thegh0sts

heatsink installed will test.

Looks like the heatsinks from Amazon arrived before the heatsinks from moddiy.com and Amazon shipped later. Will probably do a test install with all the parts now. Sent from my SM-N910G using Tapatalk

I should be getting my mini-heatsinks from amazon tomorrow.

I bought this, the high temp of 690 Celsius for black is quite good and it the paint is not obvious where i sprayed...it's quite seemless. https://www.bunnings.com.au/dulux-duramax-300g-high-heat-enamel-black-spray-paint_p1400735

I bought some high temperature resistant paint and sprayed it over the exposed piece and it looks great! I might do another coat to be sure Just waiting on the mini-heatsinks to arrive and i should be good to go.

placing a piece of copper over the power phase chip provides only a very thin gap, enough for either tape or thermal paste. i might attach some mini heatsinks to the top to help the dissipation if there's enough height clearance. i have glued that cross piece into place so will see if that does any better. EDIT: since the cross piece i glued on is quite bare I was looking at getting some high temp resistant spray paint to cover that area in place of anodizing the copper

final idea for the modded heatsink.

looks like the mini-heatsinks shipped so i'll be getting them soon. better not buy more due to impatience

Here's how the shaved section in the heatsink plate interacts with the power phases. As you can see there's just enough of a gap to allow even the thickness of the thermal pads (which i am gonna have to trim a bit). Plus i get some decent coverage with the thermal paste so i think it's all good. deciding if i should use thermal paste on the red area or just thermal transfer tape. EDIT: looking at the top of the initial fitting i think it's possible to attach a small copper plate over the area of the power phase chip to the heatsink with thermal adhesive. all you'd need there is just a thermal pad that was thick enough. If I could graph the copper from an unused section of the plate to cover the area in red that would be great. I may not do this right away but after i get my mini-heatsinks. But so far it's looking good!

I did manage to find some 80grit emery sandpaper (suited for soft metals like copper), 400, 800, 1200 grit wet & dry sandpaper (even though i have some being delivered...i guess i can start my own tool kit haha) and i took about 4-5 hours just to sand all the rough areas from my cuts and I did an initial fitting and it looks like I shaved off enough the bend in the plate for the row of power phases to not bump into the bend in the heatsink plate. Remember that the power phases have thermal pads sandwiched between the plate and the phases so that gap kinda helps. As you can tell, I made some extra cuts at the top where the small black chips (that are paired) are because one pair was partially covered so i thought i may as well cut a small bit out so it can have a mini heatsink on it instead. this is a non-essential cut, the essential cuts are where the power phase chip sits on it's own and sanding that bend in the plate so the row of power phases don't bump into the plate. So in my instance there will be 7 chips that require 4 mini heatsinks. @coolane's version didn't have this so they only have 3 mini heatsinks. Here's my initial test fitting of the modded heatsink. I didn't see any noticeable gaps in the area between the die and heatsink. Here's what my shaved heatsink looks like. I shaved it to the point where it nearly splits the copper so i this should be a good indication of how much you need to shave off and I get a perfect fit. Now, it's just a matter of getting the 8.8x8.8x5mm heatsinks + thermal tape. EDIT: It won't be till early February when I get those heatsinks and I have no idea where i can source them locally in Australia.

I just learnt that the vbios mod used was from a person that stole @Prema's code so in respect to Prema i won't be using it. got a hacksaw and made my cuts EDIT: I don't think 400 grit sandpaper will do the job...it's like I haven't shaved much off at all.

Oh ok so you still used the programmer to flash the vbios. Will look into it. Can't find that clip attachment. EDIT: I'll just worry about the heatsink for now. Sent from my SM-N910G using Tapatalk

@coolane whatever vbios you're using it should work for me since gsync is known not to work with the P870DM-G.

thanks. did you flash it through nvflash and which did you flash (i see 2 1070 roms)? i'm not gonna flash it now anyway since i don't think that 1 set of heatsink fins is enough to cool it. EDIT: my parts still haven't shipped yet

Ah i see. I assume you unlocked the TDP adjustable setting and voltage control? I did find similar values in my vbios rom file but since i don't have a flash programmer i can't do it.

thanks. how did you calculate the hex value to get 200W TDP?

