cards.

Sent from my Nexus 6P using Tapatalk

 

Do like Deadsmiley said and use a hair dryer to warm up the double-sided tape holding the bracket to the pcb, then push down the screw posts from the top side. It will eventually separate to the point where you can use your fingers to start prying the bracket off. You might end up bending it a bit, but you can bend it back to shape.

Just be careful not to rip up the black insulating material (mylar, I think). Don't worry about the double sided tape too much, even if it comes off completely, just be careful with the black insulating material. If you do damage it, you can always replace it with some standard electrical tape.

Also, you may want to get yourself some spare thermal pads. I am not sure what size fits properly on the 970M. The stock green ones are .75mm thick which is a rare size and only cover the VRAMs for the stock cards that came with the M15X. If they are intact and fit the 970M, you should be fine re-using them.

Most aftermarket cards I've tried work fine with 1mm thermal pads for the VRAMs and VRM chokes (the square grey blocks). Ideally, you also want to put pads on the Mosfets but that will require thicker pads (probably around 5mm). You can also usually stack your pads to achieve a desired height. Some people, including myself, don't bother with the Mosfets though.

If you do get new thermal pads, get good ones and try to stay away from the generic stuff from China. I've had good results with Arctic Cooling pads and Phobya pads. They stick well and compress well, unlike the generic ones I've used. I also recommend K5-Pro thermal pad replacement paste (a very viscous paste that is designed to replace standard thermal pads).

Oh and of course get yourself some good thermal paste for the GPU core. I highly recommend Gelid GC Extreme.

Here is where thermal pads are designed to go:

 

Cheers kosti,
Funnily enough I have just been reading about thermal pads. Very informative post, ta very much.
Have purchased some 0.5mm Arctic pads will get some 1mm aswell I think.
With all the info on here should a breeze to get it running! ️

Sent from my Nexus 6P using Tapatalk