Khenglish Posted May 31, 2016 Share Posted May 31, 2016 As the title says, I'm looking for a dead GK104. It doesn't need to be dead, but it won't look too pretty when I'm done with it, and I don't want to pay what a live card warrants. The reason is I think I found the laser cuts that disable cores on my dead 680m, but need a non-680m to compare with to verify this. If this is confirmed then I know what to look for on maxwell cards, possibly unlocking 980m and 970m cards. I spent a lot of time trying to see if Nvidia no longer did laser cuts, and came to the conclusion that they still do, so now I want to see if I can find them. Acceptable cards: k3000m, k3100m, k4000m, k4100m, k5100m, 675mx, 780m, 880m, 680, k5000, or anything with a GK104 that has a a different CUDA core count than the 680m. What I suspect are laser cuts are the 5 small squares in a group on the left side middle of the packaging. Without the insulating coating removed they are invisible, while all other markings are visible through the coating. I believe these laser cuts break a ground connection that would otherwise pull signals to low voltage in an underlying layer. I want to see another card first though before looking for them on my 980m. Also I did quite a bit of damage to this gpu by sanding off the protective coating (look at the edges). A chemical means would likely be preferable. 1 Quote Link to comment Share on other sites More sharing options...
Khenglish Posted June 3, 2016 Author Share Posted June 3, 2016 Also is someone doesn't want to send their card, but sand at the location of the 5 little squares, that'd be great too. Quote Link to comment Share on other sites More sharing options...
aduy Posted July 18, 2016 Share Posted July 18, 2016 interesting, so are you saying that with a bit of work, you can enable all the cores that are potentially there? you may want to contact one of the resellers directly, im sure they have a bin somewhere. Quote Link to comment Share on other sites More sharing options...
Khenglish Posted July 18, 2016 Author Share Posted July 18, 2016 It turns out Kepler cards were the last cards to have laser cuts. With maxwell Nvidia flashes data onto the core. Quote Link to comment Share on other sites More sharing options...
sirana Posted July 18, 2016 Share Posted July 18, 2016 @Khenglish you don't happen to need another 680m right? Cause mine died and even reflowing prolonged it's life by only a week. Now if the card is installed in my Clevo x7200 the notebook won't power on (when I push the start button every led blinks for half a second then turns off again). Quote Link to comment Share on other sites More sharing options...
Robigarga 88 Posted September 16, 2016 Share Posted September 16, 2016 Hi! Someone has to sell me a clevo x7200 gpu heatsink? Thank you and sorry for the intrusion... Quote Link to comment Share on other sites More sharing options...
gat Posted June 5, 2018 Share Posted June 5, 2018 desloer pour toi Quote Link to comment Share on other sites More sharing options...
0ldman Posted March 17, 2019 Share Posted March 17, 2019 I've got a dead 460M. Would any info from that be worth referencing? Quote Link to comment Share on other sites More sharing options...
lima-PT Posted June 28, 2022 Share Posted June 28, 2022 i have an gtx 980m 8gb for parts , according too the lastest teste ,i made before aquire my gtx 1070m , the pcb is dead de bga chip is good . have too menction .that , gpu had suffer 2 attempts too repair pcb , but no sucess Send me DM ,if interested . Quote Link to comment Share on other sites More sharing options...
Binarious Posted December 4, 2022 Share Posted December 4, 2022 I have a dead 1060m with a good core if that would help. Quote Link to comment Share on other sites More sharing options...
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