I did have a look at the thread talking about reprogramming the vbios chip to do 200W TDP and it looks straight forward when it comes to unlocking the TDP but setting the max and min TDP is bit of a bump since i can't calculate how one gets/calculates the hex value for a 200W TDP.

i was thinking of using a dremel (even bought the cutting wheels for metal) but think it might be better if i just do the same and get a hand saw from the hardware store. do you know how to separate the pipe from the plate? only cos there's too much plate on the right side (the side that doesn't have the power phase chip). i was thinking if it could be separated that it be bent so that its inline with the GPU die screw holes and reattached through soldering or thermal adhesive, then cut off the excess plate to make it smaller. did you have to sand the existing pipes to give new pipes better contact?

sure, i've made a thread for future reference and further discussion

As per @coolane's request, I figured I'd make a separate thread for this modification. In the original thread (https://www.techinferno.com/index.php?/forums/topic/265-benchmarks-the-official-thread/&page=34) coolane shows their heatsink modifications and results which I think were ingenious. Initially I didn't think it was possible to use the 980DT heatsink with the MSI 1070 without modification, though with coolane's post showed potential and I figured I may as well give it a try since there's no chance in hell or any other place that I would be able to do a 1070 SLI configuration. Thanks to coolane, they provided further detail into their mod and it was very straightforward enough for me to warrant an attempt. So, I ordered: 10pcs of 8.8mm x 8.8mm heatsinks 1 sheet of thermal transfer tape 400 - 3000 grit sandpaper and I am waiting for those parts to arrive to my location before I begin and I post when they do. EDIT: I may do some minor changes to their attempt like not adding additional heatsink pipes since i have no idea on how to even attach them so this will be a basic modification. EDIT2: Original content EDIT 3: I learned from @J95 and @Prema that the vbios mod used by coolane was stolen from Prema by some crappy Chinese hacker so this thread is specifically for the modding of the heatsink itself. EDIT 4: I ended up getting the following to complete the mod so far. 1. Stanley hacksaw - $10AUD 2. Sandpaper 80 grit and 180 grit emery (for soft metals like copper), 400 grit W&D, 800 grit W&D, and 1200 grit W&D - $10AUD approx (though i spent more ordering more from Amazon which won't be used now but good to have :p) 3. Protective gloves - $12AUD EDIT 5: Ordered some thermal adhesive to glue a bit of copper plate to cover the power phase chip. Sure, a mini-heatsink might do the job though it might be better if it was going through the heatpipes.

@coolane one last question, the mini heatsinks, what size are they? most of the chips / mosfets look like they're at least 1cm x 1cm (i checked my 980DT as a reference) - is that correct? i don't want to get bigger heatsinks and cut them down as that might screw with the sink's ability to transfer the heat away. EDIT: I found some heatsinks that look similar on moddiy.com so i bought a few and some transfer tape. all i need to get now is dremel to "trim" the heatsink and the sand paper then i shall be set to go with this mod. i've started my commitment to this LOL

Thanks@coolane this info is brilliant. I'll give this a try. Sent from my SM-N910G using Tapatalk

Thanks for you insight! i'll do some investigation when i can. 1. did you cut and sand with a dremel or something? 2. what do you mean by "sand this deeply inward? possible to get better pics of that section? 3. How do you apply the smaller heatsink fins? i can see the difference between your heatsink and my unmodded one and I am wondering that this might help with temps even at stock TDP. i also noticed that the area in red touches the heatsink...not sure of that's ok.

downloading now. here's my score http://www.3dmark.com/3dm/17458874? better than 376.60 but still a bit under the 376.48 score.

i only managed a measly 15315 with a +120 overclock on the core on the 1070 notebook. http://www.3dmark.com/fs/11273854 not a cool as @coolane's score but still respectable i think. EDIT: is it possible to dump the vbios and flash it to another 1070?? oh coolane you have me all worked up!